CN207516172U - The device of casing rigidity during a kind of enhancing heat exchanger tube head pressure test - Google Patents
The device of casing rigidity during a kind of enhancing heat exchanger tube head pressure test Download PDFInfo
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- CN207516172U CN207516172U CN201721550724.9U CN201721550724U CN207516172U CN 207516172 U CN207516172 U CN 207516172U CN 201721550724 U CN201721550724 U CN 201721550724U CN 207516172 U CN207516172 U CN 207516172U
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- heat exchanger
- connecting pipe
- tube head
- pressure test
- exchanger shell
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Abstract
The utility model belongs to petrochemical industry technical field of heat exchange device, and in particular to a kind of device for enhancing heat exchanger tube head pressure test intensity.The device of casing rigidity during a kind of enhancing heat exchanger tube head pressure test, it is used in fixed tube sheet heat exchanger pressure testing process, it is set in heat exchanger shell, several increase intensity flexible cables are wound in the heat exchanger shell, the connecting portion of heat exchanger shell and connecting pipe winding blind area design has blind area reinforcing ring, and pipe connecting flange component is set on connecting pipe flange.It is yielding that the utility model is utilized flexible cable softness, and the characteristics of bearing tensile stress is effectively increased casing rigidity, and the equipment cost is cheap, applied widely, highly practical.
Description
Technical field
The utility model belongs to technical field of heat exchange device, and in particular to a kind of enhancing heat exchanger tube head pressure test
When casing rigidity device.
Background technology
Fixed tube sheet type heat exchanger has relatively simple for structure, compact, the characteristics of machined piece is less, low cost,
It has a wide range of applications in petroleum refining and Chemical Manufacture.In tube side pressure (Pt) higher than under shell side pressure (Ps) working condition,
And the two difference it is larger when, since thickness of shell is relatively thin, can not improve shell side pneumatic test pressure to tube head carry out pressure testing.Now
Manufacture and design unit to be generally detected tube head using the method for doing for supplement ammonia leak detection, but not only danger is big, cost for this method
It is higher, and can only accomplish to be detected the compactness of tube head, and can not detect whether the compressive resistance of tube head can meet makes
With requiring, cause tube head and there is greatly leakage hidden danger.How in the fixed tube sheet type heat exchangers of Pt ＞ Ps operating modes pipe is carried out
Enhancing its casing rigidity to heat exchanger during head compressive resistance experiment is never resolved in pressure vessel manufacturing industry
Technical problem.The method that ammonia leak detection is detected tube head of doing for supplement is generally used at present, the problem is that：Ammonia and
Air easily forms the danger that explosive mixture sets off an explosion, and ammonia leakage can cause environmental pollution, and personnel is caused to be poisoned, separately
Outer ammonia leak hunting method can only be accomplished to be detected the compactness of tube head, and can not detect whether the compressive resistance of tube head can expire
Sufficient requirement.
Utility model content
The purpose of this utility model is to provide a kind of fixation in Pt ＞ Ps operating modes for problems of the prior art
Tube-plate type heat-exchanger strengthen during the experiment of tube head compressive resistance the device of fixed tube sheet heat exchanger shell intensity.
Technical solution provided by the utility model is：
The device of casing rigidity, is used in fixed tube sheet heat exchanger tube during a kind of enhancing heat exchanger tube head pressure test
Head pressure test process, is set in heat exchanger shell,
It is fixedly connected with connecting pipe on the side wall of heat exchanger shell, heat exchanger shell and connecting pipe are taken over
The blind area reinforcing ring provided circumferentially about in portion, the back side of the connecting pipe upper flange are fixedly installed rigidity of flange enhancing ring, even
Blind plate is fixed on the flange of jointed tubular workpieces, pressure gauge component is fixedly installed on blind plate, is mended in the heat exchanger shell, blind area
Wind several increase intensity flexible cables on Qiang Huan, connecting pipe, winding direction is circumferential spiral winding, and end connects between flexible cable
It is connected at head using wire tensioner.
Specifically, the blind area reinforcing ring is formed for the cylinder of two semi-cylindrical shaped structures, described two cylinders are wherein
The rounded slot of connecting portion of one end is set and the connecting portion is placed on connecting pipe root, the internal diameter and heat exchanger of blind area reinforcing ring
Housing outer diameter is identical, and the axis of blind area reinforcing ring is overlapped with shell heat exchanger body axis.
Specifically, rigidity of flange enhancing ring be made of two semiorbicular arc panels, rigidity of flange enhancing ring internal diameter with
Connecting pipe it is identical.
Specifically, when flexible cable is winding of single layer, handed over from the heat exchanger tube sheet of heat exchanger shell end and heat during winding
Start to wind as beginning at exchanger shell solder design；When flexible cable is multi-lay winding, from both ends tube sheet and housing attachment weld
Staggeredly as winding starting point.
Specifically, the winding of connecting pipe is since at connecting pipe and heat exchanger shell solder design.
Specifically, a diameter of 4-6mm of the flexible cable.
The main resolving ideas of the utility model is by winding flexible cable in hull outside, to increase casing rigidity, making it
It can meet and improve heat exchanger shell side test pressure according to tube side test pressure, heat exchanger shell side be suppressed, to reach to pipe
Head weld seam carries out the purpose of compressive resistance experiment.The utility model is utilized that flexible cable softness is yielding, can bear the spy of tensile stress
Point is effectively increased casing rigidity, and the equipment cost is cheap, applied widely, highly practical, and equipment making material is greatly saved,
The production cost of equipment is reduced, meets the developing goal of the energy-saving and emission-reduction of country's promotion, solves in Pt ＞ Ps working conditions
Fixed tube sheet type heat exchanger can not by improve shell side test pressure carry out the technical problem of tube head pressure test, eliminate
Tube head leaks hidden danger, and the safety and steady operation for petrochemical plant provides guarantee, meets and is improving shell side test pressure
Under the conditions of to tube head carry out pressure test when intensity need.The water that the utility model could be used without toxicity carries out hydraulic test,
So as to avoid some dangerous generations；Pressure test method provided by the utility model eliminates tube head because that cannot bear tube side
Hidden danger is leaked caused by pressure, the safety and steady operation for petrochemical plant provides guarantee.
Method provided by the utility model is not under the premise of changing housing design thickness, increasing spillage of material, using can
Flexible cable of dismounting etc. increases casing rigidity as interim pressure parts, and the interim pressure parts such as flexible cable is torn open after the completion of pressure test
It may be reused after removing.
Description of the drawings
Fig. 1 is the structure diagram of device described in the utility model；
Fig. 2 is the A-A sectional views in Fig. 1；
Fig. 3 is wound around the canoe schematic diagram of individual layer flexible cable；
Fig. 4 is wound around the canoe schematic diagram of two layers of flexible cable；
Fig. 5 is blind area reinforcing ring structure diagram；
Fig. 6 is the structure diagram of rigidity of flange enhancing ring；
Fig. 7 is the structure diagram of wire tensioner.
1 heat exchanger tube sheet, 2 blind area reinforcing ring, 3 heat exchanger shell, 4 flexible cable
5 connecting pipe, 6 pressure gauge component, 7 rigidity of flange enhances 8 wire tensioner of ring
9 gasket seal, 10 bolt fastener.
Specific embodiment
As shown in Figure 1, it is a kind of enhance heat exchanger tube head pressure test when casing rigidity device, be used in fixed tube sheet
Heat exchanger tube head pressure test process, is set in heat exchanger shell 3,
Connecting pipe 5 is fixedly connected on the side wall of heat exchanger shell 3, heat exchanger shell 3 connects with connecting pipe 5
The blind area reinforcing ring 2 provided circumferentially about of pipe portion, the back side of 5 upper flange of connecting pipe are fixedly installed rigidity of flange enhancing ring
7, it is fixed with blind plate on the flange of connecting pipe 5, fixed setting pressure gauge component 6 on blind plate, in the heat exchanger shell
3rd, blind area reinforcing ring 2, wind several increase intensity flexible cables 4 in connecting pipe 5, winding direction is circumferential spiral winding, flexible cable 4
Between the joint of end connected using wire tensioner 8.
The blind area reinforcing ring 2 is formed for the cylinder of two semi-cylindrical shaped structures, described two cylinders wherein one end
The rounded slot of connecting portion is set and the connecting portion is placed on 5 root of connecting pipe, the internal diameter and heat exchanger shell of blind area reinforcing ring 2
3 outer diameters are identical, and the axis of blind area reinforcing ring 2 is overlapped with 3 axis of heat exchanger shell.
Rigidity of flange enhancing ring 7 is made of two semiorbicular arc panels, and rigidity of flange enhances the internal diameter and connecting tube of ring 7
Part 5 it is identical.
When flexible cable is winding of single layer, from the heat exchanger tube sheet 1 and shell heat exchanger of 3 end of heat exchanger shell during winding
Start to wind as beginning at 3 solder design of body；When flexible cable is multi-lay winding, staggeredly make from both ends tube sheet and housing attachment weld
To wind starting point.
The winding of connecting pipe 5 is since at connecting pipe 5 and 3 solder design of heat exchanger shell.
A diameter of 4-6mm of the flexible cable 8.Fitting area and flexible cable to increase flexible cable and heat exchanger shell as possible twine
Around the fitting area of interlayer, and reduce winding labor intensity as possible, select flexible cable diameter appropriate, 4-6mm best results.
A kind of device using casing rigidity during enhancing heat exchanger tube head pressure test as described above carries out pressure-resistant examination
The method tested, including including before pressure test to casing rigidity verification and construction equipment preparation process, construction equipment：Flexible cable twines
Winding apparatus, ratchet tightener and spanner etc. determine the specification of the flexible cable 4 of winding by tube head Stren gsth test before pressure test
And the coiling length of the number of turns, the number of plies and required flexible cable 4 wound, and determine the width and rigidity of flange of winding blind area reinforcing ring 2
Enhance the thickness of ring 7, further include following steps：
The making of S1, blind area reinforcing ring 2, rigidity of flange enhancing ring 7, according to the width and method of determining blind area reinforcing ring 2
The thickness of blue rigidity enhancing ring 7 makes, and blind area reinforcing ring 2 is fitted closely with heat exchanger shell 3 after completing and is assembled；
Flexible cable 4 is carried out on S2, heat exchanger shell 3 to wind, and ratchet tightener is used in 4 winding process of flexible cable by flexible cable 4
Tightening, 4 joint of flexible cable is connected by wire tensioner 8；Connecting pipe 5 carries out flexible cable 4 and winds, and ratchet is used in winding process
Tightener tightens flexible cable 4, and 4 joint of flexible cable is connected by wire tensioner 8, and when winding is twined with certain pre-tensile stress
When around, flexible cable being winding of single layer, when winding, welds from the heat exchanger tube sheet 1 of 3 end of heat exchanger shell with heat exchanger shell 3
Seam junction starts to wind as beginning；When flexible cable is multi-lay winding, from both ends heat exchanger tube sheet 1 and heat exchanger shell 3
Attachment weld is staggeredly as winding starting point, and the winding of connecting pipe 5 is at connecting pipe 5 and 3 solder design of heat exchanger shell
Start；
All after the completion of winding, 5 assembly flange rigidity of connecting pipe enhancing ring 7, rigidity of flange enhancing ring 7 exists for S3, flexible cable 4
The back side of 5 upper flange of connecting pipe, is fixed with blind plate on the flange of connecting pipe 5, fixed setting pressure gauge component 6 on blind plate,
Gasket seal 9 is provided between the flange and blind plate of connecting pipe 5, it is tight by bolt between the flange and blind plate of connecting pipe 5
Firmware 10 connects, and bolt fastener 10 is tightened using spanner；
S4, shell side water filling after heat exchanger shell 3 increases the device installation completely of intensity outside, inject water, the temperature of water
Not less than 5 DEG C；
S5, equipment boosting, voltage stabilizing, test pressure should slowly rise, and pressure is kept 30 minutes after reaching specified testing pressure,
Leakage inspection is carried out to all weld seams and connecting portion, if any leakage, experiment is re-started after repairing；
S6, pressure of releasing, on inspection no liquid leakage, sound without exception in heat exchanger shell 3, nothing during step 5
Under visible deformation, pressure of releasing；
S7, it repeats to suppress, repeats the operation of step 5；
S8, pressure of thoroughly releasing carry out the inspection work of step 6, and situation is normally lower to carry out pressure of thoroughly releasing；
S9, flexible cable 4 are removed.
It carries out loosening area inspection after the completion of every layer of winding of flexible cable 4, the loosening area of every flexible cable 4 should be no more than the flexible cable
The 5% of 4 winding areas.
Following steps are further included, it is first that the sundries of the influence winding fitting effect on 3 surface of heat exchanger shell is clear before winding
Reason is clean.
Steps described below is further included, flexible cable dismounting is clean to carrying out purging inside heat exchanger shell 3 after completing,
And sealing safeguard measure is carried out to entrance.
Flexible cable 4, which is removed, to be completed to need that enclosure interior purge totally, and entrance is sealed and protected later
Measure.
According to heat exchanger tube side pneumatic test pressure by calculating to this equipment and heat exchange before pressure test is carried out
Device housing 3 carries out strength check, the specification of the flexible cable 4 of winding and the number of turns, the number of plies of winding, further determines that required flexible cable 4
Coiling length；It is first that the influences such as the overlap on 3 surface of heat exchanger shell, anvil cinder fitting sundries cleaning is dry when carrying out pressure test
Only, blind area reinforcing ring 2 is linked in and taken on the outside of place's cylinder, the cutting line of blind area reinforcing ring 2 should be with 3 axis of heat exchanger shell
It is parallel, and ensure that blind area reinforcing ring 2 can be fitted closely with heat exchanger shell 3；Pressure test after the assay was approved, should be in heat exchange
3 cavity internal pressure of device housing can remove the 4 interim pressure parts of grade of flexible cable after the completion of all releasing.Have during pressure testing in this way
Connecting pipe 5 has leakage phenomenon, and repair welding can be carried out to connecting pipe 5 and is then further continued for carrying out pressure testing experiment.
Finally it should be noted that:Above example is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：It can still modify to specific embodiment of the present utility model or some technical characteristics are equally replaced
It changes；Without departing from the spirit of technical solutions of the utility model, should all cover in the claimed technical solution of the utility model
In range.
Claims (6)
1. the device of casing rigidity, is used in fixed tube sheet heat exchanger tube head during a kind of enhancing heat exchanger tube head pressure test
Pressure test process is set in heat exchanger shell (3), which is characterized in that
Connecting pipe (5), heat exchanger shell (3) and connecting pipe (5) are fixedly connected on the side wall of heat exchanger shell (3)
The blind area reinforcing ring (2) provided circumferentially about for taking over portion, it is firm that the back side of connecting pipe (5) upper flange is fixedly installed flange
Degree enhances ring (7), and blind plate is fixed on the flange of connecting pipe (5), pressure gauge component (6) is fixedly installed on blind plate, described
Heat exchanger shell (3), blind area reinforcing ring (2), several increase intensity flexible cables (4), winding side are wound in connecting pipe (5)
To for circumferential spiral winding, the joint of end uses wire tensioner (8) to connect between flexible cable (4).
2. the device of casing rigidity when enhancing heat exchanger tube head pressure test according to claim 1, which is characterized in that institute
The blind area reinforcing ring (2) stated is formed for the cylinder of two semi-cylindrical shaped structures, and the connecting portion of described two cylinders wherein one end is in
Circular trough is set and the connecting portion is placed on connecting pipe (5) root, internal diameter and the heat exchanger shell (3) of blind area reinforcing ring (2)
Outer diameter is identical, and the axis of blind area reinforcing ring (2) is overlapped with heat exchanger shell (3) axis.
3. the device of casing rigidity when enhancing heat exchanger tube head pressure test according to claim 1, which is characterized in that method
Blue rigidity enhancing ring (7) is made of two semiorbicular arc panels, internal diameter and the connecting pipe (5) of rigidity of flange enhancing ring (7)
It is identical.
4. the device of casing rigidity when enhancing heat exchanger tube head pressure test according to claim 1, which is characterized in that soft
When rope is winding of single layer, from the heat exchanger tube sheet (1) of heat exchanger shell (3) end and heat exchanger shell (3) during winding
Start to wind as beginning at solder design；When flexible cable is multi-lay winding, interlock conduct from both ends tube sheet and housing attachment weld
Wind starting point.
5. the device of casing rigidity when enhancing heat exchanger tube head pressure test according to claim 1, which is characterized in that even
The winding of jointed tubular workpieces (5) is since at connecting pipe (5) and heat exchanger shell (3) solder design.
6. the device of casing rigidity when enhancing heat exchanger tube head pressure test according to claim 1, which is characterized in that institute
State a diameter of 4-6mm of flexible cable (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721550724.9U CN207516172U (en) | 2017-11-20 | 2017-11-20 | The device of casing rigidity during a kind of enhancing heat exchanger tube head pressure test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721550724.9U CN207516172U (en) | 2017-11-20 | 2017-11-20 | The device of casing rigidity during a kind of enhancing heat exchanger tube head pressure test |
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| Publication Number | Publication Date |
|---|---|
| CN207516172U true CN207516172U (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721550724.9U Active CN207516172U (en) | 2017-11-20 | 2017-11-20 | The device of casing rigidity during a kind of enhancing heat exchanger tube head pressure test |
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| CN (1) | CN207516172U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782631A (en) * | 2017-11-20 | 2018-03-09 | 濮阳市海林特种设备制造防护有限公司 | The device and pressure-measuring method of casing rigidity when strengthening heat exchanger tube head pressure test |
-
2017
- 2017-11-20 CN CN201721550724.9U patent/CN207516172U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107782631A (en) * | 2017-11-20 | 2018-03-09 | 濮阳市海林特种设备制造防护有限公司 | The device and pressure-measuring method of casing rigidity when strengthening heat exchanger tube head pressure test |
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