CN106383008A - Assembly for pressure test of floating head type heat exchanger - Google Patents
Assembly for pressure test of floating head type heat exchanger Download PDFInfo
- Publication number
- CN106383008A CN106383008A CN201610701895.0A CN201610701895A CN106383008A CN 106383008 A CN106383008 A CN 106383008A CN 201610701895 A CN201610701895 A CN 201610701895A CN 106383008 A CN106383008 A CN 106383008A
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- CN
- China
- Prior art keywords
- flange
- floating head
- heat exchanger
- cylinder
- outer cylinder
- 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.)
- Pending
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Classifications
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses an assembly for a pressure test of a floating head type heat exchanger. The assembly comprises a double-cylinder assembly which is connected with a side flange on a shell of a floating head. The structure of the double-cylinder assembly comprises an outer cylinder; the outer cylinder is sleeved outside an inner cylinder; a retainer ring is arranged at the inner wall of the outer cylinder, and the retainer ring is provided with a sealing ring; the sealing ring can be clamped at a circumferential side of a floating head pipe plate; the outer end of the inner cylinder protrudes out of the outer cylinder; flanges are arranged at the outer ends of the inner and outer cylinders, and the flanges at the outer ends of the inner and outer cylinders are connected through bolts; after the bolts are tightly screwed, the bottom part of the inner cylinder can lean against the side of the sealing ring to seal the retainer ring and the floating head pipe plate; and a bottom flange is arranged at the bottom of the outer cylinder, and the bottom flange is fixedly connected with the side flange in sealing manner through the bolts. The assembly provided by the invention is simple and practical in structure and convenient for operation, the work efficiency is greatly improved, and the welding line between the floating head pipe plate and a heat exchanging pipe is effectively avoided from being cracked, so that the assembly can be conveniently applied to the floating head type heat exchanger to carry out the pressure test.
Description
Technical field
The present invention relates to for the pressure testing fixture for floating head type heat exchanger detecting floating tubesheet and heat exchanger tube weldquality.
Background technology
Heat exchanger is a kind of energy-saving equipment realizing heat transfer between material, be widely used in oil, chemical industry, food,
In the industries such as metallurgy.The maximum feature of movable tube sheets heat exchanger is：The tube sheet at two ends, one end tube sheet is fixed on housing, the other end
Tube sheet is not connected with housing, and this end claims to raise the nose above water to breathe, and this end pipe plate is referred to as floating tubesheet.When being heated, tube bank is permissible together with floating tubesheet
Move freely in housing vertically；The thermal expansion of this heat exchanger shell and tube bank is free, and completely eliminating the temperature difference should
Power, tube bank can be extracted out, is easy to clean.Floating end structure of floating heat exchanger includes：Floating head end housing, in floating head end housing
Be provided with side flange, floating tubesheet be provided with heat exchanger tube, floating tubesheet can together with heat exchanger tube in housing vertically from
By moving.After the completion of floating head type tube sheet with heat exchange sealing of tube, generally housing to be carried out with the water pressure test, test heat exchanger tube and float
Whether the weld seam between head tube plate has seepage, and traditional test device is using a taper tool assembly, and it airtight is welded on
Between side flange and floating tubesheet, after the completion of pressure testing, the taper tool assembly playing airtight effect is cut off, and by floating tubesheet
Attachment weld polishes.Weld and cut taper tool assembly and the workload of polishing welding seams is larger, and in cutting taper tool assembly
And polish easy weld seam between drawing crack floating tubesheet and heat exchanger tube during weld seam, shadow is caused to the sealing surface of floating tubesheet
Ring, thus affecting the quality of product.
Content of the invention
The present invention need solve problem be provide a kind of structure simple, workload is little, greatly improve work efficiency and
It is avoided that the pressure testing fixture for floating head type heat exchanger of weld seam between drawing crack floating tubesheet and heat exchanger tube.
For solving the above problems, the technical solution used in the present invention is：Pressure testing fixture for floating head type heat exchanger, including：With
The double shell frock that side flange in floating head end housing is connected, the structure of described double shell frock is：Outer cylinder body, outer cylinder body
It is sleeved on inner core external, described outer cylinder body inwall is provided with back-up ring, back-up ring is provided with sealing ring, described sealing ring energy
It is clamped on floating tubesheet circumference side, the outer end of inner barrel protrudes from outer cylinder body, and the outer end of inside and outside cylinder is all fixedly installed method
Orchid, the flange of inside and outside cylinder outer end is bolted, and after bolt is tightened, the bottom of inner barrel can prop up the side of sealing ring
Make sealing between back-up ring and floating tubesheet；Flange in the bottom, described flange in the bottom and side are provided with the bottom of described outer cylinder body
Flange is fixedly connected by bolt seal.
Further, aforesaid pressure testing fixture for floating head type heat exchanger, wherein, between described flange in the bottom and side flange
It is provided with seal washer.
It is an advantage of the invention that：Simple and practical, easy to operate, substantially increase work efficiency, and can be prevented effectively from
Weld seam between drawing crack floating tubesheet and heat exchanger tube, substantially increases the quality of product.
Brief description
Fig. 1 is the structural representation of pressure testing fixture for floating head type heat exchanger of the present invention.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, pressure testing fixture for floating head type heat exchanger, double including be connected with the side flange 3 in floating head end housing 1
Cylinder frock, the structure of described double shell frock is：Outer cylinder body 4, outer cylinder body 4 is sleeved on outside inner barrel 5, described outer cylinder body
Back-up ring 41 is provided with 4 inwalls, back-up ring 41 is provided with sealing ring 6, described sealing ring 6 can be clamped on floating tubesheet 2 circumference
Side, the outer end of inner barrel 5 protrudes from outer cylinder body 4, inner barrel 5 outer end is fixedly installed inner flange 7, on outer cylinder body 4 outer end
It is fixedly installed outward flange 8, the inner flange 7 on inner barrel 5 outer end passes through the first bolt 9 with the outward flange 8 on outer cylinder body 4 outer end
Connect, after the first bolt 9 is tightened, the side that the bottom of inner barrel 5 can prop up sealing ring 6 makes between back-up ring 41 and floating tubesheet 2
Sealing；Flange in the bottom 10 is provided with the described bottom of outer cylinder body 4, described flange in the bottom 10 is coordinated with side flange 3 and leads to
Cross the second bolt 11 to be sealedly and fixedly connected.It is provided with seal washer 12 between described flange in the bottom 10 and side flange 3.
During pressure testing, only the flange in the bottom 10 of pressure testing fixture for floating head type heat exchanger need to be fixed on side by the second bolt 11
On flange 3, due to being provided with seal washer 12 between side flange 3 and flange in the bottom 10, so tighten the second bolt 11, side method
Just fixation can be sealed between blue 3 and flange in the bottom 10；Back-up ring 41 in pressure testing fixture for floating head type heat exchanger can be clamped on floating head
Tube sheet 2 circumference side, when tightening the first bolt 9, inner barrel 5 moves in cylinder 4 axially outward, the bottom of such inner barrel 5
Tightly against the side of sealing ring 6, so that sealing ring 6 is radially expanded, until the first bolt 9 is tightened completely, so seal
Radially distending completely makes sealing between floating tubesheet 2 and back-up ring 41 to circle 6.In the present invention, sealing ring 6 uses oil immersion stone
Cotton packing.The water pressure test can be carried out to the housing of whole movable tube sheets heat exchanger with that, detect whether seepage.Inspection finishes
Afterwards, only need to unclamp the second bolt 11 between flange in the bottom 10 and side flange, thus structure for pressure test can be removed, raise the nose above water to breathe
Formula heat exchanger pressure testing fixture can continue to reuse.Whole pressure testing process does not need to weld, and so substantially increases work
Efficiency, and it is prevented effectively from the weld seam between drawing crack floating tubesheet 2 and heat exchanger tube 13, substantially increase the quality of product.
Claims (2)
1. pressure testing fixture for floating head type heat exchanger it is characterised in that：Including：Be connected with the side flange in floating head end housing is double
Cylinder frock, the structure of described double shell frock is：Outer cylinder body, it is external, in described outer tube body that outer cylinder body is sleeved on inner core
Back-up ring is provided with wall, back-up ring is provided with sealing ring, described sealing ring can be clamped on floating tubesheet circumference side, inner barrel
Outer end protrude from outer cylinder body, the outer end of inside and outside cylinder is all fixedly installed flange, and the flange of inside and outside cylinder outer end passes through spiral shell
Tether and connect, after bolt is tightened, the side that the bottom of inner barrel can prop up sealing ring makes sealing between back-up ring and floating tubesheet；Described
Flange in the bottom is provided with the bottom of outer cylinder body, described flange in the bottom is fixedly connected by bolt seal with side flange.
2. pressure testing fixture for floating head type heat exchanger according to claim 1 it is characterised in that：Described flange in the bottom with
It is provided with seal washer between side flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701895.0A CN106383008A (en) | 2016-08-19 | 2016-08-19 | Assembly for pressure test of floating head type heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610701895.0A CN106383008A (en) | 2016-08-19 | 2016-08-19 | Assembly for pressure test of floating head type heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106383008A true CN106383008A (en) | 2017-02-08 |
Family
ID=57916846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610701895.0A Pending CN106383008A (en) | 2016-08-19 | 2016-08-19 | Assembly for pressure test of floating head type heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106383008A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543658A (en) * | 2017-10-23 | 2018-01-05 | 张化机（苏州）重装有限公司 | A kind of mounting structure of test fixture and floating head heat exchanger |
-
2016
- 2016-08-19 CN CN201610701895.0A patent/CN106383008A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107543658A (en) * | 2017-10-23 | 2018-01-05 | 张化机（苏州）重装有限公司 | A kind of mounting structure of test fixture and floating head heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170208 |
|
| WD01 | Invention patent application deemed withdrawn after publication |