CN202974820U - Heat exchanger tube bundle shell pass side clearance impermeable testing device - Google Patents
Heat exchanger tube bundle shell pass side clearance impermeable testing device Download PDFInfo
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- CN202974820U CN202974820U CN 201220732576 CN201220732576U CN202974820U CN 202974820 U CN202974820 U CN 202974820U CN 201220732576 CN201220732576 CN 201220732576 CN 201220732576 U CN201220732576 U CN 201220732576U CN 202974820 U CN202974820 U CN 202974820U
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- heat exchanger
- tube
- exchanger tube
- pressure testing
- shell side
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Abstract
The utility model discloses a heat exchanger tube bundle shell pass side clearance impermeable testing device which comprises a tube plate and a heat exchange tube, wherein the tube plate is provided with a tube hole; the heat exchange tube is inserted into the tube hole and is connected with the tube plate through a connecting mode of combining expanded tube joint and welding; the shell pass side of the tube plate is provided with a shell with a cavity; one end of the shell is welded with the shell pass side of the tube plate; the other end of the shell is welded with a sealing plate; the cavity and the sealing plate form a closed space trough the tube plate; a tube mouth at one end of the heat exchange tube, which stretches into the sealing space, is provided with a closed plug; the shell is provided with a test pressure access, a dye penetrant inlet and an exhaust port; the test pressure access is connected with a test pressure device; and the test pressure device comprises a test pressure machine, a test pressure gauge, a temperature tester and a first control valve. According to the testing device, the impermeable capacity of a gap between the shell pass side tube hole of the test tube bundle connecting structure and the heat exchange tube can be intuitively detected, and the testing device has the characteristics of simple structure, easiness for manufacture, low cost, intuitiveness, effectiveness and easiness for implementation.
Description
Technical field
The utility model belongs to heat transmission equipment technical field in air-conditioning, Coal Chemical Industry, petroleum chemical industry, particularly relates to a kind of infiltration experiment device of coal hydrogen manufacturing superheater, the anti-crevice corrosion ability of heat exchanger tube shell side side.
Background technology
So-called crevice corrosion (also being crevice corrosion) is exactly generally that easily corrode at those fluids immobilising dead angles.Crevice corrosion is a kind of form of local corrosion, and it may betide among the gap that solution stagnates or in the surface of shielding.The condition that crevice corrosion forms comprises: the one, and geometric element, namely stitch the wide 0.025mm～0.1mm that is, this width is enough to allow solution to enter in the gap, but gap width is enough narrow to guarantee that solution in the gap is in retaining state and makes that difficulty occurs the material migration between solution inside and outside the gap again; The 2nd, the inside and outside solution in gap has potential difference (PD), and in seam, metal consists of the short circuit primary element with the outer metal of seam, produces strong chemical reaction in seam.
Can find out from the forming process of crevice corrosion, serious and dielectric leakage can cause the shell-and-tube heat exchanger of serious consequence for shell side medium crevice corrosion tendency, adopting tube sheet shell side side weld syndeton is to prevent crevice corrosion effective method the most, but because pipe end and the machining of drilling are comparatively complicated, and heat exchanger tube and pore assembling require quite high, the welding difficulty, the reason that structural weldability is poor makes in the situation that a lot of expanded joint mode of still selecting guarantees.In order whether to satisfy the requirement that prevents crevice corrosion in the gap of verifying heat exchanger tube shell side side pipe plate pore and heat exchanger tube, and in tube bank situation that affects on the gap of pore and heat exchanger tube during working condition, therefore, need badly a kind of heat exchanger tube shell side side clearance experiment of seepage device is provided.
Summary of the invention
The purpose of this utility model is to avoid weak point of the prior art and a kind of heat exchanger tube shell side side clearance experiment of seepage device is provided, and it has the characteristics of simple in structure, with low cost and easy realization.
The purpose of this utility model is achieved through the following technical solutions:
A kind of heat exchanger tube shell side side clearance experiment of seepage device is provided, include tube sheet and heat exchanger tube, described tube sheet is provided with pore, described heat exchanger tube inserts described pore and is connected the connected mode of use by expanded joint with welding and is connected with described tube sheet, wherein, the shell side side of described tube sheet is provided with the housing with cavity, an end of described housing and the welding of the shell side side of described tube sheet, and the other end of described housing is welded in shrouding; Described cavity forms confined space by described tube sheet and described shrouding; The end mouth of pipe that described heat exchanger tube stretches into described seal cavity is provided with the sealing plug; Described housing offers pressure testing access port, dye penetrant entrance and exhausr port; Described pressure testing access port is connected with pressure testing device, and described pressure testing device includes pressure testing machine, tensimeter, temperature-measuring machine and the first operation valve.
Wherein, described pressure testing access port is arranged at the top of described housing, and described dye penetrant entrance is arranged at the bottom of described housing.
Wherein, described pressure testing access port and described dye penetrant entrance are arranged on same vertical curve.
Wherein, described exhausr port is arranged at the middle part of described shrouding.
Wherein, described exhausr port is connected with the second operation valve.
Wherein, described dye penetrant entrance is provided with dismountable plug.
Wherein, described tensimeter be connected temperature-measuring machine and be arranged on the pipeline that is connected with described pressure testing access port, and described tensimeter and described temperature measurer are in the same plane setting.
The beneficial effects of the utility model:
A kind of heat exchanger tube shell side side clearance experiment of seepage device of the present utility model, can detect intuitively the shell side side pipe hole of test tube bank syndeton and the impermeable ability in the gap between heat exchanger tube, have simple in structure, easy to manufacture, cost is low, characteristics effective, easy to implement directly perceived.But by this test unit extension device serviceable life, be convenient to practical application and popularization on engineering.
Description of drawings
The utility model is described in further detail to utilize accompanying drawing, but the embodiment in accompanying drawing does not consist of any restriction of the present utility model, for those of ordinary skill in the art, under the prerequisite of not paying creative work, can also obtain according to the following drawings other accompanying drawing.
Fig. 1 is the structural representation of the test tube bank of a kind of heat exchanger tube shell side side clearance experiment of seepage device of the present utility model.
Fig. 2 is the use view of the test pressure testing of a kind of heat exchanger tube shell side side clearance experiment of seepage device of the present utility model.
Include in Fig. 1 and Fig. 2:
1---tube sheet, 2---heat exchanger tube, 3---housing, 4---pressure testing access port, 5---shrouding, 6---sealing plug, 7---dye penetrant entrance, 8---exhausr port, 9---the first operation valve, 10---pressure testing machine, 11---dismountable plug, 12---the second operation valve, 13---tensimeter, 14---temperature measurer.
Embodiment
With the following Examples the utility model is further described.
The embodiment of a kind of heat exchanger tube shell side side clearance experiment of seepage device of the present utility model, as depicted in figs. 1 and 2, include tube sheet 1 and heat exchanger tube 2, described tube sheet 1 is provided with pore, and described heat exchanger tube 2 inserts described pores and is connected the connected mode of use by expanded joint with welding and is connected with described tube sheet 1.Tube bank is the core component of tubular heat exchanger, tube bank is comprised of heat exchanger tube 2, support plate (perhaps baffle) and tube sheet 1 usually, heat exchanger tube 2 in a row is by support plate (perhaps baffle) supporting, its two ends are pierced in the pore of tube sheet 1, and be connected with tube sheet 1, thereby sealing and the intensity of assurance joint.By the combination of tube bank with the dividing plate of bobbin carriage, heat exchanger tube 2 can be divided into several flow processs, so that medium flows back and forth, thereby can extend heat exchange process in heat exchanger tube 2, increase heat-exchange time, fully with the outer shell side media for heat exchange of pipe.The forced seal by welding or flange bolt shimming such as above-mentioned tube sheet 1 and shell and bobbin carriage etc. fixedly assembling namely gets a tubular heat exchanger.
Improvement of the present utility model is, the shell side side of described tube sheet 1 is provided with the housing 3 with cavity, an end of described housing 3 and the welding of the shell side side of described tube sheet 1, and the other end of described housing 3 is welded in shrouding 5; Described cavity forms confined space by described tube sheet 1 and described shrouding 5; The end mouth of pipe that described heat exchanger tube 2 stretches into described seal cavity is provided with sealing plug 6; Described housing 3 offers pressure testing access port 4, dye penetrant entrance 7 and exhausr port 8; Described pressure testing access port 4 is connected with pressure testing device, and described pressure testing device includes pressure testing machine 10, tensimeter 13, temperature-measuring machine and the first operation valve 9.Wherein, pressure testing access port 4 is connected with T shape pipeline, and an end of T shape pipeline is connected with an end of the first operation valve 9, and the other end of the first operation valve 9 is connected with pressure testing machine 10, and tensimeter 13, temperature-measuring machine are arranged at the horizontal part of T shape pipeline.Wherein, the radical of the heat exchanger tube 2 of test use is selected on demand, can select two in the present embodiment.
Compared with prior art, this heat exchanger tube shell side side clearance experiment of seepage device, can detect intuitively the shell side side pipe hole of test tube bank syndeton and the impermeable ability in the gap between heat exchanger tube 2, have simple in structure, easy to manufacture, cost is low, characteristics effective, easy to implement directly perceived.
If when the shell side side of above-mentioned tube sheet 1 has the stainless steel layer of built-up welding or tube sheet 1 for whole stainless steel, overlay cladding need be set.
Concrete, described pressure testing access port 4 is arranged at the top of described housing 3, and described dye penetrant entrance 7 is arranged at the bottom of described housing 3.Preferably, this pressure testing access port 4 is opened in the middle part on housing 3 tops, and this dye penetrant entrance 7 is opened in the middle part of housing 3 bottoms.
Concrete, described pressure testing access port 4 and described dye penetrant entrance 7 are arranged on same vertical curve.Easy to process.
Concrete, described exhausr port 8 is arranged at the middle part of described shrouding 5.Deflation rate is high.
Concrete, described exhausr port 8 is connected with the second operation valve 12.The second operation valve 12 is used for controlling opening and closing of exhausr port 8.
Concrete, described dye penetrant entrance 7 is provided with dismountable plug 11.When needs add dye penetrant, open this plug, when being full of dye penetrant, seal this dismountable plug 11.
Concrete, described tensimeter 13 be connected temperature-measuring machine and be arranged on the pipeline that is connected with described pressure testing access port 4, and described tensimeter 13 and described temperature measurer 14 are in the same plane setting.
A kind of above-mentioned heat exchanger tube shell side side clearance experiment of seepage method includes following steps:
Concrete, dye penetrant is any in AEO, gentian violet solution, aldrich mixture.
Compared with prior art, this heat exchanger tube shell side side clearance experiment of seepage method, by restraining according to selected tube sheet 1 and heat exchanger tube 2 connected mode manufacturing simulations, simulated condition is carried out the pressure testing test, check tube sheet 1 and the anti-crevice corrosion ability of heat exchanger tube 2 shell side sides under normal temperature and working condition obtain rational syndeton, extension device serviceable life, this gap experiment of seepage method is easy and simple to handle, is convenient to practical application and popularization on engineering.
Should be noted that at last; above embodiment is only in order to illustrate the technical solution of the utility model; but not to the restriction of the utility model protection domain; although with reference to preferred embodiment, the utility model has been done to explain; those of ordinary skill in the art is to be understood that; can modify or be equal to replacement the technical solution of the utility model, and not break away from essence and the scope of technical solutions of the utility model.
Claims (7)
1. heat exchanger tube shell side side clearance experiment of seepage device, include tube sheet and heat exchanger tube, described tube sheet is provided with pore, described heat exchanger tube inserts described pore and is connected the connected mode of use by expanded joint with welding and is connected with described tube sheet, it is characterized in that: the shell side side of described tube sheet is provided with the housing with cavity, one end of described housing and the welding of the shell side side of described tube sheet, the other end of described housing is welded in shrouding; Described cavity forms confined space by described tube sheet and described shrouding; The end mouth of pipe that described heat exchanger tube stretches into described seal cavity is provided with the sealing plug; Described housing offers pressure testing access port, dye penetrant entrance and exhausr port; Described pressure testing access port is connected with pressure testing device, and described pressure testing device includes pressure testing machine, tensimeter, temperature-measuring machine and the first operation valve.
2. a kind of heat exchanger tube shell side side clearance experiment of seepage device according to claim 1, it is characterized in that: described pressure testing access port is arranged at the top of described housing, and described dye penetrant entrance is arranged at the bottom of described housing.
3. a kind of heat exchanger tube shell side side clearance experiment of seepage device according to claim 2, it is characterized in that: described pressure testing access port and described dye penetrant entrance are arranged on same vertical curve.
4. a kind of heat exchanger tube shell side side clearance experiment of seepage device according to claim 1, it is characterized in that: described exhausr port is arranged at the middle part of described shrouding.
5. a kind of heat exchanger tube shell side side clearance experiment of seepage device according to claim 1, it is characterized in that: described exhausr port is connected with the second operation valve.
6. a kind of heat exchanger tube shell side side clearance experiment of seepage device according to claim 1, it is characterized in that: described dye penetrant entrance is provided with dismountable plug.
7. a kind of heat exchanger tube shell side side clearance experiment of seepage device according to claim 1, it is characterized in that: described tensimeter be connected temperature-measuring machine and be arranged on the pipeline that is connected with described pressure testing access port, and described tensimeter and described temperature measurer are in the same plane setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220732576 CN202974820U (en) | 2012-12-27 | 2012-12-27 | Heat exchanger tube bundle shell pass side clearance impermeable testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220732576 CN202974820U (en) | 2012-12-27 | 2012-12-27 | Heat exchanger tube bundle shell pass side clearance impermeable testing device |
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| Publication Number | Publication Date |
|---|---|
| CN202974820U true CN202974820U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220732576 Withdrawn - After Issue CN202974820U (en) | 2012-12-27 | 2012-12-27 | Heat exchanger tube bundle shell pass side clearance impermeable testing device |
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| Country | Link |
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| CN (1) | CN202974820U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018156A (en) * | 2012-12-27 | 2013-04-03 | 茂名重力石化机械制造有限公司 | Testing device and testing method for shell pass side clearance seepage-proofing of heat exchange tube bundle |
-
2012
- 2012-12-27 CN CN 201220732576 patent/CN202974820U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018156A (en) * | 2012-12-27 | 2013-04-03 | 茂名重力石化机械制造有限公司 | Testing device and testing method for shell pass side clearance seepage-proofing of heat exchange tube bundle |
| CN103018156B (en) * | 2012-12-27 | 2014-12-10 | 茂名重力石化机械制造有限公司 | Testing device and testing method for shell pass side clearance seepage-proofing of heat exchange tube bundle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130605 Effective date of abandoning: 20141210 |
|
| RGAV | Abandon patent right to avoid regrant |