CN201740746U - Tube-tube sheet weld radiographic inspection auxiliary tool of heat exchanger - Google Patents
Tube-tube sheet weld radiographic inspection auxiliary tool of heat exchanger Download PDFInfo
- Publication number
- CN201740746U CN201740746U CN2009202475156U CN200920247515U CN201740746U CN 201740746 U CN201740746 U CN 201740746U CN 2009202475156 U CN2009202475156 U CN 2009202475156U CN 200920247515 U CN200920247515 U CN 200920247515U CN 201740746 U CN201740746 U CN 201740746U
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- filter
- heat exchanger
- barricade
- tube
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Abstract
The utility model discloses a tube-tube sheet weld radiographic inspection auxiliary tool of a heat exchanger, which comprises a filter plate, a shield plate, a connecting device and a positioning device, wherein the shield plate is connected with the filter plate through the connecting device, and the filter plate is in a rectangular structure with more than three round holes; and the shield plate is in a rectangular structure with round holes with the same number, position and size as the round holes of the filter plate, and the positioning device is arranged in the round holes at the two ends of the shield plate. The inspection auxiliary tool can position once and inspect a plurality of tube-tube sheet welds, thereby improving production efficiency. The utility model adopts the positioning device to position and ensures that the position inspected each time can be accurately positioned, thereby improving the repeatability of inspection and ensuring the inspection effect. The utility model has simple structure and selected common materials of parts, thereby saving manufacturing cost. The utility model improves the efficiency and effect of inspection, thereby saving inspection cost.
Description
Technical field
The utility model relates to the ray detecting apparatus of heat interchanger in a kind of Non-Destructive Testing field, particularly a kind of heat exchanger tube-panel weld ray detection accessory.
Background technology
Heat interchanger is a kind of visual plant in petrochemical complex and the nuclear industry field; shell-and-tube heat exchanger is exactly wherein very common a kind of heat interchanger; generally there is the pipe-pipe sheet welded structure in shell-and-tube heat exchanger, and this structure is to guarantee that two kinds of heat transferring mediums of heat interchanger are isolated and the important contact of sealing.Because the weldering meat of pipe-pipe sheet corner connection welding joint is thinner, even little weld defects also can reduce the sealing and the strength of joint of such joint widely.Investigation shows that gas hole defect is the major reason that causes pipe-pipe sheet corner connection welding joint leakage failure.In one to three year after equipment comes into operation, because the effect of corrosion, penetrating can appear in the position that has pore to exist, and leaks, and causes stopping production, and causes heavy economic losses and environmental pollution.
The inherent vice that detects in pipe-panel weld is a difficult problem.In theory, magnetic detects and can detect surface and near surface flaw, but when using on the pipe-pipe sheet weld seam, the detection effect of near surface flaw is bad; The applicable cases of employing ultrasonic technology detection pipe-panel weld can not be satisfactory---and detection system costs an arm and a leg, and on-the-spot adaptive faculty is poor, and low to the detection sensitivity of pore.And conventional ray detection method causes detecting poor repeatability, detection efficiency is low and detects the cost height owing to can't the pipe-pipe sheet weld seam be implemented to take a picture.
Summary of the invention
Be to solve the problems referred to above that prior art exists, the utility model will design and a kind ofly detect good reproducibility, detection efficiency height and detect heat exchanger tube with low cost-panel weld ray detection accessory.
To achieve these goals, the technical solution of the utility model is as follows: a kind of heat exchanger tube-panel weld ray detection accessory is made up of filter, barricade, coupling arrangement, locating device, described barricade is connected by coupling arrangement with filter, described filter is a rectangle structure, have 3 above circular holes, described barricade is a rectangle structure, have the circular hole with filter equal number, same position and same size, described locating device is installed in the circular hole at two ends on the barricade.
Barricade described in the utility model is made less than 26 metal material by atomic number, and described filter is made more than or equal to 26 metal material by atomic number.
Coupling arrangement described in the utility model is made up of external thread sleeve and set nut, and described external thread sleeve bore is less than ips, and an end is fixed on the circular hole place of filter, and the other end is connected with set nut by screw thread.
Locating device described in the utility model is made up of restricted plug and setscrew nut, and described restricted plug one end is cylindrical, and external diameter equals ips; The other end is a double-screw bolt, and external diameter equals the external thread sleeve bore, is connected with setscrew nut by screw thread.
The optimal material of barricade described in the utility model is aluminium, magnesium and alloy thereof, and the optimal material of described filter is iron, lead and alloy thereof.
Locating device described in the utility model can be installed on the barricade arbitrarily in two circular holes.
Compared with prior art, the utlity model has following beneficial effect:
1, owing to the utility model one-time positioning, can detect a plurality of pipe-pipe sheet weld seams, thereby improve production efficiency.
2, because the utility model adopts locating device to position, and guarantee that the position of detection can accurately be located at every turn, thereby improved the repeatability that detects, and guaranteed the detection effect.
3, because the utility model is simple in structure, parts are selected common material for use, saved manufacturing cost,, thereby saved the detection cost because the utility model has improved the efficient and the effect that detect.
Description of drawings
3 in the total accompanying drawing of the utility model, wherein:
Fig. 1 is that heat exchanger tube-panel weld ray detection accessory is installed in the synoptic diagram of detected position.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the partial enlarged drawing of cutting the district open of Fig. 2.
Among the figure: 1, barricade, 2, filter, 3, external thread sleeve, 4, set nut, 5, restricted plug, 6, setscrew nut, 7, tube sheet 8, pipe 9, weld seam, 10, film, 11, radiographic source, 12, the radiographic source conduit.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.Shown in Fig. 1-5, a kind of heat exchanger tube-panel weld ray detection accessory is made up of filter 2, barricade 1, coupling arrangement, locating device, described barricade 1 and filter 2 are connected by coupling arrangement, described filter 2 is a rectangle structure, have the circular hole more than 3, described barricade 1 is a rectangle structure, has the circular hole with filter 2 equal numbers, same position and same size, and described locating device is installed in the circular hole at two ends on the barricade 1.Described barricade 1 is made less than 26 metal material by atomic number, and described filter 2 is made more than or equal to 26 metal material by atomic number.Described coupling arrangement is made up of external thread sleeve 3 and set nut 4, and described external thread sleeve 3 internal diameters are less than pipe 8 internal diameters, and an end is fixed on the circular hole place of filter 2, and the other end is connected with set nut 4 by screw thread.Described locating device is made up of restricted plug 5 and setscrew nut 6, and described restricted plug 5 one ends are cylindrical, and external diameter equals pipe 8 internal diameters; The other end is a double-screw bolt, and external diameter equals external thread sleeve 3 internal diameters, is connected with setscrew nut 6 by screw thread.
The optimal material of barricade 1 described in the utility model is aluminium, magnesium and alloy thereof, and the optimal material of described filter 2 is iron, lead and alloy thereof.Described locating device can be installed on the barricade 1 arbitrarily in two circular holes.
Detection method of the present utility model may further comprise the steps:
A, placement film 10: elder generation punches film 10 and is placed on the filter 2, then barricade 1 is pressed on the film 10, at last set nut 4 is tightened on the external thread sleeve 3, makes filter 2, film 10 and barricade 1 constitute an integral body;
B, location: the double-screw bolt end of restricted plug 5 is passed from the circular hole of filter 2 sides, and fastening, the cylindrical end of restricted plug 5 is inserted in the pipe 8, heat exchanger tube-panel weld ray detection accessory is fixed on heat exchanger tube sheet 7 sides with setscrew nut 6;
C, detection: the radiographic source conduit 12 that will be fixed with radiographic source 11 is put into each circular hole of barricade 1 successively, and butt welded seam 9 detects respectively.
Claims (4)
1. heat exchanger tube-panel weld ray detection accessory, it is characterized in that: form by filter (2), barricade (1), coupling arrangement, locating device, described barricade (1) is connected by coupling arrangement with filter (2), described filter (2) is a rectangle structure, have the circular hole more than 3, described barricade (1) is a rectangle structure, have the circular hole with filter (2) equal number, same position and same size, described locating device is installed in barricade (1) and goes up in the circular hole at two ends.
2. heat exchanger tube according to claim 1-panel weld ray detection accessory, it is characterized in that: described barricade (1) is made less than 26 metal material by atomic number, and described filter (2) is made more than or equal to 26 metal material by atomic number.
3. heat exchanger tube according to claim 1-panel weld ray detection accessory, it is characterized in that: described coupling arrangement is made up of external thread sleeve (3) and set nut (4), described external thread sleeve (3) internal diameter is less than pipe (8) internal diameter, one end is fixed on the circular hole place of filter (2), and the other end is connected with set nut (4) by screw thread.
4. heat exchanger tube according to claim 1-panel weld ray detection accessory, it is characterized in that: described locating device is made up of restricted plug (5) and setscrew nut (6), described restricted plug (5) one ends are cylindrical, and external diameter equals pipe (8) internal diameter; The other end is a double-screw bolt, and external diameter equals external thread sleeve (3) internal diameter, is connected with setscrew nut (6) by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202475156U CN201740746U (en) | 2009-10-22 | 2009-10-22 | Tube-tube sheet weld radiographic inspection auxiliary tool of heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202475156U CN201740746U (en) | 2009-10-22 | 2009-10-22 | Tube-tube sheet weld radiographic inspection auxiliary tool of heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201740746U true CN201740746U (en) | 2011-02-09 |
Family
ID=43556023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202475156U Expired - Fee Related CN201740746U (en) | 2009-10-22 | 2009-10-22 | Tube-tube sheet weld radiographic inspection auxiliary tool of heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201740746U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181179A (en) * | 2014-07-28 | 2014-12-03 | 甘肃蓝科石化高新装备股份有限公司 | Radiography method of pipe-pipe plate butt weld |
| CN104345069B (en) * | 2013-07-25 | 2017-06-06 | 中国石油天然气股份有限公司 | X-ray detection workpiece circumference positioning device |
-
2009
- 2009-10-22 CN CN2009202475156U patent/CN201740746U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104345069B (en) * | 2013-07-25 | 2017-06-06 | 中国石油天然气股份有限公司 | X-ray detection workpiece circumference positioning device |
| CN104181179A (en) * | 2014-07-28 | 2014-12-03 | 甘肃蓝科石化高新装备股份有限公司 | Radiography method of pipe-pipe plate butt weld |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20141022 |
|
| EXPY | Termination of patent right or utility model |