CN111207891A - Detection device and method for plate pairs of semi-welded plate heat exchanger - Google Patents
Detection device and method for plate pairs of semi-welded plate heat exchanger Download PDFInfo
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- CN111207891A CN111207891A CN202010040573.2A CN202010040573A CN111207891A CN 111207891 A CN111207891 A CN 111207891A CN 202010040573 A CN202010040573 A CN 202010040573A CN 111207891 A CN111207891 A CN 111207891A
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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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
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Abstract
The invention discloses a detection device for a plate pair of a semi-welded plate heat exchanger, which comprises a supporting table, wherein a vertical frame and a water tank are arranged on the top surface of the supporting table; a lower pressing plate and a positioning stop block are fixedly arranged on the bottom surface of the water tank, test holes which correspond to the flow passage holes on the plate pairs to be detected one by one are arranged on the lower pressing plate, and each test hole comprises a gas blocking hole and a plurality of vent holes; one side of top board is articulated with the location dog, and the top surface of top board passes through the pneumatic cylinder to be connected with the top of grudging post, waits to detect the slab and to place in the top of holding down plate, and the runner hole is just to the test hole that corresponds, and the pneumatic cylinder can drive the top board and will wait to detect the slab and to compress tightly. The invention also provides a detection method of the semi-welded plate heat exchanger plate pair based on the detection device of the semi-welded plate heat exchanger plate pair, which comprises the following steps: and (3) introducing water into the water tank to enable the water to submerge the upper pressing plate, introducing high-pressure gas into the plate pair to be detected, and observing whether bubbles emerge from the water. The invention has simple structure and convenient use.
Description
Technical Field
The invention relates to the technical field of quality detection equipment, in particular to a detection device and a detection method for a plate pair of a semi-welded plate heat exchanger.
Background
The semi-welded plate heat exchanger has the advantages of high performance, space saving, low energy consumption, simple maintenance, modular application and the like, and is widely applied to the field of heat exchange. The semi-welded plate heat exchanger is one device comprising one channel plate pair, pressing plate with connecting pipes and guide rod connected together via bolts. The semi-welded plate heat exchanger mainly comprises a series of parts such as a semi-welded plate heat exchanger plate, a plate heat exchanger sealing ring, a fixed pressing plate, a movable pressing plate, an upper guide rod, a lower guide rod, a clamping bolt and the like. The plate pairs are formed by stamping two plates and are connected together in a welding mode, and in order to ensure the quality of the semi-welded plate heat exchanger, the quality of the plate pairs in the semi-welded plate heat exchanger needs to be detected.
At present, the quality detection means for the plate pairs of the half-welded plate heat exchanger are few, and the most common method is that an upper guide rod and a lower guide rod are connected and fixed on a fixed pressing plate through bolts, then the plate pairs of the half-welded plate heat exchanger and a plate heat exchanger sealing ring are sequentially assembled into the plate pair group of the half-welded plate heat exchanger, the plate group of the half-welded plate heat exchanger is installed between an upper guide rail and a lower guide rail according to requirements, a movable pressing plate is installed at the other side of the plate group of the half-welded plate heat exchanger, the movable pressing plate is connected with the fixed pressing plate through a clamping bolt, the plate pair group of the half-welded plate heat exchanger placed between the two pressing plates is clamped tightly, the assembled plate of the half-welded plate heat exchanger is blocked at a passage port at one end of the fixed pressing plate by a flange, high-pressure liquid (usually water) is filled into, indirectly reflect whether half welded plate heat exchanger plate to the condition that whether have not welded to the middle plate to, judge whether half welded plate heat exchanger plate has the quality problem to. Although the method solves the deformation problem existing in the detection of a single plate pair, the method can only detect which interval of the plate pair of the half-welded plate heat exchanger has a defect, but cannot know which plate pair has the quality problem, and the detection means is complicated and has low efficiency.
Patent 200810174216.4 discloses a method and a device for detecting leakage of a shell-and-tube heat exchanger, which comprises introducing helium gas into a tube nest in the shell-and-tube heat exchanger, vacuumizing a cavity formed by an outer wall of the shell and the tube nest by using a vacuum pump connected with the shell of the shell-and-tube heat exchanger, detecting the helium gas by using a helium mass spectrometer leak detector to detect the airflow at the outlet of the vacuum pump, and determining whether the tube nest introduced with the helium gas leaks. However, the method is only suitable for detecting the shell-and-tube heat exchanger, does not relate to the detection of the plate heat exchanger, has extremely high precision requirement on the whole system, has certain technical requirement on detection personnel when operating the helium mass spectrometer leak detector, and increases the detection cost when the tracer gas used in the detection is actually applied.
Chinese patent 201810165413.3 discloses a method for testing a negative pressure type graphite heat exchanger, wherein a plugging device is installed at one side of the heat exchanger during testing, and a testing head is inserted into the heat exchange tube at the other side of the heat exchanger to pass a vacuum pressure holding test. The state of the heat exchange tube is judged according to the pressure rise condition, and further, the heat exchange tube is connected with the detection head through the industrial personal computer, so that the one-by-one vacuum pressure maintaining test on the heat exchange tube is realized, and the states of different heat exchange tubes are judged. But is only suitable for detecting the air tightness of the shell-and-tube heat exchanger and does not relate to the detection of the plate heat exchanger.
Patent 201310412354.2 discloses a plate heat exchanger leak detection system and a detection method, which detect the assembled plate heat exchanger by a vacuum leak detection method, pump the primary side to a certain vacuum degree by a vacuum pump, then fill helium and nitrogen mixed tracer gas into the secondary side, and detect the helium leak condition by a mass spectrometer connected with the primary side. The method only can know the leakage condition of the heat exchanger plate pairs, but does not know which plate type heat exchanger plate has the leakage condition, and has high precision requirement and high technical level requirement for technicians.
Patent 201811356663.1 discloses a plate slab crack imaging system is used for carrying out quality testing to plate heat exchanger, and through making a video recording to plate heat exchanger's slab, the testing personnel still confirms whether there is the crackle on the plate heat exchanger slab through observing the image, but some extremely tiny crackles can not be observed to this kind of method, and require highly to the definition of the picture of taking a photograph, and testing personnel need certain detection experience, have improved the detection cost.
Disclosure of Invention
The invention aims to provide a device and a method for detecting a half-welded plate type heat exchanger plate pair, which are used for solving the problems in the prior art and are convenient to detect the half-welded plate type heat exchanger plate pair.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a detection device for a plate pair of a half-welded plate heat exchanger, which comprises a supporting table, wherein a vertical frame and a water tank with an opening at the top end are arranged on the top surface of the supporting table, and the vertical frame is positioned on one side of the water tank; the bottom surface of the water tank is fixedly provided with a lower pressing plate and a positioning stop block positioned on one side of the lower pressing plate, the lower pressing plate is provided with test holes corresponding to flow channel holes on a plate to be detected in a one-to-one mode, each test hole comprises a plugging hole and a plurality of vent holes, a supporting and expanding block is arranged in each plugging hole, a first sealing ring is sleeved above each supporting and expanding block, the diameter of each supporting and expanding block can be increased so as to tightly support the first sealing ring, and each vent hole is communicated with the side wall of the lower pressing plate through an inflation tube; one side of the upper pressure plate is hinged to the positioning stop block, the top surface of the upper pressure plate is connected with the top of the vertical frame through a hydraulic cylinder, one end of the hydraulic cylinder is rotatably connected with the upper pressure plate, the other end of the hydraulic cylinder is rotatably connected with the vertical frame, the plate pairs to be detected are placed above the lower pressure plate, the runner holes are opposite to the corresponding test holes, and the hydraulic cylinder can drive the upper pressure plate to compress the plate pairs to be detected.
Preferably, two parallel limiting ribs are fixedly arranged on the top surface of the lower pressure plate, the plate pair to be detected is located between the two limiting ribs, a third sealing ring is arranged on each vent hole, the third sealing ring is coaxial with the corresponding vent hole, the bottom surfaces of the first sealing ring and the third sealing ring are tightly attached to the top surface of the lower pressure plate, and the top surfaces of the first sealing ring and the third sealing ring are flush with the top surfaces of the limiting ribs; and a second sealing ring is arranged above each flow channel hole of the plate pair to be detected, and the second sealing ring is coaxial with the corresponding flow channel hole.
Preferably, the number of the positioning stop blocks is two, the two positioning stop blocks are respectively a first positioning stop block and a second positioning stop block, the two positioning stop blocks are parallel to each other, and the lower pressing plate is positioned between the two positioning stop blocks; the two positioning check blocks comprise vertical portions and horizontal portions, the horizontal portions are fixedly connected with the bottom surface of the water tank through screws, the upper pressing plate is hinged to the vertical portions of the second positioning check blocks through hinges, and the top surfaces of the second positioning check blocks are flush with the top surfaces of the limiting ribs.
Preferably, the width of the space between the two limiting ribs is equal to the width of the plate pair to be detected, and the test holes are located between the two limiting ribs.
Preferably, the number of the hydraulic cylinders is two.
Preferably, the water tank comprises a water tank and a water tank box, wherein the water tank box is positioned above the water tank and is in sealed connection with the water tank.
Preferably, the number of the test holes is the same as the number of the flow channel holes in the plate pair, and the number of the vent holes is one less than the number of the test holes.
The invention also provides a detection method of the semi-welded plate heat exchanger plate pair based on the detection device of the semi-welded plate heat exchanger plate pair, which is characterized in that a conical screw in the expansion block is screwed to enable the expansion block to tightly support the first sealing ring; then placing a third sealing ring on each vent hole to enable the third sealing ring to be coaxial with the corresponding vent hole, then placing a plate pair to be detected above a lower pressure plate, enabling the bottom surface of the plate pair to be detected to be attached to the top surfaces of the first sealing ring and the third sealing ring, then placing a second sealing ring on the top surface of the plate pair to be detected to enable the second sealing ring to be coaxial with the corresponding vent hole, then starting a hydraulic cylinder, and driving the upper pressure plate to rotate by the hydraulic cylinder to enable the upper pressure plate to tightly press the plate pair to be detected; then filling water into the water tank to enable the water level to be higher than the top surface of the upper pressure plate; and then inflating the plate pairs to be detected through the inflation tubes, and observing whether bubbles emerge from water.
Compared with the prior art, the invention has the following technical effects:
the detection device and the detection method for the plate pairs of the semi-welded plate heat exchanger have the advantages of simple structure and convenience in use, and can directly observe whether the plate pairs of the semi-welded plate heat exchanger have quality problems or not.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a detection device for plate pairs of a half-welded plate heat exchanger according to the present invention;
FIG. 2 is a schematic structural diagram of an opening and closing mechanism in the detection device for plate pairs of a half-welded plate heat exchanger according to the present invention;
FIG. 3 is a schematic structural diagram of a first positioning stop block in the detection device for plate pairs of a half-welded plate heat exchanger according to the present invention;
FIG. 4 is a schematic structural diagram of a lower pressure plate in the detection device for plate pairs of a half-welded plate heat exchanger according to the present invention;
FIG. 5 is a schematic cross-sectional view A-A of FIG. 4;
FIG. 6 is a first schematic structural diagram of a expanding block in the detection device for plate pairs of a half-welded plate heat exchanger according to the present invention;
FIG. 7 is a second schematic structural diagram of a expanding block in the detection device for plate pairs of a half-welded plate heat exchanger according to the present invention;
FIG. 8 is a schematic cross-sectional view B-B of FIG. 7;
wherein: 1-supporting table, 2-water tank, 3-water tank box, 4-first positioning stop block, 5-lower pressing plate, 501-limiting rib, 502-air blocking hole, 503-air vent, 504-air inflation tube, 6-first sealing ring, 7-expanding block, 701-conical screw, 702-first base body, 703-second base body, 704-guide rod, 705-screw, 706-spring, 8-second sealing ring, 9-upper pressing plate, 10-pin, 11-hydraulic cylinder, 12-opening and closing mechanism, 13-plate pair to be detected, 14-vertical frame, 15-second positioning stop block, 16-lower end hinge, 17-pin shaft and 18-upper end hinge.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The invention aims to provide a device and a method for detecting a half-welded plate type heat exchanger plate pair, which are used for solving the problems in the prior art and are convenient to detect the half-welded plate type heat exchanger plate pair.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 8: this embodiment provides a detection apparatus that half formula plate heat exchanger slab of welding is right, including a supporting bench 1, be provided with grudging post 14 and open-top water tank on a supporting bench 1's the top surface, grudging post 14 is located one side of water tank, and the water tank includes basin 2 and basin case 3, and basin case 3 is located the top of basin 2 and basin case 3 and 2 sealing connection in basin.
A lower pressing plate 5 and two positioning stop blocks are fixedly arranged on the top surface of the water tank 2, test holes which correspond to flow channel holes in the plate pairs 13 to be detected one by one are formed in the lower pressing plate 5, each test hole comprises a gas blocking hole 502 and three vent holes 503, a supporting and expanding block 7 is arranged in each gas blocking hole 502, a first sealing ring 6 is sleeved above each supporting and expanding block 7, the diameter of each supporting and expanding block 7 can be increased so as to tightly support the first sealing ring 6, and each vent hole 503 is communicated with the side wall of the lower pressing plate 5 through an inflation tube 504; in practical applications, only one air blocking hole 502 is provided, the number of the vent holes 503 depends on the number of the flow passage holes, and the specific number of the vent holes 503 is one less than the number of the test holes.
Referring to fig. 6 to 8, the expanding block 7 includes a first base 702 and a second base 703 mounted on the base, two guide rods 704 respectively penetrate through two holes of the first base 702 and the second base 703, it is noted that the two guide rods 704 both penetrate through the first base 702 and the second base 703, and the two holes of the first base 702 and the two holes of the second base 703 correspond to each other one by one; two ends of a guide rod 704 are fixedly connected with a first base body 702 and a second base body 703 through screws 705 respectively, a spring 706 is sleeved on the guide rod 704, one end of the spring 706 abuts against the screws 705, the other end of the spring 706 abuts against a step in a hole of the base body, the step in the hole of the base body is in sliding fit with the guide rod 704, and a conical screw 701 is screwed in a threaded hole in the upper end of the base. The expanding process of the expanding block 7 is as follows: when the conical screw 701 is rotated, the tip of the conical screw 701 moves downward, and the first base 702 and the second base 703 are pressed to move outward along the guide rod 704, so that the first seal ring 6 is expanded to play a sealing role. Meanwhile, the guide rod 704 and the four springs 706 between the first base 702 and the second base 703 are in a compressed state, after the detection is finished, the conical screw 701 is reversely rotated, the head of the screw moves upwards, the first base 702 and the second base 703 move inwards under the action of the elastic force of the springs 706, and the first sealing ring 6 is not expanded.
Two parallel limiting ribs 501 are fixedly arranged on the top surface of the lower pressing plate 5, the plate pair 13 to be detected is located between the two limiting ribs 501, the width of the interval between the two limiting ribs 501 is equal to the width of the plate pair 13 to be detected, and the test hole is located between the two limiting ribs 501. Each vent hole 503 is provided with a third sealing ring, the third sealing ring is coaxial with the corresponding vent hole 503, the bottom surface of the first sealing ring 6 and the bottom surface of the third sealing ring are tightly attached to the top surface of the lower pressure plate 5, and the top surface of the first sealing ring 6 and the top surface of the third sealing ring are flush with the top surface of the limiting rib 501; and a second sealing ring 8 is arranged above each flow channel hole of the plate pair 13 to be detected, and the second sealing ring 8 is coaxial with the corresponding flow channel hole.
The two positioning stop blocks are respectively a first positioning stop block 4 and a second positioning stop block 15, the two positioning stop blocks are parallel to each other, and the lower pressing plate 5 is positioned between the two positioning stop blocks; the two positioning stop blocks comprise vertical parts and horizontal parts, the horizontal parts are fixedly connected with the bottom surface of the water tank through screws, the upper pressing plate 9 is hinged with the vertical parts of the second positioning stop blocks 15 through hinges, and the top surfaces of the two second positioning stop blocks 15 are flush with the top surfaces of the limiting ribs 501; the hinge comprises a lower end hinge 16 and an upper end hinge 18, and the lower end hinge 16 is rotatably connected with the upper end hinge 18 through a pin shaft 17.
The top surface of top board 9 is connected with the top of grudging post 14 through two pneumatic cylinders 11, and 11 one ends of pneumatic cylinders are connected with top board 9 rotation through round pin 10, and the other end rotates with grudging post 14 and is connected, wait to detect the slab pair 13 and place in the top of bottom board 5, and the runner hole is just to corresponding test hole, and pneumatic cylinder 11 can drive top board 9 will wait to detect the slab pair 13 and compress tightly.
In this embodiment, the third sealing ring has a thickness of 10mm, an inner diameter of 154mm, and an outer diameter of 168mm, the lower pressure plate 5 has a size of 1500mm × 500mm, the first sealing ring 6 has an inner diameter of 132mm, an outer diameter of 140mm, and a thickness of 20mm, the plate pair 13 to be detected has a size of 750mm × 250mm, and the second sealing ring 8 has a thickness of 2mm, an inner diameter of 154mm, and an outer diameter of 168 mm.
The embodiment also provides a detection method of the half-welded plate heat exchanger plate pair based on the detection device of the half-welded plate heat exchanger plate pair, which comprises the following steps: firstly, screwing a conical screw 701 in the expanding block 7 to enable the expanding block 7 to tightly support the first sealing ring 6; then, a third sealing ring is placed on each vent hole 503, so that the third sealing ring is coaxial with the corresponding vent hole 503, then a plate pair 13 to be detected is placed above the lower pressing plate 5, the bottom surface of the plate pair 13 to be detected is attached to the top surfaces of the first sealing ring 6 and the third sealing ring, then a second sealing ring 8 is placed on the top surface of the plate pair 13 to be detected, so that the second sealing ring 8 is coaxial with the corresponding vent hole 503, then the hydraulic cylinder 11 is started, the hydraulic cylinder 11 drives the upper pressing plate 9 to rotate, and the upper pressing plate 9 is enabled to tightly press the plate pair 13 to be detected; then the water tank is filled with water, so that the water level is higher than the top surface of the upper pressure plate 9; and then, inflating the plate pair 13 to be detected through each inflation tube 504, and observing whether bubbles emerge from the water.
In the description of the present invention, it should be noted that the terms "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. The utility model provides a detection apparatus that half welded plate heat exchanger slab is right which characterized in that: the water tank support device comprises a support table, wherein a vertical frame and a water tank with an opening at the top end are arranged on the top surface of the support table, and the vertical frame is positioned on one side of the water tank; the bottom surface of the water tank is fixedly provided with a lower pressing plate and a positioning stop block positioned on one side of the lower pressing plate, the lower pressing plate is provided with test holes corresponding to flow channel holes on a plate to be detected in a one-to-one mode, each test hole comprises a plugging hole and a plurality of vent holes, a supporting and expanding block is arranged in each plugging hole, a first sealing ring is sleeved above each supporting and expanding block, the diameter of each supporting and expanding block can be increased so as to tightly support the first sealing ring, and each vent hole is communicated with the side wall of the lower pressing plate through an inflation tube; one side of the upper pressure plate is hinged to the positioning stop block, the top surface of the upper pressure plate is connected with the top of the vertical frame through a hydraulic cylinder, one end of the hydraulic cylinder is rotatably connected with the upper pressure plate, the other end of the hydraulic cylinder is rotatably connected with the vertical frame, the plate pairs to be detected are placed above the lower pressure plate, the runner holes are opposite to the corresponding test holes, and the hydraulic cylinder can drive the upper pressure plate to compress the plate pairs to be detected.
2. The detection device for the plate pairs of the half-welded plate heat exchanger according to claim 1, wherein: two parallel limiting ribs are fixedly arranged on the top surface of the lower pressing plate, the plate sheet to be detected is positioned between the two limiting ribs, a third sealing ring is arranged on each vent hole, the third sealing ring is coaxial with the corresponding vent hole, the bottom surface of the first sealing ring and the bottom surface of the third sealing ring are tightly attached to the top surface of the lower pressing plate, and the top surfaces of the first sealing ring and the third sealing ring are flush with the top surfaces of the limiting ribs; and a second sealing ring is arranged above each flow channel hole of the plate pair to be detected, and the second sealing ring is coaxial with the corresponding flow channel hole.
3. The detection device for the plate pairs of the half-welded plate heat exchanger according to claim 2, wherein: the two positioning stop blocks are respectively a first positioning stop block and a second positioning stop block, the two positioning stop blocks are parallel to each other, and the lower pressing plate is positioned between the two positioning stop blocks; the two positioning check blocks comprise vertical portions and horizontal portions, the horizontal portions are fixedly connected with the bottom surface of the water tank through screws, the upper pressing plate is hinged to the vertical portions of the second positioning check blocks through hinges, and the top surfaces of the second positioning check blocks are flush with the top surfaces of the limiting ribs.
4. The detection device for the plate pairs of the half-welded plate heat exchanger according to claim 2, wherein: the width of the space between the two limiting ribs is equal to the width of the plate pair to be detected, and the test holes are located between the two limiting ribs.
5. The detection device for the plate pairs of the half-welded plate heat exchanger according to claim 1, wherein: the hydraulic cylinder is two.
6. The detection device for the plate pairs of the half-welded plate heat exchanger according to claim 1, wherein: the water tank comprises a water tank and a water tank box, wherein the water tank box is positioned above the water tank and is in sealed connection with the water tank.
7. The detection device for the plate pairs of the half-welded plate heat exchanger according to claim 1, wherein: the number of the test holes is the same as the number of the flow channel holes on the plate pair, and the number of the vent holes is one less than the number of the test holes.
8. A detection method for a half-welded plate heat exchanger plate pair based on the detection device for a half-welded plate heat exchanger plate pair of any one of claims 1 to 7, characterized by comprising the following steps: screwing a conical screw in the expansion block to enable the expansion block to tightly support the first sealing ring; then placing a third sealing ring on each vent hole to enable the third sealing ring to be coaxial with the corresponding vent hole, then placing a plate pair to be detected above a lower pressure plate, enabling the bottom surface of the plate pair to be detected to be attached to the top surfaces of the first sealing ring and the third sealing ring, then placing a second sealing ring on the top surface of the plate pair to be detected to enable the second sealing ring to be coaxial with the corresponding vent hole, then starting a hydraulic cylinder, and driving the upper pressure plate to rotate by the hydraulic cylinder to enable the upper pressure plate to tightly press the plate pair to be detected; then filling water into the water tank to enable the water level to be higher than the top surface of the upper pressure plate; and then inflating the plate pairs to be detected through the inflation tubes, and observing whether bubbles emerge from water.
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Cited By (1)
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| CN116718327A (en) * | 2023-08-11 | 2023-09-08 | 广州奥太制冷设备有限公司 | Leakage detection device for heat exchanger |
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| CN108318191A (en) * | 2018-02-27 | 2018-07-24 | 萝北奥星新材料有限公司 | A kind of suction type graphite heat exchanger detection method |
| CN209296256U (en) * | 2018-12-07 | 2019-08-23 | 无锡市锡惠化工节能设备有限公司 | A kind of plate-type heat exchanger slab air tightness detection apparatus |
| CN110006593A (en) * | 2019-04-04 | 2019-07-12 | 上海蓝滨石化设备有限责任公司 | A kind of dismountable plate type heat exchanger automatically suppresses equipment and hammering method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116718327A (en) * | 2023-08-11 | 2023-09-08 | 广州奥太制冷设备有限公司 | Leakage detection device for heat exchanger |
| CN116718327B (en) * | 2023-08-11 | 2023-12-12 | 广州奥太制冷设备有限公司 | Leakage detection device for heat exchanger |
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