Condenser pipe pressure blasting test bench and method based on heat exchanger production

Abstract

The invention relates to the technical field of condenser pipe pressure-resistant test equipment, and particularly discloses a condenser pipe pressure-resistant blasting test bed and method based on heat exchanger production, and the test bed comprises a first partition plate and a second partition plate which are fixedly arranged on the inner side wall of the test bed and are arranged in parallel up and down; the top of the first partition plate is provided with a test mechanism which extends to the top of the second partition plate and is arranged in a rectangular array, the outer wall of the test bench is provided with a cooling mechanism, and the test mechanism comprises a pressing mechanism which is arranged at the top of the second partition plate. And the end parts of the condensation pipes with different pipe diameters can be blocked, so that the stability of a subsequent pressure-resistant bursting test is improved, and the pressure sensor can enter different positions in the condensation pipe, so that whether the test of the condensation pipe is qualified or not can be mastered actually, and the practical test is convenient to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of condenser tube pressure test equipment, in particular to a condenser tube pressure and explosion test bench and method based on heat exchanger production. BACKGROUND

[0002] The condenser tube is an important component of the heat exchanger, which transmits high-temperature gas through the inner and outer double-layer tube structure, the inner tube, and the outer tube, which realizes heat dissipation through cooling water, conducts heat from the inner tube to the cooling medium, and finally realizes heat exchange. The condenser tube for heat exchanger needs to be subjected to pressure and explosion test during production to determine its stability in actual use. Some heat exchangers use titanium alloy material as the production material of the condenser tube to meet the actual requirements of corrosion resistance and high-temperature stability.

[0003] The composite tube online high-pressure pressure test machine with publication number CN218036088U discloses the problem in the background art: the problem of low installation efficiency of the composite tube during pressure test.

[0004] In summary, the existing technology has the following problems: The existing condenser tube for heat exchanger is usually subjected to pressure and explosion test on the inner tube to detect the stability of the inner tube in the flow of high-pressure fluid. However, due to the large number of inner tubes, usually multiple inner tubes are laid in one outer tube to increase the contact area between fluid and cooling medium. To meet the actual test requirements, multiple inner tubes need to be placed in the test bench for testing. The traditional installation and disassembly of inner tubes is cumbersome, affecting the test efficiency, and it is not convenient to monitor the pressure at different positions in the inner tube during the test, so as to actually grasp the test results. Referring to the above application file, it only clamps and fixes the two ends of the tube body, which has certain disadvantages. To solve the above problems, a condenser tube pressure and explosion test bench and method based on heat exchanger production are proposed. SUMMARY

[0005] To achieve the above purpose, the present application realizes the following technical scheme: a condenser tube pressure and explosion test bench based on heat exchanger production, comprising a test bench, a control console arranged on the outer side of the test bench, and a condenser tube for pressure and explosion test, further comprising a first partition plate and a second partition plate fixedly arranged on the inner side wall of the test bench and arranged in parallel from top to bottom, and a test mechanism arranged in a rectangular array on the top of the first partition plate and extending to the top of the second partition plate, a cooling mechanism arranged on the outer wall of the test bench, and the test mechanism comprising: The lower pressing mechanism is arranged on the top of the second partition plate and used for applying a lower pressing force to the condensing pipe from the top end of the condensing pipe to limit the condensing pipe. The top of the first partition plate and the two sides of the lower pressing mechanism are provided with connecting mechanisms for connecting the two ends of the condensing pipe. The lower pressing mechanism comprises: The cylinder is fixedly arranged on the top of the second partition plate. The inner side wall of the cylinder is sleeved with the first piston block and the second piston block arranged in parallel. The first piston block is arranged at the bottom of the second piston block to form a sealed space between the first piston block and the second piston block. The rod body is fixedly arranged on the top of the first piston block. The top of the rod body is provided with the lower pressing plate. The bottom of the lower pressing plate is provided with the lower pressing groove.

[0006] Further, the lower pressing mechanism further comprises: The first internal threaded pipe is sleeved on the top of the cylinder and extends into the cylinder. The outer side wall of the first internal threaded pipe is in dynamic sealing design with the top of the cylinder and is in sliding connection with the inner side wall of the cylinder. The bottom of the first internal threaded pipe is fixedly connected with the top of the second piston block. The external threaded pipe is in threaded connection with the inner wall of the first internal threaded pipe and is in rotary connection with the outer wall of the cylinder. The height of the second piston block is adjusted by cooperation of the first internal threaded pipe and the external threaded pipe. The inner wall of the external threaded pipe is sleeved on the side wall of the rod body.

[0007] Further, the lower pressing mechanism further comprises: The frame body is fixedly arranged on the bottom of the lower pressing plate and is in U-shaped design to form a space for mounting the condensing pipe between the inner side of the frame body and the bottom of the lower pressing plate. The top of the rod body is fixedly connected with the bottom of the frame body to apply a lower pressing force to the condensing pipe by the lower pressing plate driven by the first piston block. The connecting pipe is fixedly arranged on the outer wall of the cylinder between the first piston block and the second piston block. The connecting plate is fixedly arranged on the bottom of the first piston block and is symmetrically arranged with the center point of the first piston block. The sides of the connecting plates away from each other extend to the outside of the cylinder. The two sides of the cylinder are provided with through grooves for vertical movement of the connecting plates.

[0008] Further, the top inner wall of the lower pressing groove is in arc-shaped design to limit the top of the condensing pipe. The top of the rod body extends to the top of the cylinder. The bottom of the second piston block is provided with a first through hole for sleeving the rod body. The inner wall of the first through hole is in dynamic sealing design with the side wall of the rod body.

[0009] Further, the connecting mechanism comprises: The second cylinder is fixedly sleeved at the top of the second partition plate and penetrates the second partition plate, the top and bottom of the second cylinder are fixedly provided with a third cylinder and a first cylinder respectively, the interiors of the first cylinder, the second cylinder and the third cylinder are communicated, the bottom of the first cylinder is designed in a sealing mode, and the second cylinder is designed in a reverse circular table mode; The first limiting assembly is arranged in the second cylinder in a lifting mode to block the end of the condensing pipe from the inner wall of the condensing pipe, the top of the third cylinder is provided with a second limiting assembly, and the first limiting assembly comprises: The limiting column is arranged in the second cylinder in a lifting mode and designed in a circular table mode, and the bottom of the first cylinder is provided with an adjusting assembly for adjusting the height of the limiting column.

[0010] Further, the first limiting assembly further comprises: The mounting groove is formed in the inner lower end of the limiting column, mounting rods are fixedly arranged on the inner walls of the two sides of the mounting groove, a clock spring is arranged on the side wall of the mounting rod, a limiting sleeve is sleeved on the outer side of the clock spring, and the two ends of the clock spring are fixedly connected with the side wall of the mounting rod and the inner wall of the limiting sleeve respectively; A torque sensor is fixedly arranged on the side wall of the mounting rod and located at one side of the clock spring, and a monitoring end of the torque sensor is connected with the inner wall of the limiting sleeve; A pull rope is wound on the outer wall of the limiting sleeve and fixedly connected with the outer wall of the limiting sleeve at one end, an inner groove is formed in the top of the limiting column, a ball is sleeved on the inner wall of the inner groove, a pressure sensor is inlaid in the side wall of the ball, and the other end of the pull rope is fixedly connected with the ball; A Tesla valve is fixedly arranged in the interior of the limiting column, and the two ends of the Tesla valve extend into the inner groove and the mounting groove respectively, a guide plate is fixedly arranged on the inner side wall of the mounting groove and located at the top of the limiting sleeve, the guide plate is designed in an inclined mode, a pipe body extending out of the second cylinder is fixedly arranged on the inner side wall of the guide plate, the pipe body is designed in a telescopic flexible pipe mode, the pull rope penetrates the guide plate and extends to the top of the limiting column along the interior of the Tesla valve; A guide pipe is fixedly arranged on the side wall of the limiting column and extends into the inner groove at one end and extends out of the second cylinder at the other end.

[0011] Further, the second limiting assembly comprises: A fourth cylinder is sleeved on the inner wall of the third cylinder, the inner wall of the fourth cylinder is designed in an inclined mode, and the outer wall upper end, the outer wall lower end and the inner wall lower end of the fourth cylinder are fixedly sleeved with sealing rings; A sealing ring is fixedly arranged on the top of the fourth cylinder, the connection part between the sealing ring and the inner wall of the fourth cylinder is designed in a smooth mode, the outer wall diameter of the sealing ring is larger than the outer wall diameter of the fourth cylinder, and the outer wall of the sealing ring is fixedly connected with the connecting plate.

[0012] Further, the adjusting assembly comprises: The second internal thread pipe is arranged in the inner wall of the first cylinder body in a sliding mode and is fixedly connected with the bottom of the limiting column, the inner wall of the second internal thread pipe is threadedly connected with an external thread rod, the bottom of the external thread rod is rotationally connected with the top of the first partition plate, and the side wall of the external thread rod is rotationally connected with the bottom of the first cylinder body.

[0013] Further, the cooling mechanism comprises: The pump body is fixedly arranged on the outer wall of the test bench, the water inlet end of the pump body is fixedly provided with a first water delivery pipe extending into the test bench, and the water outlet end of the pump body is fixedly provided with a second water delivery pipe; The third water delivery pipe is fixedly arranged on the outer wall of the test bench and extends into the test bench, the second water delivery pipe and the third water delivery pipe are communicated, and one end of the third water delivery pipe and the first water delivery pipe in the test bench is located on the two sides of the test bench respectively.

[0014] The application further provides a use method of the condenser pipe pressure resistance explosion test bench based on heat exchanger production. S1: installing the condenser pipe for heat exchanger needing pressure resistance explosion in the test bench through the test mechanism; S2: after the installation of the condenser pipe, the pressure resistance explosion test of the condenser pipe is carried out through the cooperation of the cooling mechanism and the test mechanism.

[0015] The application provides a condenser pipe pressure resistance explosion test bench and method based on heat exchanger production. 1: the lower pressing mechanism and the connecting mechanism cooperate to fix the condenser pipes with different diameters, the end portions of the condenser pipes with different diameters can be blocked, the stability of the subsequent pressure resistance explosion test is improved, the pressure sensor can enter different positions in the condenser pipe, the test whether the condenser pipe is qualified can be actually mastered, and the actual test use is facilitated.

[0016] 2: the first piston block and the second piston block form a closed space in the cylinder body, the lower pressing plate is driven to apply a downward pressure to the condenser pipe through the pressure of the fluid itself, the condenser pipe can be fixed according to the pressure of the fluid required by the actual test, the stability of the fixation is improved, and the actual operation is facilitated.

[0017] By adjusting the size of the closed space between the first piston block and the second piston block, when the volume of the closed space is smaller, the downward pressure applied to the condenser pipe by the lower pressing plate is greater under the rated fluid pressure, the stability of the fixation of the condenser pipe is improved, and the application range is improved.

[0018] 3、The second cylinder and the limiting column cooperate, so as to limit the condensing pipe from the outer wall and the inner wall of the condensing pipe, and the limiting column and the second cylinder limit the condensing pipe from the inner wall and the outer wall of the condensing pipe respectively, in addition, the second limiting assembly limits the condensing pipe from different heights, improves the stability of the condensing pipe limiting, and improves the stability of the subsequent test.

[0019] 4、The second cylinder and the limiting column cooperate, so as to block the condensing pipe of different pipe diameters from the outer wall and the inner wall of the condensing pipe, and avoid fluid leakage during the test process, and cooperate with the adjusting assembly, so as to adjust the height of the limiting column, and further facilitate the use of different pipe diameters of the condensing pipe.

[0020] 5、The fluid drives the ball to move along the inner wall of the condensing pipe, so that the ball enters different positions in the condensing pipe, thereby facilitating the actual monitoring of the pressure of the fluid in the condensing pipe, and facilitating the detection of the pressure of the burst and hole position, facilitating the actual grasp of the test result, and cooperating with the torque sensor, facilitating the grasp of the approximate position of the ball, thereby facilitating the judgment of the burst position, facilitating the treatment of the fault condensing pipe after the test is completed. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the overall structure schematic diagram of the application; Figure 2 It is the left side structure schematic diagram of the test bench longitudinal section of the application; Figure 3 It is the right side structure schematic diagram of the test bench longitudinal section of the application; Figure 4 It is the structure schematic diagram of the first baffle, the second baffle, the condensing pipe and the test mechanism of the application; Figure 5 It is the structure schematic diagram of the test mechanism and the condensing pipe of the application; Figure 6 It is the longitudinal section structure schematic diagram of the lower pressing plate, the frame body, the first cylinder, the second cylinder and the third cylinder of the application; Figure 7 It is the structure schematic diagram of the condensing pipe and the connecting mechanism of the application; Figure 8 It is the longitudinal section structure schematic diagram of the first cylinder, the second cylinder and the third cylinder of the application; Figure 9 It is the structure schematic diagram of the second limiting assembly, the first limiting assembly and the condensing pipe of the application; Figure 10 It is the longitudinal section structure schematic diagram of the sealing ring, the fourth cylinder, the second cylinder and the third cylinder of the application; Figure 11Longitudinal section structure schematic view of third barrel, second barrel, condenser pipe and limiting column of the present application; Figure 12 Structure schematic view of mounting rod, limiting sleeve, spring, torque sensor, pull rope, ball and pressure sensor of the present application; Figure 13 Structure schematic view of the present application Figure 12 Enlargement structure schematic view of A in the present application; Figure 14 Structure schematic view of down-pressing mechanism of the present application; Figure 15 Structure schematic view of down-pressing plate, down-pressing groove and frame of the present application; Figure 16 Longitudinal section structure schematic view of second internally threaded pipe and externally threaded pipe of the present application.

[0022] Reference signs involved in the above-mentioned drawings: 1, test bench; 2, control console; 3, cooling mechanism; 4, second partition; 5, first partition; 6, test mechanism; 7, condenser pipe; 31, second water delivery pipe; 32, third water delivery pipe; 33, pump body; 34, first water delivery pipe; 61, down-pressing mechanism; 62, connecting mechanism; 611, down-pressing plate; 612, frame; 613, cylinder; 614, rod; 615, first internally threaded pipe; 616, connecting pipe; 617, connecting plate; 618, first piston block; 619, second piston block; 6191, down-pressing groove; 6192, externally threaded pipe; 621, third barrel; 622, second barrel; 623, first barrel; 624, second limiting assembly; 625, first limiting assembly; 626, adjusting assembly; 6241, sealing ring; 6242, fourth barrel; 6250, spring; 6251, limiting column; 6252, pipe body; 6253, flow guide plate; 6254, ball; 6255, Tesla valve; 6256, mounting groove; 6257, mounting rod; 6258, limiting sleeve; 6259, torque sensor; 62591, pull rope; 62592, pressure sensor; 62593, guide pipe; 6261, second internally threaded pipe; 6262, externally threaded rod. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0024] Embodiment one: please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , a condenser pressure resistance explosion test bench based on a heat exchanger production, comprising a test bench 1, a control console 2 arranged on the outer side of the test bench 1, and a condenser 7 for pressure resistance explosion test, the heat exchanger with the condenser 7 to be subjected to pressure resistance explosion is placed in the test bench 1, and the parameters such as water pressure during the test are easily mastered through the control console 2, so as to facilitate the actual test, the condenser 7 is a U-shaped condenser 7, which is prior art and will not be described here.

[0025] Further comprising a first partition plate 5 and a second partition plate 4 fixedly arranged on the inner side wall of the test bench 1 and arranged in parallel from top to bottom, and the top of the first partition plate 5 is provided with a test mechanism 6 extending to the top of the second partition plate 4 and arranged in a rectangular array, and the outer wall of the test bench 1 is provided with a cooling mechanism 3.

[0026] Please refer to Figure 5 and Figure 6 , the test mechanism 6 comprises: a pressing mechanism 61 arranged on the top of the second partition plate 4, for applying a pressing force to the condenser 7 from the middle of the top of the condenser 7, so as to limit the condenser 7, and the top of the first partition plate 5 and on both sides of the pressing mechanism 61 are provided with a connecting mechanism 62 for connecting both ends of the condenser 7.

[0027] Please refer to Figure 14 , Figure 15 and Figure 16 , the pressing mechanism 61 comprises: a cylinder body 613 fixedly arranged on the top of the second partition plate 4, a first piston block 618 and a second piston block 619 arranged in parallel from top to bottom are sleeved on the inner side wall of the cylinder body 613, and the first piston block 618 is located at the bottom of the second piston block 619, so that a sealed space is formed between the first piston block 618 and the second piston block 619; a rod body 614 fixedly arranged on the top of the first piston block 618, and a pressing plate 611 is arranged on the top of the rod body 614, and a pressing groove 6191 is formed in the bottom of the pressing plate 611.

[0028] The pressing mechanism 61 further comprises: The first internally threaded pipe 615 is sleeved on the top of the cylinder body 613 and extends into the cylinder body 613, the outer side wall of the first internally threaded pipe 615 is in dynamic sealing design with the top of the cylinder body 613 and is in sliding connection with the inner side wall of the cylinder body 613, and the bottom of the first internally threaded pipe 615 is fixedly connected with the top of the second piston block 619. The externally threaded pipe 6192 is threadedly connected to the inner wall of the first internally threaded pipe 615 and is in rotary connection with the outer wall of the cylinder body 613, so that the height of the second piston block 619 is adjusted by cooperation of the first internally threaded pipe 615 and the externally threaded pipe 6192, and the inner wall of the externally threaded pipe 6192 is sleeved on the side wall of the rod body 614.

[0029] The lower pressing mechanism 61 further comprises: The frame body 612 is fixedly arranged on the bottom of the lower pressing plate 611 and is in U-shaped design, so that a space for mounting the condenser pipe 7 is formed between the inner side of the frame body 612 and the bottom of the lower pressing plate 611, and the top of the rod body 614 is fixedly connected with the bottom of the frame body 612, so that the lower pressing plate 611 is driven by the first piston block 618 to apply a downward pressing force to the condenser pipe 7; The connecting pipe 616 is fixedly arranged on the outer wall of the cylinder body 613 and is located between the first piston block 618 and the second piston block 619. The connecting plate 617 is fixedly arranged on the bottom of the first piston block 618 and is symmetrically arranged with the center point of the first piston block 618, and the sides of the connecting plate 617 away from each other extend to the outside of the cylinder body 613, and the cylinder body 613 is provided with a through slot for vertical movement of the connecting plate 617 on both sides.

[0030] In specific implementation, the condenser pipe 7 to be tested is placed in the test table 1 along the space between the frame body 612 and the lower pressing plate 611, at this time, the top of the condenser pipe 7 is located on the bottom of the lower pressing plate 611, and the two sides of the condenser pipe 7 are located on the top of the connecting mechanism 62 and extend into the second cylinder body 622, then the downward pressing force is applied to the top of the condenser pipe 7 by the lower pressing mechanism 61, so that the condenser pipe 7 is fixed and the stability of the condenser pipe 7 in subsequent tests is improved.

[0031] After the two ends of the condenser tube 7 are located in the second cylinder body 622, the bottom of the condenser tube 7 is supported due to the inverted circular table design of the second cylinder body 622, then the pipe connected to the fluid is connected to the fluid pipeline to flow the fluid into the cylinder body 613 and the sealed space between the first piston block 618 and the second piston block 619, since the second piston block 619 is a stable structure, the water pressure in the sealed space becomes larger during the continuous inflow of the fluid, and the first piston block 618 is continuously extruded to drive the rod body 614, the frame body 612 and the lower pressing plate 611 to move downward to apply downward pressure to the top of the condenser tube 7 to cooperate with the second cylinder body 622 to fix the condenser tube 7, improve the stability of the condenser tube 7 test, and form a sealed space in the cylinder body 613 by the first piston block 618 and the second piston block 619, and the lower pressing plate 611 is driven by the pressure of the fluid itself to apply downward pressure to the condenser tube 7, so that the condenser tube 7 can be fixed according to the actual test required fluid pressure, improve the stability of the fixed, and facilitate the actual operation.

[0032] In order to improve the application range, so as to facilitate the use of condenser tube 7 with different test pressures, the first internal threaded pipe 615 is driven to move vertically by the external threaded pipe 6192, so as to drive the second piston block 619 to move vertically, so as to adjust the size of the sealed space between the first piston block 618 and the second piston block 619, when the volume of the sealed space is smaller, the extrusion force applied to the first piston block 618 is larger under the rated fluid pressure, so that the downward pressure applied to the condenser tube 7 by the lower pressing plate 611 is larger, the stability of the fixed condenser tube 7 is improved, and the actual operation is facilitated.

[0033] The connecting plate 617 is driven to move downward by the downward movement of the first piston block 618, so that the connecting plate 617 cooperates with the second limiting component 624 to block the top of the third cylinder body 621 and limit the condenser tube 7, and improve the stability of the fixed condenser tube 7.

[0034] The inner side wall of the cylinder body 613 is provided with a first sliding groove arranged in an annular array, and the first sliding block is arranged in the first sliding groove, and the first sliding block is fixedly connected with the outer wall of the first internal threaded pipe 615, so as to limit the first internal threaded pipe 615, so that the first internal threaded pipe 615 is driven to move vertically by the external threaded pipe 6192.

[0035] The top inner wall of the lower pressing groove 6191 is designed in an arc shape to limit the top of the condenser tube 7, and the top inner wall of the lower pressing groove 6191 is designed in an arc shape to fit the outer surface of the condenser tube 7, so as to extrude the condenser tube 7; The top of the rod body 614 extends to the top of the cylinder body 613, and the bottom of the second piston block 619 is provided with a first through hole for sleeving the rod body 614, and the inner wall of the first through hole is in dynamic sealing design with the side wall of the rod body 614.

[0036] Embodiment two: please refer to Figure 7 and Figure 8 The difference between the technical scheme of this embodiment and that of embodiment one is that the connecting mechanism 62 comprises: The second cylinder body 622 is fixedly sleeved at the top of the second partition plate 4 and penetrates the second partition plate 4, the top and the bottom of the second cylinder body 622 are fixedly provided with the third cylinder body 621 and the first cylinder body 623 respectively, the interiors of the first cylinder body 623, the second cylinder body 622 and the third cylinder body 621 are communicated, the bottom of the first cylinder body 623 is in sealed design, and the second cylinder body 622 is in inverted circular table design. The first limiting assembly 625 is arranged in the second cylinder body 622 in a lifting manner to block the end of the condenser pipe 7 from the inner wall of the condenser pipe 7, and the top of the third cylinder body 621 is provided with the second limiting assembly 624.

[0037] In specific implementation, by making the second cylinder body 622 in inverted circular table design, after the end of the condenser pipe 7 is inserted into the second cylinder body 622 along the third cylinder body 621, the end of the condenser pipe 7 is supported by the inner wall of the second cylinder body 622, thereby supporting the two ends of the condenser pipe 7, cooperating with the pressing mechanism 61 to fix the condenser pipe 7.

[0038] By making the second cylinder body 622 in inverted circular table design, the two ends of the condenser pipe 7 can be supported, and different pipe diameters of the condenser pipe 7 can be supported during vertical movement in the second cylinder body 622, improving applicability, cooperating with the first limiting assembly 625 to block the end of the condenser pipe 7 by the limiting column 6251, and facilitating the delivery of fluid into the condenser pipe 7, so as to facilitate the use of the condenser pipe 7 in pressure burst test. In addition, it is convenient for the pressure sensor 62592 to enter different positions in the condenser pipe 7, so as to facilitate the actual grasp of the test results of the condenser pipe 7. The first limiting assembly 625 and the second limiting assembly 624 cooperate to improve the stability of the fixation of the condenser pipe 7 and improve the stability of the blocking.

[0039] Please refer to Figure 9 , Figure 11 , Figure 12 and Figure 13 The first limiting assembly 625 comprises: The limiting column 6251 is arranged in the second cylinder body 622 in a lifting manner and is in circular table design, and the bottom of the first cylinder body 623 is provided with the adjusting assembly 626 for adjusting the height of the limiting column 6251.

[0040] The first limiting component 625 further comprises: A mounting groove 6256 is arranged at the inner lower end of the limiting column 6251, two inner walls of the mounting groove 6256 are fixedly provided with mounting rods 6257, a side wall of each mounting rod 6257 is provided with a spring 6250, an outer side of the spring 6250 is sleeved with a limiting sleeve 6258, and two ends of the spring 6250 are fixedly connected with the side wall of the mounting rod 6257 and the inner wall of the limiting sleeve 6258 respectively; A torque sensor 6259 is fixedly arranged on the side wall of the mounting rod 6257 and located at one side of the spring 6250, and a monitoring end of the torque sensor 6259 is connected with the inner wall of the limiting sleeve 6258; A pull rope 62591 is wound on the outer wall of the limiting sleeve 6258 and fixedly connected with the outer wall of the limiting sleeve 6258 at one end, an inner recess is arranged at the top of the limiting column 6251, an inner wall of the inner recess is sleeved with a ball 6254, a side wall of the ball 6254 is embedded with a pressure sensor 62592, and the other end of the pull rope 62591 is fixedly connected with the ball 6254; A Tesla valve 6255 is fixedly arranged in the limiting column 6251, and two ends of the Tesla valve 6255 extend into the inner recess and the mounting groove 6256 respectively, a guide plate 6253 is fixedly arranged on the inner side wall of the mounting groove 6256 and located at the top of the limiting sleeve 6258, the guide plate 6253 is designed to be inclined, a pipe body 6252 extending out of the second cylinder 622 is fixedly arranged on the inner side wall of the guide plate 6253, the pipe body 6252 is designed as an elastic hose, the pull rope 62591 penetrates through the guide plate 6253 and extends along the inside of the Tesla valve 6255 to the top of the limiting column 6251; A guide pipe 62593 is fixedly arranged on the side wall of the limiting column 6251, one end of the guide pipe 62593 extends into the inner recess, and the other end of the guide pipe 62593 extends out of the second cylinder 622.

[0041] In specific implementation, when the end of the condensing pipe 7 is inserted into the second cylinder 622 and abuts against the inner wall of the second cylinder 622, the height of the limiting column 6251 is adjusted by the adjusting assembly 626. Since the limiting column 6251 is designed in a circular truncated cone shape, in the process of continuous upward movement of the limiting column 6251, the limiting column 6251 is inserted into the condensing pipe 7 and abuts against the inner wall of the condensing pipe 7, so as to block the condensing pipe 7, avoid fluid leakage in the process of the test, and improve the stability of the limiting of the condensing pipe 7 by limiting the condensing pipe 7 from the inner wall and the outer wall respectively. By cooperating with the downward pressing mechanism 61, the condensing pipe 7 is fixed. After the fixing is completed, the fluid is transported through the conduit 62593, enters the condensing pipe 7 through the conduit 62593 and the inner recess, and drives the ball 6254 to move along the inner wall of the condensing pipe 7 in the process of entering the condensing pipe 7, so as to enable the pressure sensor 62592 to perform pressure test at different positions in the condensing pipe 7. When the condensing pipe 7 leaks or bursts, the fluid in the condensing pipe 7 leaks, the information monitored by the pressure sensor 62592 is abnormal, so as to facilitate actual judgment. When the outer wall of the condensing pipe 7 has a hole and causes fluid leakage, the fluid in the condensing pipe 7 flows to the hole, and the ball 6254 moves to the hole along with the water flow, so as to facilitate monitoring of the pressure in the condensing pipe 7 and grasping of the size of the pressure at the leakage position.

[0042] The ball 6254 is pulled by the pull rope 62591, so as to enter different positions in the condensing pipe 7, thereby facilitating actual monitoring of the pressure of the fluid in the condensing pipe 7, and facilitating detection of the pressure at the bursting position and the hole position when the condensing pipe 7 bursts or has a hole, thereby facilitating actual grasping of the test result. In cooperation with the torque sensor 6259, the ball 6254 is driven to move by the fluid to generate a torque change overcoming the torsion of the spiral spring 6250, so as to facilitate grasping of the approximate position of the ball 6254, thereby facilitating judgment of the bursting position and facilitating processing of the condensing pipe 7 with fault after the test is completed.

[0043] The flow direction of the fluid entering the installation groove 6256 is limited by the Tesla valve 6255, so as to improve the stability of the fluid entering the condensing pipe 7 and avoid affecting the actual test. Due to the structural characteristics of the Tesla valve 6255, the fluid flows along the Tesla valve 6255 in a forward direction, that is, in the present application, the fluid flows from the bottom to the top of the Tesla valve 6255 approximately in a vertical line, so as to ensure normal traction of the pull rope 62591 and limit the reverse flow of the fluid. Part of the fluid entering the installation groove 6256 along the Tesla valve 6255 is discharged through the flow guide plate 6253 and the pipe body 6252.

[0044] Please refer to Figure 8 and Figure 9The adjusting assembly 626 comprises: The second inner threaded pipe 6261 is slidably arranged on the inner wall of the first cylinder body 623 and is fixedly connected with the bottom of the limiting column 6251. The inner wall of the second inner threaded pipe 6261 is threadedly connected with the external threaded rod 6262. The bottom of the external threaded rod 6262 is rotatably connected with the top of the first partition plate 5, and the side wall of the external threaded rod 6262 is rotatably connected with the bottom of the first cylinder body 623.

[0045] In specific implementation, the second inner threaded pipe 6261 is vertically moved by the external threaded rod 6262, so that the height of the limiting column 6251 is adjusted, so that the limiting column 6251 can block the end of the condenser pipe 7 when the condenser pipe 7 is inserted into the second cylinder body 622 at different heights, and the device is suitable for condenser pipes 7 of different diameters.

[0046] Referring to Figure 9 and Figure 10 The second limiting assembly 624 comprises: The fourth cylinder body 6242 is sleeved on the inner wall of the third cylinder body 621. The inner wall of the fourth cylinder body 6242 is designed to be inclined. The outer wall upper end, the outer wall lower end and the inner wall lower end of the fourth cylinder body 6242 are all fixedly sleeved with sealing rings. The sealing ring 6241 is fixedly arranged on the top of the fourth cylinder body 6242. The connection between the sealing ring 6241 and the inner wall of the fourth cylinder body 6242 is designed to be smooth. The outer wall diameter of the sealing ring 6241 is larger than the outer wall diameter of the fourth cylinder body 6242. The outer wall of the sealing ring 6241 is fixedly connected with the connecting plate 617.

[0047] In specific implementation, when the first piston block 618 moves downward, the sealing ring 6241 and the fourth cylinder body 6242 are driven to move downward, so as to block the space between the third cylinder body 621, the second cylinder body 622 and the outer wall of the condenser pipe 7, thereby achieving multi-point limiting of the condenser pipe 7 along the height direction of the condenser pipe 7 and improving the stability.

[0048] Referring to Figure 2 and Figure 3 The cooling mechanism 3 comprises: The pump body 33 is fixedly arranged on the outer wall of the test bench 1. The water inlet end of the pump body 33 is fixedly provided with the first water delivery pipe 34 extending into the test bench 1. The water outlet end of the pump body 33 is fixedly provided with the second water delivery pipe 31. The third water delivery pipe 32 is fixedly arranged on the outer wall of the test bench 1 and extends into the test bench 1. The second water delivery pipe 31 and the third water delivery pipe 32 are communicated. The one ends of the third water delivery pipe 32 and the first water delivery pipe 34 located in the test bench 1 are respectively located on the two sides of the inside of the test bench 1.

[0049] In the specific implementation, the third water conveying pipe 32 is connected with the cooling medium pipeline, so that the cooling medium enters the test bench 1. After the cooling medium circulates in the test bench 1, the third water conveying pipe 32 is closed, the second water conveying pipe 31 is opened, and the pump body 33 is started, so that the cooling medium circulates in the third water conveying pipe 32, the second water conveying pipe 31, the first water conveying pipe 34, the pump body 33 and the test bench 1, thereby the pressure explosion test of the condenser pipe 7 is carried out.

[0050] The external thread rod 6262 and the external thread pipe 6192 can be connected by gears and chains for synchronous adjustment of the plurality of test mechanisms 6, which is the prior art and is not shown in the figure.

[0051] The embodiment of the present application also provides a use method of the condenser pipe 7 pressure explosion test bench 1 based on heat exchanger production. The method comprises the following steps: S1: opening the top cover of the test bench 1, placing the heat exchanger condenser pipe 7 to be tested in the test bench 1 along the space between the frame 612 and the lower pressing plate 611, placing the two ends of the heat exchanger condenser pipe 7 on the top of the connecting mechanism 62 on both sides of the cylinder body 613, connecting and plugging the two ends of the condenser pipe 7 through the connecting mechanism 62, avoiding the leakage of the fluid after the fluid is delivered into the condenser pipe 7 through the conduit 62593, thereby facilitating the subsequent pressure explosion test, and connecting the two ends of the condenser pipe 7, and then applying a downward pressure to the top of the condenser pipe 7 through the lower pressing mechanism 61, so as to install the heat exchanger condenser pipe 7 to be tested in the test bench 1 through the cooperation of the lower pressing mechanism 61 and the connecting mechanism 62 of the test mechanism 6; S2: after the installation of the condenser pipe 7, closing the cover plate, delivering the fluid into the condenser pipe 7 while circulating the cooling medium in the test bench 1 through the cooperation of the cooling mechanism 3 and the test mechanism 6, thereby simulating the actual working environment of the condenser pipe 7 and performing the pressure explosion test on the condenser pipe 7. During the test, if the condenser pipe 7 breaks or explodes, the information monitored by the pressure sensor 62592 changes, and the abnormal situation is easily mastered through the control panel 2, and the pressure information of the delivered fluid and the circulating cooling medium is easily mastered, thereby facilitating the actual test.

[0052] Meanwhile, the contents not described in detail in the specification all belong to the prior art known to those skilled in the art.

[0053] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it should be taken in its broadest possible sense. For example, the terms "a", "an", and "the" include both singular and plural referents unless the context clearly dictates otherwise. The terms "comprises", "comprising", "includes", "including" and the like can be used in conjunction with the term "consisting of to include the elements or steps listed after such conjunctive language, but not to the exclusion of other elements or steps. The singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

[0054] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, many modifications, changes and substitutions are intended to fall within the scope of the present application, which is limited only by the scope of the claims hereinafter appended.

Claims

1. A pressure burst test bench for condenser tubes manufactured based on heat exchangers, comprising a test bench, a control console disposed outside the test bench, and condenser tubes for pressure burst testing, characterized in that, It also includes a first partition and a second partition fixedly installed on the inner wall of the test bench and arranged vertically in parallel. The top of the first partition is provided with a test mechanism extending to the top of the second partition and arranged in a rectangular array. The outer wall of the test bench is provided with a cooling mechanism. The test mechanism includes: A downward pressure mechanism, located at the top of the second partition, applies downward pressure from the middle of the top of the condenser tube to limit its movement. Connecting mechanisms are provided on both sides of the top of the first partition and on both sides of the downward pressure mechanism to connect the two ends of the condenser tube. The downward pressure mechanism includes: The cylinder body is fixedly mounted on the top of the second partition plate. The inner side wall of the cylinder body is fitted with a first piston block and a second piston block arranged in parallel vertically, and the first piston block is located at the bottom of the second piston block so that a sealed space is formed between the first piston block and the second piston block. The rod is fixedly mounted on the top of the first piston block. A pressure plate is provided on the top of the rod, and a pressure groove is provided at the bottom of the pressure plate.

2. The pressure burst resistance test bench for condenser tubes based on heat exchanger manufacturing according to claim 1, characterized in that, The pressing mechanism also includes: The first internal threaded tube is sleeved on the top of the cylinder and extends into the cylinder body. The outer wall of the first internal threaded tube is dynamically sealed to the top of the cylinder body and is slidably connected to the inner wall of the cylinder body. The bottom of the first internal threaded tube is fixedly connected to the top of the second piston block. The externally threaded tube is threaded to the inner wall of the first internally threaded tube and rotatably connected to the outer wall of the cylinder body. The height of the second piston block is adjusted by the cooperation of the first internally threaded tube and the externally threaded tube. The inner wall of the externally threaded tube is sleeved on the side wall of the rod body.

3. The pressure burst resistance test bench for condenser tubes based on heat exchanger manufacturing according to claim 2, characterized in that, The pressing mechanism also includes: The frame is fixed to the bottom of the lower pressure plate and has a U-shaped design so that a space for installing the condenser tube is formed between the inner side of the frame and the bottom of the lower pressure plate. The top of the rod is fixedly connected to the bottom of the frame so that the lower pressure plate is driven by the first piston block to apply downward pressure to the condenser tube. The connecting pipe is fixedly installed on the outer wall of the cylinder body and located between the first piston block and the second piston block; The connecting plates are fixedly installed at the bottom of the first piston block and are symmetrically arranged with respect to the center point of the first piston block. The sides of the connecting plates that are far apart from each other extend out of the cylinder body. The cylinder body has through slots on both sides for the connecting plates to move vertically.

4. The pressure burst resistance test bench for condenser tubes based on heat exchanger manufacturing according to claim 3, characterized in that, The top inner wall of the pressure groove is arc-shaped to limit the top of the condenser tube; The top of the rod extends to the top of the cylinder, and the bottom of the second piston block has a first through hole for fitting the rod. The inner wall of the first through hole and the side wall of the rod are designed to be dynamically sealed.

5. The pressure burst resistance test bench for condenser tubes based on heat exchanger manufacturing according to claim 3, characterized in that, The connecting mechanism includes: The second cylinder is fixedly sleeved on the top of the second partition and penetrates the second partition. The top and bottom of the second cylinder are respectively fixedly provided with the third cylinder and the first cylinder. The interiors of the first cylinder, the second cylinder and the third cylinder are all connected. The bottom of the first cylinder is sealed. The second cylinder is designed as an inverted frustum. A first limiting component is vertically mounted inside the second cylinder to seal the end of the condenser tube from the inner wall of the condenser tube. A second limiting component is mounted on the top of the third cylinder. The first limiting component includes: The limiting post is installed in the second cylinder in a lifting manner and is designed in the shape of a frustum. The bottom of the first cylinder is provided with an adjustment component for adjusting the height of the limiting post.

6. The pressure burst resistance test bench for condenser tubes based on heat exchanger manufacturing according to claim 5, characterized in that, The first limiting component also includes: The mounting groove is located at the lower end of the inner side of the limiting post. Mounting rods are fixedly installed on the inner walls of both sides of the mounting groove. A spring is installed on the side wall of the mounting rod. A limiting sleeve is fitted on the outer side of the spring. The two ends of the spring are fixedly connected to the side wall of the mounting rod and the inner wall of the limiting sleeve, respectively. The torque sensor is fixedly mounted on the side wall of the mounting rod and located on one side of the mainspring. The monitoring end of the torque sensor is connected to the inner wall of the limiting sleeve. A pull rope is wound around the outer wall of the limiting sleeve, and one end of the rope is fixedly connected to the outer wall of the limiting sleeve. The top of the limiting post has an inner groove, and a ball is fitted on the inner wall of the inner groove. A pressure sensor is embedded in the side wall of the ball. The other end of the pull rope is fixedly connected to the ball. The Tesla valve is fixed inside the limiting post, and both ends of the Tesla valve extend into the inner groove and the mounting groove respectively. The inner side wall of the mounting groove and the top of the limiting sleeve are fixedly provided with a guide plate. The guide plate is inclined. The inner side wall of the guide plate is fixedly provided with a tube extending to the outside of the second cylinder. The tube adopts a telescopic hose design. The pull rope passes through the guide plate and extends along the inside of the Tesla valve to the top of the limiting post. The catheter is fixed to the side wall of the limiting post, with one end of the catheter extending into the inner groove and the other end extending out of the second cylinder.

7. The pressure burst resistance test bench for condenser tubes based on heat exchanger manufacturing according to claim 5, characterized in that, The second limiting component includes: The fourth cylinder is fitted inside the third cylinder. The inner wall of the fourth cylinder is inclined. Sealing rings are fixedly fitted on the upper end of the outer wall, the lower end of the outer wall, and the lower end of the inner wall of the fourth cylinder. The sealing ring is fixedly installed on the top of the fourth cylinder. The connection between the sealing ring and the inner wall of the fourth cylinder is smoothly designed. The outer diameter of the sealing ring is larger than the outer diameter of the fourth cylinder. The outer wall of the sealing ring is fixedly connected to the connecting plate.

8. The pressure burst test bench for condenser tubes based on heat exchanger manufacturing according to claim 6, characterized in that, The adjustment component includes: The second internally threaded tube is slidably disposed on the inner wall of the first cylinder and fixedly connected to the bottom of the limiting post. The inner wall of the second internally threaded tube is threadedly connected to an externally threaded rod. The bottom of the externally threaded rod is rotatably connected to the top of the first partition plate, and the side wall of the externally threaded rod is rotatably connected to the bottom of the first cylinder.

9. The pressure burst test bench for condenser tubes based on heat exchanger manufacturing according to claim 1, characterized in that, The cooling mechanism includes: The pump body is fixedly installed on the outer wall of the test bench. The water inlet end of the pump body is fixedly provided with a first water supply pipe extending into the test bench, and the water outlet end of the pump body is fixedly provided with a second water supply pipe. The third water supply pipe is fixed on the outer wall of the test bench and extends into the test bench. The second and third water supply pipes are connected. The ends of the third and first water supply pipes located inside the test bench are respectively located on both sides of the test bench.

10. A method for using a pressure burst test bench for condenser tubes manufactured based on heat exchangers, characterized in that, Using the condenser tube pressure burst test bench based on heat exchanger manufacturing as described in any one of claims 1-9, the method includes the following steps: S1: The heat exchanger that needs to withstand pressure burst is installed in the test bench using condenser tubes through the test mechanism; S2: After the condenser tube is installed, a pressure burst test is conducted on the condenser tube through the cooperation of the cooling mechanism and the testing mechanism.

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