Performance test platform for cylindrical liquid heater

Abstract

The invention relates to the technical field of heater performance testing, in particular to a barrel type liquid heater performance testing platform. Comprising a test bench and two arc-shaped plates which are symmetrically and fixedly connected on the test bench. Two joint gaps for a liquid heater joint to move are formed between the two arc-shaped plates; the inner sides of the two arc-shaped plates are matched with the outer wall of the liquid heater; the upper surface of the test bench is fixedly connected with a transverse cylinder through a vertical cylinder. An output shaft of the transverse cylinder is fixedly connected with a sealing joint with a hose; a gap block is connected in the joint gap in an up-down sliding manner; placing seats fixedly connected with the gap blocks are connected to the inner sides of the two arc-shaped plates in an up-down sliding manner. In the process that the liquid heater moves downwards along with the placing seat to be loaded, liquid in the liquid storage barrel enters the liquid heater along the lower liquid hole and the upper liquid hole, so that the liquid in the liquid heater is preloaded while the liquid heater moves downwards to be loaded and buffered, and then the testing efficiency of the subsequent liquid heater is improved.

Description

Technical Field

[0001] This invention relates to the field of heater performance testing technology, specifically a cylindrical liquid heater performance testing platform. Background Technology

[0002] A liquid heater is a device that heats a liquid to a specific temperature. It plays a crucial role in various fields, providing a reliable and effective solution for liquid heating. For example, CN118129326B, entitled "Prior Art of a Liquid Heater," describes a liquid heater whose main working principle is as follows: the liquid enters the container tube through the inlet pipe and flows from top to bottom through a straight pipe inside the container tube. After reaching the bottom of the container tube, the liquid flows from bottom to top through the gap between the outer wall of the straight pipe and the inner wall of the container tube. A heating wire inside the container tube heats the liquid, causing it to flow out through the outlet pipe after being heated.

[0003] Therefore, the heating effect of a liquid heater is the main performance metric for a liquid heater. Thus, after the liquid heater is assembled, a performance testing platform is needed to test its heating performance. After the liquid heater is placed on the performance testing platform, the platform will inject liquid into the liquid heater through one of the sealed joints to be heated. The heated liquid will then flow out through the other sealed joint. The performance testing platform will detect the temperature of the liquid output from the liquid heater to determine its heating performance.

[0004] Before testing the performance of a liquid heater, in order to avoid situations such as dry burning, the liquid heater must be filled with liquid before the performance test can be carried out. For some large liquid heaters with a large internal space, filling the liquid heater with liquid is a slow waiting process, which undoubtedly results in low efficiency of liquid heater performance testing. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention proposes a cylindrical liquid heater performance testing platform. During the loading process of the liquid heater as the placement seat moves downwards, the liquid in the storage tank enters the interior of the liquid heater along the lower and upper liquid holes. This allows for pre-loading of the liquid inside the liquid heater while it is being loaded and buffered downwards, thereby improving the efficiency of subsequent liquid heater testing.

[0006] The technical solution adopted by this invention to solve its technical problem is as follows: A cylindrical liquid heater performance testing platform of this invention includes a test platform and two arc-shaped plates symmetrically and fixedly connected on the test platform; two joint gaps are formed between the two arc-shaped plates for the liquid heater connector to move; the inner sides of the two arc-shaped plates are adapted to the outer wall of the liquid heater; a horizontal cylinder is fixedly connected to the upper surface of the test platform via a vertical cylinder; a sealing connector with a flexible hose is fixedly connected to the output shaft of the horizontal cylinder; a gap block is slidably connected up and down within the joint gap; a placement seat fixedly connected to the gap block is slidably connected up and down within the inner sides of the two arc-shaped plates; a liquid inlet hole is provided through the center of the upper surface of the placement seat; a liquid storage tank is provided inside the test platform; a piston is slidably and sealingly connected to the inner wall of the liquid storage tank; the lower surface of the piston is connected to the bottom wall of the liquid storage tank via a first spring; a central rod is fixedly connected to the upper surface of the piston; one end of the central rod passes through the test platform and is fixedly connected to the lower surface of the placement seat; the central rod is movably and sealingly connected to the test platform; the liquid inlet hole and the lower surface of the piston are connected via a liquid outlet hole.

[0007] Preferably, the arc-shaped plate is arched at its upper end; the upper surface of the placement seat has a placement groove that is concentric with and communicates with the liquid inlet hole; the depth of the placement groove increases as it approaches the liquid inlet hole; the piston divides the interior of the storage tank into an upper chamber and a lower chamber; the upper chamber communicates with the outside of the storage tank.

[0008] Preferably, the gap block has a rotating groove on its outer wall away from the placement seat; a handle is rotatably and sealed within the rotating groove; a groove is provided on the side of the gap block that contacts the arc plate; the bottom of the groove and the wall of the rotating groove are connected through a first liquid hole; a locking block is slidably and sealed within the groove; a guide surface is provided on the end of the locking block that is away from the first liquid hole and tilted downwards; a locking groove is provided on the arc plate and the groove on the gap block at a corresponding position; the locking block can extend into the locking groove; a temporary storage groove is provided on the end of the handle away from the gap block; a temporary storage block is slidably and sealed within the temporary storage groove; the temporary storage block and the bottom of the temporary storage groove are connected by a tension spring; the outer wall of the handle located in the rotating groove is connected to the bottom of the temporary storage groove through a second liquid hole; the second liquid hole is connected to or offset from the first liquid hole after the handle is rotated; the temporary storage groove is filled with a liquid medium.

[0009] Preferably, the inner wall of the rotating groove is provided with an arc-shaped positioning groove; a positioning block is slidably connected in the positioning groove; and the positioning block is fixedly connected to the outer wall of the handle.

[0010] Preferably, the inner wall of the liquid inlet is provided with an annular groove; an annular bladder is fixedly connected inside the annular groove; a drive groove is provided inside the placement seat; a drive plate is slidably and sealingly connected to the drive groove along the radial direction of the placement seat; the side of the drive plate near the liquid inlet is connected to the wall of the drive groove by a second spring; the wall of the drive groove near the liquid inlet is connected to the wall of the annular groove by a third liquid hole; a vertical groove is provided vertically on the inner wall of the arc-shaped plate; a gradient groove with decreasing depth from top to bottom is provided at the bottom of the vertical groove near the upper end; a drive block is fixedly connected to the end of the drive plate away from the second spring; the end of the drive block away from the second spring extends through the placement seat into the vertical groove; the drive block is movably connected to the placement seat.

[0011] Preferably, the annular bladder has an inverted Y-shaped cross-section and is a body of revolution; the annular bladder is made of an elastic material, such as rubber.

[0012] Preferably, the test bench has a liquid chamber inside; the upper port of the liquid storage tank is fixedly connected to the upper inner wall of the liquid chamber via an upper block; the liquid storage tank is composed of a sleeve-shaped tank body and a disc-shaped base; a first water-permeable groove is radially provided through the inner and outer walls of the tank body; an annular shielding groove is provided through the lower end face of the tank body; the shielding groove passes through the first water-permeable groove; a shielding sleeve is slidably and sealingly connected inside the shielding groove; a second water-permeable groove is radially provided through the inner and outer walls of the shielding sleeve; the lower end of the shielding sleeve is fixedly connected to the upper surface of the base; a third spring connects the recessed position of the lower surface of the base to the lower inner wall of the liquid chamber; the piston is movably and sealingly connected to the inner wall of the tank body; the lower end of the first spring is fixedly connected to the upper surface of the base.

[0013] Preferably, the liquid level in the liquid cavity is higher than the upper port of the storage tank in the vertical direction.

[0014] Preferably, the first and second permeable troughs are oriented in the same direction; the outer wall of the test platform is provided with a first connector and a second connector that communicate with the liquid chamber; the liquid inlet direction of the first connector is oriented towards the first permeable trough.

[0015] The beneficial effects of this invention are as follows: 1. During the loading process of the liquid heater as the placement seat moves downward, the liquid in the storage tank enters the interior of the liquid heater through the lower liquid hole and the upper liquid hole. This allows for the pre-loading of the liquid inside the liquid heater while the liquid heater is being loaded downward, thereby improving the testing efficiency of the liquid heater in the future.

[0016] 2. The present invention can lock the placement seat after it is moved to the upper limit position, so that the liquid heater can be installed and removed when the placement seat is in a stable position, which facilitates the operation and use of the test personnel during the test process.

[0017] 3. In this invention, the medium in the driving tank enters the annular groove along the third liquid hole, causing the annular bladder in the annular groove to bulge inward and press against the outer wall of the drain connector, thus sealing the inner wall of the upper liquid hole and the outer wall of the drain connector. This prevents leakage between the upper liquid hole and the drain connector during the liquid heater test, making the liquid heater test more stable. In addition, since the rotation section of the annular bladder is inverted Y-shaped, the outer wall of the drain connector of the liquid heater is difficult to pull out under the pressure of the annular bladder, making the liquid heater more stable on the placement seat, and further improving the test stability of the liquid heater.

[0018] 4. When the placement seat is moved to its extreme position, the lower cavity is exposed and connected to the liquid in the liquid cavity. The flowing liquid entering from the first connector will pass through the first permeable groove and the second permeable groove, and finally flow out along the second connector, thereby replacing the used liquid in the lower cavity. This keeps the liquid in the lower cavity at a low temperature, preventing high-temperature liquid from entering the next liquid heater and causing detection errors, thus improving the testing accuracy of the liquid heater. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a perspective view of the present invention; Figure 2 yes Figure 1 A sectional view; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a perspective view of the liquid storage tank and the placement base in this invention; Figure 5 This is a diagram showing the position of the positioning groove in this invention; Figure 6 This is a cross-sectional view of the placement seat and the gap block in this invention; Figure 7 yes Figure 6 Enlarged view of point B in the middle.

[0021] In the diagram: Test stand 1, vertical cylinder 11, horizontal cylinder 12, sealing joint 13, liquid chamber 14, first joint 15, second joint 16, arc plate 2, joint gap 21, slot 22, vertical groove 23, gradient groove 24, gap block 3, rotating groove 31, groove 32, first liquid hole 33, locking block 34, guide surface 341, positioning groove 35, positioning block 36, placement seat 4, liquid inlet hole 41, placement groove 42, annular groove 43, annular bladder 4 4. Drive groove 45, drive plate 46, second spring 47, third liquid hole 48, drive block 49, storage tank 5, piston 51, first spring 52, center rod 53, lower liquid hole 54, upper cavity 55, lower cavity 56, upper block 57, handle 6, temporary storage groove 61, temporary storage block 62, tension spring 63, second liquid hole 64, tank body 7, first water permeable groove 71, shielding groove 72, chassis 8, third spring 81, shielding sleeve 9, second water permeable groove 91. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 7 As shown, the present invention includes the following embodiments: Example 1: A performance testing platform for a cylindrical liquid heater includes a test bench 1 and two arc-shaped plates 2 symmetrically fixedly connected on the test bench 1; two joint gaps 21 are formed between the two arc-shaped plates 2 for the liquid heater connector to move; the inner sides of the two arc-shaped plates 2 are adapted to the outer wall of the liquid heater; a horizontal cylinder 12 is fixedly connected to the upper surface of the test bench 1 via a vertical cylinder 11; a sealing connector 13 with a flexible hose is fixedly connected to the output shaft of the horizontal cylinder 12; a gap block 3 is slidably connected up and down within the joint gap 21; and two arc-shaped plates 2 are slidably connected up and down within the joint gaps 21. A placement seat 4 is fixedly connected to the gap block 3; a liquid inlet hole 41 is provided through the center of the upper surface of the placement seat 4; a liquid storage tank 5 is provided inside the test platform 1; a piston 51 is slidably and sealed to the inner wall of the liquid storage tank 5; the lower surface of the piston 51 is connected to the bottom wall of the liquid storage tank 5 by a first spring 52; a central rod 53 is fixedly connected to the upper surface of the piston 51; the upper end of the central rod 53 passes through the test platform 1 and is fixedly connected to the lower surface of the placement seat 4; the central rod 53 is movably and sealed to the test platform 1; the liquid inlet hole 41 and the lower surface of the piston 51 are connected by a liquid outlet hole 54.

[0024] The arc plate 2 is arched at its upper end; the upper surface of the placement seat 4 is provided with a placement groove 42 that is concentric with the liquid inlet 41; the depth of the placement groove 42 increases as it approaches the liquid inlet 41; the piston 51 divides the interior of the liquid storage tank 5 into an upper chamber 55 and a lower chamber 56; the upper chamber 55 is connected to the outside of the liquid storage tank 5.

[0025] After the liquid heater is assembled, it is lifted vertically, and the drain connector at the lower end of the liquid heater is placed into the placement tank 42. The depth of the placement tank 42 increases as it approaches the upper liquid hole 41. This allows the drain connector to slide along the bottom of the placement tank 42 into the upper liquid hole 41 under the guidance of the inclined bottom of the tank. After the drain connector is inserted into the upper liquid hole 41, it will continue to move downwards until the bottom of the liquid heater enters the placement tank 42, thus completing the placement of the liquid heater. Then, the liquid heater is released, and the liquid heater moves the placement seat 4 downwards under its own gravity. During the downward movement of the placement seat 4, the central rod 53 and the piston 51 will also move downwards. During the downward movement of the piston 51, it will overcome the elastic force of the first spring 52. During the downward movement of the piston 51 in the liquid storage tank 5, the space in the upper chamber 55 will increase and the space in the lower chamber 56 will decrease. After the liquid pressure in the lower chamber 56 increases, it will enter the upper liquid hole 41 through the lower liquid hole 54 and finally be injected into the liquid heater through the upper liquid hole 41.

[0026] Because the liquid in the lower chamber 56 enters the liquid heater at a limited speed, the placement seat 4 and the liquid heater are damped by liquid, thus buffering the downward movement of the liquid heater. The inlet and outlet connectors on the liquid heater are guided into the connector gap 21 by the arched surface at the upper end of the arc plate 2. The width of the connector gap 21 is adapted to the outer diameter of the inlet connector, so that the inlet and outlet connectors can be smoothly guided and enter and move along the connector gap 21. After the placement seat 4 moves down inside the arc plate 2, it will fall on the upper surface of the test platform 1. Thus, the piston 51 and the center rod 53 stop moving down, and the liquid in the lower chamber 56 also stops entering the liquid heater, completing the pre-loading of liquid in the liquid heater.

[0027] After the liquid heater is connected to the power supply, the heating wire inside the liquid heater starts to work. When the placement seat 4 is moved to the extreme position, the liquid inlet and outlet connectors in the liquid heater are aligned with the corresponding sealing connectors 13. Then, the horizontal cylinder 12 extends and drives the sealing connectors 13 to move. The two sealing connectors 13 move closer to each other and press against the liquid inlet and outlet connectors on the liquid heater. One of the sealing connectors 13 injects liquid along the liquid inlet connector. The liquid flows inside the liquid heater and is heated by the heating wire. The heated liquid flows out along the liquid outlet connector and the other sealing connector 13. The heating performance of the liquid heater is judged based on the temperature of the liquid flowing out of the liquid heater.

[0028] After the performance test of the liquid heater is completed, the power supply to the liquid heater is disconnected, and the horizontal cylinder 12 is shortened. The horizontal cylinder 12 will drive the two sealing joints 13 to move away from each other, and the sealing joints 13 will disengage from the inlet and outlet joints. Then, the placement seat 4 is moved upward. During the upward movement of the placement seat 4, it will support the liquid heater. As the placement seat 4 moves upward, it will drive the center rod 53 and piston 51 to move upward. During the upward movement of the piston 51, the space in the lower chamber 56 will increase, creating a negative pressure. In this way, the liquid in the liquid heater will enter through the drain joint, the upper liquid hole 41, and the lower liquid hole 54. In the lower chamber 56, the liquid in the liquid heater is quickly poured out after the performance test is completed. A collection shell (not shown in the figure) can be set around the test bench 1 to collect the overflow liquid. When the placement seat 4 is moved to the limit position, the liquid heater that has completed the test can be lifted off the placement seat 4. In this embodiment, during the loading process of the liquid heater as the placement seat 4 moves down, the liquid in the liquid storage tank 5 enters the liquid heater through the lower liquid hole 54 and the upper liquid hole 41, thereby achieving pre-loading of the liquid inside the liquid heater while the liquid heater is loaded and buffered during the downward movement, thereby improving the testing efficiency of the liquid heater in the future.

[0029] Example 2: A rotating groove 31 is provided on the outer wall of the gap block 3 away from the placement seat 4; a handle 6 is rotatably and sealed within the rotating groove 31; a groove 32 is provided on the side of the gap block 3 that contacts the arc plate 2; the bottom of the groove 32 is connected to the wall of the rotating groove 31 through a first liquid hole 33; a locking block 34 is slidably and sealed within the groove 32; a guide surface 341 is provided with the end of the locking block 34 that is inclined downwards away from the first liquid hole 33; the arc plate 2 is positioned corresponding to the groove 32 on the gap block 3. The handle 6 has a slot 22; the locking block 34 can extend into the slot 22; a temporary storage groove 61 is provided at the end of the handle 6 away from the gap block 3; a temporary storage block 62 is slidably and sealed in the temporary storage groove 61; the temporary storage block 62 is connected to the bottom of the temporary storage groove 61 by a tension spring 63; the outer wall of the handle 6 located in the rotating groove 31 is connected to the bottom of the temporary storage groove 61 by a second liquid hole 64; the second liquid hole 64 is connected to or offset from the first liquid hole 33 after the handle 6 is rotated; the temporary storage groove 61 is filled with a liquid medium.

[0030] The inner wall of the rotating groove 31 is provided with an arc-shaped positioning groove 35; a positioning block 36 is slidably connected in the positioning groove 35; the positioning block 36 is fixedly connected to the outer wall of the handle 6.

[0031] In its initial state, the placement seat 4 is located at the upper limit position inside the arc plate 2. After the liquid heater is placed on the placement seat 4, the handle 6 is rotated. During the rotation of the handle 6, the positioning block 36 will move within the positioning groove 35, causing one end of the positioning block 36 to move to the other end within the positioning groove 35. The second liquid hole 64 on the handle 6 is connected to the first liquid hole 33. When the handle 6 is released, the liquid heater will transfer gravity to the placement seat 4. The placement seat 4 has a large downward force, which is transmitted to the locking block 34, causing the gap block 3 and the locking block 34 to move downward. The guide surface 341 on the locking block 34 will be squeezed by the groove opening of the locking groove 22, causing the locking block 34 to retract into the groove 32. The liquid medium in the groove 32 will enter the temporary storage tank 61 along the first liquid hole 33 and the second liquid hole 64. As the amount of liquid in the temporary storage tank 61 increases, the temporary storage block 62 will overcome the tension of the tension spring 63 and move away from the bottom of the temporary storage tank 61. After the placement seat 4 moves to its lower limit position, the next step of preparation and testing of the liquid heater is carried out.

[0032] After the test is completed, the handle 6 is moved upwards. During this upward movement, the placement seat 4 is moved upwards, supporting the liquid heater. As the placement seat 4 moves upwards, the gap block 3 moves upwards within the connector gap 21. When the gap block 3 reaches its limit position with the placement seat 4, the groove 32 on the gap block 3 aligns with the slot 22 again. The tension spring 63 pulls the temporary storage block 62, squeezing the liquid in the temporary storage tank 61. The liquid in the temporary storage tank 61 flows along the second liquid hole 64 and the first liquid hole 33 into the groove 32. The liquid in the groove 32 pushes the locking block 34 into the slot 22. Then, the handle 6 is rotated in the opposite direction. During this rotation, the positioning block 36 is positioned... The positioning block 36 moves from one end of the positioning groove 35 to the other, thus misaligning the second liquid hole 64 with the first liquid hole 33. This isolates the liquid in the groove 32. When the handle 6 is released and the liquid heater on the placement seat 4 is removed, the weight of the liquid heater on the placement seat 4 is transmitted to the locking block 34. The locking block 34 transmits the force to the liquid in the groove 32, but the liquid in the groove 32 cannot be discharged. Therefore, the locking block 34 cannot retract into the groove 32, thus locking the locking block 34 in the slot 22 and locking the gap block 3. This locks the position of the placement seat 4, making it easier for the tester to lift and remove the liquid heater from the placement seat 4.

[0033] In this embodiment, the placement seat 4 can be locked after moving to its upper limit position, so that the liquid heater can be installed and removed when the placement seat 4 is in a stable position, which facilitates the operation and use of the test personnel during the test process.

[0034] Example 3: An annular groove 43 is provided on the inner wall of the upper liquid hole 41; an annular bladder 44 is fixedly connected in the annular groove 43; a driving groove 45 is provided inside the placement seat 4; a driving plate 46 is slidably and sealingly connected to the driving groove 45 along the radial direction of the placement seat 4; the side of the driving plate 46 near the upper liquid hole 41 is connected to the wall of the driving groove 45 by a second spring 47; the wall of the driving groove 45 near the upper liquid hole 41 is connected to the wall of the annular groove 43 by a third liquid hole 48; a vertical groove 23 is vertically provided on the inner wall of the arc plate 2; a gradient groove 24 with decreasing depth from top to bottom is provided at the bottom of the upper end of the vertical groove 23; the gradient groove 24 is part of the vertical groove 23; a driving block 49 is fixedly connected to the end of the driving plate 46 away from the second spring 47; the end of the driving block 49 away from the second spring 47 extends through the placement seat 4 into the vertical groove 23; the driving block 49 is movably connected to the placement seat 4.

[0035] The annular bladder 44 has an inverted Y-shaped cross-section and is a body of revolution; the annular bladder 44 is made of an elastic material, such as rubber.

[0036] In its initial state, the drive block 49 is located in the gradient groove 24 at the upper end of the vertical groove 23. The depth of the gradient groove 24 decreases from top to bottom. As the drain connector at the lower end of the liquid heater is inserted into the upper liquid hole 41, the drain connector will enter the inner side of the annular groove 43. Subsequently, the liquid heater will drive the placement seat 4 to move downward. During the downward movement of the placement seat 4, the drive block 49 will move from top to bottom in the gradient groove 24. The bottom of the gradient groove 24 will squeeze the drive block 49, thereby causing the drive block 49 to move closer to the upper liquid hole 41, driving... Block 49 will drive the drive plate 46 to move within the drive groove 45 and overcome the compression of the liquid or gas medium within the drive groove 45 by the second spring 47. The medium within the drive groove 45 will enter the annular groove 43 along the third liquid hole 48, thereby causing the annular bladder 44 within the annular groove 43 to bulge inward and press against the outer wall of the drain connector, achieving a seal between the inner wall of the upper liquid hole 41 and the outer wall of the drain connector. This prevents leakage between the upper liquid hole 41 and the drain connector during the liquid heater test, thus making the liquid heater test more stable.

[0037] Furthermore, since the rotating section of the annular bladder 44 is inverted Y-shaped, the resistance of the outer wall of the drain connector of the liquid heater increases under the pressure of the annular bladder 44, making it difficult to pull out. This makes the liquid heater more stable on the placement seat 4, further improving the test stability of the liquid heater. As the placement seat 4 moves down, the drive block 49 will enter the lower end of the vertical groove 23. After the test is completed, the placement seat 4 moves up, which will drive the drive block 49 back into the gradient groove 24. The second spring 47 pushes the drive plate 46 to move away from the upper liquid hole 41 in the drive groove 45. The medium in the annular groove 43 will enter the drive groove 45 along the third liquid hole 48. The annular bladder 44 will deflate and retract into the annular groove 43, releasing the clamping and sealing of the drain connector and the inner wall of the upper liquid hole 41, so that the drain connector can be moved out as the liquid heater is lifted.

[0038] Example 4: The test bench 1 has a liquid chamber 14 inside; the upper port of the liquid storage tank 5 is fixedly connected to the upper inner wall of the liquid chamber 14 by an upper block 57; the liquid storage tank 5 is composed of a sleeve-shaped tank body 7 and a disc-shaped base 8; the inner and outer walls of the tank body 7 are provided with a first water permeable groove 71 running radially through them; the lower end face of the tank body 7 is provided with an annular shielding groove 72 running through it; the shielding groove 72 passes through the first water permeable groove 71; a shielding sleeve 9 is slidably and sealed inside the shielding groove 72; the inner and outer walls of the shielding sleeve 9 are provided with a second water permeable groove 91 running radially through them; the lower end of the shielding sleeve 9 is fixedly connected to the upper surface of the base 8; the recessed position of the lower surface of the base 8 is connected to the lower inner wall of the liquid chamber 14 by a third spring 81; the piston 51 is movably and sealed to the inner wall of the tank body 7; the lower end of the first spring 52 is fixedly connected to the upper surface of the base 8, and the liquid level in the liquid chamber 14 is higher than the upper port of the liquid storage tank 5 in the vertical direction.

[0039] The first permeable trough 71 and the second permeable trough 91 are oriented in the same direction; the outer wall of the test platform 1 is provided with a first connector 15 and a second connector 16 that communicate with the liquid chamber 14; the liquid inlet direction of the first connector 15 is oriented toward the first permeable trough 71.

[0040] Before the liquid heater is placed on the placement seat 4, the placement seat 4 is in its upper limit position. The base 8 is also in its upper limit position under the elastic force of the third spring 81. The first water permeable groove 71 and the second water permeable groove 91 are connected and aligned. After the liquid heater is placed on the upper surface of the placement seat 4, the placement seat 4 will move downward. During the downward movement of the placement seat 4, the central rod 53 will move downward. During the downward movement of the central rod 53, the piston 51 will move downward. During the downward movement of the piston 51, the first spring 52 will be squeezed. The first spring 52 will transmit its elastic force to the base 8. In this way, the base 8 will transmit the elastic force of the first spring 52 to the third spring 81, causing the third spring 81 to be squeezed and compressed. The base 8 will then move downward and press against the lower inner wall of the liquid chamber 14. As the chassis 8 moves downward, it will cause the shielding sleeve 9 to move downward. As the shielding sleeve 9 moves downward, it will cause the second permeable groove 91 to be misaligned with the first permeable groove 71, thus sealing the lower cavity 56 inside the liquid storage tank 5. As the placement seat 4 continues to move downward, the placement seat 4 will cause the piston 51 to continue to move downward. As the piston 51 moves downward, it will squeeze the lower cavity 56. The liquid in the lower cavity 56 will enter the liquid heater along the lower liquid hole 54 and the upper liquid hole 41. As the piston 51 moves downward, the space in the upper cavity 55 increases, forming a negative pressure. This will cause the upper cavity 55 to draw in liquid through the gap between the adjacent upper blocks 57. The liquid will further cool the liquid flowing inside the center rod 53, thus further reducing the temperature of the liquid entering the liquid heater.

[0041] As piston 51 stops moving downwards, the liquid heater will proceed to the next operation and test. After the test is completed, the placement seat 4 and piston 51 move upwards. During the upward movement of piston 51, it moves away from the chassis 8, increasing the space in the lower chamber 56 and creating negative pressure. The liquid in the liquid heater will flow back into the lower chamber 56. As the placement seat 4 continues to move upwards, the elastic force of the first spring 52 will gradually decrease to that of the third spring 81. The third spring 81 will then drive the chassis 8 to move upwards. During the upward movement of the chassis 8, the shielding sleeve 9 will move within the shielding groove 72. The retainer 9 will cause the second permeable groove 91 to align with the first permeable groove 71 again, exposing the lower cavity 56 and connecting it with the liquid in the liquid cavity 14. The flowing liquid entering from the first connector 15 will pass through the first permeable groove 71 and the second permeable groove 91, and finally flow out along the second connector 16, thereby replacing the used liquid in the lower cavity 56. This keeps the liquid in the lower cavity 56 at a low temperature, preventing high-temperature liquid from entering the next liquid heater and causing detection errors, thus improving the testing accuracy of the liquid heater.

[0042] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 1The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A performance testing platform for a cylindrical liquid heater, comprising a test platform and two arc-shaped plates on the test platform; a joint gap is formed between the two arc-shaped plates; an adjustable sealing joint is provided on the test platform; characterized in that: A gap block is slidably connected up and down within the joint gap; a placement seat, which is fixedly connected to the gap block, is slidably connected up and down on the inner sides of the two arc-shaped plates; an upper liquid inlet is provided through the center of the upper surface of the placement seat; a liquid storage tank is provided inside the test platform; a piston is elastically and slidably sealed to the inner wall of the liquid storage tank; a central rod is fixedly connected to the upper surface of the piston; the upper end of the central rod passes through the test platform and is fixedly connected to the lower surface of the placement seat; the upper liquid inlet and the lower surface of the piston are connected through a lower liquid inlet.

2. The performance testing platform for a cylindrical liquid heater according to claim 1, characterized in that: The upper surface of the placement seat is provided with a placement groove; the depth of the placement groove increases as it approaches the liquid inlet; the piston divides the interior of the liquid storage tank into an upper chamber and a lower chamber; the upper chamber is connected to the outside of the liquid storage tank.

3. The performance testing platform for a cylindrical liquid heater according to claim 1, characterized in that: The gap block has a rotating groove on its outer wall away from the placement seat; a handle is rotatably and sealed within the rotating groove; a groove is provided on the side of the gap block that contacts the arc plate; the bottom of the groove and the wall of the rotating groove are connected through a first liquid hole; a locking block is slidably and sealed within the groove; a guide surface is provided on the end of the locking block that is away from the first liquid hole and tilted downwards; a slot is provided on the arc plate corresponding to the groove on the gap block; the locking block can extend into the slot; a temporary storage groove is provided on the end of the handle away from the gap block; a temporary storage block is slidably and sealed within the temporary storage groove; the temporary storage block and the bottom of the temporary storage groove are connected by a tension spring; the outer wall of the handle located in the rotating groove and the bottom of the temporary storage groove are connected through a second liquid hole.

4. The performance testing platform for a cylindrical liquid heater according to claim 3, characterized in that: The inner wall of the rotating groove is provided with an arc-shaped positioning groove; a positioning block is slidably connected in the positioning groove; the positioning block is fixedly connected to the outer wall of the handle.

5. The performance testing platform for a cylindrical liquid heater according to claim 1, characterized in that: An annular groove is provided on the inner wall of the liquid inlet; an annular bladder is fixedly connected in the annular groove; a drive groove is provided inside the placement seat; a drive plate is elastically and slidably connected to the drive groove along the radial direction of the placement seat; the groove wall of the drive groove near the liquid inlet and the groove wall of the annular groove are connected through a third liquid hole; a vertical groove is provided on the inner wall of the arc-shaped plate; a gradient groove with decreasing depth from top to bottom is provided at the bottom of the groove near the upper end of the vertical groove; a drive block is fixedly connected to the end of the drive plate away from the second spring; the end of the drive block away from the second spring extends through the placement seat into the vertical groove.

6. The performance testing platform for a cylindrical liquid heater according to claim 5, characterized in that: The annular bladder has an inverted Y-shaped cross-section.

7. The performance testing platform for a cylindrical liquid heater according to claim 2, characterized in that: The test bench has a liquid chamber inside; the upper port of the liquid storage tank is fixedly connected to the upper inner wall of the liquid chamber via an upper block; the liquid storage tank is composed of a sleeve-shaped tank body and a disc-shaped base; a first water-permeable groove is radially provided through the inner and outer walls of the tank body; a shielding sleeve is slidably and sealingly connected to the tank body; a second water-permeable groove is radially provided through the inner and outer walls of the shielding sleeve; the lower end of the shielding sleeve is fixedly connected to the upper surface of the base; the lower surface of the base is elastically connected to the lower inner wall of the liquid chamber.

8. The performance testing platform for a cylindrical liquid heater according to claim 7, characterized in that: The liquid level in the liquid cavity is higher than the upper port of the storage tank in the vertical direction.

9. The performance testing platform for a cylindrical liquid heater according to claim 8, characterized in that: The first and second permeable troughs are oriented in the same direction; the outer wall of the test platform is provided with a first connector and a second connector that communicate with the liquid chamber; the liquid inlet direction of the first connector is oriented towards the first permeable trough.

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