Aggregation type ultrasonic transducer testing device

Abstract

The utility model relates to a gathering type ultrasonic transducer testing device which comprises a testing box containing degassing water, a degassing water tank, a water pump and a backflow pipe, thermochromic gel is placed in the testing box, a clamp is further arranged in the testing box to clamp an ultrasonic transducer so that the ultrasonic transducer can be immersed in the degassing water, and the focus of the ultrasonic transducer is aligned with the thermochromic gel. The water inlet end of the water pump is connected with the degassing water tank, the water outlet end of the water pump is connected with the test box through the buffer box and pumps degassing water in the degassing water tank into the test box, the water inlet end of the backflow pipe is connected with the test box, and the water outlet end of the backflow pipe is connected with the degassing water tank so that the degassing water in the test box can flow back into the degassing water tank. The heat between the ultrasonic transducer and the thermochromic gel is taken away, and the heat cannot be gathered between the ultrasonic transducer and the thermochromic gel, so that local color change of the thermochromic gel cannot be caused, and the test result cannot be influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic transducer testing, in particular to a testing device for a focused ultrasonic transducer. Background Art

[0002] The testing device for a focused ultrasonic transducer includes a test chamber containing degassed water, an in-vitro tissue such as a pig liver placed in the test chamber, and a fixture. During testing, the ultrasonic transducer is clamped by the fixture, immersed in the degassed water, and the focus of the ultrasonic transducer is aligned with the focal region of the pig liver. Then, a temperature sensor is inserted into the focal region of the pig liver. The ultrasonic transducer is activated to generate ultrasonic energy, and the ultrasonic energy is transmitted through the degassed water to the focal region of the pig liver, causing the focal region of the pig liver to heat up. The tester indirectly understands the aggregation of ultrasonic energy from the detection result of the temperature sensor. In this way, the aggregation of ultrasonic energy on the in-vitro tissue cannot be visually observed. Patent document CN209459788U discloses a thermochromic gel. Using this thermochromic gel instead of a pig liver for testing, when the ultrasonic energy generated by the ultrasonic transducer is transmitted through the degassed water to the thermochromic gel, the thermochromic gel is heated and changes color, and the tester can visually observe the aggregation of ultrasonic energy. As a coupling medium between the ultrasonic transducer and the thermochromic gel, degassed water can effectively reduce the bubbles between the ultrasonic transducer and the thermochromic gel and prevent the bubbles from interfering with the transmission of ultrasonic energy. However, degassed water itself will cause certain interference to the testing. The reason is that during the ultrasonic testing process, the ultrasonic energy is transmitted to the degassed water between the ultrasonic transducer and the thermochromic gel, causing the degassed water to generate heat. These heats accumulate between the ultrasonic transducer and the thermochromic gel, easily causing local discoloration of the thermochromic gel and affecting the testing results. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a testing device for a focused ultrasonic transducer. During the testing process of this device using a thermochromic gel, heat will not accumulate between the ultrasonic transducer and the thermochromic gel, and it will not cause local discoloration of the thermochromic gel, thus not affecting the testing results.

[0004] The testing device for a focused ultrasonic transducer includes a test chamber containing degassed water, a degassed water tank, a water pump, and a return pipe. A thermochromic gel is placed in the test chamber. A fixture is also provided in the test chamber to clamp the ultrasonic transducer so that the ultrasonic transducer is immersed in the degassed water and its focus is aligned with the thermochromic gel. The water inlet end of the water pump is connected to the degassed water tank, and the water outlet end is connected to the test chamber to pump the degassed water in the degassed water tank into the test chamber. The water inlet end of the return pipe is connected to the test chamber, and the water outlet end is connected to the degassed water tank to supply the degassed water in the test chamber to flow back into the degassed water tank.

[0005] When the device is in use: The tester clamps the ultrasonic transducer with a fixture, immerses the ultrasonic transducer in degassed water, and aligns the focus of the ultrasonic transducer with the thermochromic gel. Then, the ultrasonic transducer is activated to generate ultrasonic energy, which is transmitted through the degassed water to the thermochromic gel, causing the thermochromic gel to heat up and change color. During this process, the ultrasonic energy generates heat in the degassed water between the ultrasonic transducer and the thermochromic gel. The tester activates the water pump, which pumps the degassed water in the degassed water tank into the test chamber, causing the water level in the test chamber to rise. The degassed water pumped into the test chamber flows back into the degassed water tank through the return pipe, thus making the degassed water in the test chamber flow, carrying away the heat between the ultrasonic transducer and the thermochromic gel. The heat will not accumulate between the ultrasonic transducer and the thermochromic gel, and will not cause local discoloration of the thermochromic gel, thus not affecting the test results.

[0006] Furthermore, the water outlet end of the water pump is connected to the first side of the test chamber, and the water inlet end of the return pipe is connected to the second side of the test chamber opposite to the first side.

[0007] Furthermore, a buffer tank is connected in series between the water outlet end of the water pump and the test chamber. The water pump pumps the degassed water into the first side of the buffer tank, and the degassed water in the buffer tank flows from the second side opposite to the first side of the buffer tank to the test chamber. A vertical partition is provided between the first side and the second side in the buffer tank, and a degassed water flow port is opened on the vertical partition for the degassed water to flow from the first side of the buffer tank to the second side of the buffer tank.

[0008] Furthermore, the water outlet end of the water pump is connected to the upper part of the buffer tank, and the degassed water flow port is opened at the bottom of the vertical partition.

[0009] Furthermore, the vertical partition in the buffer tank separates the left side and the right side of the buffer tank. The water pump pumps the degassed water to the left side of the buffer tank, and at most only generates turbulence on the left side of the buffer tank, without causing too much impact on the right side of the buffer tank. Therefore, the degassed water on the right side of the buffer tank can flow smoothly into the test chamber.

[0010] Furthermore, the test chamber is specifically a transparent test chamber, and the tester can directly observe the aggregation situation of the ultrasonic energy through the transparent test chamber. Description of the Drawings

[0011] The following further describes the present utility model in detail in conjunction with the drawings and specific embodiments.

[0012] Figure 1 is a perspective view of the aggregated ultrasonic transducer test device.

[0013] Figure 2 is Figure 1 a partial enlarged view of Figure 1 in which part Ⅰ of

[0014] Figure 3 Yes Figure 1 It is a top view of the shown focused ultrasonic transducer testing device.

[0015] Figure 4 Yes Figure 3 It is a sectional view taken along line A-A of

[0016] Figure 5 Yes Figure 4 It is a sectional view taken along line B-B of , only the test box is shown in the figure. Specific implementation manners

[0017] The present invention will be further described in detail below in conjunction with specific implementation manners.

[0018] Figure 1 , Figure 2 , Figure 4 The shown focused ultrasonic transducer testing device includes a transparent test box 1 containing degassed water (not shown in the figure). A thermochromic gel 2 is placed at the inner bottom of the test box 1. A fixture 3 is installed at the inner top of the test box 1. The fixture 3 includes a sliding rod 31 in the left-right direction and two left and right clamping blocks 32, 33. The left and right clamping blocks 32, 33 are respectively provided with sliding grooves 323, 333. The sliding rod 31 passes through the sliding grooves 323, 333 of the left and right clamping blocks 32, 33 and is installed on the test box 1. The left and right clamping blocks 32, 33 are installed on the sliding rod 31 in this way. See Figure 2 and Figure 5 , Locking threaded holes 320, 330 are opened on the groove walls of the sliding grooves 323, 333 of the left and right clamping blocks 32, 33. Locking bolts 321, 331 are installed in the lockings 320, 330. The heads of the locking bolts 321, 331 are exposed, and the tails are close to the sliding rod 31 but do not abut against the sliding rod 31. Therefore, the left and right clamping blocks can usually slide left and right along the sliding rod 31 respectively. See Figure 2 and Figure 5 , A fixture adjustment threaded hole 322 is opened at the rear of the left clamping block 32. An installation hole 332 is opened at the rear of the right clamping block 33 and is aligned with the fixture adjustment threaded hole 322. A screw rod 34 is installed at the installation hole 332. The head of the screw rod 34 extends rightward out of the installation hole 332 and is provided with a radial protrusion. The tail is screwed into the fixture adjustment threaded hole 322 in the leftward rotation direction. The tester can drive the left and right clamping blocks 32, 33 to approach each other by rotating the radial protrusion of the screw rod 34. The thread of the screw rod 34 has self-locking property. That is to say, when the left and right clamping blocks 32, 33 are subjected to external forces, the screw rod 34 will not be driven by the external forces to rotate by itself. This is the prior art. Rubber pads 35 are respectively installed at the lower parts of the left and right clamping blocks 32, 33 and extend into the degassed water. The opening of the test box 1 faces upward and is covered with a test box cover 10 (see Figure 1 ).

[0019] SeeFigure 2 , Figure 4 and Figure 5 , during the test: the tester opens the test box cover 10, places the focused ultrasonic transducer 4 between the lower parts of the left and right clamping blocks 32 and 33, then rotates the radial protrusion of the screw 34 to drive the left and right clamping blocks 32 and 33 to approach each other until the two rubber pads 35 of the left and right clamping blocks 32 and 33 jointly clamp the ultrasonic transducer 4. In this state, the ultrasonic transducer 4 is immersed in degassed water; the tester first preliminarily determines the focus of the ultrasonic transducer 4, and then makes the left and right clamping blocks 32 and 33 slide left and right along the sliding rod 31 to drive the ultrasonic transducer 4 to move left and right until the focus of the ultrasonic transducer 4 is aligned with the thermochromic gel 2. The tester then tightens the two locking bolts 321 and 331 so that the tails of the two locking bolts 321 and 331 abut against the sliding rod 31. In this state, the two locking bolts 321 and 331 respectively lock the left and right clamping blocks 32 and 33; the tester closes the test box cover 10, and then starts the ultrasonic transducer 4 to generate ultrasonic energy. The ultrasonic energy is transmitted to the thermochromic gel 2 through the degassed water, causing the thermochromic gel 2 to heat up and change color. The tester can directly see the aggregation of the ultrasonic energy through the transparent test box 1.

[0020] See Figure 1 , Figure 3 and Figure 4 , this test device includes a degassing water tank 5, a water pump 6, a buffer tank 8 and a return pipe 7. Degassed water (not shown in the figure) is contained in both the degassing water tank 5 and the buffer tank 8. The water inlet end 61 of the water pump 6 is connected to the right side of the degassing water tank 5, and the water outlet end 62 is connected to the upper part of the left side 81 of the buffer tank. The right side 82 of the buffer tank is connected to the left side 11 of the test box 1 through a horizontal degassing water circulation pipe 9. In this way, the water outlet end 62 of the water pump 6 is indirectly connected to the left side 11 of the test box 1. The water inlet end 71 of the return pipe 7 is connected to the right side 12 of the test box 1, and the water outlet end 72 is connected to the left side of the degassing water tank 5. A vertical partition 83 is provided between the left side 81 and the right side 82 of the buffer tank 8. A degassing water circulation port 84 is opened at the bottom of the vertical partition 83, and degassed water can flow from the left side 81 of the buffer tank through the degassing water circulation port 84 to the right side 82 of the buffer tank.

[0021] See Figure 1 , Figure 3 and Figure 4During the test, the ultrasonic energy generates heat in the degassed water between the ultrasonic transducer and the thermochromic gel 2. During the test, the tester starts the water pump 6, and the water pump 6 pumps the degassed water on the right side of the degassed water tank 5 into the left side 81 of the buffer tank, so that the water level on the left side 81 of the buffer tank rises, thereby making the water level on the left side 81 of the buffer tank higher than the right side 82 of the buffer tank. Then, the degassed water on the left side 81 of the buffer tank flows from the degassed water flow port 84 to the right side 82 of the buffer tank, thereby raising the water level on the right side 82 of the buffer tank. When the water level on the right side 82 of the buffer tank rises to a level higher than the degassed water flow pipe 9, the degassed water on the right side 82 of the buffer tank flows from the degassed water flow pipe 9 to the left side 11 of the test box 1. In this way, the water pump 6 pumps the degassed water in the degassed water tank 5 into the test box 1. The degassed water entering the test box 1 flows from left to right and causes the water level in the test box 1 to rise. When the water level in the test box 1 rises to be higher than the liquid inlet end 71 of the reflux pipe 7, the degassed water in the test box 1 flows back from the reflux pipe 7 to the degassed water tank 5, that is, the degassed water in the test box 1 flows from left to right. The flowing degassed water takes away the heat between the ultrasonic transducer 4 and the thermochromic gel 2, so the heat will not accumulate between the ultrasonic transducer and the thermochromic gel 2.

[0022] See Figure 1 , Figure 3 and Figure 4 , the degassed water pumped out by the water pump 6 is relatively turbulent. If the water outlet 62 of the water pump 6 is directly connected to the test box 1, it is easy to form turbulence in the test box 1. The water outlet 62 of the water pump 6 of the present device is indirectly connected to the test box 1 through the buffer box 8. The degassed water pumped out by the water pump 6 is first buffered by the buffer box 8 before flowing into the test box 1. It is not easy to form turbulence in the test box 1, reducing the impact on the thermochromic gel 2 in the test box 1. The vertical partition 83 in the buffer box 8 separates the left side 81 of the buffer box from the right side 82 of the buffer box. The water pump 6 pumps the degassed water to the left side 81 of the buffer box. At most, turbulence will only be generated on the left side 81 of the buffer box, and will not cause much impact on the right side 82 of the buffer box. Therefore, the degassed water on the right side 82 of the buffer box can flow smoothly into the test box 1.

[0023] See also Figure 4 In other embodiments, the buffer box 8 can be eliminated, and the water outlet 62 of the water pump 6 is directly connected to the test box 1 .

[0024] See also Figure 4 In other embodiments, the deaerated water flow port 84 can be changed to be opened at other positions of the vertical partition 83, for example, changed to be opened in the middle of the vertical partition 83.

[0025] See also Figure 4, in other embodiments, the vertical partition 83 can be cancelled. In this case, the water pump 6 pumps the degassed water to the left side 81 of the buffer tank, and the degassed water flows from the left side 81 of the buffer tank to the right side 82 of the buffer tank. During this process, the degassed water will become relatively stable, that is to say, the buffer tank 8 can still play a buffering role.

[0026] See Figure 4 , in other embodiments, an opaque test box 1 can be used instead. After the test, the tester opens the test box cover 10 to take out the thermochromic gel 2 for observation.

[0027] As described above, this is only the implementation mode of the present invention, and the patent protection scope is not limited thereby. Those skilled in the art make non-substantive changes or substitutions on the basis of the present invention, and still fall within the patent protection scope.

Claims

1. A focusing ultrasonic transducer testing device, comprising a test box containing degassed water, a thermochromic gel placed in the test box, and a fixture for clamping the ultrasonic transducer so that the ultrasonic transducer is immersed in the degassed water and its focus is on the thermochromic gel, characterized in that: It includes a degassed water tank, a water pump and a reflux pipe. The water inlet end of the water pump is connected to the degassed water tank, and the water outlet end is connected to a test box. The degassed water in the degassed water tank is pumped into the test box. The water inlet end of the reflux pipe is connected to the test box, and the water outlet end is connected to the degassed water tank. The degassed water in the test box is returned to the degassed water tank.

2. The testing device according to claim 1, characterized in that: The water outlet end of the water pump is connected to the first side of the test box, and the water inlet end of the return pipe is connected to the second side of the test box opposite to the first side.

3. The testing device according to claim 1, characterized in that: A buffer box is connected in series between the water outlet of the water pump and the test box. The water pump pumps degassed water into a first side of the buffer box, and the degassed water in the buffer box flows to the test box from a second side of the buffer box opposite to the first side.

4. The testing device according to claim 3, characterized in that: A vertical partition is provided between the first side and the second side of the buffer box, and a degassed water flow opening is provided on the vertical partition for the degassed water to flow from the first side of the buffer box to the second side of the buffer box.

5. The testing device according to claim 4, characterized in that: The water outlet of the water pump is connected to the upper part of the buffer tank, and the deaerated water flow port is opened at the bottom of the vertical partition.

6. The testing device according to claim 1, characterized in that: The test box is specifically a transparent test box.

Images