Testing device and testing method

Abstract

The invention relates to the technical field of medical equipment detection, and discloses a testing device and a testing method.The testing device comprises a liquid supply unit, a liquid inlet pipe and a liquid outlet pipe. The liquid source provides liquid for the liquid supply unit through the liquid inlet pipe, the liquid outlet can be in a closed state in the initial liquid inlet stage, and when the liquid level in the liquid supply unit rises to the position of the pressure equalizing port, due to the fact that the liquid inlet amount of the liquid inlet pipe is not smaller than the liquid outlet amount of the liquid outlet pipe, the liquid level in the liquid supply unit is not lower than the position of the pressure equalizing port; when the liquid level in the liquid supply unit is higher than the pressure equalizing port, the liquid is discharged through the pressure equalizing port to maintain the stability of the liquid level height in the liquid supply unit, so that the device can restore the pressure value of the pipe fitting to be detected in the actual application scene; the pressure borne by the to-be-tested pipe fitting in the testing process is always the pressure borne by the to-be-tested pipe fitting in an actual application scene, and meanwhile, the continuity of flowing of liquid in the to-be-tested pipe fitting is ensured, so that the technical effect of improving the reliability of quality detection of the to-be-tested pipe fitting is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment detection, and in particular to a testing device and a testing method. Background Art

[0002] Percutaneous transhepatic biliary drainage (PTBD) is one of the important minimally invasive treatments for obstructive jaundice. It is also called ultrasound-guided percutaneous transhepatic biliary drainage. It is a surgical technique that inserts a drainage tube into the biliary system by puncture to drain bile. This technology has the advantages of simple operation, no radioactivity, and bedside operation, and is widely used in clinical practice.

[0003] In percutaneous transhepatobiliary catheter drainage, a drainage tube that is placed outside the patient's body and fixed with a connector is usually connected and fixed to a collection bag through a connector. Existing connectors only perform a simple quality inspection on the connected connector and drainage tube before leaving the factory. By passing water through the connector and drainage tube, the connector, drainage tube, and the connection between the connector and the drainage tube are tested for leaks. However, in actual use, since the connector and drainage tube are in a state of being flushed by pressurized liquid for a long time, the connector, drainage tube, or the connection between the connector and the drainage tube is prone to leakage. At this time, the connector and drainage tube can only be replaced as a whole, which not only increases the patient's pain and affects the patient's physical and mental health, but also increases the risk of surgery. Summary of the invention

[0004] In view of this, the present invention provides a testing device and a testing method to make up for the fact that the existing detection methods do not meet the actual long-term use requirements. The existing detection methods simply test the sealing of the joint, the sealing of the drainage tube, and the connection strength between the joint and the drainage tube, resulting in the joint and the drainage tube being unable to withstand long-term liquid erosion and causing leakage during actual use.

[0005] In a first aspect, the present invention provides a testing device, comprising:

[0006] A liquid supply unit, used for containing liquid, the liquid supply unit comprising a liquid inlet, a liquid outlet and a pressure equalizing port, the height of the pressure equalizing port is higher than the height of the liquid outlet, and the pressure equalizing port is connected to the outside;

[0007] A liquid inlet pipe, one end of which is connected to the liquid inlet and the other end of which is connected to a liquid source;

[0008] A liquid outlet pipe has one end connected to the liquid outlet port and the other end used to connect to the pipe to be tested. The liquid inlet volume of the liquid inlet pipe is not less than the liquid outlet volume of the liquid outlet pipe, so that the liquid level of the liquid supply unit is maintained at the pressure equalizing port.

[0009] Beneficial effect: The liquid source provides liquid to the liquid supply unit through the liquid inlet pipe, and the liquid outlet is in a closed state at the initial stage of liquid inlet. When the liquid level in the liquid supply unit rises to the position of the equalizing pressure port, since the liquid inlet amount of the liquid inlet pipe is not less than the liquid outlet amount of the liquid outlet pipe, based on this, the liquid level in the liquid supply unit is not lower than the equalizing pressure port, and when the liquid level in the liquid supply unit is higher than the equalizing pressure port, the liquid will be discharged to the liquid supply unit through the equalizing pressure port to maintain the stability of the liquid level in the liquid supply unit, so that the device can restore the pressure value of the actual application scenario of the pipe to be tested, such as the pressure value can be equal to the pressure value in the bile duct, and the pressure to which the pipe to be tested is subjected during the test is always the pressure to which it is subjected in the actual application scenario, while ensuring the continuity of the liquid flow in the pipe to be tested, thereby achieving the technical effect of improving the reliability of the quality inspection of the pipe to be tested.

[0010] In an optional embodiment, the testing device comprises:

[0011] a first pipe, one end of which is connected to the pressure equalizing port, and the inner diameter of the first pipe is not less than the inner diameter of the liquid inlet pipe;

[0012] And / or, the pipe to be tested includes a pipe to be tested and a joint to be tested that are fixedly connected, and the inner diameter of the pipe to be tested is smaller than the inner diameter of the liquid inlet pipe.

[0013] Beneficial effect: By limiting the inner diameter of the first pipe to be not less than the inner diameter of the liquid inlet pipe, when the liquid level in the liquid supply unit is higher than the height of the pressure equalizing port, the liquid can quickly flow out through the first pipe, so that the liquid level in the liquid supply unit can be maintained at the position of the pressure equalizing port, so as to ensure the stability of the pressure on the pipe to be tested, thereby achieving the technical effect of improving the reliability of the test results of the pipe to be tested;

[0014] By limiting the inner diameter of the pipeline to be tested to be smaller than the inner diameter of the liquid inlet pipe, the flow rates of the pipeline to be tested and the liquid outlet pipe are made smaller than the flow rate of the liquid inlet pipe. This can not only ensure that during the detection process, the liquid level in the liquid supply unit is always not lower than the liquid level at the pressure equalizing port, so as to achieve the technical effect of improving the stability of the pressure on the pipe to be tested, but also ensure that there is always flowing liquid in the pipe to be tested, so as to simulate the use scenario of the pipe to be tested, thereby improving the reliability of the detection results.

[0015] In an optional embodiment, the liquid outlet pipe comprises:

[0016] A second pipe, one end of which is connected to the liquid outlet, the other end of which is connected to one end of the pipe to be tested, and the other end of which is connected to one end of the joint to be tested;

[0017] One end of the third pipeline is connected to the other end of the joint to be tested.

[0018] In an optional embodiment, one end of the pipeline to be tested away from the joint to be tested is connected to a first connecting piece;

[0019] The liquid outlet pipe comprises:

[0020] The second connecting piece has one end connected to the second pipeline and the other end detachably connected to the first connecting piece.

[0021] Beneficial effect: The pipe fitting to be tested is connected to the second pipeline by means of the insertion and fixation of the first connecting piece and the second connecting piece, thereby avoiding the presence of a gap between the second pipeline and the pipe fitting to be tested when directly inserted and fixed, thereby improving the sealing of the connection between the pipe fitting to be tested and the first connecting piece, thereby achieving the technical effect of improving the reliability of the test of the test device.

[0022] In an optional embodiment, the testing device comprises:

[0023] A liquid storage unit is provided with the liquid source, the liquid storage unit is connected to the other end of the third pipeline, and / or, the liquid storage unit is connected to the other end of the liquid inlet pipe, and / or, the liquid storage unit is connected to the other end of the first pipeline.

[0024] Beneficial effect: the liquid flowing out through the third pipe and the first pipe can be collected in the liquid storage unit. At the same time, the liquid in the liquid storage unit can enter the liquid supply unit through the liquid inlet pipe, which not only realizes the circulating supply of liquid in the test device without manual supervision, thereby achieving the technical effect of improving the simplicity of testing the pipe to be tested, but also allows liquid to continuously circulate in the pipe to be tested, making the test environment of the pipe to be tested close to the actual application scenario, thereby achieving the technical effect of improving the test accuracy.

[0025] In an optional embodiment, the testing device comprises:

[0026] A heating unit, disposed in the liquid storage unit;

[0027] And / or, a collecting unit is arranged below the pipe to be tested.

[0028] Beneficial effect: The heating unit can make the flow temperature of the liquid in the test device close to the human body temperature, improve the accuracy of the simulation scene of the pipe to be tested, and thus achieve the technical effect of improving the reliability of the test results. When liquid leaks at the pipe to be tested, the collection unit can collect the leaked liquid, which can improve the intuitiveness of the quality test results of the pipe to be tested.

[0029] In an optional embodiment, the testing device comprises:

[0030] An adjusting unit is connected to the liquid supply unit, and is used to drive the liquid supply unit to move in a vertical direction.

[0031] Beneficial effect: By adjusting the unit, the pressure given to the pipe to be tested by the liquid level at the pressure equalizing port in the liquid supply unit can be equal to the pressure borne by the pipe to be tested in the actual application scenario, thereby achieving the convenience of improving the height adjustment of the liquid supply unit.

[0032] In an optional implementation, the adjustment unit includes:

[0033] Frame;

[0034] A driving member, disposed on the frame;

[0035] The transmission member is connected with the driving member and the liquid supply unit, and is used for driving the liquid supply unit to perform linear motion along a vertical direction under the drive of the driving member.

[0036] In an optional embodiment, the driving member is a rotating member, the length of which is arranged along the vertical direction, and the rotating member is rotatably connected to the frame;

[0037] The transmission member is a sliding member, which is sleeved on the rotating member. The sliding member is fixedly connected to the liquid supply unit, and the sliding member moves linearly along the vertical direction as the rotating member rotates.

[0038] Beneficial effect: The rotation of the driving member drives the linear movement of the transmission member, which further drives the liquid supply unit to move linearly in the vertical direction to adjust the height of the liquid supply unit relative to the pipe to be tested. The liquid level height in the liquid supply unit can be adjusted to adjust the liquid pressure in the pipe to be tested.

[0039] In a second aspect, the present invention further provides a testing method, using the above-mentioned testing device to test the pipe to be tested; the testing method comprises:

[0040] closing the liquid outlet;

[0041] Passing liquid into the liquid supply unit until the liquid level of the liquid supply unit is located at the pressure equalizing port;

[0042] Open the liquid outlet to continuously pass liquid into the liquid supply unit, and maintain the liquid level of the liquid supply unit at the pressure equalizing port;

[0043] Detect whether the pipe to be tested is leaking.

[0044] Beneficial effect: By closing the liquid outlet and passing water into the liquid supply unit, the liquid level in the liquid supply unit is equal to the height of the pressure equalizing port, and the liquid surface pressure on the pipe to be tested is equal to the pressure in the actual use scenario, and then the liquid outlet is opened to test the sealing and reliability of the pipe to be tested. At the same time, since the inner diameter of the pipe to be tested is smaller than the inner diameter of the liquid inlet pipe, the water flowing out of the pipe to be tested is smaller than the water entering the liquid supply unit through the liquid inlet pipe, that is, the liquid level in the liquid supply unit can be maintained at a position not lower than the pressure equalizing port. When the liquid level in the liquid supply unit is higher than the pressure equalizing port, the water in the liquid supply unit flows out through the pressure equalizing port, so that the liquid level in the liquid supply unit is maintained at the position of the pressure equalizing port, so as to achieve the stability of the pressure on the pipe to be tested, thereby achieving the technical effect of improving the reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 is a schematic structural diagram of the testing device of this embodiment;

[0047] Figure 2 is a schematic structural diagram of a liquid supply unit in the testing device of this embodiment;

[0048] Figure 3 Schematic diagram of the structure of the pipe to be tested in the testing device of this embodiment.

[0049] Description of reference numerals:

[0050] 1. Liquid supply unit; 101. Liquid inlet; 102. Liquid outlet; 103. Pressure equalization port;

[0051] 2. Adjustment unit; 201. Rotating member; 202. Sliding member;

[0052] 3. Liquid inlet pipe;

[0053] 4. liquid outlet pipe; 401. second pipeline; 402. third pipeline; 403. second connecting piece;

[0054] 5. Pipe fitting to be tested; 501. Pipe to be tested; 502. Joint to be tested; 503. First connecting piece;

[0055] 6. Liquid storage unit; 7. First pipeline. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0057] Combine the following Figures 1 to 3 , describing an embodiment of the present invention.

[0058] According to an embodiment of the present invention, on the one hand, a testing device is provided, comprising:

[0059] The liquid supply unit 1 is used to contain liquid. The liquid supply unit 1 includes a liquid inlet 101, a liquid outlet 102 and a pressure equalizing port 103. The height of the pressure equalizing port 103 is higher than that of the liquid outlet 102. The pressure equalizing port 103 is connected to the outside.

[0060] A liquid inlet pipe 3, one end of which is connected to the liquid inlet 101, and the other end of which is used to be connected to the liquid source;

[0061] The liquid outlet pipe 4 has one end connected to the liquid outlet 102 and the other end used to connect to the pipe 5 to be tested. The liquid inlet amount of the liquid inlet pipe 3 is not less than the liquid outlet amount of the liquid outlet pipe 4 so that the liquid level of the liquid supply unit 1 is maintained at the pressure equalization port 103.

[0062] In the testing device of the present embodiment, the liquid source supplies liquid to the liquid supply unit 1 through the liquid inlet pipe 3. At the initial stage of liquid inlet, the liquid outlet 102 may be in a closed state. When the liquid level in the liquid supply unit 1 rises to the position of the pressure equalizing port 103, since the liquid inlet amount of the liquid inlet pipe 3 is not less than the liquid outlet amount of the liquid outlet pipe 4, based on this, the liquid level in the liquid supply unit 1 is not lower than the pressure equalizing port 103. When the liquid level in the liquid supply unit 1 is higher than the pressure equalizing port 103, the liquid will be discharged through the pressure equalizing port 103 to maintain the stability of the liquid level in the liquid supply unit 1, so that the testing device can restore the pressure value of the actual application scenario of the pipe fitting 5 to be tested, such as the pressure value can be equal to the pressure value in the bile duct, and the pressure to which the pipe fitting 5 to be tested is subjected during the test is always the pressure value of the actual application scenario, while ensuring the continuity of the liquid flow in the pipe fitting 5 to be tested, thereby achieving the technical effect of improving the reliability of the quality inspection of the pipe fitting 5 to be tested.

[0063] Of course, in other embodiments, the testing device can also be applied to the performance testing of other long-term indwelling products, such as the testing of intravenous indwelling catheters.

[0064] In addition, in this embodiment, a switch valve is provided at the connection between the liquid outlet pipe 4 and the liquid outlet 102, and the opening and closing of the liquid outlet 102 are achieved by adjusting the opening and closing of the switch valve.

[0065] Of course, in other embodiments, the liquid outlet 102 may be blocked by adding a blocking object at the liquid outlet 102 before the liquid is introduced. For example, the blocking object is a non-water-absorbing object such as a rubber stopper.

[0066] In addition, in this embodiment, the testing device can be used in the scene of designing the pipe fitting 5 to be tested, so as to simulate the use scene of the pipe fitting 5 to be tested in the early stage of design to test the pipe fitting 5 to be tested, so as to test the practicability of the product in the early stage of design. In other embodiments, the testing device can also detect the quality of the pipe fitting 5 to be tested after leaving the factory.

[0067] In this embodiment, the liquid in the test device can be water. Of course, in other embodiments, the liquid can also be artificial bile to improve the authenticity of the simulation of the use scenario of the tested pipe 5. Compared with other embodiments, this embodiment uses water as the test liquid, which can reduce the use cost of the test device.

[0068] In addition, in this embodiment, the pipe fitting 5 to be tested includes a pipe to be tested 501 and a joint to be tested 502 that are fixedly connected. Since the pipe to be tested 501 and the joint to be tested 502 are used in conjunction with each other, the joint to be tested 502 is connected to the pipe to be tested 501 as a whole for testing to improve the reliability of the test result.

[0069] Of course, in other embodiments, the pipe component 5 to be tested may be only the pipe 501 to be tested, or only the joint 502 to be tested.

[0070] In addition, combined Figure 1 As shown, in this embodiment, the testing device includes:

[0071] One end of the first pipe 7 is connected to the pressure equalizing port 103 , and the inner diameter of the first pipe 7 is greater than the inner diameter of the liquid inlet pipe 3 .

[0072] Based on this, when the liquid level in the liquid supply unit 1 is higher than the height of the pressure equalizing port 103, the liquid can quickly flow out through the first pipe 7, so that the liquid level in the liquid supply unit 1 can be maintained at the position of the pressure equalizing port 103, so as to ensure the stability of the pressure on the pipe fitting 5 to be tested, thereby achieving the technical effect of improving the reliability of the test results of the pipe fitting 5 to be tested.

[0073] Furthermore, in this embodiment, the inner diameter of the pipeline to be tested 501 is smaller than the inner diameter of the liquid inlet pipe 3. Based on this, the flow rate of the pipeline to be tested 501 and the liquid outlet pipe 4 is smaller than the flow rate of the liquid inlet pipe 3, which can not only ensure that during the detection process, the liquid level in the liquid supply unit 1 is always not lower than the liquid level of the pressure equalizing port 103, so as to achieve the technical effect of improving the stability of the pressure on the pipe to be tested 5, but also ensure that there is always flowing liquid in the pipe to be tested 5, so as to simulate the use scenario of the pipe to be tested 5, thereby improving the reliability of the detection result.

[0074] Of course, in other embodiments, the inner diameter of the first pipe 7 may be equal to the inner diameter of the liquid inlet pipe 3 .

[0075] In other embodiments, only the inner diameter of the first pipeline 7 may be not less than the inner diameter of the liquid inlet pipe 3, or only the inner diameter of the pipeline to be tested 501 may be less than the inner diameter of the liquid inlet pipe 3. In this case, flow valves may be provided on the liquid inlet pipe 3, the liquid outlet pipe 4 and the first pipeline 7, and the three flow valves may be adjusted so that the liquid inflow of the liquid inlet pipe 3 is not less than the liquid outflow of the liquid outlet pipe 4, and at the same time, the first pipeline 7 can quickly discharge the liquid above the pressure equalizing port 103, so that the liquid level is maintained at the pressure equalizing port 103.

[0076] In addition, combined Figure 1 As shown, in this embodiment, the liquid outlet pipe 4 includes:

[0077] A second pipe 401, one end of which is connected to the liquid outlet 102, the other end of which is connected to one end of the pipe to be tested 501, and the other end of which is connected to one end of the joint to be tested 502;

[0078] One end of the third pipe 402 is connected to the other end of the joint to be tested 502 .

[0079] Based on this, the connector 502 to be tested can be connected to the liquid outlet pipe 4 .

[0080] Among them, a joint is provided on the third pipe 402, and the joint is inserted and fixed with the joint to be tested 502 through the joint. There is no need for the third pipe 402 to be directly inserted into the joint to be tested 502, thereby avoiding the existence of a connection gap between the third pipe 402 and the joint to be tested 502, thereby achieving the technical effect of improving the connection sealing between the third pipe 402 and the joint to be tested 502.

[0081] As a convertible implementation, the third pipe 402 can also be directly inserted and connected in the joint to be tested 502, wherein the inner diameter of the third pipe 402 is 3.5 mm, and the inner diameter of the joint to be tested 502 is 4 mm, and the stability of the connection position between the third pipe 402 and the joint to be tested 502 is achieved by a cable tie.

[0082] Of course, in other embodiments, the number of pipes of the liquid outlet pipe 4 may be adjusted according to different designs of the liquid outlet pipe 4 .

[0083] In this embodiment, the first pipe 7, the liquid outlet pipe 4, the liquid inlet pipe 3, the second pipe 401 and the third pipe 402 are all silicone pipes. Of course, in other embodiments, the materials of the first pipe 7, the liquid inlet pipe 3, the liquid outlet pipe 4, the second pipe 401 and the third pipe 402 can be adjusted according to the different designs of the test device.

[0084] In addition, combined Figure 1 and Figure 3 As shown, in this embodiment, one end of the pipeline 501 to be tested away from the joint 502 to be tested is connected with a first connecting piece 503;

[0085] The liquid outlet pipe 4 comprises:

[0086] The second connecting piece 403 has one end connected to the second pipe 401 and the other end detachably connected to the first connecting piece 503 .

[0087] Based on this, the pipe fitting 5 to be tested is connected to the second pipe 401 through the insertion and fixation of the first connecting piece 503 and the second connecting piece 403, avoiding the presence of a gap between the second pipe 401 and the pipe fitting 5 to be tested, thereby improving the sealing of the connection between the pipe fitting 5 to be tested and the second pipe 401, and further achieving the technical effect of improving the reliability of the test results of the test device.

[0088] Preferably, the first connecting member 503 may also be a connector to be tested. Based on this, the test points of the connector to be tested 502 may be increased, and the accuracy of the experimental results may be further increased, thereby achieving the technical effect of improving the reliability of the test results of the connector to be tested 502.

[0089] The bonding processes between the first connecting piece 503 and the pipe to be tested 501 and between the joint to be tested 502 and the pipe to be tested 501 are the same, so that the test environments of the first connecting piece 503 and the joint to be tested 502 are the same, thereby achieving the technical effect of improving the reliability of the test results.

[0090] Furthermore, the second connecting piece 403 may be a Luer connector, which is easily available and has high sealing performance and good compatibility, and can improve the technical effect of the reliability of the test by the test device.

[0091] Of course, in other embodiments, the first connecting piece 503 and the second connecting piece 403 may also be other joints.

[0092] In addition, combined Figure 1 As shown, in this embodiment, the testing device includes:

[0093] The liquid storage unit 6 has a liquid source inside, and the liquid storage unit 6 is connected to the other end of the third pipe 402, and is also connected to the other end of the liquid inlet pipe 3 and the other end of the first pipe 7. Specifically, the third pipe 402, the liquid inlet pipe 3 and the first pipe 7 are all connected to the liquid source in the liquid storage unit 6.

[0094] Based on this, the liquid flowing out through the third pipe 402 and the first pipe 7 can enter the liquid storage unit 6 for collection. At the same time, the liquid in the liquid storage unit 6 can enter the liquid supply unit 1 through the liquid inlet pipe 3, which not only realizes the circulating supply of liquid in the testing device without the need for manual supervision, thereby achieving the technical effect of improving the simplicity of testing the joint 502 to be tested, but also liquid continuously circulates in the pipe 5 to be tested, so that the testing environment of the pipe 5 to be tested is close to the actual application scenario, so as to achieve the technical effect of improving the accuracy of the test results.

[0095] The liquid storage unit 6 is provided with a hydraulic pump, one end of which is connected to the liquid source, and the other end of which is connected to the liquid inlet pipe 3. The hydraulic pump drives the liquid in the liquid storage unit 6 to flow into the liquid supply unit 1, ensuring the continuity of the liquid circulation in the test device.

[0096] Furthermore, the height of the liquid storage unit 6 is lower than that of the liquid supply unit 1, so that the liquid in the pressure equalizing port 103 can flow into the liquid storage unit 6 under its own gravity without the need for an additional driving pump, thereby achieving the technical effect of improving the simplicity of the structure of the detection device and saving design costs.

[0097] Of course, in other embodiments, depending on the design and actual use of the test device, the liquid storage unit 6 can be connected only to the other end of the third pipe 402, or only to the other end of the liquid inlet pipe 3, or only to the other end of the first pipe 7.

[0098] In addition, in this embodiment, the testing device includes:

[0099] The heating unit is arranged in the liquid storage unit 6, based on which the flow temperature of the liquid in the test device can be made close to the human body temperature, thereby improving the accuracy of the simulation scene of the pipe 5 to be tested, thereby achieving the technical effect of improving the reliability of the test results.

[0100] The collecting unit is arranged below the pipe to be tested 5. Based on this, when liquid leaks from the pipe to be tested 5, the leaked liquid can be collected by the collecting unit, which can improve the intuitiveness of the quality inspection result of the pipe to be tested 5.

[0101] Of course, in other embodiments, depending on the design and actual use of the testing device, only the heating unit or only the collecting unit may be provided.

[0102] In other embodiments, the collecting unit may not be provided, and the pipe 5 to be tested may be placed on a table to observe whether there is liquid on the table.

[0103] In addition, in this embodiment, the testing device includes an adjustment unit 2 connected to the liquid supply unit 1, and the adjustment unit 2 is used to drive the liquid supply unit 1 to move along the liquid supply unit 1. Figure 1 The adjustment unit 2 can improve the convenience of adjusting the height of the liquid supply unit 1 .

[0104] Specifically, combined Figure 1 As shown, in this embodiment, the adjustment unit 2 includes:

[0105] Frame;

[0106] A driving member is arranged on the frame;

[0107] The transmission member is connected with the driving member and the liquid supply unit 1, and is used for driving the liquid supply unit 1 to perform linear motion along the vertical direction under the drive of the driving member.

[0108] The driving member drives the transmission member to move, and further drives the liquid supply unit 1 to move linearly in the vertical direction to adjust the height of the liquid supply unit 1 relative to the pipe 5 to be tested. The liquid level height in the liquid supply unit 1 can be adjusted to adjust the liquid pressure in the pipe 5 to be tested.

[0109] The pressure in the bile duct is generally in the range of 0.98 kPa-1.37 kPa. According to the hydrostatic pressure of 1 m being 9.8 kPa, it can be concluded that the height of the liquid level in the liquid supply unit 1 from the pipe 5 to be tested is at least 0.14 m.

[0110] Specifically, the driving member is a rotating member 201, which can be a ball screw. Figure 1 As shown, the rotating member 201 is arranged in a vertical direction and is rotatably connected to the frame;

[0111] The transmission member is a sliding member 202 , which can be a lead screw nut, sleeved on the rotating member 201 and threadedly connected to the rotating member 201 . The sliding member 202 is fixedly connected to the liquid supply unit 1 , and the sliding member 202 can perform linear motion in the vertical direction through the rotation of the rotating member 201 .

[0112] Furthermore, in this embodiment, the driving member is connected to the rotating shaft of the motor, and the motor is used to provide the driving member with rotational power.

[0113] Of course, in other embodiments, the driving member may also be connected to the handle, and the handle may be manually driven to rotate to further drive the driving member to rotate.

[0114] In other embodiments, the driving member may be a hydraulic cylinder, and the transmission member may be a telescopic rod. The driving member drives the telescopic rod to extend and retract, thereby achieving the technical effect of adjusting the height of the liquid supply unit 1 relative to the pipe 5 to be tested.

[0115] Of course, in other embodiments, the pressure on the pipe 5 to be tested can be adjusted by replacing the liquid supply unit 1 with a pressure equalizing port 103 at different heights.

[0116] In addition, in this embodiment, the liquid inlet pipe 3 and the liquid outlet pipe 4 are both detachably connected to the frame through clamps, thereby improving the stability of the positions of the liquid inlet pipe 3 and the liquid outlet pipe 4.

[0117] In addition, combined Figure 1 As shown, in this embodiment, the liquid outlet 102 is disposed on the bottom surface of the liquid supply unit 1 , and the height of the liquid inlet 101 is disposed between the liquid outlet 102 and the pressure equalizing port 103 .

[0118] Of course, in other embodiments, the heights of the liquid inlet 101 , the liquid outlet 102 and the pressure equalizing port 103 may be adjusted as needed.

[0119] According to an embodiment of the present invention, on the other hand, a testing method is further provided. The testing device of this embodiment is used to test the pipe 5 to be tested. The testing method includes:

[0120] The liquid outlet 102 is closed so that the liquid cannot flow out into the liquid supply unit 1 through the liquid outlet 102 .

[0121] Liquid is passed into the liquid supply unit 1 until the liquid level of the liquid supply unit 1 is located at the pressure equalization port 103;

[0122] The liquid outlet 102 is opened to continuously flow liquid into the liquid supply unit 1, and the liquid level of the liquid supply unit 1 is maintained at the height of the pressure equalizing port 103;

[0123] Check whether the pipe 5 to be tested is leaking.

[0124] By closing the liquid outlet 102 and passing water into the liquid supply unit 1, the liquid level in the liquid supply unit 1 is equal to the height of the equalizing port 103, and the liquid surface pressure on the pipe 5 to be tested is equal to the pressure in the actual use scenario, and then the liquid outlet 102 is opened to test the sealing and reliability of the pipe 5 to be tested. At the same time, since the inner diameter of the pipe 501 to be tested is smaller than the inner diameter of the liquid inlet pipe 3, the water flowing out of the pipe 501 to be tested is smaller than the water entering the liquid supply unit 1 through the liquid inlet pipe 3, that is, the liquid level in the liquid supply unit 1 can be maintained at a position not lower than the equalizing port 103. When the liquid level in the liquid supply unit 1 is higher than the equalizing port 103, the water in the liquid supply unit 1 flows out through the equalizing port 103, so that the liquid level in the liquid supply unit 1 is maintained at the position of the equalizing port 103, so as to achieve the stability of the pressure on the pipe 5 to be tested, thereby achieving the technical effect of improving the reliability of the test results.

[0125] Furthermore, the liquid is passed into the liquid supply unit 1 specifically including: the liquid storage unit 6 drives water into the liquid inlet pipe 3 through the hydraulic pump inside the liquid storage unit 6 to provide water to the liquid supply unit 1. The water flowing out of the liquid outlet pipe 4 and the first pipe 7 can also flow back into the liquid storage unit 6, realizing automatic circulation without manual detection, thereby improving the simplicity of the test.

[0126] Furthermore, before the liquid storage unit 6 drives water into the liquid inlet pipe 3 through its internal hydraulic pump, the testing method also includes: turning on the heating unit in the liquid storage unit 6, and the heating unit can heat the water to a temperature close to human body temperature, so as to improve the accuracy of the simulation scene of the pipe 5 to be tested.

[0127] Before detecting whether the tested tube 5 is leaking, the testing method in this embodiment further includes: adjusting the height of the liquid supply unit 1 so that the liquid surface pressure of the tested tube 5 is adapted to the pressure range in the bile duct. Specifically, the driving member can be driven to move linearly along the length direction of the driving member by the rotation of the driving member to adjust the height of the liquid supply unit 1. Figure 1 The height shown enables the liquid surface pressure of the pipe 5 to be tested to be adapted to the pressure range in the bile duct, so that the pipe 5 to be tested can be tested at various pressure values, thereby improving the reliability of the test results.

[0128] Detecting whether the pipe 5 to be tested is leaking specifically includes: observing whether there is water in the collection unit to determine whether the pipe 5 to be tested is leaking. Among them, it can be observed whether there is water in the collection unit within a preset time to determine whether the pipe 5 to be tested is leaking. Specifically, in actual use, in order to ensure the accuracy of the detection, the pipe 5 to be tested can be connected to the test device for continuous monitoring for 30 days, for example, to determine whether the pipe 5 to be tested is leaking. As a convertible implementation, it can also be that the preset time can be adjusted according to the actual test needs, and no excessive restrictions are made here.

[0129] Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A testing device, characterized in that: include: A liquid supply unit (1) for containing liquid, the liquid supply unit (1) comprising a liquid inlet (101), a liquid outlet (102) and a pressure equalizing port (103), the height of the pressure equalizing port (103) being higher than the height of the liquid outlet (102), and the pressure equalizing port (103) being in communication with the outside; a liquid inlet pipe (3), one end of which is connected to the liquid inlet (101) and the other end of which is used to be connected to a liquid source; A liquid outlet pipe (4) has one end connected to the liquid outlet (102) and the other end used to connect to the pipe to be tested (5). The liquid inlet volume of the liquid inlet pipe (3) is not less than the liquid outlet volume of the liquid outlet pipe (4), so that the liquid level of the liquid supply unit (1) is maintained at the pressure equalizing port (103).

2. The testing device according to claim 1, characterized in that: The testing device comprises: A first pipe (7), one end of which is in communication with the pressure equalizing port (103); the inner diameter of the first pipe (7) is not less than the inner diameter of the liquid inlet pipe (3); And / or, the pipe member to be tested (5) comprises a pipe to be tested (501) and a joint to be tested (502) which are fixedly connected, and the inner diameter of the pipe to be tested (501) is smaller than the inner diameter of the liquid inlet pipe (3).

3. The testing device according to claim 2, characterized in that: The liquid outlet pipe (4) comprises: A second pipe (401), one end of which is in communication with the liquid outlet (102), the other end of which is in communication with one end of the pipe to be tested (501), and the other end of which is in communication with one end of the joint to be tested (502); One end of the third pipe (402) is connected to the other end of the joint to be tested (502).

4. The testing device according to claim 3, characterized in that: One end of the pipeline to be tested (501) away from the joint to be tested (502) is connected to a first connecting piece (503); The liquid outlet pipe (4) comprises: The second connecting piece (403) has one end connected to the second pipe (401) and the other end detachably connected to the first connecting piece (503).

5. The testing device according to claim 3, characterized in that: The testing device comprises: A liquid storage unit (6) is provided with the liquid source, the liquid storage unit (6) is connected to the other end of the third pipeline (402), and / or the liquid storage unit (6) is connected to the other end of the liquid inlet pipe (3), and / or the liquid storage unit (6) is connected to the other end of the first pipeline (7).

6. The testing device according to claim 5, characterized in that: The testing device comprises: A heating unit, arranged in the liquid storage unit (6); And / or, a collecting unit is arranged below the pipe (5) to be tested.

7. The testing device according to any one of claims 1 to 6, characterized in that: The testing device comprises: An adjustment unit (2) is connected to the liquid supply unit (1), and the adjustment unit (2) is used to drive the liquid supply unit (1) to move in a vertical direction.

8. The testing device according to claim 7, characterized in that: The adjustment unit (2) comprises: Frame; A driving member, disposed on the frame; A transmission member is connected to the driving member and the liquid supply unit (1), and is used to drive the liquid supply unit (1) to move linearly in a vertical direction under the drive of the driving member.

9. The testing device according to claim 8, characterized in that: The driving member is a rotating member (201), the length of which is arranged along the vertical direction, and the rotating member (201) is rotatably connected to the frame; The transmission member is a sliding member (202) which is sleeved on the rotating member (201). The sliding member (202) is fixedly connected to the liquid supply unit (1). The sliding member (202) moves linearly in a vertical direction as the rotating member (201) rotates.

10. A testing method, characterized in that: The testing device according to any one of claims 1 to 9 is used to test the pipe (5) to be tested; the testing method comprises: Closing the liquid outlet (102); Passing liquid into the liquid supply unit (1) until the liquid level of the liquid supply unit (1) is located at the pressure equalizing port (103); The liquid outlet (102) is opened to continuously pass liquid into the liquid supply unit (1), and the liquid level of the liquid supply unit (1) is maintained at the pressure equalizing port (103); Detect whether the pipe (5) to be tested is leaking.

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