A tank truck airtightness testing device

Abstract

This utility model discloses a tank truck airtightness testing device, relating to the field of tank truck inspection. The device includes a testing unit, in which an air supply pipe is located on one side of a pressure pump and connected to the pump, with one end of the pipe connected to the tank body; a three-way valve is located inside the air supply pipe; and a comparison tank is located at one end of the three-way valve and connected to the air supply pipe via the three-way valve. This tank truck airtightness testing device, by setting up a comparison tank, ensures that the comparison tank and the tank body are in the same external environment during the testing process and are affected by the same external factors such as temperature. By monitoring the air pressure changes of the comparison tank and the tank body using a first pressure gauge and a second pressure gauge respectively, and comparing the air pressure changes of the two, interference from air pressure fluctuations caused by external environmental factors such as temperature can be effectively eliminated, reducing the probability of misjudgment or missed detection, and improving the accuracy and reliability of tank truck airtightness testing.

Description

Technical Field

[0001] This utility model relates to the field of tank truck testing technology, specifically a tank truck sealing testing device. Background Technology

[0002] Currently, tank truck sealing testing devices are crucial equipment for ensuring the safe operation of tank trucks. A common testing method involves injecting gas into the tank and then assessing the tank truck's sealing performance by monitoring changes in internal pressure. When a leak occurs, the internal pressure drops, indicating a problem with the tank's seal.

[0003] However, the tank is not in a completely isolated environment and is affected by changes in the external environment, which can cause changes in the internal air pressure, thus interfering with the judgment of the tank's true sealing performance.

[0004] The reason for this problem is that when the tank is exposed to the outdoors, sunlight and significant changes in ambient temperature cause the gas inside the tank to expand and contract significantly, resulting in substantial pressure fluctuations. This makes it difficult for inspectors to accurately distinguish whether the pressure change is caused by temperature effects or by an actual leak in the tank. This interference is particularly pronounced in seasons or regions with large temperature differences, easily leading to misjudgments or missed detections, posing a threat to the safe operation of tank trucks. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a tank truck airtightness detection device, which solves the problem that existing detection methods mentioned in the background are easily affected by external environmental factors such as temperature, leading to misjudgment or missed detection.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a tank truck airtightness testing device, comprising a testing unit, wherein the testing unit includes a pneumatic pump, a gas delivery pipe, a three-way valve and a comparison tank;

[0007] The gas delivery pipe is located on one side of the air pressure pump and is connected to the air pressure pump. One end of the gas delivery pipe is connected to a tank. The three-way valve is located inside the gas delivery pipe. The comparison tank is located at one end of the three-way valve and is connected to the gas delivery pipe through the three-way valve.

[0008] Preferably, a first flange is provided between the air pump and the air supply pipe, and the air pump is connected to the air supply pipe through the first flange.

[0009] Preferably, a ball valve is provided on the gas pipeline.

[0010] Preferably, a conduit is fixedly mounted at the end of the comparison tank, and a second flange is provided between the conduit and the three-way valve, and the conduit is connected to the three-way valve through the second flange.

[0011] Preferably, a first pressure gauge is fixedly mounted on the top of the comparison tank.

[0012] Preferably, a connector is fixedly mounted at the end of the gas pipeline, and a third flange is provided between the connector and the tank body, and the connector is connected to the tank body through the third flange.

[0013] Preferably, a second pressure gauge is fixedly mounted on the top of the connector, and a low-pressure alarm is provided on one side of the second pressure gauge, and the second pressure gauge is connected to the low-pressure alarm.

[0014] Its beneficial effects are as follows:

[0015] This tank truck sealing test device uses a comparison tank. During the test, the comparison tank and the main tank are exposed to the same external environment and are affected by the same external factors such as temperature. By monitoring the air pressure changes in the comparison tank and the main tank using a first and a second pressure gauge respectively, and comparing the air pressure changes of the two, interference from air pressure fluctuations caused by external environmental factors such as temperature can be effectively eliminated. This accurately determines whether there is a real leak in the tank, reduces the probability of false positives or missed detections, improves the accuracy and reliability of tank truck sealing test, and ensures the safe operation of tank trucks. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a side view of the detection unit of this utility model;

[0019] Figure 3 This is a schematic diagram of the comparative tank of this utility model.

[0020] In the diagram: 1. Detection unit; 11. Air pump; 12. Air supply pipe; 13. Three-way valve; 14. Comparison tank; 15. First flange; 16. Ball valve; 17. Conduit; 18. Second flange; 19. First pressure gauge; 110. Connector; 111. Second pressure gauge; 112. Low-pressure alarm. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0023] This utility model discloses a tank truck airtightness testing device, according to the attached... Figure 1-2 As shown, it includes a detection unit 1, which includes a pneumatic pump 11, a gas delivery pipe 12, a three-way valve 13, and a comparison tank 14;

[0024] The gas supply pipe 12 is located on one side of the air pressure pump 11 and is connected to the air pressure pump 11. One end of the gas supply pipe 12 is connected to the tank. The three-way valve 13 is located inside the gas supply pipe 12. The comparison tank 14 is located at one end of the three-way valve 13 and is connected to the gas supply pipe 12 through the three-way valve 13.

[0025] A first flange 15 is provided between the air pressure pump 11 and the air supply pipe 12, and the air pressure pump 11 is connected to the air supply pipe 12 through the first flange 15. A ball valve 16 is provided on the air supply pipe 12, and a connector 110 is fixedly mounted at the end of the air supply pipe 12. A third flange is provided between the connector 110 and the tank body, and the connector 110 is connected to the tank body through the third flange.

[0026] In this embodiment, during testing, the connector 110 is first connected to the tank body via the third flange to ensure a tight connection. The ball valve 16 is opened, and the air pump 11 is started. The air pump 11 injects gas into the tank body through the air supply pipe 12. The air pressure in the tank body is observed using the second pressure gauge 111. When the preset air pressure value is reached, the three-way valve 13 is turned, injecting gas into the control tank 14. The air pressure inside the control tank 14 is determined using the first pressure gauge 19. If the air pressure matches the air pressure inside the tank body, the air pump 11 and the ball valve 16 are closed. During subsequent testing, the changes in the readings of the first pressure gauge 19 and the second pressure gauge 111 are observed in real time. Since the control tank 14 and the tank body are in the same external environment, if only affected by external factors such as temperature, the air pressure change trends of the two should be basically the same. When the reading of the second pressure gauge 111 drops significantly more than the reading of the first pressure gauge 19, and the reading of the second pressure gauge 111 is lower than the set value, the low-pressure alarm 112 will sound an alarm, indicating that there is a leak in the tank; if the trends of the two readings are basically the same, it indicates that the tank is well sealed.

[0027] According to the appendix Figure 1 , 3 As shown, further, it includes a detection unit 1, which includes a pneumatic pump 11, a gas delivery pipe 12, a three-way valve 13, and a comparison tank 14;

[0028] The gas supply pipe 12 is located on one side of the air pressure pump 11 and is connected to the air pressure pump 11. One end of the gas supply pipe 12 is connected to the tank. The three-way valve 13 is located inside the gas supply pipe 12. The comparison tank 14 is located at one end of the three-way valve 13 and is connected to the gas supply pipe 12 through the three-way valve 13.

[0029] A conduit 17 is fixedly mounted at the end of the comparison tank 14. A second flange 18 is provided between the conduit 17 and the three-way valve 13, and the conduit 17 communicates with the three-way valve 13 through the second flange 18. A first pressure gauge 19 is fixedly mounted at the top of the comparison tank 14, and a second pressure gauge 111 is fixedly mounted at the top of the connector 110. A low-pressure alarm 112 is provided on one side of the second pressure gauge 111, and the second pressure gauge 111 is connected to the low-pressure alarm 112.

[0030] In this embodiment, the low-pressure alarm component 112 is equipped with a pressure sensing module and an alarm triggering module. The pressure sensing module is connected to the second pressure gauge 111 and can receive the tank pressure data transmitted from the second pressure gauge 111 in real time. Before using the device, the operator can set a pressure threshold through the adjustment component of the low-pressure alarm component 112 according to the testing requirements and the characteristics of the tank. This threshold is usually determined based on the lowest allowable pressure value under normal sealing conditions of the tank. When the pressure data received by the pressure sensing module is lower than the preset threshold, it will immediately send a signal to the alarm triggering module. After receiving the signal, the alarm triggering module will activate the internal alarm device, which is an audible alarm that emits a piercing buzzing sound; reminding the testing personnel that there is a leak in the tank and that it needs to be checked and dealt with in a timely manner.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tank truck airtightness testing device, comprising a testing unit (1), characterized in that, The detection unit (1) includes: Air pressure pump (11); Gas delivery pipe (12) is installed on one side of the air pressure pump (11). The gas delivery pipe (12) is connected to the air pressure pump (11), and one end of the gas delivery pipe (12) is connected to the tank. A three-way valve (13) is installed inside the gas pipeline (12); A comparison tank (14) is located at one end of a three-way valve (13), and the comparison tank (14) is connected to the gas supply pipe (12) through the three-way valve (13).

2. The tank truck airtightness testing device according to claim 1, characterized in that, A first flange (15) is provided between the air pump (11) and the air supply pipe (12), and the air pump (11) is connected to the air supply pipe (12) through the first flange (15).

3. The tank truck airtightness testing device according to claim 1, characterized in that, A ball valve (16) is installed on the gas pipeline (12).

4. The tank truck airtightness testing device according to claim 1, characterized in that, The end of the comparison tank (14) is fixedly equipped with a conduit (17), and a second flange (18) is provided between the conduit (17) and the three-way valve (13). The conduit (17) is connected to the three-way valve (13) through the second flange (18).

5. The tank truck airtightness testing device according to claim 1, characterized in that, The top of the comparison tank (14) is fixedly equipped with a first pressure gauge (19).

6. The tank truck airtightness testing device according to claim 1, characterized in that, The gas pipeline (12) is fixedly equipped with a connector (110) at its end. A third flange is provided between the connector (110) and the tank body. The connector (110) is connected to the tank body through the third flange.

7. The tank truck airtightness testing device according to claim 6, characterized in that, A second pressure gauge (111) is fixedly mounted on the top of the connector (110), and a low-pressure alarm element (112) is provided on one side of the second pressure gauge (111). The second pressure gauge (111) is connected to the low-pressure alarm element (112).

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