Pipeline noise eliminating device and testing device of tank car storage tank

Abstract

The utility model relates to a pipeline noise eliminating device and a testing device of a tank car storage tank. The pipeline noise eliminating device comprises a vacuum box, a vacuumizing pipeline and a vacuum valve. The vacuum box is of a hollow sealing structure and is used for surrounding the outside of a test station pipeline of the storage tank. A through hole is formed in the wall of the vacuum box, and the end part, communicated with the storage tank, of the test station pipeline penetrates through the through hole and is hermetically connected with the wall of the vacuum box. One end of the vacuumizing pipeline communicates with the interior of the vacuum box, and the other end of the vacuumizing pipeline communicates with the vacuum pump. And the vacuum valve is arranged on the vacuumizing pipeline and is used for controlling the opening and closing of the vacuumizing pipeline. The test station pipeline is integrally surrounded by the vacuum box, and the vacuum box is kept in a vacuum state, so that noise generated by the test station pipeline cannot be transmitted outwards. Therefore, the working noise at the pipeline of the test station is effectively eliminated, the influence of the noise on the surrounding environment is avoided, and the safe labor of operators is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of tank truck storage tank testing technology, and in particular to a pipeline noise elimination device and a testing device for tank truck storage tanks. Background Technology

[0002] In industries such as chemical, petroleum, and gas, relevant national standards, industry specifications, and safety regulations have strict requirements on the quality and performance of tank truck storage tanks. These requirements mandate that tank truck storage tanks undergo tests such as air pressure, airtightness, vacuuming, and replacement to meet the corresponding qualification standards.

[0003] Currently, when tank truck storage tanks undergo various tests at the work station, different gases need to be introduced into the tanks through pipelines, and the gases inside the tanks need to be discharged or extracted through pipelines. Due to the gas flow inside the pipelines and pipeline resonance, the pipelines are prone to generating significant noise, which affects the normal work of the test operators. Utility Model Content

[0004] One objective of this invention is to overcome the shortcomings of existing technologies and provide a pipe noise reduction device. To solve the aforementioned technical problems, this invention adopts the following technical solution:

[0005] A pipe noise cancellation device, comprising:

[0006] Vacuum chamber, a hollow and sealed structure, is used to surround the test station pipeline installed in the storage tank. The vacuum chamber wall has through holes, and the end of the test station pipeline that connects to the storage tank passes through the through holes and is sealed to the vacuum chamber wall.

[0007] The vacuum pipe has one end connected to the inside of the vacuum chamber and the other end connected to the vacuum pump.

[0008] Vacuum valves are installed on vacuum pipelines and are used to control the opening and closing of the vacuum pipeline.

[0009] In one embodiment, the pipe noise cancellation device further includes a vacuum gauge mounted on a vacuum chamber for measuring the vacuum level inside the chamber.

[0010] In one embodiment, the pipeline noise cancellation device further includes a controller electrically connected to a vacuum gauge, a vacuum valve, and a vacuum pump. The controller is used to control the operation of the vacuum valve and the vacuum pump based on the measurement results of the vacuum gauge.

[0011] In one embodiment, the vacuum chamber includes multiple panels that together enclose a box structure with a rectangular cross-section.

[0012] In one embodiment, each panel is made of steel plate, and adjacent panels are welded together.

[0013] In one embodiment, the vacuum chamber further includes a plurality of reinforcing members, each of which is fixedly connected between two adjacent chamber panels.

[0014] In one embodiment, each reinforcing member is made of angle steel, and the reinforcing members are welded to the box panel.

[0015] In one embodiment, the pipe noise elimination device further includes a support bracket disposed at the bottom of the vacuum chamber, the support bracket being used to support the vacuum chamber.

[0016] In one embodiment, the support bracket includes multiple legs fixedly connected to the bottom of the vacuum chamber, each leg being made of angle steel.

[0017] Another objective of this utility model is to provide a testing device for tank truck storage tanks, including a test station pipeline and multiple air inlet pipelines and multiple air outlet pipelines connected to the test station pipeline, as well as a pipeline noise elimination device as described in any of the above claims.

[0018] The test station pipeline is equipped with a connection joint for connecting to the tank truck storage tank, and the vacuum box is surrounded and set outside the test station pipeline.

[0019] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:

[0020] In this invention, the pipeline noise elimination device includes a vacuum chamber, a vacuum pipe, and a vacuum valve. The vacuum chamber is a hollow, sealed structure used to surround the test station pipeline installed on the storage tank. One end of the vacuum pipe is connected to the interior of the vacuum chamber, and the other end is connected to a vacuum pump. The vacuum valve is located on the vacuum pipe and is used to control the opening and closing of the vacuum pipe. When it is necessary to evacuate the vacuum chamber, the vacuum valve and the vacuum pump are opened, and the vacuum pump can evacuate the vacuum chamber through the vacuum pipe. Since sound cannot travel in a vacuum, by setting up a vacuum chamber to completely surround the test station pipeline and maintaining the vacuum chamber in a vacuum state, it is ensured that the noise generated by the test station pipeline cannot propagate outward. This effectively eliminates the working noise at the test station pipeline, prevents the noise from affecting the surrounding environment, and ensures the safe working conditions of the operators. Attached Figure Description

[0021] Figure 1 This is a schematic diagram illustrating the use of a pipe noise elimination device according to an embodiment of the present invention.

[0022] Figure 2 yes Figure 1 A cross-sectional view of AA in the structure shown.

[0023] Figure 3 This is a control principle diagram of a pipeline noise elimination device according to an embodiment of the present invention.

[0024] The annotations in the attached figures are explained as follows:

[0025] 10-Test station piping; 11-Connecting joint;

[0026] 20 - Medium-pressure compressed air pipeline; 21 - Low-pressure compressed air pipeline; 22 - Nitrogen supply pipeline;

[0027] 30 - Vent pipe; 31 - Air utilization pipe; 32 - Vacuum extraction pipe;

[0028] 100 - Vacuum chamber; 110 - Chamber plate; 120 - Reinforcing member; 130 - Through hole;

[0029] 200 - Vacuum piping; 210 - Vacuum pump; 300 - Vacuum valve; 400 - Vacuum gauge;

[0030] 500 - Support bracket; 510 - Support leg;

[0031] 600-Controller. Detailed Implementation

[0032] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0033] In the description of this application, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back) are merely for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications also change accordingly.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] See Figure 1As shown, this utility model provides a testing device for tank truck storage tanks, including a test station pipeline 10 and multiple air inlet pipes and multiple air outlet pipes connected to the test station pipeline 10, as well as a pipeline noise elimination device.

[0036] like Figure 1 As shown, the test station pipeline 10, as the name suggests, refers to the pipeline installed at the station where tests such as air pressure, air tightness, vacuuming, and displacement of the tank truck storage tank are conducted, and is used to connect to the tank truck storage tank. When relevant tests need to be conducted on the tank truck storage tank, the tank truck storage tank is transported to this station, and the tank truck storage tank is connected to the test station pipeline 10.

[0037] like Figure 1 As shown, the test station pipeline 10 may be equipped with a connection joint 11 for connecting to the tank truck storage tank. The connection joint 11 may be a connecting flange. For example, when the test station pipeline 10 is connected to the tank truck storage tank via the connecting flange, the connecting flange may be used in conjunction with a sealing gasket to enhance sealing.

[0038] Alternatively, the connecting joint 11 can also be a quick-connect coupling. As long as the connecting joint 11 can ensure a firm and well-sealed connection between the test station pipeline 10 and the tank truck storage tank, preventing gas leakage during the test, which could affect the test results and cause safety hazards, it is acceptable.

[0039] like Figure 1 As shown, multiple air intake pipes include, but are not limited to, a medium-pressure compressed air pipe 20, a low-pressure compressed air pipe 21, and a nitrogen supply pipe 22. These multiple air intake pipes are used to supply medium-pressure compressed air, low-pressure compressed air, or nitrogen to the tank truck storage tank. Specifically, each air intake pipe can be connected to the test station pipe 10 by welding, flange connection, or threaded connection, ensuring the airtightness of each air intake pipe and the test station pipe 10. Thus, the multiple air intake pipes can be connected to the interior of the tank truck storage tank through the test station pipe 10 to conduct corresponding pressure tests, airtightness tests, and displacement tests.

[0040] It should be noted that each intake pipe can be equipped with a corresponding pressure gauge and intake valve. The pressure gauge is used to display the current gas pressure in the intake pipe in real time, so that operators can accurately control the gas pressure entering the storage tank. The intake valve is used to control the opening and closing of the current intake pipe.

[0041] like Figure 1As shown, multiple vent pipes include, but are not limited to, a vent pipe 30, an air utilization pipe 31, and a vacuum extraction pipe 32. These multiple vent pipes are used to discharge or extract air or other gases from the tanker tank. Specifically, each vent pipe can be connected to the test station pipe 10 by welding, flange connection, or threaded pipe connection, ensuring the airtightness of each vent pipe to the test station pipe 10. Thus, the multiple vent pipes can be connected to the interior of the tanker tank via the test station pipe 10 to discharge air from the tanker tank after a pressure test or airtightness test, or to conduct a vacuum test.

[0042] It should be noted that each outlet pipe can be equipped with corresponding detection instruments and outlet valves. For example, pressure gauges can be installed on the vent pipe 30 and the air utilization pipe 31, which can be used to monitor pressure changes inside the storage tank. A vacuum gauge can be installed on the vacuum extraction pipe 32, which can be used to measure the vacuum level inside the storage tank. Outlet valves can be used to control the on / off state and flow rate of the current outlet pipe, etc.

[0043] In this invention, each inlet pipe and each outlet pipe can be a continuously connected pipeline. Each inlet pipe can simultaneously supply gas to the tank truck storage tanks at multiple test stations via multiple test station pipes 10, and each outlet pipe can simultaneously discharge or extract gas from the tank truck storage tanks at multiple test stations via multiple test station pipes 10. During the test, due to changes in airflow direction and velocity, significant noise occurs at each test station pipe 10. To solve the noise problem, such as... Figure 1 As shown, a pipe noise elimination device is installed outside the test station pipe 10. The pipe noise elimination device is mainly used to eliminate the working noise of the test station pipe 10 during the test.

[0044] The following will describe in detail the specific embodiments of the pipeline noise elimination device of this utility model with reference to the accompanying drawings.

[0045] Please see Figure 1 and Figure 2 As shown, the pipeline noise elimination device of this utility model embodiment includes a vacuum chamber 100, a vacuum pipe 200, and a vacuum valve 300. The vacuum chamber 100 is a hollow, sealed structure used to surround the test station pipe 10 installed in the storage tank. A through hole 130 is provided on the wall of the vacuum chamber 100, and the end of the test station pipe 10 that communicates with the storage tank passes through the through hole 130 and is sealed to the wall of the vacuum chamber 100. One end of the vacuum pipe 200 communicates with the interior of the vacuum chamber 100, and the other end communicates with a vacuum pump 210. The vacuum valve 300 is located on the vacuum pipe 200 and is used to control the opening and closing of the vacuum pipe 200.

[0046] The vacuum pipe 200 can be made of a pressure-resistant metal material, such as stainless steel or carbon steel. The vacuum pipe 200 can also undergo appropriate anti-corrosion treatment to ensure its long-term performance. One end of the vacuum pipe 200 can be welded to the side wall of the vacuum chamber 100 to ensure a tight seal between the vacuum pipe 200 and the vacuum chamber 100.

[0047] Vacuum pump 210 can be a rotary vane vacuum pump, a water ring vacuum pump, etc., depending on the specific requirements. Vacuum valve 300 can be a vacuum baffle valve or a vacuum gate valve, etc., depending on the specific requirements.

[0048] In this embodiment, when it is necessary to evacuate the vacuum chamber 100, the vacuum valve 300 and the vacuum pump 210 are opened. The vacuum pump 210 then evacuates the vacuum chamber 100 through the vacuum evacuation pipe 200. Since sound cannot propagate in a vacuum, by setting the vacuum chamber 100 to completely surround the test station pipe 10 and maintaining the vacuum chamber 100 in a vacuum state, it is ensured that the noise generated by the test station pipe 10 cannot propagate outward. This effectively eliminates the working noise at the test station pipe 10, prevents the noise from affecting the surrounding environment, and ensures the safe working conditions of the operators.

[0049] like Figure 1 and Figure 2 As shown, the vacuum chamber 100 can be a rectangular box structure. For example, the vacuum chamber 100 includes multiple panels 110, which together enclose a box structure with a rectangular cross-section. The number of panels 110 can be six; six flat panels 110 connected together can form a rectangular box structure. Alternatively, the number of panels 110 can be four, with two panels 110 being L-shaped and the other two being flat. These four panels 110 can also enclose a rectangular box structure, depending on the specific requirements.

[0050] In this embodiment, the vacuum chamber 100 is designed in a cuboid shape, which is simple to manufacture, occupies little space, and can be adapted to surround the pipe 10 at the test station. It is understood that in other embodiments, the vacuum chamber 100 may also be cylindrical or prismatic.

[0051] In one embodiment, each panel 110 is made of steel plate, and adjacent panels 110 are welded together. By using steel plates for all panels 110 of the vacuum chamber 100, the structural strength of the vacuum chamber 100 can be effectively improved, enabling it to meet higher vacuum requirements. By using welding to connect the panels 110, the connection strength and sealing of the vacuum chamber 100 can be ensured, thus meeting usage requirements.

[0052] like Figure 2 As shown, the through hole 130 can be provided on one of the panels 110 of the vacuum chamber 100. The pipe body portion of the test station pipe 10, which has a connecting joint 11, can pass through the through hole 130. Furthermore, the pipe body portion can be welded to the edge of the through hole 130 of the panel 110 to achieve a sealed connection between the test station pipe 10 and the vacuum chamber 100, ensuring the airtightness of the test station pipe 10 and the vacuum chamber 100.

[0053] Of course, in other embodiments, the pipe body portion of the test station pipe 10 with the connecting joint 11 may be inserted into the through hole 130, and a sealing structure such as a sealing ring may be provided between the pipe body portion and the through hole 130 to achieve a sealed connection between the test station pipe 10 and the vacuum box 100, thereby ensuring the airtightness of the test station pipe 10 and the vacuum box 100.

[0054] It should be noted that, since the test station pipeline 10 is entirely housed within the vacuum chamber 100, each inlet and outlet pipeline must pass through the wall of the vacuum chamber 100 to connect with the test station pipeline 10. For example, the vacuum chamber 100 may have openings corresponding to each inlet and outlet pipeline on its wall. Each inlet pipeline can pass through its corresponding opening and extend into the vacuum chamber 100 to connect with the test station pipeline 10, and each inlet pipeline can be welded to the edge of the opening in the vacuum chamber 100 wall. Similarly, each outlet pipeline can pass through its corresponding opening and extend into the vacuum chamber 100 to connect with the test station pipeline 10, and each outlet pipeline can be welded to the edge of the opening in the vacuum chamber 100 wall. This not only ensures reliable communication between the inlet and outlet pipelines and the test station pipeline 10 but also guarantees the airtightness of the vacuum chamber 100.

[0055] See Figure 1 In one embodiment, the vacuum chamber 100 further includes a plurality of reinforcing members 120, each reinforcing member 120 being fixedly connected between two adjacent chamber plates 110. Each reinforcing member 120 is made of angle steel and is welded to the chamber plate 110. In this embodiment, by providing reinforcing members 120, the overall structural strength of the vacuum chamber 100 can be enhanced, allowing for the use of thinner steel plates for each chamber plate 110, thereby reducing the overall weight of the vacuum chamber 100.

[0056] See Figure 2 In one embodiment, the pipe noise cancellation device further includes a support bracket 500, which is disposed at the bottom of the vacuum chamber 100 and is used to support the vacuum chamber 100. For example, the support bracket 500 includes a plurality of legs 510 fixedly connected to the bottom of the vacuum chamber 100, each leg 510 being made of angle steel.

[0057] In this embodiment, the support bracket 500 stably supports the vacuum chamber 100, ensuring that the vacuum chamber 100 can be fixedly installed on the ground and guaranteeing its reliable use. The support bracket 500 uses a leg structure made of multiple angle steels, which simplifies its structure and reduces manufacturing costs.

[0058] It is understood that in other embodiments, the support bracket 500 may also be of other structures, for example, it may include two spaced-apart H-shaped brackets.

[0059] See Figure 2 In one embodiment, the pipeline noise elimination device further includes a vacuum gauge 400, which is installed on the vacuum chamber 100 and is used to measure the vacuum level inside the vacuum chamber 100. In this embodiment, by setting the vacuum gauge 400, the vacuum status of the vacuum chamber 100 can be known in real time, so that the vacuum chamber 100 can be evacuated as needed.

[0060] Furthermore, such as Figure 3 As shown, the pipeline noise cancellation device also includes a controller 600, which is electrically connected to the vacuum gauge 400, vacuum valve 300, and vacuum pump 210. The controller 600 is used to control the operation of the vacuum valve 300 and vacuum pump 210 based on the measurement results of the vacuum gauge 400. The controller 600 can be a PLC or a microcontroller, etc.

[0061] In this embodiment, by setting the controller 600 to obtain the measurement results of the vacuum gauge 400, and controlling the operation of the vacuum valve 300 and the vacuum pump 210 according to the results, precise control of vacuuming of the vacuum chamber 100 can be achieved, which improves the automation level and working efficiency of the pipeline noise elimination device.

[0062] When using the pipeline noise cancellation device of this utility model:

[0063] Before the test begins, the controller 600 can obtain the measurement results from the vacuum gauge 400. If the vacuum level of the vacuum chamber 100 does not meet the requirements, the controller 600 will control the vacuum valve 300 and the vacuum pump 210 to open, so as to evacuate the vacuum chamber 100.

[0064] If the vacuum level in vacuum chamber 100 meets the vacuum requirements, then vacuum valve 300 and vacuum pump 210 are closed. Afterwards, operators can sequentially perform pressure, airtightness, vacuuming, and purging tests on the tank truck storage tank.

[0065] Taking the pneumatic pressure test as an example, during the test, all outlet pipes must be closed, and the medium-pressure compressed air pipe 20 must be opened to allow medium-pressure compressed air to enter the tanker tank through the medium-pressure compressed air pipe 20 and the test station pipe 10. As medium-pressure compressed air is continuously added, the pressure inside the tank gradually increases. The operator monitors the pressure value in real time using the pressure gauge on the medium-pressure compressed air pipe 20. Once the pressure reaches the specified test value, the inlet valve on the medium-pressure compressed air pipe 20 is closed and maintained for a period of time (usually determined according to relevant standards and test requirements). The pressure change in the tank is observed to determine whether the tank's strength and sealing performance meet the requirements. If the pressure drop is within the allowable range within the specified time, it indicates that the tank's pressure-bearing capacity and sealing performance are good; if the pressure drops too quickly, there may be leaks or other problems, requiring further inspection.

[0066] During the test, the controller 600 can monitor the vacuum gauge 400 in real time and open the vacuum valve 300 and vacuum pump 210 as needed to keep the vacuum chamber 100 in a vacuum state.

[0067] This utility model discloses a pipeline noise elimination device and a testing device for tank trucks. By setting up a vacuum chamber to completely surround the pipeline at the testing station and maintaining the vacuum chamber in a vacuum state, it ensures that the noise generated by the pipeline at the testing station cannot propagate outward. This effectively eliminates the working noise at the pipeline at the testing station, prevents the noise from affecting the surrounding environment, and ensures the safe working conditions of the operators.

[0068] The above embodiments are merely illustrative examples of structures. The structures in each embodiment are not fixed combinations. In the absence of structural conflicts, the structures in multiple embodiments can be arbitrarily combined and used.

[0069] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A pipe noise elimination device, characterized by, The pipeline noise elimination device comprises a vacuum box, an evacuation pipeline, a vacuum valve and a vacuum gauge. The vacuum box is a sealed structure with an inner cavity, and is used for surrounding a test station pipeline arranged outside a storage tank. The test station pipeline is arranged in a through hole of the vacuum box and is in sealing connection with the vacuum box. One end of the evacuation pipeline is in communication with the inner cavity of the vacuum box, and the other end of the evacuation pipeline is in communication with a vacuum pump.

2. A duct noise cancellation apparatus according to claim 1, wherein, The vacuum valve is arranged on the evacuation pipeline and is used for controlling the opening and closing of the evacuation pipeline.

3. A duct noise cancellation apparatus according to claim 2, wherein, The vacuum gauge is arranged on the vacuum box and is used for measuring the vacuum degree in the vacuum box.

4. The duct noise cancellation apparatus of claim 1, wherein, A controller is electrically connected with the vacuum gauge, the vacuum valve and the vacuum pump, and is used for controlling the actions of the vacuum valve and the vacuum pump according to the measurement result of the vacuum gauge.

5. A duct noise cancellation apparatus according to claim 4, wherein, The vacuum box comprises a plurality of box plates which jointly form a box structure with a rectangular cross section.

6. The duct noise cancellation apparatus of claim 4, wherein, Each of the box plates is made of a steel plate, and two adjacent box plates are in welding connection.

7. A duct noise cancellation apparatus according to claim 6, wherein The vacuum box further comprises a plurality of reinforcing members, and each of the reinforcing members is fixedly connected between two adjacent box plates.

8. A duct noise cancellation apparatus according to any one of claims 1 to 7, characterised in that, Each of the reinforcing members is made of an angle steel, and the reinforcing member is in welding connection with the box plate.

9. A duct noise cancellation apparatus according to claim 8, wherein, A support bracket is arranged at the bottom of the vacuum box and is used for supporting the vacuum box.

10. A test apparatus for a tank truck storage tank, characterized by The support bracket comprises a plurality of supporting legs which are fixedly connected to the bottom of the vacuum box and are made of angle steels. The pipeline noise elimination device comprises a test station pipeline, a plurality of air inlet pipelines and a plurality of air outlet pipelines connected with the test station pipeline, and the pipeline noise elimination device of any one of claims 1-9. The test station pipeline is used for being in communication with a tank truck storage tank, and the vacuum box surrounds the test station pipeline.

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