A corrugated tube pressure maintaining test platform

Abstract

The application discloses a corrugated pipe pressure maintaining test platform, which comprises a seat body one and a seat body two, the bottom of the seat body one and the seat body two is provided with a moving part, the top of the seat body one is provided with a control cabinet and a mounting plate through a main frame, the top of the seat body two is provided with a compensator support, the seat body one and the seat body two are provided in a split mode, a test compensator is placed on the compensator support, and a gas storage bottle is arranged on the seat body one. The application has the advantages of double test, full function, two-way pipeline adapting to inner cavity and outer chamber pressure maintaining test, no additional equipment, product protection, test accuracy, filtering and drying and pipeline cleaning, avoiding corrugated pipe damage, guaranteeing reliable results, flexible movement, wide adaptation, split mode and moving part, adjustable position, adaptation to different scenes and samples, integrated operation, simple process, pressure detection, exhaust and cleaning integration, convenient valve control, low noise, environmental protection and good experience.

Description

Technical Field

[0001] This invention relates to the field of testing equipment technology, and in particular to a bellows pressure holding test platform. Background Technology

[0002] The pressure holding performance of bellows directly affects its sealing reliability and service life; therefore, pressure holding testing is a core inspection step before the product leaves the factory. Existing pressure holding testing platforms have the following technical shortcomings: Limited functionality: It can only perform pressure holding tests on a single cavity (inner cavity or outer chamber) of the bellows, and cannot meet the dual testing requirements. It requires replacement of equipment or pipelines, resulting in low testing efficiency. Corrugated pipes are easily damaged: The test gas contains impurities and moisture, and the pipeline has residual dirt after long-term use, which can easily cause corrosion and scratches on the inner or outer wall of the corrugated pipe. Inconvenient to move: Most test platforms are fixed structures and cannot be flexibly adjusted according to the test scenario or the size of the corrugated pipe, resulting in poor adaptability; Exhaust noise is loud: After testing, the exhaust process had no noise reduction design, and the high decibel noise polluted the working environment and affected the operator's experience. Cumbersome operation: Pressure testing, venting, and pipeline cleaning require separate operations, lacking integrated design, and the testing process is complex, time-consuming, and labor-intensive.

[0003] To address the aforementioned shortcomings, there is an urgent need for a bellows pressure holding test platform that is fully functional, protects the bellows, is easy to move, operates with low noise, and integrates operations. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a bellows pressure holding test platform. This platform aims to overcome the deficiencies of existing test platforms, such as limited functionality, vulnerability to bellows damage, inconvenient mobility, high noise levels, and cumbersome operation. It provides a highly efficient and practical pressure holding test platform through a split-type mobile design, dual-path testing pipelines, integrated functional mechanisms (pressure detection, venting, cleaning), and a filter and drying structure. This achieves dual pressure holding testing of bellows, pipeline protection, convenient mobility, and low-noise operation, thereby improving testing efficiency and accuracy.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A bellows pressure holding test platform includes a base body one and a base body two. Movable components are installed at the bottom of both base bodies one and two. A control cabinet and a mounting plate are connected to the top of base body one via a main frame. A compensator bracket is installed on the top of base body two. Base bodies one and two are separate units. A test compensator is placed on the compensator bracket. A gas storage cylinder is installed on base body one. The output end of the gas storage cylinder is connected to test pipeline one and test pipeline two via a main pipeline and a tee fitting one. Test pipeline one communicates with the inner cavity of the test compensator, and test pipeline two communicates with the outer chamber of the test compensator. Both test pipeline one and test pipeline two are equipped with a pressure detection mechanism, an exhaust mechanism, and a cleaning mechanism.

[0006] Preferably, the pressure detection mechanism includes a branch pipe, which is connected to the detection pipe via a ferrule tee 2. A ferrule needle valve 2 and a pressure transmitter are sequentially installed on the branch pipe.

[0007] Preferably, the exhaust mechanism includes a second branch pipe, which is connected to the first detection pipe via a ferrule tee. A ferrule needle valve and a connector silencer are sequentially installed on the second branch pipe.

[0008] Preferably, the cleaning mechanism includes a branch pipe three, which is connected to the detection pipe one via a ferrule tee two. A ferrule needle valve four and a clamp are sequentially installed on the branch pipe three, and the clamp is connected to an external air source system.

[0009] Preferably, the test compensator includes an upper end cap, a straight pipe, and a lower end cap that are sealed together. The upper end cap is connected to the first test pipeline through a gas chamber connector, and the lower end cap is connected to the second test pipeline through a working chamber connector. A fixed support flange is clamped at the connection between the upper end cap and the straight pipe. A bellows is fixedly connected to the support flange. The lower end of the bellows is a free end and is sealed with a squeezer. A fixed limiting flange is clamped at the connection between the straight pipe and the lower end cap.

[0010] Preferably, the upper end cap, straight pipe, and lower end cap are assembled and fixed externally via connecting flanges.

[0011] Preferably, both the first detection pipeline and the second detection pipeline are fixed to the mounting plate by pipeline fixing brackets.

[0012] Preferably, both the first detection pipeline and the second detection pipeline are equipped with a filter dryer.

[0013] Preferably, a gas cylinder control valve and a pressure gauge are respectively installed on the main pipeline.

[0014] Compared with the prior art, the beneficial effects of the present invention are: Comprehensive functions and dual testing capabilities: The dual testing pipelines correspond to the inner cavity and outer chamber of the corrugated pipe respectively, which can realize two pressure holding test requirements without changing equipment or pipelines, greatly improving testing efficiency. Protecting the bellows and ensuring reliable testing: The filter dryer dries and filters the test gas, removing moisture and impurities to prevent corrosion or scratches on the bellows; the pipeline cleaning mechanism can blow away residual dirt, ensuring a clean testing environment and improving the accuracy of test results. Easy to move and highly adaptable: The split design of the base with the bottom moving parts allows for flexible adjustment of the test position, adapting to different specifications of corrugated pipes and test scenarios. No need to move the whole unit, making operation more convenient. Integrated operation and simplified process: Pressure detection, low-noise exhaust and pipeline cleaning functions are integrated into one unit. Each step can be completed through valve control, eliminating the need to operate multiple devices separately and reducing the operating threshold. Low noise and environmentally friendly: The exhaust mechanism is equipped with a connector silencer, which effectively reduces exhaust noise, improves the working environment, and enhances the operator's experience; the pressure transmitter works in conjunction with the control cabinet to achieve real-time pressure monitoring and high testing accuracy. Attached Figure Description

[0015] To illustrate the technical solutions in the embodiments of the present invention or the prior art more specifically and intuitively, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure proposed in this invention; Figure 2 This is a schematic diagram of the front view of the structure proposed in this invention; Figure 3 This is a schematic diagram of the test compensator structure proposed in this invention.

[0017] In the diagram: 1. Base 1; 2. Base 2; 3. Compensator bracket; 4. Gas cylinder; 5. Gas cylinder control valve; 6. Pressure gauge; 7. Detection pipeline 1; 7. Filter dryer; 701. Compression needle valve 1; 702. Pressure transmitter; 703. Branch pipeline 1; 704. Compression needle valve 2; 705. Connector silencer; 706. Branch pipeline 2; 707. Compression needle valve 3; 708. Branch pipeline 3; 709. Clamp; 710. Compression needle valve 4; 711. 712. Tee 2, Air pipe connector, 713. Test pipeline 2, 8. Main pipeline, 9. Mounting plate, 10. Pipeline fixing bracket, 11. Compression tee 1, 12. Control cabinet, 13. Main frame, 14. Test compensator, 15. Upper end cap, 151. Straight pipe, 152. Lower end cap, 153. Limiting flange, 154. Support flange, 155. Corrugated pipe, 156. Extruder, 157. Air chamber connection pipe, 158. Working chamber connection pipe, 159. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Reference Figure 1-3 A bellows pressure holding test platform includes a base 1 and a base 2, both with movable parts installed at the bottom. The top of the base 1 is connected to the control cabinet 13 and the mounting plate 10 via the main frame 14. The top of the base 2 is equipped with a compensator bracket 3. The base 1 and base 2 are set separately. The test compensator 15 is placed on the compensator bracket 3. The base 1 is equipped with a gas storage cylinder 4. The output end is connected to the test pipeline 7 and the test pipeline 8 via the main pipeline 9 and the compression tee 12. The test pipeline 7 communicates with the inner cavity of the test compensator 15, and the test pipeline 8 communicates with the outer chamber. Both pipelines are equipped with a pressure detection mechanism, an exhaust mechanism and a cleaning mechanism. The separate design with movable parts allows for flexible adjustment of the position, and the dual pipelines realize dual pressure holding tests.

[0020] The pressure testing mechanism includes branch pipe 1 704, which is connected to the testing pipeline via ferrule tee 2 712. It is equipped with ferrule needle valve 2 705 and pressure transmitter 703 in sequence to accurately collect pressure data and feed it back to the control cabinet. The exhaust mechanism includes branch pipe 2 707, which is connected via ferrule tee 2 712. It is equipped with ferrule needle valve 3 708 and connector silencer 706 to achieve low-noise exhaust.

[0021] The cleaning mechanism includes branch pipe 3 709, connected via ferrule tee 2 712, equipped with ferrule needle valve 4 711 and clamp 710, and can be connected to an external air source to purge and clean the pipeline; the test compensator 15 includes upper end cap 151, straight pipe 152, and lower end cap 153. The upper end cap is connected to test pipeline 1 7 via air chamber pipe 158, and the lower end cap is connected to test pipeline 2 8 via working chamber pipe 159. Support flange 155 fixes bellows 156, extruder 157 seals the lower end, limit flange 154 ensures stability, and connecting flange facilitates disassembly and assembly; the test pipeline is fixed to the mounting plate 10 via pipeline fixing bracket 11, with a neat layout.

[0022] Both pipelines are equipped with filter dryers 701 to dry and filter the gas and protect the bellows; the main pipeline is equipped with a gas cylinder control valve 5 and a pressure gauge 6 to control the gas output and display the pressure.

[0023] Platform assembly and debugging: Push seat 1 and seat 2 (moving parts assist) to adjust to a suitable test position; place test compensator 15 on compensator bracket 3, and assemble and fix upper end cap 151, straight pipe 152 and lower end cap 153 through connecting flange to ensure reliable sealing; connect test pipeline 1 7 to the inner cavity of test compensator 15 through air chamber pipe 158, and connect test pipeline 2 8 to the outer chamber through working chamber pipe 159, and fix the two pipelines with pipeline fixing bracket 11.

[0024] Connect clamp 710 to the external air supply system, check that all valves are closed, start control cabinet 13, and test the consistency between pressure transmitter 703 and pressure gauge 6.

[0025] Bellows inner cavity pressure holding test: Open the ferrule needle valve 702 on test line 1 7, and close the ferrule needle valve 702 on test line 2 8; open the gas cylinder control valve 5 and the ferrule needle valve 705 on test line 1 7, and close the ferrule needle valve 708 and the ferrule needle valve 711; the gas in the gas cylinder 4 enters the inner cavity of the test compensator 15 through the main line 9 and test line 1 7, and the filter dryer 701 removes moisture and impurities from the gas to avoid damaging the bellows 156; after the pressure reaches the preset value, close the gas cylinder control valve 5 and the ferrule needle valve 705, and let it stand for a preset time; observe the pressure change of the pressure transmitter 703 through the control cabinet 13 to determine whether the pressure holding performance of the bellows inner cavity is qualified.

[0026] Bellows outer chamber pressure holding test: Close the ferrule needle valve 702 on test line 7, and open the ferrule needle valve 702 on test line 8; repeat the above steps of inflation, pressure holding, and pressure monitoring. The gas enters the outer chamber of the test compensator 15 through test line 8 to complete the outer chamber pressure holding performance test and realize the dual test function.

[0027] Exhaust and pipeline cleaning: After the test is completed, open the ferrule needle valve 3 708 on the corresponding test pipeline. The gas is discharged through the branch pipeline 2 707. The connector silencer 706 reduces exhaust noise. When the pipeline needs to be cleaned, close the gas cylinder control valve 5, open the ferrule needle valve 4 711, start the external gas source system, and the gas is back-blown through the branch pipeline 3 709 to remove residual dirt and avoid affecting the next test.

[0028] Replacement of test samples and relocation of the adapter: Loosen the connecting flange, remove the test compensator 15, replace with a new bellows sample and reassemble; If the test site needs to be changed, push the base 1 and base 2, and the moving parts can be moved flexibly without the need for overall transportation, adapting to different test scenarios.

[0029] When simulating the internal pressurization of the bellows 156, open the ferrule needle valve 702 on the first test line 7 and close the ferrule needle valve 702 on the second test line 8. Correspondingly, open the gas cylinder control valve 5 and the ferrule needle valve 705 on the first test line 7, and close the ferrule needle valve 708 and the ferrule needle valve 711 on the first test line 7. Use the gas cylinder 4 to pressurize the bellows 156. After the pressure is reached, close the gas cylinder control valve 5 and let it stand for a preset time. Check whether the pressure value change sent by the pressure transmitter 703 on the first test line 7 meets the requirements, thereby determining whether the bellows 156 is qualified. When simulating the external pressurization of the bellows 156, the operation is the opposite of the above operation: open the ferrule needle valve 702 on the second test line 8 and close the ferrule needle valve 702 on the first test line 7. The rest of the operation is the same, which has multiple testing applications.

[0030] After retrieval, open the ferrule needle valve 708 to exhaust gas. The connector silencer 706 can reduce the noise generated by the exhaust. The pipeline system can be back-pressurized through the branch pipe 709 to clean the pipeline system. The filter dryer 701 can dry and filter the gas to avoid damage to the bellows 156.

[0031] The test compensator 15 can move together with the vehicle body consisting of the second seat 2, the compensator bracket 3, and the moving parts, which facilitates equipment testing and improves efficiency.

[0032] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A bellows pressure holding test platform, comprising a base (1) and a base (2), wherein the bottom of both bases (1) and base (2) are equipped with moving parts, the top of base (1) is connected to a control cabinet (13) and a mounting plate (10) respectively via a main frame (14), and the top of base (2) is provided with a compensator bracket (3), characterized in that, The seat body one (1) and seat body two (2) are set separately. The test compensator (15) is placed on the compensator bracket (3). The gas storage bottle (4) is set on the seat body one (1). The output end of the gas storage bottle (4) is connected to the test pipeline one (7) and the test pipeline two (8) respectively through the main pipeline (9) and the tee one (12). The test pipeline one (7) is connected to the inner cavity of the test compensator (15), and the test pipeline two (8) is connected to the outer chamber of the test compensator (15). The test pipeline one (7) and the test pipeline two (8) are both equipped with a pressure detection mechanism, an exhaust mechanism and a cleaning mechanism.

2. The bellows pressure holding test platform according to claim 1, characterized in that, The pressure detection mechanism includes a branch pipe (704), which is connected to the detection pipe (7) via a ferrule tee (712). A ferrule needle valve (705) and a pressure transmitter (703) are sequentially installed on the branch pipe (704).

3. The bellows pressure holding test platform according to claim 2, characterized in that, The exhaust mechanism includes a second branch pipe (707), which is connected to the first detection pipe (7) via a ferrule tee two (712). A ferrule needle valve three (708) and a connector silencer (706) are installed on the second branch pipe (707) in sequence.

4. The bellows pressure holding test platform according to claim 3, characterized in that, The cleaning mechanism includes a third branch pipe (709), which is connected to the first detection pipe (7) via a ferrule tee two (712). A ferrule needle valve four (711) and a clamp (710) are sequentially installed on the third branch pipe (709), and the clamp (710) is connected to an external air source system.

5. The bellows pressure holding test platform according to claim 4, characterized in that, The test compensator (15) includes an upper end cap (151), a straight pipe (152), and a lower end cap (153) that are sealed together. The upper end cap (151) is connected to the first test pipeline (7) through a gas chamber connector (158), and the lower end cap (153) is connected to the second test pipeline (8) through a working chamber connector (159). A fixed support flange (155) is clamped at the connection between the upper end cap (151) and the straight pipe (152). The support flange (155) is fixedly connected to a bellows pipe (156). The lower end of the bellows pipe (156) is a free end and is sealed with a squeezer (157). A fixed limiting flange (154) is clamped at the connection between the straight pipe (152) and the lower end cap (153).

6. The bellows pressure holding test platform according to claim 5, characterized in that, The upper end cap (151), straight pipe (152) and lower end cap (153) are assembled and fixed externally by connecting flanges.

7. The bellows pressure holding test platform according to claim 6, characterized in that, Both the first detection pipeline (7) and the second detection pipeline (8) are fixed on the mounting plate (10) by the pipeline fixing bracket (11).

8. The bellows pressure holding test platform according to claim 7, characterized in that, Both the first detection pipeline (7) and the second detection pipeline (8) are equipped with filter dryers (701).

9. A bellows pressure holding test platform according to claim 8, characterized in that, The main pipeline (9) is equipped with a gas cylinder control valve (5) and a pressure gauge (6).

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