Multi-pass nitrogen seal pressure test integrated device

Abstract

The utility model relates to multi -pass nitrogen seal pressure -maintaining test integrated device, including frame, inside fixed mounting through support several inlet pipes, several inlet pipes one end has water tank no.

Description

Technical Field

[0001] This utility model relates to the field of pressure holding test technology, specifically to a multi-channel nitrogen-sealed pressure holding test integrated device. Background Technology

[0002] In the production or testing of industrial fluid systems, nitrogen filling and pressure holding tests are often required to verify their sealing performance and pressure resistance stability. At the same time, the demand for simultaneous testing of multi-channel components is increasing to improve testing efficiency.

[0003] Currently, nitrogen sealing pressure holding tests mostly employ decentralized equipment: nitrogen filling devices, pressure holding detection instruments, and channel switching valves need to be arranged separately and manually connected. This not only occupies a large space and involves cumbersome operation procedures, but also requires switching channels one by one during multi-channel testing, resulting in low testing efficiency and poor parameter consistency between channels. In addition, some testing systems lack pre-filtration and media circulation units. If impurities are mixed into the test medium, it can easily cause blockage of the detection components or damage to the sealing surface, affecting the testing accuracy and equipment life. At the same time, traditional equipment has a low degree of integration and lacks a unified framework and protective structure. In complex environments such as workshops, the equipment is susceptible to dust and external force interference, and the convenience of maintenance and operation is poor. Therefore, we need to provide an integrated multi-channel nitrogen sealing pressure holding test device. Utility Model Content

[0004] The purpose of this invention is to provide a multi-channel nitrogen sealing and pressure holding test integrated device. By setting up several water inlet pipes, it can realize the synchronous nitrogen filling and pressure holding test of multiple branch components. The device integrates a triple filter and a five-stage detection device, which can perform pre-filtration treatment on the test medium, effectively remove impurities in the medium, and solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-channel nitrogen sealing and pressure holding test integrated device, comprising: The frame has several water inlet pipes fixedly installed inside by brackets, and one end of each water inlet pipe is connected to a water tank. One side of the water tank is connected to a flow pool via a pipe, and a vertical pump is installed inside the pipe. One side of the flow pool is connected to a five-stage detection device via a pipe, and the other side of the five-stage detection device is connected to a three-stage filter via a pipe to two water tanks. Both water tanks have filters installed on one side via a drive unit.

[0006] Preferably, the drive unit includes a vertical pump and two pipes, one end of which is connected to a filter and the other end is connected to two water tanks.

[0007] Preferably, a plurality of pressure transmitters are installed on one side of the filter via a pipe equipped with transmitters.

[0008] Preferably, the bottom of the water tank is provided with a delivery pipe equipped with a pneumatic ball valve, and the delivery pipe is connected to the five-fold detection device.

[0009] Preferably, electric ball valves are installed on the surface of several water inlet pipes.

[0010] Preferably, an observation window is provided on one side of the frame.

[0011] Preferably, the bottom of the first vertical pump and the two second vertical pumps are fixedly mounted with mounting brackets, and the mounting brackets are fixedly mounted within the frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention enables simultaneous nitrogen filling and pressure holding tests for multiple branch components by setting up several water inlet pipes. Compared with the traditional decentralized equipment that requires switching the test path one by one, it shortens the test cycle. The device integrates a triple filter and a five-stage detection device, which can pre-filter the test medium to effectively remove impurities in the medium and avoid impurities from clogging the detection components or damaging the sealing surface. Furthermore, through the synergistic effect of multiple detection units, it improves the accuracy and reliability of the pressure holding performance test data. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a perspective view of the internal structure of this utility model; Figure 3 This is a three-dimensional top view of the internal structure of this utility model; Figure 4 This is a flowchart illustrating the present invention.

[0014] In the diagram: 1. Frame; 2. Inlet pipe; 3. Water tank one; 4. Flow pool; 5. Vertical pump one; 6. Five-stage detection device; 7. Triple filter; 8. Water tank two; 9. Filter; 10. Drive unit; 101. Vertical pump two; 102. Pipe two; 11. Transmitter; 12. Pneumatic ball valve; 13. Delivery pipe; 14. Electric ball valve; 15. Observation window; 16. Mounting bracket. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] This utility model provides a technical solution: a multi-channel nitrogen sealing and pressure holding test integrated device, including a frame 1, inside which a plurality of water inlet pipes 2 are fixedly installed by a bracket, one end of the plurality of water inlet pipes 2 is connected to a water tank 3; one side of the water tank 3 is connected to a flow pool 4 through a pipe, and a vertical pump 5 is installed in the pipe. One side of the flow pool 4 is connected to a five-stage detection device 6 via a pipe. The other side of the five-stage detection device 6 is connected to a three-stage filter element 7 via a pipe, which connects to two water tanks 2 8. Each of the two water tanks 2 8 has a filter 9 installed on one side via a drive unit 10.

[0017] Specifically, by setting up several water inlet pipes, simultaneous nitrogen filling and pressure holding tests can be achieved for multiple branch components. Compared with the traditional decentralized equipment that requires switching the test path one by one, the test cycle is shortened. The device integrates a triple filter 9 and a five-stage detection device 6, which can perform pre-filtration of the test medium, effectively removing impurities in the medium and avoiding impurities from clogging the detection components or damaging the sealing surface. Furthermore, through the synergistic effect of multiple detection units, the accuracy and reliability of the pressure holding performance test data are improved.

[0018] As shown in the figure, the drive unit 10 includes a vertical pump 101 and two pipes 102. One end of each pipe 102 is sealed to the medium inlet of the filter 9 through a flange structure, and the other end is sealed to the medium outlets of the two water tanks 8 through quick-connect fittings. The vertical pump 101 is connected in series in the middle of the pipes 102, and the water inlet of the vertical pump 101 is adapted to be connected to the outlet of the water tank 8. The outlet end is adapted to connect with the inlet end of the filter 9. The vertical pump 2 101 is made of stainless steel to meet the corrosion resistance requirements of the test medium. It works with pipeline 2 102, filter 9 and water tank 2 8 to form a closed-loop medium circulation circuit. Before the nitrogen sealing pressure test, it can drive the medium to flow through the filter 9 to complete the secondary purification. During the pressure test, it can maintain the stability of the medium pressure in the pipeline.

[0019] As shown in the figure, the filter 9 has a medium output port on the side away from the pipeline 102. The medium output port is sealed and connected to the detection end of several pressure transmitters 11 through a stainless steel pipeline with a valve body, and each pressure transmitter 11 is set with a corresponding test path. Specifically, the signal output terminal of the pressure transmitter 11 is connected to the external control system via a wire, and its detection terminal has a built-in sealing diaphragm that can directly contact the test medium. The pressure transmitter 11 is encapsulated in a metal shell to meet the protection requirements of industrial testing environments; it works in conjunction with the filter 9 and the five-fold detection device 6 to accurately collect real-time pressure data of the filtered medium in each channel during the pressure holding phase and synchronously feed the data back to the control system.

[0020] As shown in the figure, the bottom of the water tank 3 is provided with an outwardly extending boss interface. The boss interface is sealed and fixed to one end of the delivery pipe 13 by a threaded connection. The other end of the delivery pipe 13 is sealed and connected to the medium replenishment inlet of the five-fold detection device 6 through a flange structure. The pneumatic ball valve 12 is connected in series on the side of the delivery pipe 13 near the boss interface of the water tank 3, and the control end of the pneumatic ball valve 12 is connected to the external air pressure control system through an air pipe. Furthermore, the delivery pipe 13 is made of seamless steel pipe, and the pneumatic ball valve 12 is made of high-pressure resistant sealed valve seat; it works together with the water tank 3 and the five-fold detection device 6 to form a medium replenishment circuit. During the pressure holding test, if the five-fold detection device 6 detects that the pressure is lower than the preset threshold, the medium in the water tank 3 can be accurately replenished to the detection system by automatically opening the pneumatic ball valve 12.

[0021] As shown in the figure, several water inlet pipes 2 are equipped with mounting bases at one end near the water tank 3. The electric ball valve 14 is fixed to the mounting base by bolts, and the water inlet of the electric ball valve 14 is sealed and connected to the water outlet of the water inlet pipe 2, and the water outlet is sealed and connected to the water inlet of the water tank 3. The control terminal of the electric ball valve 14 is connected to an external control system via a wire, and can receive control signals to switch the on / off state of the two corresponding water inlet pipes. The electric ball valve 14 uses a valve body made of engineering plastic or stainless steel to adapt to the needs of different test media.

[0022] As shown in the figure, the frame 1 has a rectangular opening corresponding to the area of ​​the internal core component. The observation window 15 is fixed to the rectangular opening with bolts, and a sealing ring is provided between the observation window 15 and the frame 1 to achieve a seal. The observation window 15 is made of transparent tempered glass, and its thickness is adapted to the protection strength requirements of the frame 1. The observation window 15 and the frame 1 work together to form a visual protection structure.

[0023] As shown in the figure, the mounting bracket 16 is an integrated metal frame 1 structure. Its top is provided with threaded holes corresponding to the bottom mounting holes of the vertical pump 5 and the two vertical pumps 101. The vertical pump 5 and the two vertical pumps 101 are fixed to the top of the mounting bracket 16 by bolts. The bottom of the mounting bracket 16 is fixed to the bottom support inside the frame 1 by welding or expansion bolts.

[0024] It should be noted that the above electrical components are all existing technology products. They are selected, installed and debugged by those skilled in the art according to the needs of use to ensure that all electrical appliances can work normally. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be known by those skilled in the art through technical manuals or conventional experimental methods. The applicant does not impose any specific restrictions here.

[0025] In this device, the test medium (such as water) stored in the water tank 3 enters the system through the inlet pipe 2. The vertical pump 5 starts and transports the medium in the water tank 3 to the flow pool 4 for buffering and pressure stabilization through the pipeline 1. To ensure the accuracy of subsequent tests, the medium will first flow through the triple filter 9 before entering the detection stage. The multi-stage filtration structure effectively removes particulate impurities, suspended solids and other contaminants mixed in the medium, preventing impurities from entering the subsequent detection components or the tested pipeline.

[0026] The pretreated clean medium, in conjunction with the nitrogen filling system (the device is adapted to the nitrogen sealing pipeline interface, not shown), injects nitrogen into the multi-path pipeline to complete the nitrogen sealing filling process of the tested branch. At this time, the two water tanks 8 serve as medium circulation or buffer units, powered by the vertical pump 101 of the drive unit 10, and the medium circulates between the water tanks 8 and the filter 9 via the pipeline 102.

[0027] After nitrogen sealing is completed, the system enters the pressure holding stage, and relevant pipeline valves are closed to form a closed test environment. During this process, the five-fold detection device 6 is activated simultaneously to monitor key parameters such as pressure and sealing performance of each passage in real time; at the same time, the pressure transmitter 11 installed on one side of the filter 9 can accurately collect pressure data of each passage and provide real-time feedback on the pressure holding status. If any abnormalities such as pressure leakage occur, the transmitter will detect them.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-channel nitrogen-sealing pressure holding test integrated device, characterized in that, include: The frame (1) has several water inlet pipes (2) fixedly installed inside by brackets, and one end of each water inlet pipe (2) is connected to a water tank (3). The water tank (3) is connected to a flow pool (4) through a pipe, and a vertical pump (5) is installed in the pipe. The flow pool (4) is connected to a five-fold detection device (6) via a pipe on one side, and the five-fold detection device (6) is connected to a three-fold filter element (7) via a pipe on the other side, which is connected to two water tanks (8). Each of the two water tanks (8) has a filter (9) installed on one side via a drive unit (10).

2. The multi-channel nitrogen-sealing pressure holding test integrated device according to claim 1, characterized in that: The drive unit (10) includes a vertical pump (101) and a pipe (102). One end of the two pipes (102) is connected to the filter (9), and the other end is connected to two water tanks (8) respectively.

3. The multi-channel nitrogen-sealing pressure holding test integrated device according to claim 2, characterized in that: Several pressure transmitters (11) are installed on one side of the filter (9) through a pipe with transmitters (11).

4. The multi-channel nitrogen-sealing pressure holding test integrated device according to claim 1, characterized in that: The bottom of the water tank (3) is provided with a delivery pipe (13) with a pneumatic ball valve (12), and the delivery pipe (13) is connected to the five-fold detection device (6).

5. The multi-channel nitrogen-sealing pressure holding test integrated device according to claim 1, characterized in that: Several water inlet pipes (2) are equipped with electric ball valves (14).

6. The multi-channel nitrogen-sealing pressure holding test integrated device according to claim 1, characterized in that: An observation window (15) is provided on one side of the frame (1).

7. The multi-channel nitrogen-sealing pressure holding test integrated device according to claim 1, characterized in that: The bottom of the vertical pump 1 (5) and the two vertical pumps 2 (101) are fixedly installed with mounting brackets (16), and the mounting brackets (16) are fixedly installed inside the frame (1).

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