Modularized shield tunneling machine sealing test structure with high compatibility and high space utilization rate

Abstract

The utility model discloses a modularized shield tunneling machine sealing test structure with high compatibility and high space utilization rate, which comprises a fixed frame and a rotating frame, and a mounting groove is arranged between the fixed frame and the rotating frame; the mounting ring is mounted in the mounting groove and comprises a fixed mounting ring and a rotary mounting ring, the fixed mounting ring is fixedly connected with the fixed frame, the rotary mounting ring is fixedly connected with the rotary frame, a first test cavity is formed between the fixed mounting ring and the rotary mounting ring, and a radial inner channel is formed in the mounting ring; outer channels connected with the radial channels are arranged in the fixing frame and the rotating frame. A sealing pressing plate is arranged between the fixed mounting ring and the rotary mounting ring, and a to-be-tested sealing ring is mounted through the sealing pressing plate, so that the to-be-tested sealing ring divides the first test cavity into a plurality of detection chambers. And the sealing pressing plate is mounted on the fixed mounting ring or the rotary mounting ring, so that the to-be-detected sealing ring can be mounted in the forward direction or the reverse direction. The problems that an existing sealing test is inconvenient to use and low in efficiency are solved.

Description

Technical Field

[0001] This utility model relates to the field of shield machine main drive sealing performance testing, specifically a modular shield machine sealing test structure with high compatibility and high space utilization. Background Technology

[0002] In tunnel boring machine (TBM) engineering, key components such as the main drive and the shield body are equipped with seals. The main drive needs to be sealed to block the oil inside the gearbox and to block excavation debris from entering the gearbox. Seals are also needed at the shield body hinges to prevent external mud and sand from entering and damaging internal components. During the initial R&D phase, design process, prototype testing, and maintenance / replacement stages, necessary reliability and lifespan tests are conducted on these seals. Commonly used seals for TBMs are finger seals and VD seals, typically made of polyurethane or rubber. They are usually annular seals, oriented axially or radially, and have a distinct front and back side. Sealing tests require the seal mounting surface, the seal itself, the seal pressure block, and the seal wear-resistant surface to form a sealed chamber. This chamber is then filled with gas / fluid at a certain pressure to simulate a real environment. Temperature sensors are also installed to test the seal's performance. For sealing tests, due to the requirements of the sealed chamber, pipeline, and the installation requirements of various sensors, existing shield machine sealing test benches generally install the seal on a fixed frame and the wear-resistant block on a rotating frame, or vice versa, and are equipped with a shell for sealing.

[0003] For example, Chinese patent CN106225996B discloses a sealing performance testing device that can test single-layer seals. This type of sealing installation structure can only test a single-size seal, has a single direction, and wastes a lot of space. The resulting test platform is generally large, which cannot effectively guarantee production efficiency and is inconvenient to use. Utility Model Content

[0004] The purpose of this invention is to provide a modular, highly compatible, and space-efficient shield machine sealing test structure to solve the problems of inconvenience and low efficiency of existing sealing test benches.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a modular, highly compatible, and space-utilizing shield machine sealing test structure, comprising:

[0006] A fixed frame and a rotating frame, wherein a mounting groove is provided between the fixed frame and the rotating frame;

[0007] Mounting rings are installed in mounting slots, and there are two or more of them. The mounting rings include fixed mounting rings and rotating mounting rings. The fixed mounting rings are fixedly connected to the fixed frame, and the rotating mounting rings are fixedly connected to the rotating frame. A first test cavity is provided between the fixed mounting rings and the rotating mounting rings. A radial inner channel is provided inside the mounting rings, and an outer channel connected to the radial channel is provided inside the fixed frame and the rotating frame.

[0008] As a further improvement to the above technical solution:

[0009] A sealing plate is provided between the fixed mounting ring and the rotating mounting ring. The sealing ring to be tested is installed through the sealing plate, so that the sealing ring to be tested divides the first test chamber into several test chambers. The radial inner channel is connected to the test chambers.

[0010] The sealing plate is installed on the fixed mounting ring or the rotating mounting ring, allowing the sealing ring to be installed in either the forward or reverse direction, or facing upward or downward. "Forward or reverse" here means the sealing rings to be installed in opposite directions, or multiple sealing rings to be installed in different orders. "Facing upward or downward" means the sealing rings to be installed simultaneously on the inner or outer side of the fixed or rotating mounting ring, or selectively. The installation of the sealing rings to be installed can include various combinations to achieve multiple measurements with a single machine.

[0011] A temperature sensor is installed on the mounting ring. The temperature sensor can detect the temperature of the sealing ring under test to ensure the integrity of the detection.

[0012] O-rings are provided on both sides of the mounting ring. The O-rings are used to prevent leakage of the channel.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] Modular design, highly compatible: Utilizing a modular shield tunneling machine seal testing mounting ring structure, it can be flexibly combined to adapt to sealing test requirements of different diameters and orientations. By nesting multiple mounting rings, the size and configuration of the testing device can be easily adjusted, enabling rapid installation and testing of various seal types.

[0015] High space utilization and compact structure: Compared to traditional sealing test benches, it significantly improves space utilization. Through ingenious design, the sealing mounting surface and wear-resistant surface are integrated on both sides of the mounting ring, reducing the need for additional space. The multi-ring nested system structure makes the entire test bench more compact, facilitating layout and operation.

[0016] Flexible test configuration with high adaptability: The system can be flexibly configured according to testing requirements. Whether using VD seals or finger seals, and whether axial or radial installation is possible, the nesting method and fixing position of the mounting rings can be adjusted. This design greatly enhances the adaptability of the testing device, meeting diverse testing requirements.

[0017] Accurately simulating real-world conditions ensures reliable test results: By creating internal piping and temperature sensor mounting threads on the mounting ring, the sealing operating conditions under real-world conditions can be accurately simulated. Through gas / fluid filling and temperature monitoring, key indicators such as seal pressure resistance and lifespan can be accurately evaluated, ensuring the reliability and validity of the test results.

[0018] Simplified installation process and improved efficiency: The simple structural design facilitates easy installation. Components such as mounting rings, sealing plates, and temperature sensors can be quickly positioned and secured using fixed threaded holes and mounting slots. This design significantly simplifies the installation process and improves testing efficiency.

[0019] In summary, the shield machine seal test installation ring structure of this utility model has significant advantages, not only improving the flexibility and efficiency of testing, but also reducing costs and space requirements, providing strong technical support for the reliability and lifespan testing of shield machine seals. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a side view of the rotating frame structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the mounting ring structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the mounting ring assembly structure of this utility model;

[0024] Figure 5 This is one of the schematic diagrams of a single test unit structure of this utility model;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the mounting ring assembly of this utility model;

[0026] Figure 7 This is the second schematic diagram of a single test unit structure of this utility model.

[0027] Reference numerals: 1. Fixing bracket; 2. Mounting ring; 3. Sealing ring to be tested; 4. Sealing pressure plate; 5. Rotating bracket; 6. Temperature sensor; 7. O-ring seal; 8. Pressure plate screw; 9. Mounting ring screw; 2.1. First mounting ring; 2.2. Second mounting ring; 2.3. Third mounting ring; 2.4. Fourth mounting ring; 2.5. Fifth mounting ring; 2.6. Sixth mounting ring; 2.7. Seventh mounting ring; 2.8. Eighth mounting ring; 2.9. Ninth mounting ring; 2.10. Tenth mounting ring; 3.1. VD sealing ring; 3.2. Radial finger sealing ring; 201. Outer surface; 202. Inner surface; 203. Mounting hole; 204. Radial inner channel; 205. Pressure plate mounting threaded hole; 206. Mounting ring fixing threaded hole. Detailed Implementation

[0028] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0029] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicating orientation or position, are based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] 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.

[0032] like Figures 1 to 7As shown, the modular, highly compatible, and space-efficient shield machine sealing test structure of this embodiment includes:

[0033] A fixed frame 1 and a rotating frame 5 are provided, and an installation groove is provided between the fixed frame 1 and the rotating frame 5;

[0034] Mounting ring 2 is installed in the mounting groove. The mounting ring includes a fixed mounting ring and a rotating mounting ring. The fixed mounting ring is fixedly connected to the fixing frame 1 by mounting ring screws 9, and the rotating mounting ring is fixedly connected to the rotating frame 5 by mounting ring screws 9. A first test chamber is provided between the fixed mounting ring and the rotating mounting ring. Mounting ring 2 includes an outer surface 201, an inner surface 202, a mounting hole 203, a radial inner channel 204, a pressure plate mounting threaded hole 205, and a mounting ring fixing threaded hole 206. The fixing frame 1 and the rotating frame 5 are provided with an outer channel connected to the radial channel. A sealing pressure plate 4 is provided between the fixed mounting ring and the rotating mounting ring. The sealing pressure plate 4 can be installed on different mounting rings to achieve different testing conditions; here, it mainly refers to the forward and reverse testing conditions. The sealing pressure plate 4 is installed on the mounting ring 2 by pressure plate screws 8. The sealing pressure plate 4 is used to hold the sealing ring 3 to be tested, dividing the first test chamber into several test chambers through the sealing ring 3. The radial inner channel communicates with the test chambers. This embodiment is divided into three chambers Q1, Q2, and Q3. The radial inner channel 204 includes three types of pipes F1-00, F2-00, and F3-00, corresponding to the three chambers respectively. Gas / fluid can be filled for sealing testing. Both the outer surface 201 and the inner surface 202 can serve as wear-resistant surfaces and mounting surfaces. The sealing pressure plate 4 is mounted on a fixed mounting ring or a rotating mounting ring. This embodiment shows 10 mounting rings 2 (as shown in Figures 2.1-2.10). This embodiment is compatible with installations in different directions. A temperature sensor 6 is provided on the mounting ring 2. O-rings 7 are provided on both sides of the mounting ring 2. The O-rings 7 are used to seal the installation gap and prevent leakage from the chambers or channels.

[0035] The test sealing ring 3 includes a VD sealing ring 3.1 and a radial finger sealing ring 3.2. By installing them in both directions, the active rotation performance of the test sealing ring 3 can be tested, and the performance test of the test sealing ring 3 not rotating when the wear-resistant surface rotates can be tested.

[0036] This utility model presents a modular, highly compatible, and space-efficient shield tunneling machine sealing test structure. It features a compact structure, good compatibility, and can meet sealing tests for different diameters and directions, while also achieving high space utilization. The above descriptions are merely embodiments of this utility model; common knowledge regarding specific structures and characteristics is not elaborated upon here. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A modular high-compatibility high-space-usage shield machine sealing test structure, characterized in that, The utility model relates to a sealing ring testing device, which comprises a fixed frame (1) and a rotating frame (5), a mounting groove is arranged between the fixed frame (1) and the rotating frame (5), a mounting ring (2) is mounted in the mounting groove, the mounting ring (2) comprises a fixed mounting ring and a rotating mounting ring, the fixed mounting ring is fixedly connected with the fixed frame (1), the rotating mounting ring is fixedly connected with the rotating frame (5), a first test cavity is arranged between the fixed mounting ring and the rotating mounting ring, a radial inner passage is arranged in the mounting ring (2), and outer passages connected with the radial passage are arranged in the fixed frame (1) and the rotating frame (5). A sealing pressing plate (4) is arranged between the fixed mounting ring and the rotating mounting ring, a sealing ring to be tested (3) is mounted through the sealing pressing plate (4), the sealing ring to be tested (3) divides the first test cavity into a plurality of detection chambers, and the radial inner passage is communicated with the detection chambers. The sealing pressing plate (4) is mounted on the fixed mounting ring or the rotating mounting ring, so that the sealing ring to be tested (3) is mounted in a forward or reverse direction, upward or downward.

2. The modular, highly compatible, high space utilization shield machine seal test structure of claim 1, wherein: A temperature sensor (6) is arranged on the mounting ring (2).

3. The modular, highly compatible, high space utilization shield machine seal test structure of claim 2, wherein: O-shaped sealing rings (7) are arranged on both sides of the mounting ring (2).

4. The modular, highly compatible, high space utilization shield machine sealing test structure according to claim 3, characterized in that: ​ 5. The modular, highly compatible, high space utilization shield machine seal test structure of claim 4, wherein: ​

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