A rotating seal test device

Abstract

The utility model discloses a kind of runner sealing test devices, including the test cover of detachable installation in the top of runner operating oil pipe, the oil guide pipe is arranged in central position on the test cover, the inner cavity of the oil guide pipe is communicated with runner operating oil pipe, a plurality of outer cavity sealing blocks are further provided on the test cover, the sealing cover is detachably connected in the top of runner operating oil pipe, the outer cavity sealing block is embedded in the outer cavity of runner operating oil pipe, the utility model has beneficial effect, one is can form reliable sealing with oil pipe interface quickly, establish closed pressure system, ensure that runner function test is carried out smoothly;Two is to completely eliminate high-pressure oil leakage risk, guarantee operation safety, avoid environmental pollution and oil waste;Three is, simple structure, easy to assemble and disassemble, greatly improve the maintenance efficiency, reduce maintenance cost;Four is that accurate matching design can effectively protect oil pipe interface thread, prolong equipment service life.

Description

Technical Field

[0001] This utility model relates to the field of turbine maintenance technology, and in particular to a turbine sealing test device. Background Technology

[0002] As a core hydraulic or power transmission component, the rotary drum is widely used in important industrial fields such as energy, heavy machinery, shipbuilding, and aerospace. It is usually connected to the subsequent hydraulic actuators or control systems through the operating oil pipes set at the top, forming a closed, pressurized complete oil circuit system. When the system is in normal use, the operating oil pipes are firmly connected to the downstream devices to ensure the smooth flow of pressurized oil, thereby providing stable driving force and precise control for the rotary drum and ensuring the normal operation of the entire equipment. However, during routine maintenance or when a malfunction occurs, the runner needs to be overhauled. The first step in this process is to disconnect the operating oil pipe located at the top of the runner from the downstream devices. After the overhaul is completed, functional testing must be performed to verify the repair effectiveness and whether the runner's performance has returned to normal. This testing procedure typically includes: connecting an external pressure oil pipe to the operating oil pipe, injecting pressurized oil into the internal cavity of the runner, and then driving the runner to operate in a specific mode to test key indicators such as its sealing performance, rotational flexibility, pressure holding capacity, and response characteristics.

[0003] Currently, this testing process faces a significant technical challenge: once the operating oil pipe is separated from the downstream equipment, its interface is completely exposed. This open state leads to two serious problems: first, during oil filling and testing, pressurized oil will directly spray and leak from this opening, making it impossible to establish the required working pressure for the test, thus preventing the impeller from being effectively driven and making the test impossible; second, it results in a huge waste of oil and serious pollution to the surrounding environment, while also posing a safety hazard of high-pressure oil spray causing injury.

[0004] At present, operators sometimes try to seal the pipes by temporarily wrapping them, wrapping them with sealing tape, or using mismatched plugs. However, these methods have defects such as poor sealing reliability, insufficient pressure resistance, inconvenient installation, and easy damage to pipe threads. They cannot meet the requirements of industrial testing scenarios with strict requirements for sealing, safety, and efficiency.

[0005] Therefore, there is an urgent need to develop a dedicated sealing cap for the operating oil pipe on the top of the runner. This device must be able to quickly and easily achieve a sealed connection with the oil pipe interface, possess excellent pressure resistance and reliability, thereby forming a temporary closed system during testing. This provides the basic conditions for the functional testing of the runner, effectively solving the pain points of existing technologies and improving the efficiency, safety, and environmental friendliness of maintenance work. Utility Model Content

[0006] This utility model patent aims to address the shortcomings of the prior art by providing a rotary wheel sealing test device to solve the technical problem that the rotary wheel cannot be sealed during functional testing in the prior art.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a rotary wheel sealing test device, including a test cover detachably installed on the top of the rotary wheel operating oil pipe, an oil guide pipe is provided at the center of the test cover, the oil guide pipe is connected to the inner cavity of the rotary wheel operating oil pipe, and the test cover is also provided with a plurality of outer cavity sealing blocks. The test cover is detachably connected to the top of the rotary wheel operating oil pipe, and the outer cavity sealing blocks are all embedded in the outer cavity of the rotary wheel operating oil pipe.

[0008] Preferably, the test cover is disc-shaped, and a plurality of sealing blocks are provided at the bottom of the test cover, with an oil delivery pipe vertically penetrating inside the sealing blocks.

[0009] Preferably, there are two sealing blocks, and the oil delivery pipes are all connected to the outer cavity of the rotary drum operating oil pipe.

[0010] Preferably, an oil-resistant rubber strip may be fitted and connected to the bottom of the oil pipeline, and the oil pipeline is connected to the outer cavity through the oil-resistant rubber strip.

[0011] Preferably, the test cover is further provided with several bolts, and the top of the rotary operating oil pipe is provided with several corresponding bolt holes. The test cover and the rotary operating oil pipe are detachably connected by bolts.

[0012] Preferably, the surfaces of the plurality of bolts are provided with connecting pipes.

[0013] Preferably, the top of the rotary operating oil pipe is provided with an annular sealing groove, and a sealing strip is installed in the sealing groove.

[0014] Preferably, the top ends of the oil guide pipe and the oil delivery pipe are provided with quick connectors for connecting to an external oil pump.

[0015] Preferably, the test cover is provided with a lifting ring for the installation and handling of tools.

[0016] Preferably, the test cover and the outer cavity sealing block are integrally machined from stainless steel.

[0017] The advantages of this invention are as follows: First, it can quickly form a reliable seal with the oil pipe interface, establishing a closed pressure system and ensuring the smooth conduct of the impeller function test. Second, it completely eliminates the risk of high-pressure oil leakage, ensuring operational safety and avoiding environmental pollution and oil waste. Third, its simple structure and convenient assembly and disassembly significantly improve maintenance efficiency and reduce maintenance costs. Fourth, its precise matching design effectively protects the oil pipe interface threads and extends the service life of the equipment. Fifth, it can be serialized for different interface specifications, has strong versatility, and has broad application value. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of the rotary drum operating tubing of this utility model; In the diagram: 1. Test cover; 2. Bolt; 3. Outer cavity sealing block; 4. Oil-resistant rubber strip; 5. Oil guide pipe; 6. Oil delivery pipe; 7. Sealing strip; 8. Rotary wheel operating oil pipe; 9. Inner cavity; 10. Outer cavity; 11. Connecting pipe. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1-2As shown, a rotary wheel sealing test device includes a test cover 1 detachably installed on the top of the rotary wheel operating oil pipe 8. An oil guide pipe 2 is disposed at the center of the test cover 1, and the oil guide pipe 2 communicates with the inner cavity 9 of the rotary wheel operating oil pipe 8. The test cover 1 is also provided with several outer cavity sealing blocks 3. The test cover 1 is detachably connected to the top of the rotary wheel operating oil pipe 8, and the outer cavity sealing blocks 3 are all embedded in the outer cavity 10 of the rotary wheel operating oil pipe 8. In this embodiment, the rotary wheel operating oil pipe 8 is existing technology. The purpose of this application is to design a device that matches the operating oil pipe 8 and can play a stable oil delivery and sealing role when the subsequent device is disconnected, so that the rotary wheel can perform normal functional testing without connecting to the subsequent device. This application is based on the rotary wheel... A test cover / or sealing cover matching the rotary rotary operating oil pipe 8 is provided at the top of the operating oil pipe 8. The main body of the operating oil pipe 8 is a cylindrical structure with a cylindrical inner cavity 9 at the center. The top of the inner cavity 9 is connected to the operating oil pipe 8 by several reinforcing ribs. The outer cavity 10 is between the operating oil pipe 8 and the inner cavity 9. In this embodiment, a corresponding oil guide pipe 2 is provided at the center of the test cover 1 to match the inner cavity 9 for inputting oil into the inner cavity. For better installation and sealing, this application provides several sealing blocks 3 / or guide blocks corresponding to the outer cavity 10 at the bottom of the test cover 1. During installation, the sealing blocks 3 play a guiding role, which facilitates installation and can increase the counterweight. The test cover 1 is stably connected to the top of the rotary rotary operating oil pipe 8 by embedding the sealing blocks 3 into the outer cavity 10.

[0022] Preferably, the test cover 1 is disc-shaped, and a plurality of sealing blocks 3 are provided at the bottom of the test cover 1, with an oil supply pipe 6 vertically penetrating through each sealing block 3; in this embodiment, as shown... Figure 2 The top of the rotary operating oil pipe 8 is divided into four arc-shaped holes by reinforcing ribs. Several sealing blocks 3 at the bottom of the test cover 1 are vertically connected to the inside of the arc-shaped hole sealing blocks 3, and oil supply pipes 6 are used to input oil into the outer cavity of the rotary operating oil pipe 8.

[0023] Preferably, there are two sealing blocks 3, and the oil supply pipes 6 are all connected to the outer cavity 10 of the rotary operating oil pipe 8; in this embodiment, there are at least two sealing blocks 3, and preferably two blocks arranged symmetrically.

[0024] Preferably, an oil-resistant rubber strip 4 can be sleeved and connected to the bottom of the oil supply pipe 6. The oil supply pipe 6 is connected to the outer cavity 10 through the oil-resistant rubber strip 4. In this embodiment, when the oil supply pipe 6 supplies oil to the outer cavity of the rotary operating oil pipe 8, an oil-resistant rubber strip 4 can be sleeved at the bottom of the oil supply pipe 6 to play an effective sealing, isolation, buffering and protection role in the environment in contact with oil and other media.

[0025] Preferably, the test cover 1 is further provided with a number of bolts 2, and the top of the rotary wheel operating oil pipe 8 is provided with a number of corresponding bolt holes. The test cover 1 and the rotary wheel operating oil pipe 8 are detachably connected by bolts 2. In this embodiment, the test cover 1 and the rotary wheel operating oil pipe 8 are detachably connected by bolts. In this embodiment, 12 sets of bolt holes are preferred.

[0026] Preferably, the surfaces of the plurality of bolts 2 are provided with connecting pipes 11; in this embodiment, in order to increase the sealing performance of the bolt connection, it is difficult to guarantee that there is no leakage by simply pressing the two flange faces together with the bolts. Therefore, the bolt connection connecting pipe is usually used in conjunction with a gasket. By applying a huge clamping force with the bolts, the gasket undergoes elastic or plastic deformation, filling the small unevenness on the sealing surfaces of the two flanges, thereby forming an effective seal and preventing the medium in the pipeline from leaking to the outside.

[0027] Preferably, the top of the rotary operating oil pipe 8 is provided with an annular sealing groove, and a sealing strip 7 is installed in the sealing groove to further prevent oil leakage from the rotary operating oil pipe 8 during the test. Specifically, an annular sealing groove is provided at the top of the rotary operating oil pipe 8, located at the top of the inner cavity tube. During installation, the sealing strip 7 is installed in the sealing groove, and the test cover 1 presses down to complete the pressing of the sealing strip 7.

[0028] Preferably, the top ends of the oil guide pipe 2 and the oil delivery pipe 6 are provided with quick connectors for connecting to an external oil pump.

[0029] Preferably, the test cover 1 is provided with a lifting ring for the installation and handling of tools.

[0030] Preferably, the test cover 1 and the outer cavity sealing block 3 are integrally machined from stainless steel.

[0031] The specific working method of this application is as follows: Before conducting the functional test of the rotor, the test cover 1 is first hoisted or manually moved to the top of the rotor operating oil pipe 8. After alignment, the test cover 1 is firmly installed on the rotor operating oil pipe 8 using bolts 2. During this process, the sealing strip 7 at the bottom of the test cover 1 is embedded in the annular sealing groove at the top of the rotor operating oil pipe 8, forming the first main seal. At the same time, the outer cavity sealing block 3 at the bottom of the test cover 1 is precisely inserted into the outer cavity 10 of the rotor operating oil pipe 8. After installation, the operator connects the external pressure oil pipe to the guide oil pipe 5 and the delivery oil pipe 6 at the top of the test cover through quick connectors. The guide oil pipe 5 communicates with its inner cavity 9 through the central channel of the rotor operating oil pipe 8, and is used to inject pressurized oil into the rotor. The delivery oil pipe 6 communicates with the outer cavity 10 through the channel inside the outer cavity sealing block 3, and is used to replenish oil to the outer cavity or establish control oil pressure as needed during the test. After the test, the oil pump is turned off, the external oil pipe is disassembled, and the bolts 2 are loosened, allowing the test cover 1 to be hoisted away, completing the entire testing process.

[0032] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A rotary seal testing device, characterized in that, The test cover (1) is detachably installed on the top of the rotary operating oil pipe (8). An oil guide pipe (5) is provided at the center of the test cover (1). The oil guide pipe (5) is connected to the inner cavity (9) of the rotary operating oil pipe (8). The test cover (1) is also provided with several outer cavity sealing blocks (3). The test cover (1) is detachably connected to the top of the rotary operating oil pipe (8). The outer cavity sealing blocks (3) are all embedded in the outer cavity (10) of the rotary operating oil pipe (8).

2. The rotary seal testing device according to claim 1, characterized in that, The test cover (1) is disc-shaped, and a number of sealing blocks (3) are provided at the bottom of the test cover (1). An oil delivery pipe (6) is vertically inserted through the sealing block (3).

3. The rotary seal testing device according to claim 2, characterized in that, The sealing block (3) consists of two pieces, and the oil delivery pipe (6) is connected to the outer cavity (10) of the rotary operating oil pipe (8).

4. The rotary seal testing device according to claim 3, characterized in that, The bottom of the oil pipe (6) can be fitted with an oil-resistant rubber strip (4), and the oil pipe (6) is connected to the outer cavity (10) through the oil-resistant rubber strip (4).

5. The rotary seal testing device according to claim 1, characterized in that, The test cover (1) is also provided with several bolts (2), and the top of the rotary operating oil pipe (8) is provided with several corresponding bolt holes. The test cover (1) and the rotary operating oil pipe (8) are detachably connected by bolts (2).

6. The rotary seal testing device according to claim 5, characterized in that, The surfaces of the bolts (2) are provided with connecting pipes (11).

7. The rotary seal testing device according to claim 1, characterized in that, The top of the rotary operating oil pipe (8) is provided with an annular sealing groove, and a sealing strip (7) is installed in the sealing groove.

8. The rotary seal test device according to claim 3, characterized in that, The top ends of the oil guide pipe (5) and the oil delivery pipe (6) are provided with quick connectors for connecting to an external oil pump.

9. The wheel seal testing device according to claim 7, characterized in that, The test cover (1) is equipped with a lifting ring for the installation and handling of tools.

10. The rotary seal testing device according to claim 1, characterized in that, The test cover (1) and the outer cavity sealing block (3) are integrally machined from stainless steel.

Images