A seal failure detection device

Abstract

The utility model relates to the technical field of hydraulic seal, specifically disclose a kind of sealing failure detection device, including hydraulic actuator body, its side surface is equipped with shaft seal flange body, the lower end side surface of shaft seal flange body is fixedly connected with installation support plate, the side surface between the side surface of hydraulic actuator body and shaft seal flange body is fixedly installed with actuator seal, the side surface of shaft seal flange body is equipped with installation connecting cavity, the inner wall of installation connecting cavity is fixedly installed with sealing failure probe.The sealing failure detection device is provided with sealing failure probe and failure sensor electronic element, which realizes the identification of equipment seal failure before the leakage of hydraulic oil can be detected outside the equipment, helps equipment user to prevent a trouble in the bud, realizes safe production, identifies risk before risk occurs, helps to realize lean equipment maintenance, thereby effectively saves cost.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic sealing technology, specifically a sealing failure detection device. Background Technology

[0002] Hydraulic actuators are devices that convert hydraulic energy into mechanical energy, playing a crucial role in numerous industrial and mechanical fields. When hydraulic oil is pressurized by a hydraulic pump, the pressurized oil is delivered to the hydraulic actuator. Taking a hydraulic cylinder as an example, the pressurized oil enters one chamber of the hydraulic cylinder, pushing the piston to move. The piston's movement can be linear, thus achieving linear motion functions such as pushing loads and lifting heavy objects. For hydraulic motors, pressurized oil enters its internal working chamber, causing the motor's output shaft to rotate, driving the load to rotate and output torque. Hydraulic actuators are key equipment for driving heavy-load machinery such as valves and cranes. After a certain period of use, the internal rubber seals of hydraulic actuators will age and fail, especially under high temperature or frequent high-pressure cycling conditions, which will accelerate the aging of the sealing materials. After the seals fail, the equipment will not work properly, and in severe cases, hydraulic oil will leak into the surrounding environment. When the leaked hydraulic oil comes into contact with high-temperature objects in the working environment, it will cause a fire.

[0003] Currently, there is no similar solution on the market that can detect seal failure inside the hydraulic actuator. Existing technologies mostly involve placing leakage sensors on the outside of the equipment, such as direct contact or indirect sensing sensors installed on the ground. These sensors are simple to place but cannot issue an alarm signal before hydraulic oil leaks into the working environment, and cannot effectively prevent accidents from happening. Utility Model Content

[0004] The purpose of this invention is to provide a sealing failure detection device to solve the problem mentioned in the background art that the existing technology mostly arranges leakage sensors on the outside of the equipment, such as direct contact or indirect induction sensors installed on the ground. These sensors are simple to arrange but cannot issue an alarm signal before hydraulic oil leaks into the working environment, and cannot effectively prevent accidents from happening.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing failure detection device, comprising a hydraulic actuator body, a shaft sealing flange body mounted on its side surface, a mounting support plate fixedly connected to the lower side surface of the shaft sealing flange body, an actuator seal fixedly installed between the side surface of the hydraulic actuator body and the side surface of the shaft sealing flange body, an installation connection cavity opened on the side surface of the shaft sealing flange body, a sealing failure probe fixedly installed on the inner wall of the installation connection cavity, a failure sensor electronic component fixedly connected to the upper surface of one end of the mounting support plate, an auxiliary linkage air pump fixedly connected to the upper surface of the mounting support plate, and an auxiliary mechanism provided inside the shaft sealing flange body, which introduces air into the conduction air inlet groove through the auxiliary linkage air pump and inflates the first sealing airbag and the second sealing airbag to seal.

[0006] Preferably, the actuator seal is annular and evenly arranged on the surface of the shaft seal flange body, and the actuator seal is embedded and fixed on the surface of the shaft seal flange body.

[0007] By adopting the above technical solution, the annular design of the actuator seal facilitates the sealing of the shaft sealing flange body, the uniformly arranged actuator seals increase the sealing effect, and the embedded fixing of the actuator seals to the surface of the shaft sealing flange body increases the stability of the installation.

[0008] Preferably, the mounting connection cavity is annular, one end of the sealing failure probe penetrates the mounting connection cavity, and the other end of the sealing failure probe penetrates the surface of the shaft seal flange body. The other end of the sealing failure probe is fixedly connected to the electronic components of the failure sensor.

[0009] By adopting the above technical solution, the ring design of the installation and connection cavity facilitates the installation and fixation of the sealing failure probe, and the connection and fixation between the sealing failure probe and the electronic components of the failure sensor facilitates signal transmission.

[0010] Preferably, the auxiliary mechanism includes a conductive air inlet groove, which is opened inside the shaft seal flange body. A first sealing airbag is fixedly connected to the inner wall of the mounting and connecting cavity. A communicating air groove is opened on the inner wall of the conductive air inlet groove. A second sealing airbag is fixedly connected to the inner wall of the mounting and connecting cavity.

[0011] By adopting the above technical solution, the air is easily guided to the first sealing airbag through the air inlet groove, so that the first sealing airbag expands after being inflated, making it easier for the first sealing airbag to fit against the outer surface of the shaft sealing flange body for sealing.

[0012] Preferably, one end of the conductive air inlet groove penetrates the surface of the shaft seal flange body, and one end of the conductive air inlet groove is connected to the air outlet of the auxiliary linkage air pump. The other end of the conductive air inlet groove penetrates the inner wall of the mounting connection cavity, and the other end of the conductive air inlet groove is connected to the first sealing airbag.

[0013] By adopting the above technical solution, the air inlet groove is connected to the air outlet of the auxiliary linkage air pump, which facilitates the auxiliary linkage air pump to introduce air into the air inlet groove, so that the air inlet groove guides the air to the first sealing airbag.

[0014] Preferably, both the first and second sealing airbags are annular designs, and the first and second sealing airbags are symmetrically arranged above and below the sealing failure probe.

[0015] By adopting the above technical solution, air is guided to the connecting air slot through the air inlet slot, so that the first sealing airbag and the second sealing airbag are inflated at the same time, which facilitates the inflation and expansion of both the first sealing airbag and the second sealing airbag.

[0016] Preferably, the connecting air groove is annular in design, and the connecting air groove is connected to the conductive air inlet groove and the second sealing air bag respectively.

[0017] By adopting the above technical solution, the annular design of the connecting air groove facilitates the air being guided to the second sealing airbag, which in turn facilitates the second sealing airbag and the first sealing airbag to fit into the shaft sealing flange body for sealing.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the sealing failure detection device:

[0019] 1. Equipped with sealing failure probes and failure sensor electronic components, it enables the identification of equipment seal failures before hydraulic oil leakage can be detected from outside the equipment. This helps equipment users to prevent problems before they occur, achieve safe production, identify risks before they happen, and help achieve lean equipment maintenance, thereby effectively saving costs.

[0020] 2. An auxiliary linkage air pump and a conductive air inlet groove are provided. When this device is working, the electronic components of the failure sensor transmit an electrical signal to the auxiliary linkage air pump, which then introduces air into the conductive air inlet groove. The conductive air inlet groove then guides the air to the first sealing airbag, causing the first sealing airbag to inflate and expand. This facilitates the first sealing airbag to adhere to the surface of the shaft seal flange body for auxiliary sealing, reducing oil leakage and increasing practicality.

[0021] 3. The device is equipped with a connecting air groove and a second sealing air bladder. When the device is working, the annular design of the connecting air groove allows some of the air in the conducting air groove to be introduced into the second sealing air bladder. This causes the second sealing air bladder to expand synchronously with the first sealing air bladder, making it easier for both the upper and lower sealing air bladders to expand and fit against the shaft seal flange body. This increases the auxiliary sealing effect and improves the practicality of the device. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall front sectional structure of this utility model;

[0023] Figure 2 This is a front view schematic diagram of the auxiliary linkage air pump of this utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the auxiliary linkage air pump of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the first sealing airbag of this utility model;

[0026] Figure 5 This is a three-dimensional cross-sectional view of the first sealing airbag of this utility model.

[0027] In the diagram: 1. Hydraulic actuator body; 2. Shaft seal flange body; 3. Mounting support plate; 4. Actuator seal; 5. Mounting connection cavity; 6. Seal failure probe; 7. Failure sensor electronic components; 8. Auxiliary linkage air pump; 9. Conductive air inlet groove; 10. First sealing airbag; 11. Connecting air groove; 12. Second sealing airbag. Detailed Implementation

[0028] 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.

[0029] Please see Figure 1-5This utility model provides a technical solution: a sealing failure detection device, including a hydraulic actuator body 1, a shaft sealing flange body 2, a mounting support plate 3, an actuator seal 4, a mounting connection cavity 5, a sealing failure probe 6, a failure sensor electronic component 7, an auxiliary linkage air pump 8, a conduction air inlet groove 9, a first sealing airbag 10, a connecting air groove 11, and a second sealing airbag 12. The hydraulic actuator body 1 has a shaft sealing flange body 2 mounted on its side surface. The mounting support plate 3 is fixedly connected to the lower side surface of the shaft sealing flange body 2. The actuator seal 4 has a ring design and is evenly arranged on the surface of the shaft sealing flange body 2. The actuator seal 4 is embedded and fixed on the surface of the shaft sealing flange body 2. When using this device, the actuator seal 4 is pressed against the outer surface of the hydraulic actuator body 1 through the shaft sealing flange body 2, which facilitates the sealing protection of the shaft sealing flange body 2 by the evenly arranged actuator seal 4, thereby increasing the sealing effect of this device. The sealing failure probe 6 is fixedly installed on the inner wall of the mounting connection cavity 5 and is fixedly connected to the failure sensor electronic component 7.

[0030] An actuator seal 4 is fixedly installed between the side surface of the hydraulic actuator body 1 and the side surface of the shaft sealing flange body 2. A mounting connection cavity 5 is formed on the side surface of the shaft sealing flange body 2. The mounting connection cavity 5 has an annular design. One end of the sealing failure probe 6 penetrates the mounting connection cavity 5 and also penetrates the surface of the shaft sealing flange body 2. The sealing failure probe 6 is fixedly connected to the failure sensor electronic component 7. The auxiliary mechanism includes a conductive air inlet groove 9, which is located inside the shaft sealing flange body 2. A first sealing airbag 10 is fixedly connected to the inner wall of the mounting connection cavity 5. A connecting air groove 1 is formed on the inner wall of the conductive air inlet groove 9. 1. A second sealing airbag 12 is fixedly connected to the inner wall of the mounting and connecting cavity 5. When the actuator seal 4 fails, hydraulic oil will leak into the area where the mounting and connecting cavity 5 is located, causing the seal failure probe 6 to come into contact with the oil, thereby causing a change in the capacitance parameter. Subsequently, the seal failure probe 6 transmits the parameter to the failure sensor electronic component 7, which will identify the hydraulic oil characteristic parameters and send an alarm signal. This allows personnel to detect the failure of the equipment seal before the hydraulic oil leak is detected outside the equipment, enabling equipment users to prevent problems before they occur, achieve safe production, identify risks before they occur, and facilitate lean equipment maintenance, thereby effectively saving costs.

[0031] A sealing failure probe 6 is fixedly installed on the inner wall of the mounting cavity 5. A failure sensor electronic component 7 is fixedly connected to the upper surface of one end of the mounting support plate 3. An auxiliary linkage air pump 8 is fixedly connected to the upper surface of the mounting support plate 3. One end of the conduction air inlet groove 9 penetrates the surface of the shaft seal flange body 2 and is connected to the air outlet of the auxiliary linkage air pump 8. The other end of the conduction air inlet groove 9 penetrates the inner wall of the mounting cavity 5 and is connected to the first sealing airbag 10. When the failure sensor electronic component 7 sends a signal, the failure sensor electronic component 7 starts the auxiliary linkage air pump 8, which introduces air into the conduction air inlet groove 9. This allows the conduction air inlet groove 9 to fill the first sealing airbag 10 with air, causing the first sealing airbag 10 to expand and fit against the outer surface of the shaft seal flange body 2, thereby providing auxiliary sealing for the shaft seal flange body 2 and reducing oil outflow contamination.

[0032] An auxiliary mechanism is provided inside the shaft seal flange body 2. This mechanism uses an auxiliary linkage air pump 8 to introduce air into the conduction air inlet groove 9, inflating the first sealing airbag 10 and the second sealing airbag 12 to achieve a seal. Both the first and second sealing airbags 10 and 12 are annular in design and are symmetrically positioned above and below the seal failure probe 6. The connecting air groove 11 is also annular and connects to both the conduction air inlet groove 9 and the second sealing airbag 12. After air is introduced into the conduction air inlet groove 9, some air enters the connecting air groove 11, causing the annular connecting air groove 11 to guide the air towards the second sealing airbag 12. This facilitates the inflation and expansion of the second sealing airbag 12, ensuring that both the first and second sealing airbags 10 and 12 seal the shaft seal flange body 2. This enhances the auxiliary sealing effect and improves the practicality of the device.

[0033] Working principle: When using this seal failure detection device, the actuator seal 4 is pressed against the hydraulic actuator body 1 through the shaft seal flange body 2 for sealing installation. After the actuator seal 4 fails, the oil flows to the installation connection cavity 5, so that the seal failure probe 6 sends a signal through the failure sensor electronic component 7. At the same time, the auxiliary linkage air pump 8 is started and inflates the conduction air inlet groove 9, so that air enters the first sealing airbag 10 and expands to fit the shaft seal flange body 2. At the same time, the air enters the second sealing airbag 12 through the connecting air groove 11, which facilitates the inflation of the second sealing airbag 12. This allows both the first sealing airbag 10 and the second sealing airbag 12 to provide auxiliary sealing for the shaft seal flange body 2, increasing the overall practicality.

[0034] 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 sealing failure detection device, comprising a hydraulic actuator body (1), a shaft sealing flange body (2) mounted on its side surface, wherein a mounting support plate (3) is fixedly connected to the lower side surface of the shaft sealing flange body (2), characterized in that: An actuator seal (4) is fixedly installed between the side surface of the hydraulic actuator body (1) and the side surface of the shaft sealing flange body (2). An installation connection cavity (5) is opened on the side surface of the shaft sealing flange body (2). A sealing failure probe (6) is fixedly installed on the inner wall of the installation connection cavity (5). A failure sensor electronic component (7) is fixedly connected to the upper surface of one end of the mounting support plate (3). An auxiliary linkage air pump (8) is fixedly connected to the upper surface of the mounting support plate (3). An auxiliary mechanism is provided inside the shaft sealing flange body (2). The auxiliary linkage air pump (8) introduces air into the conduction air inlet groove (9) and inflates the first sealing airbag (10) and the second sealing airbag (12) to seal them.

2. The sealing failure detection device according to claim 1, characterized in that: The actuator seal (4) is annular and is evenly arranged on the surface of the shaft sealing flange body (2). The actuator seal (4) is embedded and fixed on the surface of the shaft sealing flange body (2).

3. The sealing failure detection device according to claim 1, characterized in that: The mounting connection cavity (5) is annular. One end of the sealing failure probe (6) penetrates the mounting connection cavity (5) and the other end of the sealing failure probe (6) penetrates the surface of the shaft seal flange body (2). The other end of the sealing failure probe (6) is fixedly connected to the failure sensor electronic component (7).

4. The sealing failure detection device according to claim 1, characterized in that: The auxiliary mechanism includes a conductive air inlet groove (9), which is opened inside the shaft seal flange body (2). A first sealing airbag (10) is fixedly connected to the inner wall of the mounting and connecting cavity (5). A communicating air groove (11) is opened on the inner wall of the conductive air inlet groove (9). A second sealing airbag (12) is fixedly connected to the inner wall of the mounting and connecting cavity (5).

5. The sealing failure detection device according to claim 4, characterized in that: One end of the conductive air inlet groove (9) penetrates the surface of the shaft seal flange body (2), and one end of the conductive air inlet groove (9) is connected to the air outlet of the auxiliary linkage air pump (8). The other end of the conductive air inlet groove (9) penetrates the inner wall of the installation connection cavity (5), and the other end of the conductive air inlet groove (9) is connected to the first sealing air bag (10).

6. The sealing failure detection device according to claim 4, characterized in that: The first sealing airbag (10) and the second sealing airbag (12) are both annular designs, and the first sealing airbag (10) and the second sealing airbag (12) are symmetrically arranged above and below the sealing failure probe (6).

7. The sealing failure detection device according to claim 4, characterized in that: The connecting air groove (11) is annular in design, and the connecting air groove (11) is connected to the conducting air inlet groove (9) and the second sealing air bag (12) respectively.

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