An underwater dynamic seal monitoring and flushing device

Abstract

This invention discloses an underwater dynamic seal monitoring and flushing device, comprising a sealing housing and a first suction pump, a first check valve, a collection tank, a liquid level sensor, a second suction pump, and a second check valve arranged sequentially within the sealing housing. It also includes a discharge pipeline connecting the sealing cavity and the first suction pump, with a flushing fluid / compressed air inlet on the discharge pipeline, connected to an air control unit and a flushing unit storing the flushing fluid via a first solenoid valve and a second solenoid valve, respectively. The suction pump, collection tank, liquid level sensor, and discharge pipeline of this invention enable real-time monitoring of leakage in the dynamic seal device, effectively assessing sealing performance and seal life, and avoiding serious consequences from seal failure. Simultaneously, the flushing device of this invention provides good cooling and lubrication conditions for the dynamic seal device, contributing to an extended seal life.

Description

Technical Field

[0001] This invention relates to the field of sealing technology, specifically to an underwater dynamic seal monitoring and flushing device. Background Technology

[0002] There is a large demand for dynamic sealing devices in the shipbuilding and various industrial sectors, but most existing traditional underwater dynamic sealing devices lack the means to monitor leakage.

[0003] Leakage rate is one of the most important indicators for measuring the sealing performance of a mechanical seal, and it is also one of the most direct parameters for characterizing whether a sealing device has failed.

[0004] Real-time leakage monitoring can serve as an important basis for predicting seal life, thus preventing serious damage to the main equipment due to seal failure. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, this invention proposes an underwater dynamic seal monitoring and flushing device, which solves the problems by combining a collection tank, a liquid level sensor, a suction pump, a one-way valve, an air control unit, a flushing unit, a solenoid valve, and a discharge pipeline.

[0006] The technical solution adopted by this invention to solve its technical problem is: an underwater dynamic seal monitoring and flushing device, including a sealing shell and a first suction pump, a first check valve, a collection tank, a liquid level sensor, a second suction pump, and a second check valve arranged sequentially within the sealing shell; it also includes a sealing cavity and a discharge pipeline connecting the sealing cavity and the first suction pump; the discharge pipeline is provided with a flushing liquid / compressed air inlet, and a first solenoid valve and a second solenoid valve are respectively connected to the flushing liquid / compressed air inlet; the first solenoid valve is connected to an air control unit, the air control unit is connected to an external air source, and the second solenoid valve is connected to a storage tank for the flushing liquid. The flushing unit: During flushing, the second solenoid valve opens, and the flushing unit fills the discharge pipeline with flushing fluid through the flushing fluid / compressed air inlet. After flushing, the first suction pump opens, drawing the flushing fluid in the sealed cavity into the collection tank for discharge to the outside. The second solenoid valve closes, and the first suction pump opens periodically, drawing the leaking liquid in the sealed cavity into the collection tank. The liquid level sensor measures and transmits the liquid level information in the collection tank. When the liquid reaches the alarm level, the second suction pump discharges the leaking liquid in the collection tank. At the same time, the first solenoid valve opens, and the air control unit fills the discharge pipeline with compressed air through the flushing fluid / compressed air inlet to blow out the leaking liquid in the sealed cavity.

[0007] The underwater dynamic seal monitoring and flushing device includes an air control unit comprising a monitoring module, a filtering module, and an adjustment module connected in sequence. It can filter, adjust, and monitor the pressure and flow rate of compressed air flowing into the sealing cavity. The adjusted compressed air is beneficial for blowing out the leakage from the sealing cavity.

[0008] The underwater dynamic seal monitoring and flushing device described above has a cylindrical cavity as its sealing housing.

[0009] The underwater dynamic seal monitoring and flushing device has an inlet hole, a drain hole, and a watertight aviation connector mounting hole on the outer wall of its sealing housing.

[0010] The beneficial effects of the present invention are: the suction pump, collection tank, liquid level sensor and discharge pipeline of the present invention can realize real-time monitoring of the leakage of dynamic sealing device, effectively evaluate the sealing performance and sealing life, and avoid the serious impact of sealing failure; at the same time, the flushing device of the present invention can provide good cooling and lubrication conditions for dynamic sealing device, which helps to extend the sealing life. Attached Figure Description

[0011] Figure 1 This is a structural schematic diagram of an embodiment of the present invention.

[0012] The labels on the attached drawings are as follows: 1—collection tank, 2—liquid level sensor, 3—second suction pump, 4—second check valve, 5—first suction pump, 6—first check valve, 7—sealed housing, 8—discharge pipeline, 9—sealed cavity, 10—air control unit, 11—flushing unit, 12—second solenoid valve, 13—first solenoid valve. Detailed Implementation

[0013] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. For example, although the various components in the drawings are drawn to a specific scale, these proportional relationships are merely exemplary, and those skilled in the art can adjust them as needed to adapt to specific application scenarios.

[0014] It should be noted that in the description of this invention, the terms "center", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the direction or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0015] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0016] Reference Figure 1 As shown, the present invention discloses an underwater dynamic seal monitoring and flushing device, including a sealing housing 7 and a first suction pump 5, a first one-way valve 6, a collection tank 1, a liquid level sensor 2, a second suction pump 3, and a second one-way valve 4 arranged sequentially within the sealing housing 7. It also includes a sealing cavity 9 and a discharge pipeline 8 connecting the sealing cavity 9 and the first suction pump 5. The first suction pump 5 draws the leaked liquid in the sealing cavity 9 into the collection tank 1, the liquid level sensor 2 measures and transmits the leaked liquid level information to the control console, and the second suction pump 3 discharges the leaked liquid in the collection tank 1 into an external sewage tank. The discharge pipeline 8 is equipped with a flushing liquid / compressed air inlet, which is connected to a first solenoid valve 13 and a second solenoid valve 12, respectively. The first solenoid valve 13 is connected to an air control unit 10, which is connected to an external air source. The second solenoid valve 12 is connected to a flushing unit 11 that stores the flushing liquid. During flushing, the second solenoid valve 12 is opened, and the flushing unit 11 fills the discharge pipeline 8 with flushing liquid through the flushing liquid / compressed air inlet. After flushing, the first suction pump 5 is opened to draw the flushing liquid in the sealed cavity 9 into the collection tank 1 and discharge it to the outside. 2. When closed, the first suction pump 5 is periodically turned on to draw the leaking liquid in the sealing cavity 9 into the collection tank 1. The liquid level sensor 2 measures and transmits the liquid level information in the collection tank 1. When the liquid reaches the alarm level, the second suction pump 3 discharges the leaking liquid from the collection tank 1. At the same time, the first solenoid valve 13 opens, and the air control unit 10 injects compressed air into the discharge pipe 8 through the flushing liquid / compressed air inlet to blow out the leaking liquid in the sealing cavity 9. The air control unit 10 includes a monitoring module, a filtering module, and a regulating module connected in sequence, which can filter, regulate, and monitor the pressure and flow rate of the compressed air flowing into the sealing cavity. The flushing unit 11 can store flushing liquid and can actively deliver flushing liquid to the sealing cavity 9. In this way, flushing liquid can be introduced into the discharge pipe 8. By selecting a suitable flushing liquid, good cooling and lubrication conditions can be provided for the dynamic sealing device, which helps to extend the seal life. Compressed air can also be introduced into the discharge pipe 8 to assist in the discharge of leaking liquid.

[0017] The air control unit 10 provides compressed air to quickly blow away any liquid, making it suitable for certain hazardous leaks. Therefore, it does not need to be activated when draining flushing fluid to the outside. The level sensor 2 is only activated when the leakage reaches a certain amount (XX ml / h). Since the flushing fluid is generated only once, but the leak is continuous, the leak can only be monitored after the flushing fluid has been completely drained. If fine flushing is required, the level sensor 2 is needed to calculate the cumulative amount of flushing fluid discharged to control the amount of flushing fluid used.

[0018] The sealing housing 7 can be a cylindrical cavity. An inlet hole, a outlet hole, and a watertight connector mounting hole are provided on the outer wall of the sealing housing 7. The first suction pump 5 is activated periodically to draw the leaked liquid from the sealing cavity 9 into the collection tank 1. The level sensor 2 measures the leakage volume per unit time to obtain the hourly leakage value of the dynamic sealing device, and transmits the signal to the control console through the watertight connector. When the level sensor 2 detects that the liquid in the collection tank 1 has reached the alarm level, the second suction pump 3 is activated to discharge the leaked liquid in the collection tank 1 to the outside.

[0019] The foregoing detailed an example of the present invention is intended to clarify that the scope of protection of the present invention should not be considered limited to the specific forms described in the embodiments. All equivalent variations and modifications made based on the concept of the present invention should fall within the patent coverage of the present invention.

Claims

1. An underwater dynamic seal monitoring and flushing device, characterized in that: The system includes a sealed housing (7) and a first suction pump (5), a first check valve (6), a collection tank (1), a liquid level sensor (2), a second suction pump (3), and a second check valve (4) arranged sequentially within the sealed housing (7). It also includes a sealed cavity (9) and a discharge pipeline (8) connecting the sealed cavity (9) and the first suction pump (5). The discharge pipeline (8) is provided with a flushing liquid / compressed air inlet, and a first solenoid valve (13) and a second solenoid valve (12) are connected to the inlet respectively. The first solenoid valve (13) is connected to an air control unit (10), and the air control unit (10) is connected to an external air source. The second solenoid valve (12) is connected to a flushing unit (11) that stores the flushing liquid. During flushing, the second solenoid valve (12) is opened, and the flushing unit (11) fills the discharge pipeline (8) with flushing liquid through the flushing liquid / compressed air inlet. After flushing, the first suction pump (5) is opened to draw the flushing liquid in the sealed cavity (9) into the collection tank (1) and discharge it to the outside. The second solenoid valve (12) is closed, and the first suction pump (5) is opened at regular intervals to draw the leaking liquid in the sealed cavity (9) into the collection tank (1). The liquid level sensor (2) measures and transmits the liquid level information of the leaking liquid in the collection tank (1). When the liquid reaches the alarm liquid level, the second suction pump (3) discharges the leaking liquid in the collection tank (1). At the same time, the first solenoid valve (13) is opened, and the air control unit (10) fills the discharge pipeline (8) with compressed air through the flushing liquid / compressed air inlet to blow out the leaking liquid in the sealed cavity (9).

2. The underwater dynamic seal monitoring and flushing device according to claim 1, characterized in that, The air control unit (10) includes a monitoring module, a filtering module and a regulating module connected in sequence.

3. The underwater dynamic seal monitoring and flushing device according to claim 1 or 2, characterized in that, The sealed housing (7) is a cylindrical cavity.

4. The underwater dynamic seal monitoring and flushing device according to claim 3, characterized in that, The outer wall of the sealed housing (7) is provided with a liquid inlet hole, a liquid outlet hole and a watertight aviation plug mounting hole.

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