Mechanical seal leakage detection device and water pump

Abstract

The utility model belongs to the technical field of water pumps, and particularly relates to a mechanical seal leakage detection device and a water pump, and the mechanical seal leakage detection device comprises a pipe body which is used for introducing liquid leaked from a mechanical seal in the water pump; the pipe joint is used for connecting the pipe body to the water pump; the humidity sensor is arranged at the side part of the pipe body and is used for detecting the liquid condition in the pipe body so as to obtain liquid leakage information; the drainage switch is arranged below the humidity sensor at intervals, and the drainage switch is normally closed and used for sealing the bottom of the pipe body. The mechanical seal leakage detection device is externally connected to the drainage cavity of the water pump, and is simple in structure, low in cost and wide in application range. According to the mechanical seal leakage detection device, the drainage switches are arranged below the humidity sensor at intervals, when the water level of liquid accumulated in the pipe body rises to the humidity sensor, the humidity sensor can detect liquid leakage information, and then the situations of false detection of the humidity sensor and manual missing detection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water pumps, in particular to a mechanical seal leakage detection device and a water pump. Background Art

[0002] Water pumps, as general industrial products, are used in various industries and are closely related to our daily lives, such as domestic water, heating systems, air conditioning circulating water systems, and national water intake and diversion projects. Centrifugal pumps, with their wide flow and head range and relatively stable operation, are widely used in these areas. However, mechanical seal leakage is a common water pump failure, which can affect the normal operation of the equipment and changes in operating conditions, and in severe cases, can cause equipment failure and property damage.

[0003] In traditional water pumps, mechanical seal leakage is usually inspected manually by visual inspection. Maintenance personnel regularly or irregularly inspect the pump's mechanical seal for leakage. However, manual visual inspection is prone to missed inspections, and prolonged mechanical seal leakage may cause equipment failure and property loss. Utility Model Content

[0004] In order to improve the problem that mechanical seal leakage of a water pump is easily missed, this embodiment provides a mechanical seal leakage detection device and a water pump.

[0005] According to an embodiment of the present invention, a first aspect provides a mechanical seal leakage detection device, comprising:

[0006] The pipe body is used to introduce the liquid leaking from the mechanical seal in the water pump;

[0007] a pipe joint, used to connect the pipe body to the water pump;

[0008] A humidity sensor is provided on the side of the tube body and is used to detect the liquid condition in the tube body to obtain leakage information;

[0009] A drainage switch is spaced apart and arranged below the humidity sensor. The drainage switch is normally closed and is used to seal the bottom of the tube body.

[0010] In some embodiments, the drainage switch is a solenoid valve, which is opened after the humidity sensor obtains leakage information to open the bottom of the tube body.

[0011] In some embodiments, the tube body is a three-way tube, which includes a first tube opening, a second tube opening, and a third tube opening. The first tube opening is located at the top to install the pipe joint, the second tube opening is located on the side to install the humidity sensor, and the third tube opening is located at the bottom to install the drain switch.

[0012] In some embodiments, the pipe joint and / or the pipe body and / or the humidity sensor and / or the drain switch are standard parts.

[0013] In some embodiments, the pipe connector is a quick-connect connector.

[0014] In some embodiments, a drain pipe connected to the drain switch is further included, and the drain pipe is used to drain the liquid accumulated in the pipe body.

[0015] In some embodiments, according to an embodiment of the present utility model, a second aspect provides a water pump, comprising a pump body, a pump cover, an impeller, a shaft and a control unit;

[0016] A pump chamber is formed between one side of the pump cover and the pump body, the shaft passes through the pump cover and is connected to the impeller in the pump chamber, and a mechanical seal assembly is provided between the shaft and the pump cover; a drainage chamber is formed on the other side of the pump cover, a drainage port is provided at the bottom of the drainage chamber, and the pump chamber and the drainage chamber are separated by the mechanical seal assembly;

[0017] It also includes the aforementioned mechanical seal leakage detection device, which is electrically connected to the control unit, the pipe joint in the mechanical seal leakage detection device is connected to the drain outlet, and the humidity sensor in the mechanical seal leakage detection device transmits the acquired leakage information to the control unit.

[0018] In some embodiments, the drainage switch is a solenoid valve, which is electrically connected to the control unit. The control unit controls the solenoid valve to open based on the leakage information.

[0019] In some embodiments, an alarm device electrically connected to the control unit is further included, and the control unit controls the alarm device to turn on based on the leakage information.

[0020] In some embodiments, the alarm device includes at least one of a buzzer, a warning light, a display screen, and a wireless communicator.

[0021] This mechanical seal leakage detection device is externally connected to the drain chamber of a water pump, adding automatic detection functionality without changing the pump's original structure. It features a simple structure, low cost, and wide applicability. The mechanical seal leakage detection device positions the drain switch below the humidity sensor, creating a height difference between the two. The space between the drain switch and the humidity sensor within the pipe allows for the storage of some liquid. When the level of the accumulated liquid within the pipe rises to the humidity sensor, the humidity sensor detects the leak, thereby mitigating false detections by the humidity sensor and manual omissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of a mechanical seal leakage detection device installed on an end suction pump;

[0023] Figure 2 This is a structural diagram of a mechanical seal leakage detection device installed on a double-suction pump;

[0024] Figure 3 Schematic diagram of the structure of the mechanical seal leakage detection device of this embodiment;

[0025] Figure 4 This is a schematic diagram of the electrical connection between the water pump and the mechanical seal leakage detection device.

[0026] In the figure: pump body 10; pump cover 11; impeller 12; shaft 13; mechanical seal assembly 14; pump chamber 15; drainage chamber 16; pipe body 20; first pipe opening 21; second pipe opening 22; third pipe opening 23; pipe joint 30; humidity sensor 40; drainage switch 50; drainage pipe 60. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] The structures, proportions, sizes, etc. depicted in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by people familiar with this technology. They are not intended to limit the conditions under which the present invention can be implemented. Any structural modifications, changes in proportional relationships, or adjustments in size should still fall within the scope of the technical contents disclosed in this utility model without affecting the effects and objectives that can be achieved by the present utility model.

[0029] Terms such as "upper," "lower," "left," "right," "center," "longitudinal," "transverse," "horizontal," "inner," "outer," "radial," and "circumferential" used in this specification to indicate positions or locations are based on those shown in the accompanying drawings and are intended solely for ease of description. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] like Figure 1 and Figure 2As shown, this embodiment discloses a water pump, which includes a pump body 10, a pump cover 11, an impeller 12, a shaft 13 and a control unit for controlling the opening and closing of the water pump. A pump chamber 15 is formed between one side of the pump cover 11 and the pump body 10, and a drainage chamber 16 is formed on the other side of the pump cover 11. The impeller 12 is rotatably arranged in the pump chamber 15. The shaft 13 passes through the pump cover 11 and extends into the pump chamber 15 to be connected to the impeller 12 to transmit torque to the impeller 12. A mechanical seal assembly 14 is provided between the shaft 13 and the pump cover 11. The mechanical seal assembly 14 separates the pump chamber 15 from the drainage chamber 16. A drainage port is provided at the bottom of the drainage chamber 16. The liquid in the pump chamber 15 leaks into the drainage chamber 16 through the mechanical seal assembly 14 and is discharged from the drainage port in the drainage chamber 16. It should be noted that the water pump of this embodiment is prior art, and the specific structure and operation mode of the components of the water pump are prior art, which will not be repeated in this embodiment.

[0031] The water pump of this embodiment further includes a mechanical seal leakage detection device and an alarm device electrically connected to the control unit. The mechanical seal leakage detection device is arranged at the drain port in the drain chamber 16. Figure 3 The mechanical seal leakage detection device includes a tube body 20, a pipe joint 30 disposed on the tube body 20, a humidity sensor 40, and a drain switch 50. The pipe joint 30 of this embodiment is preferably disposed at the top of the tube body 20. The tube body 20 is connected to the drain port of the water pump via the pipe joint 30, allowing liquid in the drain chamber 16 to enter the tube body 20. The pipe joint 30 is preferably a quick-connect connector for quick assembly and disassembly. Since quick-connect connectors are conventional technology and need to be compatible with the drain port of the water pump, they are not described in detail in this embodiment.

[0032] See Figure 3 and Figure 4 In this embodiment, a humidity sensor 40 is fixedly mounted on the side of the tube body 20. This humidity sensor 40 detects the liquid in the tube body 20 to obtain leakage information. The humidity sensor 40 transmits this leakage information to the control unit, which activates an alarm based on the leakage information to alert the user for troubleshooting. This embodiment's alarm device includes one or more of a conventional buzzer, warning light, display, and wireless communicator to ensure that the user is aware of any mechanical seal leakage.

[0033] In this embodiment, the drain switch 50 is spaced below the humidity sensor 40. It is normally closed to seal the bottom of the tube 20, allowing liquid to accumulate within the tube 20. The drain switch 50 is preferably a solenoid valve electrically connected to the humidity sensor 40. The solenoid valve activates upon detecting a liquid leakage from the humidity sensor 40, opening the bottom of the tube 20 and automatically draining the accumulated liquid. It should be noted that the drain switch 50 can also be configured as a conventional mechanical switch, manually opened and closed, as needed.

[0034] The tube body 20 of this embodiment is preferably a tee tube, comprising a first opening 21, a second opening 22, and a third opening 23. The first opening 21 is located at the top for mounting a pipe joint 30, the second opening 22 is located on the side for mounting a humidity sensor 40, and the third opening 23 is located at the bottom for mounting a drain switch 50. The three openings of the tee tube allow for corresponding mounting of the pipe joint 30, humidity sensor 40, and drain switch 50, providing ease of use. The tube body 20 of some embodiments can also be designed in other shapes to meet component installation requirements.

[0035] The mechanical seal leakage detection device of this embodiment further includes a drain pipe 60 connected to a drain switch 50. The drain pipe 60 is used to drain liquid accumulated in the pipe body 20 to the outside. In the mechanical seal leakage detection device of this embodiment, the pipe joint 30 and / or the pipe body 20 and / or the humidity sensor 40 and / or the drain switch 50 can be made of standard parts with suitable dimensions, which helps further reduce costs.

[0036] The mechanical seal leakage detection device of this embodiment is connected to the drainage chamber 16 of the water pump in an external manner, and can add an automatic detection function without changing the original structure of the water pump. Figure 1 The end suction pump shown in Figure 2 The double-suction pump shown in the figure and other applicable water pumps in the prior art can be installed with a mechanical seal leakage detection device, which has a simple structure, low cost and a wide range of applications.

[0037] In this embodiment of the mechanical seal leakage detection device, the drain switch 50 is spaced below the humidity sensor 40, creating a height difference between the drain switch 50 and the humidity sensor 40. This allows the space between the drain switch 50 and the humidity sensor 40 within the tube 20 to store some liquid. When the level of the liquid accumulated within the tube 20 rises to the humidity sensor 40, the humidity sensor 40 detects the leak, thereby reducing the risk of false detections by the humidity sensor 40 and manual omissions.

[0038] The humidity sensor 40 of this embodiment transmits the acquired leakage information to the control unit. The control unit controls the alarm device and the solenoid valve to open based on the leakage information. The alarm device can remind the user of the leakage, and the solenoid valve can automatically discharge the liquid accumulated in the tube body 20.

[0039] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A mechanical seal leakage detection device, characterized in that: include: The pipe body (20) is used to introduce the liquid leaked from the mechanical seal in the water pump; a pipe joint (30) for connecting the pipe body (20) to the water pump; a humidity sensor (40), arranged on a side of the tube body (20), for detecting the condition of the liquid in the tube body (20) to obtain leakage information; A drainage switch (50) is spaced apart and arranged below the humidity sensor (40). The drainage switch (50) is normally closed and is used to seal the bottom of the tube body (20).

2. The mechanical seal leakage detection device according to claim 1, characterized in that: The drainage switch (50) is a solenoid valve, which is opened after the humidity sensor (40) obtains liquid leakage information, and is used to open the bottom of the tube body (20).

3. The mechanical seal leakage detection device according to claim 1 or 2, characterized in that: The pipe body (20) is a three-way pipe, comprising a first pipe opening (21), a second pipe opening (22) and a third pipe opening (23), wherein the first pipe opening (21) is located at the top for installing the pipe joint (30), the second pipe opening (22) is located at the side for installing the humidity sensor (40), and the third pipe opening (23) is located at the bottom for installing the drain switch (50).

4. The mechanical seal leakage detection device according to claim 1 or 2, characterized in that: The pipe joint (30) and / or the pipe body (20) and / or the humidity sensor (40) and / or the drain switch (50) are standard parts.

5. The mechanical seal leakage detection device according to claim 1 or 2, characterized in that: The pipe joint (30) is a quick-connect joint.

6. The mechanical seal leakage detection device according to claim 1 or 2, characterized in that: It also includes a drain pipe (60) connected to the drain switch (50), and the drain pipe (60) is used to drain the liquid accumulated in the pipe body (20).

7. A water pump, comprising a pump body (10), a pump cover (11), an impeller (12), a shaft (13) and a control unit; a pump chamber (15) is formed between one side of the pump cover (11) and the pump body (10); the shaft (13) passes through the pump cover (11) and is connected to the impeller (12) in the pump chamber (15); a mechanical seal assembly (14) is provided between the shaft (13) and the pump cover (11); a drainage chamber (16) is formed on the other side of the pump cover (11); a drainage port is provided at the bottom of the drainage chamber (16); the pump chamber (15) and the drainage chamber (16) are separated by the mechanical seal assembly (14), characterized in that: It also includes the mechanical seal leakage detection device according to any one of claims 1 to 4, wherein the mechanical seal leakage detection device is electrically connected to the control unit, the pipe joint (30) in the mechanical seal leakage detection device is connected to the drain outlet, and the humidity sensor (40) in the mechanical seal leakage detection device transmits the acquired leakage information to the control unit.

8. The water pump according to claim 7, characterized in that: The drainage switch (50) is a solenoid valve, which is electrically connected to the control unit. The control unit controls the solenoid valve to open based on the liquid leakage information.

9. The water pump according to claim 7 or 8, characterized in that: It also includes an alarm device electrically connected to the control unit, and the control unit controls the alarm device to turn on based on the leakage information.

10. The water pump according to claim 9, characterized in that: The alarm device includes at least one of a buzzer, a warning light, a display screen and a wireless communicator.

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