Mechanical seal detection system

Abstract

The invention provides a detection system for a mechanical seal, which is used for detecting the wear condition of the mechanical seal, the mechanical seal comprises a moving ring and a static ring, and the detection system for the mechanical seal comprises a water pump, a water tank, a first pipeline and a second pipeline; an inlet and an outlet of the water pump are connected with the water tank through a first pipeline and a second pipeline respectively, so that water in the water tank can enter the water pump through the first pipeline and flow back into the water tank through the second pipeline under the driving of the water pump; the mechanical seal is arranged in the water pump, the movable ring and a shell of the water pump are relatively fixed, and the movable ring is connected to a pump shaft of the water pump and abuts against the static ring so that the movable ring can be driven by the pump shaft to rotate relative to the static ring. The device can accurately simulate the actual working environment of the mechanical seal, and further ensures that the detection result is accurate and reliable.

Description

Technical Field

[0001] The present invention relates to the technical field of seal detection, and particularly to a detection system for mechanical seals. Background Art

[0002] A mechanical seal is a rotating shaft structure that exerts a sealing performance by squeezing a stationary ring and a rotating ring through spring pressure and medium pressure, and is a decisive device for the fluid sealing performance of rotating shaft equipment. However, during the high-speed operation of the mechanical seal, heat is generated by the friction between the stationary ring and the rotating ring. Under the combined action of heat and force, the mechanical seal often exhibits phenomena such as deformation and wear, resulting in leakage and loss of the sealing function. Currently, the testing of mechanical seals is all completed on a constructed experimental platform, which is different from the actual use state of the mechanical seal in the pump body, so there is a defect that the test results are inaccurate. Summary of the Invention

[0003] The purpose of the present invention is to provide a detection system for mechanical seals, which can accurately simulate the actual working environment of the mechanical seal, thereby ensuring accurate and reliable detection results.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is:

[0005] A detection system for mechanical seals is used to detect the wear condition of the mechanical seal. The mechanical seal includes a rotating ring and a stationary ring. The detection system for the mechanical seal includes: a water pump, a water tank, a first pipeline, and a second pipeline;

[0006] The inlet and outlet of the water pump are respectively connected to the water tank through the first pipeline and the second pipeline, so that the water in the water tank can enter the water pump through the first pipeline and flow back into the water tank through the second pipeline under the drive of the water pump;

[0007] The mechanical seal is arranged in the water pump, and the rotating ring is relatively fixed to the housing of the water pump. The rotating ring is connected to the pump shaft of the water pump and abuts against the stationary ring, so that the rotating ring can rotate relative to the stationary ring under the drive of the pump shaft.

[0008] Preferably, it further includes a detection device;

[0009] The detection device is connected to the water pump and is used to monitor the operating parameters of the water pump in real time.

[0010] Preferably, the detection device includes a temperature acquisition device;

[0011] The temperature acquisition device is connected to the stationary ring and is used to monitor the temperature of the stationary ring in real time.

[0012] Preferably, the temperature acquisition device is a thermocouple.

[0013] Preferably, the detection device further includes a pressure acquisition device;

[0014] The pressure acquisition device is arranged on the second pipeline for real-time acquisition of the pressure at the outlet end of the water pump.

[0015] Preferably, the pressure acquisition device is a pressure gauge.

[0016] Preferably, a control valve is arranged on the second pipeline, and in the direction of the water flow in the second pipeline, the control valve is located downstream of the pressure acquisition device.

[0017] Preferably, it further includes a frame body;

[0018] Both the water tank and the water pump are fixedly arranged on the frame body.

[0019] Preferably, a drain hole is arranged at the bottom of the water tank, and a drain valve is arranged on the drain hole.

[0020] Preferably, a water outlet hole is arranged on the side wall of the water tank, and one end of the first pipeline far from the water pump is connected to the water outlet hole, so that the water in the water tank is discharged from the water outlet hole and flows to the water pump through the first pipeline;

[0021] And / or, the top of the water tank has an opening, and one end of the second pipeline far from the water pump is located directly above the opening, so that the water in the second pipeline can enter the water tank through the opening.

[0022] The detection system for the mechanical seal of the present invention can accurately simulate the actual working environment of the mechanical seal and then ensure the accuracy and reliability of the detection results by adopting the technical solution that the mechanical seal is arranged in the water pump, the dynamic ring is relatively fixed with the shell of the water pump, the dynamic ring is connected to the pump shaft of the water pump and abuts against the static ring, so that the dynamic ring can rotate relative to the static ring under the drive of the pump shaft. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of an embodiment of the detection system for the mechanical seal of the invention;

[0024] Figure 2 It is a schematic diagram of the setting of the mechanical seal in the water pump.

[0025] In the figure: 1 - mechanical seal; 2 - moving ring; 3 - stationary ring; 4 - water pump; 5 - water tank; 6 - first pipe body; 7 - second pipe body; 8 - detection device; 9 - temperature acquisition device; 10 - pressure acquisition device; 11 - control valve; 12 - frame; 13 - pump shaft; 14 - housing; 15 - drain hole; 16 - drain valve; 17 - water outlet hole; 18 - opening. Detailed implementation manners

[0026] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the detection system of the mechanical seal of the present invention will be further described in detail below in conjunction with 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 used to limit the present invention.

[0027] As Figure 1 , 2 shown, a detection system for a mechanical seal is used to detect the wear condition of the mechanical seal 1. The mechanical seal 1 includes a moving ring 2 and a stationary ring 3. The detection system of the mechanical seal 1 includes: a water pump 4, a water tank 5, a first pipeline 6 and a second pipeline 7. The inlet and outlet of the water pump 4 are respectively connected to the water tank 5 through the first pipeline 6 and the second pipeline 7, so that the water in the water tank 5 can enter the water pump 4 through the first pipeline 6 and flow back into the water tank 5 through the second pipeline 7 under the drive of the water pump 4. The mechanical seal 1 is arranged in the water pump 4, and the moving ring 2 is relatively fixed to the housing 14 of the water pump 4. The moving ring 2 is connected to the pump shaft 13 of the water pump 4 and abuts against the stationary ring 3, so that the moving ring 2 can rotate relative to the stationary ring 3 under the drive of the pump shaft 13. In actual work, the operator can turn on the water pump and observe the wear state of the moving ring 2 and the stationary ring 3 after it runs for a set time. In this way, the wear degree of the mechanical seal 1 can be detected under the condition completely the same as the actual working state, thereby ensuring the accuracy and reliability of the detection result.

[0028] In actual production, as Figure 1 shown, it further includes a frame 12; the water tank 5 and the water pump 4 are both fixedly arranged on the frame 12. Among them, a drain hole 15 is arranged at the bottom of the water tank 5, and a drain valve 16 is arranged on the drain hole 15. During actual use, the drain valve 16 is in a closed state, and at this time, the water in the water tank 5 will not flow out from the drain hole 15. When it is necessary to clean the inside of the water tank 5, the drain valve 16 can be opened so that the water in the water tank 5 can be discharged from the drain hole 15. Further, a water outlet hole 17 is arranged on the side wall of the water tank 5, and the end of the first pipeline 6 far away from the water pump 4 is connected to the water outlet hole 17, so that the water in the water tank 5 can be discharged from the water outlet hole 17 and flow to the water pump 4 through the first pipeline 6. And / or, the top of the water tank 5 has an opening 18, and the end of the second pipeline 7 far away from the water pump 4 is located directly above the opening 18, so that the water in the second pipeline 7 can enter the water tank 5 through the opening.

[0029] In an implementable embodiment, such as Figure 1 shown, it further includes a detection device 8. The detection device 8 is connected to the water pump 4 for real-time monitoring of the operating parameters of the water pump 4. In this way, during the operation of the water pump 4, the operator can record the operating parameters of the water pump 4 to observe the wear states of the dynamic seal ring 2 and the static seal ring 3 under different operating parameters of the water pump 4, and further obtain the influence of different operating parameters of the water pump 4 on the wear states of the dynamic seal ring 2 and the static seal ring 3.

[0030] Specifically, the detection device 8 includes a temperature acquisition device 9; the temperature acquisition device 9 is connected to the static seal ring 3 for real-time monitoring of the temperature of the static seal ring 3. In actual production, the temperature acquisition device 9 can be a thermocouple, but is not limited thereto, and can also be any other device that can achieve the purpose of the invention. At the same time, the detection device 8 further includes a pressure acquisition device 10; the pressure acquisition device 10 is arranged on the second pipeline 7 for real-time acquisition of the outlet pressure of the water pump 4. In actual production, the pressure acquisition device 10 can be a pressure gauge, but is not limited thereto, and can also be any other device that can achieve the purpose of the invention.

[0031] Furthermore, as Figure 1 shown, a control valve 11 is arranged on the second pipeline 7. In the direction of the water flow in the second pipeline 7, the control valve 11 is located downstream of the pressure acquisition device 10. By adopting such a technical solution, the outlet pressure of the water pump 4 can be adjusted by adjusting the opening degree of the control valve 11.

[0032] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A detection system for a mechanical seal, used to detect the wear condition of the mechanical seal (1), the mechanical seal (1) includes a dynamic ring (2) and a static ring (3), and is characterized in that: The detection system of the mechanical seal (1) includes: a water pump (4), a water tank (5), a first pipeline (6) and a second pipeline (7); The inlet and outlet of the water pump (4) are respectively connected to the water tank (5) through the first pipeline (6) and the second pipeline (7), so that the water in the water tank (5) can enter the water pump (4) through the first pipeline (6) and flow back into the water tank (5) through the second pipeline (7) under the drive of the water pump (4); The mechanical seal (1) is arranged in the water pump (4), and the dynamic ring (2) is relatively fixed to the housing (14) of the water pump (4). The dynamic ring (2) is connected to the pump shaft (13) of the water pump (4) and abuts against the static ring (3), so that the dynamic ring (2) can rotate relative to the static ring (3) under the drive of the pump shaft (13).

2. The detection system of the mechanical seal according to claim 1, characterized in that: It further includes a detection device (8); The detection device (8) is connected to the water pump (4) for real-time monitoring of the operating parameters of the water pump (4).

3. The detection system of the mechanical seal according to claim 2, characterized in that: The detection device (8) includes a temperature acquisition device (9); The temperature acquisition device (9) is connected to the static ring (3) for real-time monitoring of the temperature of the static ring (3).

4. The detection system of the mechanical seal according to claim 3, characterized in that: The temperature acquisition device (9) is a thermocouple.

5. The detection system of the mechanical seal according to claim 2, characterized in that: The detection device (8) further includes a pressure acquisition device (10); The pressure acquisition device (10) is arranged on the second pipeline (7) for real-time acquisition of the outlet end pressure of the water pump (4).

6. The detection system of the mechanical seal according to claim 5, characterized in that: The pressure acquisition device (10) is a pressure gauge.

7. The detection system of the mechanical seal according to claim 5, characterized in that: A control valve (11) is arranged on the second pipeline (7). In the direction of the water flow in the second pipeline (7), the control valve (11) is located downstream of the pressure acquisition device (10).

8. The detection system of the mechanical seal according to any one of claims 1 to 7, characterized in that: It further includes a frame body (12); Both the water tank (5) and the water pump (4) are fixedly arranged on the frame body (12).

9. The detection system of the mechanical seal according to any one of claims 1 to 7, characterized in that: A drain hole (15) is arranged at the bottom of the water tank (5), and a drain valve (16) is arranged on the drain hole (15).

10. The detection system of the mechanical seal according to any one of claims 1 to 7, characterized in that: An outlet hole (17) is provided on the side wall of the water tank (5), and one end of the first pipe (6) far from the water pump (4) is connected to the outlet hole (17), so that the water in the water tank (5) is discharged from the outlet hole (17) and flows to the water pump (4) through the first pipe (6); And / or, the top of the water tank (5) has an opening (18), and one end of the second pipe (7) far from the water pump (4) is directly above the opening (18), so that the water in the second pipe (7) can enter the water tank (5) through the opening.

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