Device for measuring leakage rate of mechanical seal of water feeding pump

Abstract

The utility model belongs to the technical field of mechanical seal leakage rate measurement, and discloses a device for measuring the mechanical seal leakage rate of a feed pump. The device comprises a base, a main measuring mechanism and an overflow mechanism, the main measuring mechanism comprises a main barrel body, a first measuring piece, a display screen and a first liquid drainage assembly, the main barrel body is fixed to the base, and a liquid injection opening of the main barrel body is used for introducing leakage liquid flowing out of the water feeding pump; an overflow port is formed in the side wall, close to the top end, of the main barrel body; the first measuring piece is fixed in the main barrel body, the first liquid discharging assembly comprises a first liquid discharging pipe and a first electromagnetic valve, and the first liquid discharging pipe is communicated with a liquid outlet in the bottom of the main barrel body; the first electromagnetic valve is arranged on the first liquid discharge pipe; the overflow mechanism comprises an overflow barrel and an overflow pipe, and the overflow barrel is fixed to the base and can display leakage amount data of leaked liquid. The leakage detection device can measure the leakage amount of the mechanical sealing structure of the water feeding pump in real time and display leakage amount data, and is high in reliability.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal leakage measurement technology, and in particular to a device for measuring the leakage of a water pump mechanical seal. Background Technology

[0002] With the continuous advancement of coal-fired power technology, a feedwater system with a medium-pressure heater has been gradually adopted to improve unit economy and reduce investment. This system involves multiple stages of medium-pressure heaters and several booster pumps arranged in series before the feedwater pump. Due to the vigorous development of new energy sources, thermal power units must participate in peak shaving to absorb the generated electricity. During deep peak shaving, the inlet pressure and temperature of the feedwater pump in this type of thermal power unit undergo significant changes, causing the feedwater pump with a shaft seal mechanical seal to experience substantial thermal and pressure shocks during operation.

[0003] When the mechanical seal of the feedwater pump adopts a dynamic groove type, it can meet the pressure requirements and solve the above-mentioned problems. This type of mechanical seal allows for a certain amount of leakage during feedwater pump operation, and the leakage must be kept within a certain range. If the leakage exceeds this range, the feedwater pump will malfunction, thus affecting the operation of the entire unit. To avoid feedwater pump failure, leakage is usually measured manually. However, manual operation cannot perform real-time measurement, which may lead to the inability to promptly detect mechanical seal failures during pump operation and provide timely feedback to the unit, resulting in significant economic losses. Utility Model Content

[0004] The purpose of this invention is to provide a water pump mechanical seal leakage measurement device, which can measure the leakage of the water pump mechanical seal structure in real time and display the leakage data, so as to avoid the inability to judge the situation in time when the mechanical seal structure fails during the operation of the water pump, and has high reliability.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A device for measuring the leakage of a water pump mechanical seal, comprising:

[0007] Base;

[0008] The main measuring mechanism includes a main tank, a first measuring element, a display screen, and a first drain assembly. The main tank is fixed to the base. The main tank has an injection port for introducing leaked liquid from the water pump, and an overflow port is provided on the side wall of the main tank near the top. The first measuring element is fixed inside the main tank and is used to measure the leakage amount of the leaked liquid inside the main tank. The display screen is communicatively connected to the first measuring element. The first drain assembly includes a first drain pipe and a first solenoid valve. The first drain pipe is connected to the outlet at the bottom of the main tank. The first solenoid valve is disposed on the first drain pipe and is communicatively connected to the first measuring element, and is used to control the flow of leaked liquid in the first drain pipe.

[0009] An overflow mechanism includes an overflow tank and an overflow pipe. The overflow tank is fixed to the base and can display the leakage amount data of the leaked liquid. One end of the overflow pipe is connected to the overflow port, and the other end of the overflow pipe is connected to the liquid inlet of the overflow tank.

[0010] In some possible implementations, the first drainage assembly further includes a first manual valve, which is disposed in the first drainage pipe and connected in series with the first solenoid valve, and is disposed relative to the first solenoid valve near the outlet of the main tank. The first manual valve is used to control the flow of leaked liquid in the first drainage pipe.

[0011] In some possible implementations, the first drainage assembly further includes a first bypass drainage pipe and a second manual valve. Both ends of the first bypass drainage pipe are connected to the first drainage pipe. The second manual valve is disposed on the first bypass drainage pipe and is connected in parallel with both the first solenoid valve and the first manual valve.

[0012] In some possible implementations, the overflow mechanism further includes a second drainage assembly, which includes a second drainage pipe and a third manual valve. The second drainage pipe is connected to the outlet at the bottom of the overflow tank. The third manual valve is disposed on the second drainage pipe and is used to control the flow of leaked liquid in the second drainage pipe.

[0013] In some possible implementations, the overflow mechanism further includes a second measuring element fixed inside the overflow tank for measuring the leakage amount of the leaking liquid inside the overflow tank and communicating with the display screen; the second drain assembly further includes a second solenoid valve disposed in the second drain pipe and connected in series with the third manual valve, and disposed away from the outlet of the overflow tank relative to the third manual valve, the second solenoid valve communicating with the second measuring element for controlling the on / off of the leaking liquid in the second drain pipe.

[0014] In some possible implementations, the main tank is equipped with a first magnetic level gauge and a first level gauge drain valve. The first magnetic level gauge is used to display the leakage amount of the leaking liquid in the main tank, and the first level gauge drain valve is used to control the flow of the leaking liquid in the first magnetic level gauge. Alternatively, the main tank is made of transparent material and is equipped with scale lines.

[0015] In some possible implementations, the overflow tank is equipped with a second magnetic level gauge and a second level gauge drain valve. The second magnetic level gauge is used to display the leakage amount of the leaking liquid in the overflow tank, and the second level gauge drain valve is used to control the flow of the leaking liquid in the second magnetic level gauge. Alternatively, the overflow tank is made of transparent material and has graduation lines.

[0016] In some possible implementations, the base is provided with casters at its bottom; and / or, the base is provided with lugs.

[0017] In some possible implementations, the main measuring mechanism further includes a connecting pipe, one end of which is configured to communicate with the leak port of the water supply pump, and the other end of which is configured to communicate with the injection port.

[0018] In some possible implementations, there are two main measuring mechanisms and two overflow mechanisms. In the two main measuring mechanisms, the two injection ports of the main tank are respectively used to introduce leakage liquid flowing out from both ends of the water pump. The two overflow mechanisms are arranged in a one-to-one correspondence with the two main measuring mechanisms.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides a water pump mechanical seal leakage measurement device, including a base, a main measuring mechanism, and an overflow mechanism. Leaking fluid from the water pump enters the main tank. The first measuring element can measure the leakage amount in the main tank in real time and feed the measurement result back to the display screen. The display screen can show the leakage data, enabling real-time measurement and display of the leakage amount of the water pump's mechanical seal structure, thus avoiding the inability to promptly assess the situation when the mechanical seal structure malfunctions during water pump operation. By setting a first solenoid valve and communicating with the first measuring element, the leaking fluid can be discharged through a first drain pipe, preventing the main tank from overflowing and affecting real-time leakage measurement. If the first solenoid valve malfunctions and no alarm is triggered, an overflow tank and overflow pipe allow the leaking fluid to enter the overflow tank. The overflow tank displays the leakage amount data, allowing for continued real-time measurement of the leakage fluid and improving the reliability of the measuring device. Attached Figure Description

[0021] Figure 1This is a front view of the water pump mechanical seal leakage measuring device provided by this utility model;

[0022] Figure 2 This is a left view of the water pump mechanical seal leakage measuring device provided by this utility model;

[0023] Figure 3 This is a top view of the water pump mechanical seal leakage measuring device provided by this utility model;

[0024] Figure 4 This is a schematic diagram of the assembly structure of the first drain pipe, the first solenoid valve, the first manual valve, the first bypass drain pipe, and the second manual valve involved in this utility model.

[0025] In the picture:

[0026] 1. Base; 11. Casters; 12. Lifting lugs;

[0027] 2. Main measuring mechanism; 21. Main tank body; 211. Liquid inlet; 212. First magnetic level gauge; 213. First level gauge drain valve; 22. First drain pipe; 23. First solenoid valve; 24. First manual valve; 25. First bypass drain pipe; 26. Second manual valve;

[0028] 3. Overflow mechanism; 31. Overflow tank; 311. Second magnetic level gauge; 312. Second level gauge drain valve; 32. Overflow pipe; 33. Second drain pipe; 34. Third manual valve; 35. Second solenoid valve. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0030] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0033] like Figures 1 to 4As shown, this utility model provides a device for measuring the leakage of a water pump mechanical seal, including a base 1, a main measuring mechanism 2, and an overflow mechanism 3. The main measuring mechanism 2 includes a main tank 21, a first measuring element, a display screen, and a first drainage assembly. The main tank 21 is fixed to the base 1. The injection port 211 of the main tank 21 is used to introduce the leakage liquid flowing out of the water pump. An overflow port is provided on the side wall of the main tank 21 near the top. The first measuring element is fixed inside the main tank 21 and is used to measure the leakage amount of the leakage liquid inside the main tank 21. The display screen communicates with the first measuring element. The main measuring mechanism 2 includes a first drain pipe 22 and a first solenoid valve 23. The first drain pipe 22 is connected to the outlet at the bottom of the main tank 21. The first solenoid valve 23 is located on the first drain pipe 22 and is connected to the first measuring element to control the flow of leaking liquid in the first drain pipe 22. The overflow mechanism 3 includes an overflow tank 31 and an overflow pipe 32. The overflow tank 31 is fixed to the base 1 and can display the leakage amount of the leaking liquid. One end of the overflow pipe 32 is connected to the overflow port, and the other end of the overflow pipe 32 is connected to the inlet of the overflow tank 31. Optionally, in this embodiment, the main measuring mechanism 2 also includes a first alarm. When the first solenoid valve 23 malfunctions, the first alarm is used to remind the staff to carry out maintenance and handling. Optionally, the water pump mechanical seal leakage measurement device also includes a DCS (distributed control system). The DCS control system is connected to the display screen, the first measuring element, and the first solenoid valve 23 and can display the leakage amount on the display screen in a visual digital format. Meanwhile, the DCS control system can trace the leakage amount of historical leaked fluid and display the changing leakage amount curve data on the display screen, making it easy to observe the changes in the leakage amount of leaked fluid and thus grasp the operation status of the mechanical seal structure of the water pump.

[0034] When leaking fluid from the water pump enters the main tank 21, the first measuring element can measure the leakage amount in the main tank 21 in real time and feed the measurement result back to the display screen. The display screen can show the leakage data, enabling real-time measurement and display of the leakage amount of the mechanical seal structure of the water pump, thus preventing the inability to promptly assess the situation in case of mechanical seal failure during water pump operation. When the first measuring element detects that the leakage fluid in the main tank 21 is at a set height, the first solenoid valve 23 opens, draining the leakage fluid through the first drain pipe 22, preventing the main tank 21 from overflowing and affecting real-time leakage measurement. If the first solenoid valve 23 malfunctions and the first alarm fails to alert personnel, causing the leakage fluid to be unable to drain from the first drain pipe 22, the overflow tank 31 and overflow pipe 32 allow the leakage fluid to enter the overflow tank 31, where the leakage amount is displayed, allowing for continued real-time measurement of the leakage fluid and improving the reliability of the measuring device.

[0035] Optionally, in this embodiment, the first drainage assembly further includes a first manual valve 24. The first manual valve 24 is disposed in the first drainage pipe 22 and connected in series with the first solenoid valve 23, and is positioned relative to the solenoid valve 23 near the outlet of the main tank 21. The first manual valve 24 is used to control the flow of leaking liquid in the first drainage pipe 22. When the operator discovers that the first solenoid valve 23 has malfunctioned, causing the leaking liquid to be blocked and unable to drain, resulting in the overflow of leaking liquid in the main tank 21, the first manual valve 24 can be closed to repair the first solenoid valve 23. In addition, by setting the first manual valve 24, when the first solenoid valve 23 malfunctions and causes the leaking liquid to remain in a flowing state, the operator can close the first manual valve 24 to block the leaking liquid.

[0036] Furthermore, in this embodiment, as Figure 4 As shown, the first drainage assembly also includes a first bypass drainage pipe 25 and a second manual valve 26. Both ends of the first bypass drainage pipe 25 are connected to the first drainage pipe 22. The second manual valve 26 is located on the first bypass drainage pipe 25 and is connected in parallel with both the first solenoid valve 23 and the first manual valve 24. In this embodiment, the volume of the overflow tank 31 is smaller than the volume of the main tank 21. The overflow tank 31 plays a transitional role in the process of measuring leakage. When the operator discovers that the first solenoid valve 23 has malfunctioned, causing the leaking liquid to be blocked and unable to drain, and the leaking liquid in the main tank 21 overflows, the first manual valve 24 is closed, the first solenoid valve 23 is repaired, and the second manual valve 26 is opened to drain the leaking liquid in the main tank 21, restoring the measurement of the leaking liquid in the main tank 21.

[0037] To facilitate the subsequent discharge of leaked liquid from the overflow tank 31, optionally, in this embodiment, the overflow mechanism 3 further includes a second drainage component, which includes a second drainage pipe 33 and a third manual valve 34. The second drainage pipe 33 is connected to the outlet at the bottom of the overflow tank 31; the third manual valve 34 is disposed on the second drainage pipe 33 and is used to control the flow of leaked liquid in the second drainage pipe 33.

[0038] Optionally, the overflow mechanism 3 further includes a second measuring element, which is fixed inside the overflow tank 31 and used to measure the leakage amount of the leaking liquid inside the overflow tank 31. This second measuring element is also connected to the display screen. The second drainage assembly further includes a second solenoid valve 35, which is disposed in the second drainage pipe 33 and connected in series with the third manual valve 34. The solenoid valve 35 is positioned away from the outlet of the overflow tank 31 relative to the third manual valve 34. The second solenoid valve 35 is connected to the second measuring element and is used to control the flow of the leaking liquid in the second drainage pipe 33. By using the second measuring element, the leakage amount inside the overflow tank 31 can be measured in real time, and the measurement result can be fed back to the display screen. When the second measuring element detects that the leaking liquid inside the overflow tank 31 is at a set height, the second solenoid valve 35 opens, discharging the leaking liquid through the second drainage pipe 33, thus achieving automatic discharge of the leaking liquid from the overflow tank 31. Furthermore, the second solenoid valve 35 is positioned away from the outlet of the overflow tank 31 relative to the third manual valve 34. This means that leaked liquid in the overflow tank 31 first passes through the third manual valve 34, then through the second solenoid valve 35, and is subsequently discharged. This configuration allows for the following: if the second solenoid valve 35 malfunctions, causing the leaked liquid to flow continuously, the third manual valve 34 can be closed to stop the leak; conversely, if the second solenoid valve 35 malfunctions, preventing the leak from being discharged, the third manual valve 34 can be closed for maintenance of the second solenoid valve 35.

[0039] Furthermore, to ensure real-time measurement without affecting the discharge of leaked liquid from the overflow tank 31, the second drainage assembly also includes a second bypass drainage pipe and a fourth manual valve. Both ends of the second bypass drainage pipe are connected to the second drainage pipe 33. The fourth manual valve is located on the second bypass drainage pipe and is connected in parallel with both the second solenoid valve 35 and the third manual valve 34. With this configuration, when performing maintenance on the second solenoid valve 35, the leaked liquid in the overflow tank 31 can be discharged simply by opening the fourth manual valve.

[0040] Optionally, in this embodiment, the overflow mechanism 3 also includes a second alarm, which is used to remind staff to carry out maintenance and handling when the second solenoid valve 35 malfunctions.

[0041] Optionally, in this embodiment, both the first measuring element and the second measuring element are ultrasonic level gauges.

[0042] Optionally, to display liquid level information more intuitively, the main tank 21 is equipped with a first magnetic level gauge 212 and a first level gauge drain valve 213. The first magnetic level gauge 212 is used to display the leakage amount of the leaking liquid inside the main tank 21, and the first level gauge drain valve 213 is used to control the flow of the leaking liquid inside the first magnetic level gauge 212; alternatively, the main tank 21 is made of transparent material and has graduation lines. This arrangement also facilitates the comparison and verification between the liquid level data measured by the first measuring element and displayed on the screen and the liquid level data on the first magnetic level gauge 212, avoiding significant deviations between the data measured by the first measuring element and the actual data. Furthermore, the magnetic level gauge is relatively accurate, has stable performance, and high reliability.

[0043] Optionally, to display the liquid level information more intuitively, the overflow tank 31 is equipped with a second magnetic level gauge 311 and a second level gauge drain valve 312. The second magnetic level gauge 311 is used to display the leakage amount of the leaking liquid in the overflow tank 31, and the second level gauge drain valve 312 is used to control the flow of the leaking liquid in the second magnetic level gauge 311. Alternatively, the overflow tank 31 can be made of transparent material and have graduation lines. This arrangement also facilitates the comparison and verification between the liquid level data measured by the second measuring element and displayed on the screen and the liquid level data on the second magnetic level gauge 311, avoiding significant deviations between the data measured by the second measuring element and the actual data.

[0044] Optionally, the base 1 is equipped with casters 11 at its bottom. This arrangement facilitates the movement of the entire feedwater pump mechanical seal leakage measuring device by operators to measure the leakage of the feedwater pump. Optionally, the base 1 is equipped with lifting lugs 12 to facilitate the movement of the feedwater pump mechanical seal leakage measuring device.

[0045] Optionally, in this embodiment, the main measuring mechanism 2 further includes a connecting pipe, one end of which is configured to communicate with the leak port of the water pump, and the other end of which is configured to communicate with the injection port 211 of the main tank 21. This configuration can prevent some of the leaked liquid from the water pump from flowing out of the injection port 211 of the main tank 21 and affecting the measurement results.

[0046] In this embodiment, the outlet of the second drain pipe 33 is connected to the inner cavity of the first drain pipe 22, and the outlet of the second magnetic level gauge 311 is connected to the inner cavity of the first drain pipe 22, which can simplify the pipeline structure and reduce the number of outlets of the water pump mechanical seal leakage measuring device.

[0047] Because the leakage volume of the leaking liquid at both ends of the water pump differs, to ensure the stable operation of the mechanical seal structure of the water pump, optionally, in this embodiment, two main measuring mechanisms 2 and two overflow mechanisms 3 are provided. In the two main measuring mechanisms 2, the injection ports 211 of the two main tank bodies 21 are respectively used to introduce the leaking liquid flowing from both ends of the water pump. The two overflow mechanisms 3 are arranged in a one-to-one correspondence with the two main measuring mechanisms 2. In this embodiment, in the two main measuring mechanisms 2, the outlet of one of the first drain pipes 22 is connected to the inner cavity of the other first drain pipe 22, which can also simplify the pipeline structure and reduce the number of outlets.

[0048] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A device for measuring the leakage of a water pump mechanical seal, characterized in that, include: Base (1); The main measuring mechanism (2) includes a main tank (21), a first measuring element, a display screen, and a first drain assembly. The main tank (21) is fixed to the base (1). The injection port (211) of the main tank (21) is used to introduce the leaked liquid flowing from the water pump. An overflow port is provided on the side wall of the main tank (21) near the top. The first measuring element is fixed inside the main tank (21) and is used to measure the leakage amount of the leaked liquid inside the main tank (21). The display screen is communicatively connected to the first measuring element. The first drain assembly includes a first drain pipe (22) and a first solenoid valve (23). The first drain pipe (22) is connected to the outlet at the bottom of the main tank (21). The first solenoid valve (23) is located in the first drain pipe (22) and is communicatively connected to the first measuring element. It is used to control the opening and closing of the leaked liquid inside the first drain pipe (22). The overflow mechanism (3) includes an overflow tank (31) and an overflow pipe (32). The overflow tank (31) is fixed to the base (1) and can display the leakage amount data of the leaked liquid. One end of the overflow pipe (32) is connected to the overflow port, and the other end of the overflow pipe (32) is connected to the liquid inlet of the overflow tank (31).

2. The water pump mechanical seal leakage measuring device according to claim 1, characterized in that, The first drainage assembly also includes a first manual valve (24), which is disposed in the first drainage pipe (22) and connected in series with the first solenoid valve (23). The first manual valve (24) is disposed near the outlet of the main tank (21) relative to the first solenoid valve (23). The first manual valve (24) is used to control the opening and closing of the leaking liquid in the first drainage pipe (22).

3. The water pump mechanical seal leakage measuring device according to claim 2, characterized in that, The first drainage assembly further includes a first bypass drainage pipe (25) and a second manual valve (26). Both ends of the first bypass drainage pipe (25) are connected to the first drainage pipe (22). The second manual valve (26) is disposed on the first bypass drainage pipe (25) and is disposed in parallel with the first solenoid valve (23) and the first manual valve (24).

4. The water pump mechanical seal leakage measuring device according to claim 1, characterized in that, The overflow mechanism (3) further includes a second drainage component, which includes a second drainage pipe (33) and a third manual valve (34). The second drainage pipe (33) is connected to the outlet at the bottom of the overflow tank (31). The third manual valve (34) is located on the second drainage pipe (33) and is used to control the flow of leaked liquid in the second drainage pipe (33).

5. The water pump mechanical seal leakage measuring device according to claim 4, characterized in that, The overflow mechanism (3) further includes a second measuring element, which is fixed inside the overflow tank (31) and is used to measure the leakage amount of the leaking liquid inside the overflow tank (31), and is connected in communication with the display screen; the second drain assembly further includes a second solenoid valve (35), which is disposed in the second drain pipe (33) and connected in series with the third manual valve (34), and is disposed away from the outlet of the overflow tank (31) relative to the third manual valve (34). The second solenoid valve (35) is connected in communication with the second measuring element and is used to control the opening and closing of the leaking liquid inside the second drain pipe (33).

6. The water pump mechanical seal leakage measuring device according to claim 1, characterized in that, The main tank (21) is equipped with a first magnetic level gauge (212) and a first level gauge drain valve (213). The first magnetic level gauge (212) is used to display the leakage amount of the leaking liquid in the main tank (21), and the first level gauge drain valve (213) is used to control the flow of the leaking liquid in the first magnetic level gauge (212). Alternatively, the main tank (21) is made of transparent material and is equipped with scale lines.

7. The water pump mechanical seal leakage measuring device according to claim 1, characterized in that, The overflow tank (31) is equipped with a second magnetic level gauge (311) and a second level gauge drain valve (312). The second magnetic level gauge (311) is used to display the leakage amount of the leaking liquid in the overflow tank (31), and the second level gauge drain valve (312) is used to control the flow of the leaking liquid in the second magnetic level gauge (311). Alternatively, the overflow tank (31) is made of transparent material and has scale lines.

8. The water pump mechanical seal leakage measuring device according to claim 1, characterized in that, The base (1) is provided with a roller (11) at its bottom; and / or, the base (1) is provided with a lifting lug (12).

9. The water pump mechanical seal leakage measuring device according to any one of claims 1-8, characterized in that, The main measuring mechanism (2) also includes a connecting pipe, one end of which is configured to communicate with the leak port of the water supply pump, and the other end of which is connected to the injection port (211).

10. The water pump mechanical seal leakage measuring device according to any one of claims 1-8, characterized in that, Both the main measuring mechanism (2) and the overflow mechanism (3) are provided in twos. In the two main measuring mechanisms (2), the liquid injection ports (211) of the two main tank bodies (21) are respectively used to introduce the leakage liquid flowing out from both ends of the water supply pump. The two overflow mechanisms (3) are set in a one-to-one correspondence with the two main measuring mechanisms (2).

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