CN219795436U - Siphon type water turbine top cover drainage device - Google Patents

Abstract

The utility model discloses a top cover drainage device of a siphon water turbine, which comprises a siphon component, a water filling component and an exhaust component, wherein the siphon component comprises a siphon pipe, a first valve and a second valve, the siphon pipe is provided with a water suction port positioned in a water accumulation tank and a water discharge port positioned outside the water accumulation tank, the first valve is connected in series with the siphon pipe, the second valve is connected in series with the siphon pipe and positioned below the water accumulation tank, the water filling component comprises a water suction pipe and a submersible pump, an inlet of the water suction pipe is communicated with an outlet of the submersible pump, an outlet of the water suction pipe is communicated with the interior of the siphon pipe, the submersible pump is suitable for being connected in the water accumulation tank, the exhaust component comprises an exhaust pipe and a third valve, the exhaust pipe is positioned above the siphon pipe, the lower end of the exhaust pipe is communicated with the interior of the siphon pipe, and the third valve is connected in series with the exhaust pipe. According to the utility model, the siphon pipe is filled with water through the submersible pump so that the siphon pipe has a condition of generating siphon, and then the siphon pipe discharges water in the water accumulation tank through the siphon, so that the working time of the pump is shortened.

Description

Siphon type water turbine top cover drainage device

Technical Field

The utility model belongs to the technical field of hydroelectric generation, and particularly relates to a top cover drainage device of a siphon type water turbine.

Background

The water accumulation on the top cover is mainly caused by the reasons of water leakage of the middle shaft sleeve of the guide vane, water leakage between the top cover and the large shaft, and the like, and the top cover is required to be timely discharged in order to prevent the unplanned shutdown of the unit caused by flooding of the water guide bearing due to excessive water accumulation.

In the related art, the drainage pump or the submersible pump is arranged on the top cover to drain accumulated water on the top cover, but sediment in the accumulated water not only can reduce the drainage efficiency of the pump, so that the pump is in a working state for a long time, but also can abrade parts in the pump, and the service life of the pump and the safety and stability of a unit are seriously influenced.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, the embodiment of the utility model provides an energy-saving, safe and reliable top cover drainage device of a siphon type water turbine.

The siphon assembly comprises a siphon pipe, a first valve and a second valve, wherein the siphon pipe is provided with a water suction port and a water discharge port, the water suction port is positioned in a water accumulation groove of the top cover and is close to the bottom of the water accumulation groove, the water discharge port is positioned outside the water accumulation groove, the first valve is connected in series with the siphon pipe and is positioned in the water accumulation groove, the second valve is connected in series with the siphon pipe and is positioned outside the water accumulation groove, the second valve is positioned below the water accumulation groove, the water filling assembly comprises a water suction pipe and a submersible pump, an inlet of the water suction pipe is communicated with an outlet of the submersible pump, an outlet of the water suction pipe is communicated with the interior of the siphon pipe, the first valve is close to the water suction port relative to an outlet of the water suction pipe, the water discharge pipe is suitable for being connected in the water accumulation groove, the air discharge assembly comprises an air discharge pipe and a third valve, the air discharge pipe is positioned above the siphon pipe, the lower end of the air discharge pipe is communicated with the interior of the siphon pipe, and the third valve is connected in series.

According to the top cover drainage device of the siphon type water turbine, the siphon pipe is filled with water through the submersible pump so that the siphon pipe has the condition of generating siphon, and then the siphon pipe drains water in the water storage tank through the siphon, so that the working time of the pump is shortened.

In some embodiments, the siphon includes a first pipe, a second pipe, a third pipe and a fourth pipe that are sequentially communicated, an inlet of the first pipe is the water suction port, the third pipe is positioned above the first pipe, the second pipe and the fourth pipe, an outlet of the fourth pipe is the water discharge port, the first valve is connected in series with the first pipe, an outlet of the water suction pipe is communicated with an inside of the second pipe, a lower end of the exhaust pipe is communicated with an inside of the third pipe, and the second valve is connected in series with the fourth pipe.

In some embodiments, the siphon assembly further comprises a four-way joint, a dirt collecting pipe and a sealing cover, wherein the four-way joint is connected to the lower end of the second pipe, the four-way joint is provided with a first through hole, a second through hole, a third through hole and a fourth through hole, the first through hole is communicated with the lower end opening of the second pipe, the second through hole is communicated with the outlet of the first pipe, the third through hole is communicated with the outlet of the water pumping pipe, the upper end opening of the dirt collecting pipe is communicated, the dirt collecting pipe is positioned below the second pipe, and the sealing cover is detachably connected to the lower end of the dirt collecting pipe to seal the lower end opening of the dirt collecting pipe.

In some embodiments, the tube diameter of the third tube middle is greater than the tube diameter of the third tube ends.

In some embodiments, the first valve and the third valve are each check valves and the second valve is a regulator valve.

In some embodiments, the siphon assembly, the water filling assembly and the exhaust assembly are all multiple, the siphon tube is in one-to-one correspondence with the water filling assembly, the water pumping pipe is communicated with the siphon tube, the siphon tube is in one-to-one correspondence with the exhaust assembly, and the exhaust pipe is communicated with the siphon tube.

In some embodiments, a plurality of the siphon assemblies are spaced apart along a circumference of the top cap.

In some embodiments, the siphon turbine top cover drainage device of the embodiment of the present utility model further comprises a control assembly, wherein the control assembly comprises a first liquid level sensor and a controller, the first liquid level sensor is suitable for being connected in the water accumulation tank to monitor the liquid level in the water accumulation tank, the first liquid level sensor is electrically connected with the controller, and the controller is electrically connected with the plurality of submersible pumps respectively.

In some embodiments, the control assembly further comprises a second level sensor adapted to be connected within the sump to monitor a level of liquid within the sump, the second level sensor being located above the first level sensor and electrically connected to the controller.

In some embodiments, the exhaust assembly further comprises an exhaust pump, an inlet of the exhaust pump being in communication with the upper end opening of the exhaust pipe; the control assembly further includes a third level sensor connected within the exhaust pipe to monitor a level of liquid within the exhaust pipe, the third level sensor located below the third valve and electrically connected with the controller.

Drawings

Fig. 1 is a schematic view of a top cover drainage device of a siphon turbine according to an embodiment of the present utility model.

Fig. 2 is a schematic diagram of a piping of a top cover drainage device of a siphon turbine according to an embodiment of the present utility model.

Reference numerals:

a water accumulation tank 100;

a siphon assembly 1, a siphon tube 11; a water suction port 111; a drain port 112; a first tube 113; a second tube 114; a third pipe 115; a fourth tube 116; a first valve 12; a second valve 13; a four-way joint 14; a dirt collecting pipe 15; a sealing cover 16;

a water filling assembly 2; a water suction pipe 21; a submersible pump 22;

an exhaust assembly 3; an exhaust pipe 31; and a third valve 32.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

The top cover drainage device of the siphon water turbine according to the embodiment of the present utility model is described below with reference to the accompanying drawings.

As shown in fig. 1 and 2, the top cover drainage device of the siphon water turbine according to the embodiment of the present utility model includes a siphon assembly 1, a water filling assembly 2 and a gas discharging assembly 3.

The siphon assembly 1 comprises a siphon pipe 11, a first valve 12 and a second valve 13, the siphon pipe 11 is provided with a water suction port 111 and a water discharge port 112, the water suction port 111 is positioned in the water accumulation tank 100 of the top cover and is close to the bottom of the water accumulation tank 100, the water discharge port 112 is positioned outside the water accumulation tank 100, the first valve 12 is connected in series with the siphon pipe 11 and is positioned in the water accumulation tank 100, the second valve 13 is connected in series with the siphon pipe 11 and is positioned outside the water accumulation tank 100, and the second valve 13 is positioned below the water accumulation tank 100.

The water filling assembly 2 comprises a water suction pipe 21 and a submersible pump 22, wherein the inlet of the water suction pipe 21 is communicated with the outlet of the submersible pump 22, the outlet of the water suction pipe 21 is communicated with the inside of the siphon pipe 11, the first valve 12 is close to the water suction port 111 relative to the outlet of the water suction pipe 21, when the second valve 13 is closed, the water in the water suction pipe 21 enters the siphon pipe 11 and is blocked by the second valve 13 so as not to be discharged from the water suction port 111, the submersible pump 22 is suitable for being connected in the water accumulation tank 100,

the exhaust assembly 3 includes an exhaust pipe 31 and a third valve 32, the exhaust pipe 31 is located above the siphon pipe 11, and the lower end of the exhaust pipe 31 communicates with the interior of the siphon pipe 11, and the third valve 32 is connected in series to the exhaust pipe 31.

When the water in the water accumulation tank 100 is discharged, the first valve 12 and the second valve 13 are closed, the third valve 32 and the submersible pump 22 are opened, the submersible pump 22 discharges water into the siphon pipe 11 through the water suction pipe 21, the water in the siphon pipe 11 cannot be discharged from the water suction port 111 and the water discharge port 112 due to the closing of the first valve 12 and the second valve 13, so that the water in the siphon pipe 11 enters the exhaust pipe 31, when the upper end of the exhaust pipe 31 is discharged, the water in the siphon pipe 11 is indicated to be full of the siphon pipe 11, then the third valve 32 and the submersible pump 22 are closed, the first valve 12 and the second valve 13 are opened, and the siphon pipe 11 performs siphon effect so that the water in the water accumulation tank 100 is discharged out of the water accumulation tank 100.

According to the top cover drainage device of the siphon type water turbine, the siphon pipe 11 is filled with water through the submersible pump 22 so that the siphon pipe 11 has a condition of generating siphon, and then the siphon pipe 11 drains water in the water accumulation groove 100 through the siphon, so that the working time of the pump is shortened; the top cover drainage device of the siphon water turbine in the embodiment of the utility model is convenient for observing whether the siphon pipe 11 is full of water or not through the arrangement of the exhaust pipe 31, and is convenient for discharging gas in the siphon pipe 11, thereby avoiding influencing the drainage rate and even avoiding damaging the siphon due to the existence of bubbles in the siphon pipe 11.

As shown in fig. 1 and 2, in some embodiments, the siphon tube 11 includes a first tube 113, a second tube 114, a third tube 115 and a fourth tube 116 which are sequentially communicated, an inlet of the first tube 113 (a lower end opening as shown in fig. 2) is a water suction port 111, the third tube 115 is positioned above the first tube 113, the second tube 114 and the fourth tube 116, an outlet of the fourth tube 116 (a lower end opening as shown in fig. 2) is a water discharge port 112, the first valve 12 is connected in series with the first tube 113, an outlet of the water suction tube 21 is communicated with an interior of the second tube 114, a lower end of the exhaust tube 31 is communicated with an interior of the third tube 115, the second valve 13 is connected in series with the fourth tube 116, and when the siphon tube 11 is siphoned, water in the water accumulation tank 100 enters the first tube 113 from the water suction port 111, then sequentially passes through the second tube 114, the third tube 115 and the fourth tube 116, and finally is discharged from the water discharge port 112.

As shown in fig. 1 and 2, the siphon assembly 1 further includes a four-way joint 14, a dirt collecting tube 15 and a sealing cover 16, wherein the four-way joint 14 is connected to the lower end of the second tube 114, the four-way joint 14 has a first through hole (an upper end opening as shown in fig. 2), a second through hole (a right end opening as shown in fig. 2), a third through hole (a left end opening as shown in fig. 2) and a fourth through hole (a lower end opening as shown in fig. 2), the first through hole is communicated with the lower end opening of the second tube 114, the second through hole is communicated with the outlet of the first tube 113, the third through hole is communicated with the outlet of the water pumping tube 21, the upper end opening of the dirt collecting tube 15 is communicated with the upper end opening of the dirt collecting tube 15, the dirt collecting tube 15 is located below the second tube 114, and the sealing cover 16 is detachably connected to the lower end of the dirt collecting tube 15 to seal the lower end opening of the dirt collecting tube 15.

Therefore, in the siphon hydraulic turbine top cover drainage device provided by the embodiment of the utility model, through the arrangement of the sewage collecting pipe 15 and the sealing cover 16, impurities in the second pipe 114 move downwards under the action of gravity and enter the sewage collecting pipe 15, and as the lower end opening of the sewage collecting pipe 15 is blocked by the sealing cover 16, the impurities in the sewage collecting pipe 15 are collected in the sewage collecting pipe 15, and the accumulation of the impurities at the submersible pump 22 and the first valve 12 is reduced, so that the influence of the impurities on the submersible pump 22 and the first valve 12 is reduced.

As shown in fig. 1 and 2, in some embodiments, the pipe diameter of the middle portion of the third pipe 115 is larger than the pipe diameters of both ends of the third pipe 115, and the lower end of the exhaust pipe 31 communicates with the middle portion of the third pipe 115,

it will be appreciated that, due to the poor sealing of the pipe or the release of air dissolved in the water at low pressure, bubbles are generated in the siphon tube 11, which can affect the drainage rate and even avoid damaging the siphon tube, the pipe diameter of the middle part of the third pipe 115 is larger than that of the two ends of the third pipe 115, so that the gas is more likely to accumulate in the middle part of the third pipe 115 and enter the exhaust pipe 31, and the gas in the siphon tube 11 is conveniently collected.

In some embodiments, the first valve 12 and the third valve 32 are check valves for restricting the flow direction of the fluid in the siphon tube 11 and the exhaust tube 31, and the second valve 13 is a regulating valve for regulating the flow rate of the water in the siphon tube 11.

It will be appreciated that since the first valve 12 and the third valve 32 are check valves, the submersible pump 22 does not need to adjust the first valve 12 and the third valve 32 when filling the siphon tube 11 and siphoning the siphon tube 11, reducing the workload of the staff, and the adjusting valve can adjust the water flow in the siphon tube 11 to control the drainage rate.

As shown in fig. 1, in some embodiments, the siphon assembly 1, the water filling assembly 2 and the exhaust assembly 3 are all plural, the plural siphon pipes 11 are in one-to-one correspondence with the plural water filling assemblies 2, the water suction pipe 21 is communicated with the corresponding siphon pipe 11, the plural siphon pipes 11 are in one-to-one correspondence with the plural exhaust assemblies 3, and the exhaust pipe 31 is communicated with the corresponding siphon pipe 11.

Further, the plurality of siphon assemblies 1 are spaced apart along the circumference of the top cover.

It can be appreciated that, on the one hand, the plurality of siphon assemblies 1, the plurality of water filling assemblies 2 and the plurality of air exhausting assemblies 3 can operate alternately, so that the problem that the accumulated water in the water accumulating tank 100 cannot be discharged in time due to damage of a single water discharging device is avoided, and on the other hand, the plurality of siphon assemblies 1, the plurality of water filling assemblies 2 and the plurality of air exhausting assemblies 3 can operate simultaneously, so that the water discharging rate is increased.

In some embodiments, the siphon turbine head cover drain of the present embodiment further comprises a control assembly including a first level sensor (not shown) adapted to be coupled within the sump 100 to monitor the liquid level within the sump 100, and a controller (not shown) electrically coupled to the plurality of submersible pumps 22, respectively.

It should be noted that, when the first liquid level sensor monitors that the liquid level in the water accumulation tank 100 is higher than the first liquid level, the first liquid level sensor sends a signal to the controller, the controller receives the signal of the first liquid level sensor and then controls one of the submersible pumps 22 to start, and after the siphon pipe 11 is filled with water, the controller controls the submersible pump 22 to close; when the first liquid level sensor monitors that the liquid level in the water accumulation groove 100 is higher than the first liquid level again, the first liquid level sensor sends a signal to the controller, the controller receives the signal of the first liquid level sensor and then controls the next submersible pump 22 to start, and after the siphon pipe 11 is filled with water, the controller controls the submersible pump 22 to close.

In some embodiments, the control assembly further includes a second level sensor (not shown) adapted to be coupled within the sump 100 to monitor the level of liquid within the sump 100, the second level sensor being located above the first level sensor and electrically coupled to the controller.

It should be noted that, when the second liquid level sensor monitors that the liquid level in the water accumulation tank 100 is higher than the first liquid level and higher than the second liquid level (the second liquid level is higher than the first liquid level), the second liquid level sensor sends a signal to the controller, and the controller receives the signal of the second liquid level sensor and then controls all the submersible pumps 22 to start.

In some embodiments, the exhaust assembly 3 further comprises an exhaust pump (not shown), the inlet of which communicates with the upper end opening of the exhaust pipe 31; the control assembly further includes a third level sensor (not shown) connected within the exhaust pipe 31 to monitor the level of liquid within the exhaust pipe 31, the third level sensor being located below the third valve 32 and electrically connected to the controller.

It should be noted that, since the pipe is not tightly sealed or the air dissolved in the water is released under low pressure, bubbles are generated in the siphon tube 11, and these bubbles affect the drainage rate and even avoid damaging the siphon tube, so that the air in the siphon tube 11 needs to be timely discharged. When one or more siphon pipes 11 drain water, namely, when the siphon pipes 11 are in a working state, the corresponding third liquid level sensor is started and monitors the liquid level in the exhaust pipe 31, when the third liquid level sensor monitors that the liquid level in the exhaust pipe 31 is lower than the third liquid level, the third sensor sends a low water level signal to the controller, and after receiving the low water level signal sent by the third sensor, the controller controls the corresponding exhaust pump to be started so as to exhaust air in the exhaust pipe 31; when the third liquid level sensor monitors that the liquid level in the exhaust pipe 31 is higher than the fourth liquid level (the fourth liquid level is higher than the third liquid level), the third sensor sends a high water level signal to the controller, and the controller controls the corresponding exhaust pump to be closed after receiving the high water level signal sent by the third sensor.

Therefore, in the embodiments, the top cover drainage device of the siphon water turbine can automatically drain the gas in the siphon pipe 11 through the arrangement of the exhaust pump and the third liquid level sensor, so that the influence of a large amount of accumulated gas in the siphon pipe 11 on the drainage rate and even the damage to the siphon are avoided.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims (10)

1. A siphon hydraulic turbine head cap drainage device, comprising:

the siphon assembly comprises a siphon pipe, a first valve and a second valve, wherein the siphon pipe is provided with a water suction port and a water discharge port, the water suction port is positioned in a water accumulation groove of the top cover and is close to the bottom of the water accumulation groove, the water discharge port is positioned outside the water accumulation groove, the first valve is connected in series with the siphon pipe and is positioned in the water accumulation groove, the second valve is connected in series with the siphon pipe and is positioned outside the water accumulation groove, and the second valve is positioned below the water accumulation groove;

the water filling assembly comprises a water pumping pipe and a submersible pump, an inlet of the water pumping pipe is communicated with an outlet of the submersible pump, an outlet of the water pumping pipe is communicated with the inside of the siphon pipe, the first valve is close to the water suction port relative to the outlet of the water pumping pipe, and the submersible pump is suitable for being connected in the water accumulation tank;

the exhaust assembly comprises an exhaust pipe and a third valve, the exhaust pipe is positioned above the siphon pipe, the lower end of the exhaust pipe is communicated with the inside of the siphon pipe, and the third valve is connected in series with the exhaust pipe.

2. The siphon turbine top cover drainage device according to claim 1, wherein the siphon pipe comprises a first pipe, a second pipe, a third pipe and a fourth pipe which are sequentially communicated, an inlet of the first pipe is the water suction port, the third pipe is positioned above the first pipe, the second pipe and the fourth pipe, an outlet of the fourth pipe is the drainage port, the first valve is connected in series with the first pipe, an outlet of the water suction pipe is communicated with the interior of the second pipe, a lower end of the exhaust pipe is communicated with the interior of the third pipe, and the second valve is connected in series with the fourth pipe.

3. The siphon turbine head cap drainage device of claim 2, wherein the siphon assembly further comprises a four-way connector, a dirt collecting pipe and a sealing cover, wherein the four-way connector is connected to the lower end of the second pipe, the four-way connector is provided with a first port, a second port, a third port and a fourth port, the first port is communicated with the lower end opening of the second pipe, the second port is communicated with the outlet of the first pipe, the third port is communicated with the outlet of the water pumping pipe, the upper end opening of the dirt collecting pipe is communicated, the dirt collecting pipe is positioned below the second pipe, and the sealing cover is detachably connected to the lower end of the dirt collecting pipe to seal the lower end opening of the dirt collecting pipe.

4. The siphon turbine head cap drainage device according to claim 2, wherein the diameter of the middle part of the third pipe is larger than the diameter of the two ends of the third pipe.

5. The siphon turbine head cap drainage apparatus of any of claims 1-4, wherein the first valve and the third valve are check valves and the second valve is a regulator valve.

6. The siphon turbine head cap drainage apparatus of claim 1, wherein the siphon assembly, the water filling assembly and the exhaust assembly are plural, the plural siphon pipes are in one-to-one correspondence with the plural water filling assemblies, the water suction pipe is communicated with the corresponding siphon pipes, the plural siphon pipes are in one-to-one correspondence with the plural exhaust assemblies, and the exhaust pipe is communicated with the corresponding siphon pipes.

7. The siphon turbine head cap drainage apparatus of claim 6, wherein a plurality of the siphon assemblies are spaced apart along the circumference of the head cap.

8. The siphonic turbine head drainage according to any one of claims 6 to 7, further comprising a control assembly comprising a first level sensor and a controller, the first level sensor being adapted to be connected within the sump to monitor the level of liquid within the sump, the first level sensor being electrically connected to the controller, the controller being electrically connected to a plurality of the submersible pumps respectively.

9. The siphonic turbine head drainage according to claim 8, wherein the control assembly further comprises a second level sensor adapted to be connected within the sump to monitor the level of liquid within the sump, the second level sensor being located above the first level sensor and electrically connected to the controller.

10. The siphon turbine head cap drainage apparatus of claim 8, wherein the exhaust assembly further comprises an exhaust pump, the inlet of the exhaust pump being in communication with the upper end opening of the exhaust pipe;

the control assembly further includes a third level sensor connected within the exhaust pipe to monitor a level of liquid within the exhaust pipe, the third level sensor located below the third valve and electrically connected with the controller.