Mechanical seal water cleaning device with visual monitoring function

Abstract

The utility model relates to the technical field of mechanical seal water treatment, in particular to a mechanical seal water cleaning device with a visual monitoring function. Comprising a mechanical seal water tank, a return pipe is arranged on one side of a centrifugal pump below the mechanical seal water tank, and the other end of the return pipe is connected with a flow sensor and a visual container to form a visual monitoring function; the return pipes are gathered to a circulating water header pipe, and the mechanical seal water is recycled through a circulating water tank and a circulating water pump; and the mechanical seal water system is connected with a cleaning and pollution discharge mechanism for cleaning. According to the mechanical seal water cleaning device with the visual monitoring function, mechanical seal water is recycled through the design of a recycling pipeline, and the purpose of saving water is achieved; through the configuration of the visual device and the flow sensor, an operator can clearly judge the water supply and unblocking conditions of the mechanical seal water, so that the efficient operation of the pump is protected; the cleaning mechanism is arranged in the pipeline, the mechanical seal water system can be cleaned through water and cleaning agents, and therefore the cleanliness of the mechanical seal water system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seal water treatment, in particular to a cleaning device for mechanical seal water with a visual monitoring function. Background Art

[0002] A mechanical seal (referred to as a mechanical seal for short) is a shaft seal device used for rotating fluid machinery, such as equipment like centrifugal pumps, centrifuges, reactors, and compressors. When a rotating machinery works, heat is generated by friction between the dynamic ring and the static ring of the mechanical seal, and cooling is required. A separate pipeline needs to be set up to pass through the mechanical seal, and the water passing through this pipeline to cool the mechanical seal is the mechanical seal water.

[0003] Using tap water to cool the mechanical seal of a rotating fluid machinery device is a common method, but there are many inconveniences in its use. The main reasons are as follows:

[0004] 1. The mechanical seal water pipe is made of stainless steel pipe, and its flow condition cannot be observed. Once a blockage occurs, it cannot be observed in time, which easily leads to the mechanical seal being burned out.

[0005] 2. The mechanical seal water pipe is prone to getting dirty, and even there are suspended substances, microorganisms, etc., resulting in pipeline blockage. Some factories choose to install a water flow switch, but after using it for a period of time, the pipeline will also be blocked, resulting in no flow of mechanical seal water and the water flow switch failing.

[0006] 3. It is difficult to clean the mechanical seal water pipe. The mechanical seal water pipe is usually a small pipe and a closed pipe, which is difficult to clean and not easy to clean thoroughly.

[0007] 4. It is difficult to recycle and reuse the mechanical seal water. After the mechanical seal water gets dirty, the significance of recycling is not great. If you want to completely avoid getting dirty, you need to increase the frequency of replacing the mechanical seal water. In this case, the consumption of mechanical seal water will increase, resulting in high water costs.

[0008] 5. When there is no tap water supply, since the pump has no cooling water source, the pump cannot be started.

[0009] Therefore, how to provide a cleaning device for mechanical seal water with a visual monitoring function has become a technical problem to be solved by those skilled in the art. Content of the Utility Model

[0010] The technical problem to be solved by the utility model is how to provide a cleaning device for mechanical seal water with a visual monitoring function.

[0011] To achieve the above object, the utility model provides a cleaning device for machine seal water with a visualization monitoring function, including: a machine seal water tank, a water supply pipeline for replenishing water into the machine seal water tank is arranged on one side of the machine seal water tank, one or more centrifugal pumps are arranged below the machine seal water tank, and the centrifugal pumps are connected to the machine seal water tank through a machine seal water pipeline. A reflux pipe is arranged on one side of the centrifugal pump, and the other end of the reflux pipe is connected to a visualization container to form a visualization monitoring function.

[0012] The machine seal water tank adopts the existing structure in the field and is used for supplementing and buffering the cooling water of the pump machine seal. The centrifugal pump adopts the existing structure on the market, and one or more can be set. After the machine seal water pipe passes through the bottom of the visualization container, it forms a semicircle at the top of the device. After the machine seal water flows out through the semicircular pipeline, it flows into the cup-shaped visualization container. In this way, the operator can clearly observe the flow situation of the machine seal water standing on the ground, so as to facilitate the operator to judge the water supply and smoothness of the machine seal water.

[0013] Preferably, the machine seal water tank is installed at a position 8 meters above the ground, and a liquid level gauge a is installed on the machine seal water tank.

[0014] The machine seal water tank is designed in this way to make it more convenient for the water in the machine seal water tank to flow out. The liquid level gauge a adopts the existing structure on the market and is used to control the liquid level in the machine seal water tank.

[0015] Preferably, the water supply pipeline includes a tap water supply pipeline and a circulating water supply pipeline. The tap water supply pipeline and the circulating water supply pipeline are arranged in parallel on one side of the machine seal water tank. A tap water replenishing valve is arranged on the tap water supply pipeline, and a circulating water replenishing valve and a valve for the circulating water to the cooling tower are arranged on the circulating water supply pipeline.

[0016] With this design, the water replenishment of the machine seal water tank is set in two modes: tap water and circulating water, which is convenient for the staff to switch modes according to the actual situation.

[0017] Preferably, the machine seal water pipeline includes a machine seal water main pipe and a machine seal water shunt pipe. The machine seal water main pipe is arranged at the bottom of the machine seal water tank, one end extends 5 cm into the machine seal water tank, and the other end is connected to the machine seal water shunt pipe. A pressure regulator is arranged on the machine seal water main pipe, and the other end of the machine seal water shunt pipe is connected to the centrifugal pump.

[0018] The main shaft seal water pipe is designed in this way to prevent impurities at the bottom of the water tank from entering the pipeline, thereby protecting the pump shaft seal from being damaged by impurities. An air-operated valve is installed on the main shaft seal water pipe, and the air-operated valve can control whether water flows out. The signal of the opening and closing of the air-operated valve is interlocked with the centrifugal pump that needs to be cooled. When the valve is open, the centrifugal pump can start operating. When the valve is in the closed state, the centrifugal pump cannot start, thus protecting the centrifugal pump. The pressure regulator adopts an existing structure on the market. The design of the pressure regulator can adjust the pressure of the shaft seal water according to actual needs, which can not only meet the requirements of the cooling water pressure but also protect the pump shaft seal, reflecting the practicability of this device.

[0019] Preferably, the visualization container has a cup-shaped structure with a larger top and a smaller bottom, and the visualization container is installed on the main shaft seal water pipe through a support rod.

[0020] The support rod is designed to have three sides. With this design, using the stability principle of a triangle, the cup-shaped visualization container is firmly stabilized on the main shaft seal water pipe.

[0021] Preferably, the circulation mechanism includes a circulating water shunt pipe. The circulating water shunt pipe is arranged on one side of the visualization container, and the other end of the circulating water shunt pipe is connected to the circulating water main pipe, and the other end of the circulating water main pipe is connected to the circulating water tank.

[0022] After the shaft seal water of multiple centrifugal pumps passes through the visualization container, it is collected through the circulating water shunt pipe to the circulating water main pipe, and the outlet of the circulating water main pipe is connected into the circulating water tank to recycle the shaft seal water.

[0023] Preferably, a level gauge b and a thermometer are provided on the circulating water tank. One side of the circulating water tank is connected to a circulating water pump through a pipeline. The circulating water pump is electrically connected to a frequency converter, and the other end of the circulating water pump is connected to the circulating water supply pipeline.

[0024] The level gauge b adopts an existing structure on the market to control the liquid level in the circulating water tank. The circulating water pump is equipped with a frequency converter, and the frequency converter and the level gauge are interlocked to control the liquid level of the circulating water tank. A thermometer is also installed on the wall of the circulating water tank to monitor the temperature of the circulating water in real time.

[0025] Preferably, the cleaning mechanism includes a water tank drain pipe, and the water tank drain pipe is installed at the bottom of the shaft seal water tank.

[0026] The water tank drain pipe is installed at the lowest point of the shaft seal water tank. When the water tank gets dirty, it can be cleaned, and the dirty water after cleaning is discharged through the water tank drain pipe.

[0027] Preferably, the cleaning mechanism further includes a water tank drain pipe for the water tank, and the water tank drain pipe for the water tank is arranged at the bottom of the circulating water tank.

[0028] When the circulating water tank gets dirty, it is cleaned through the water tank sewage pipe. When cleaning, dirty water, impurities, etc. can be discharged through the water tank sewage pipe.

[0029] Preferably, the cleaning mechanism further includes a cleaning pipeline. One end of the cleaning pipeline is connected with a diversion pipe, the other end of the diversion pipe is connected with the water supply pipeline, the other end of the cleaning pipeline is connected with a cleaning shunt pipe, the other end of the cleaning shunt pipe is connected with the mechanical seal water main pipe and the circulating water main pipe, and a circulating water sewage pipe is connected to the circulating water main pipe.

[0030] Cleaning pipelines are arranged on both the connection of the mechanical seal water main pipe and the circulating water main pipe, and various cleaning methods such as water flushing and chemical agent cleaning can be adopted according to the actual situation.

[0031] The beneficial effects of the present utility model are as follows:

[0032] 1. When the present utility model is in use, after the mechanical seal water pipe passes through the bottom of the visualization container, it forms a semicircle at the top of the device. After the mechanical seal water flows out through the semicircular pipeline, it flows into the cup-shaped visualization container. In this way, the operator standing on the ground can clearly observe the flow situation of the mechanical seal water, so as to facilitate the operator to judge the water supply and smoothness of the mechanical seal water, reflecting the practicability of the device.

[0033] 2. When the present utility model is in use, through configurations such as the circulating pipeline and the circulating water pump, the mechanical seal water can be recycled and reused, playing a role in saving water, conforming to the existing environmental protection concept, and reflecting the environmental protection of the device.

[0034] 3. When the present utility model is in use, through the setting of the cleaning mechanism, the mechanical seal water circulation system can be cleaned regularly to ensure the cleanliness of the system, which is conducive to popularization and use. Description of the Drawings

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0036] Figure 1 It is the front view structural schematic diagram of the overall specific implementation manner of the present utility model.

[0037] Figure 2 It is the specific implementation manner of the present utility model Figure 1 The enlarged structural schematic diagram of part A in it.

[0038] Part Name

[0039] 1. Mechanical seal water tank; 101. Liquid level gauge a; 2. Tap water supply pipeline; 3. Circulating water supply pipeline; 4. Centrifugal pump; 5. Main mechanical seal water pipe; 501. Pressure regulator; 6. Mechanical seal water shunt pipe; 7. Return pipe; 8. Visualization container; 9. Support rod; 10. Circulating water shunt pipe; 11. Main circulating water pipe; 12. Circulating water tank; 1201. Liquid level gauge b; 1202. Thermometer; 13. Circulating water pump; 1301. Frequency converter; 14. Water tank sewage discharge pipe; 15. Water tank sewage discharge pipe; 16. Cleaning pipeline; 17. Diversion pipe; 18. Cleaning shunt pipe; 19. Circulating water sewage discharge pipe. Detailed implementation manners

[0040] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. Preferably, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0041] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. In addition, in the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0042] Please refer to Figure 1-2, the present utility model provides a cleaning device for mechanical seal water with a visual monitoring function, including: a mechanical seal water tank 1, a water supply pipeline for replenishing water into it is arranged on one side of the mechanical seal water tank 1, one or more centrifugal pumps 4 are arranged below the mechanical seal water tank 1, and the centrifugal pumps 4 are connected to the mechanical seal water tank 1 through a mechanical seal water pipeline. A reflux pipe 7 is arranged on one side of the centrifugal pump 4, and the other end of the reflux pipe 7 is connected to a visual container 8 to form a visual monitoring function. The mechanical seal water tank 1 is installed at a position 8 meters above the ground, and a liquid level gauge a101 is installed on the mechanical seal water tank 1. The water supply pipeline includes a tap water supply pipeline 2 and a circulating water supply pipeline 3. The tap water supply pipeline 2 and the circulating water supply pipeline 3 are arranged in parallel on one side of the mechanical seal water tank 1. A tap water replenishing valve is arranged on the tap water supply pipeline 2, and a circulating water replenishing valve and a valve for circulating water to the cooling tower are arranged on the circulating water supply pipeline 3. The mechanical seal water pipeline includes a mechanical seal water main pipe 5 and a mechanical seal water shunt pipe 6. The mechanical seal water main pipe 5 is arranged at the bottom of the mechanical seal water tank 1, one end extends 10 cm into the mechanical seal water tank 1, and the other end is connected to the mechanical seal water shunt pipe 6. A pressure regulator 501 is arranged on the mechanical seal water main pipe 5. The other end of the mechanical seal water shunt pipe 6 is connected to the centrifugal pump 4. The visual container 8 has an upper-large and lower-small cup-shaped structure, and the visual container 8 is installed on the mechanical seal water main pipe 5 through a support rod 9. The circulating mechanism includes a circulating water shunt pipe 10. The circulating water shunt pipe 10 is arranged on one side of the visual container 8, and the other end of the circulating water shunt pipe 10 is connected to a circulating water main pipe 11. And the other end of the circulating water main pipe 11 is connected to a circulating water tank 12. A liquid level gauge b1201 and a thermometer 1202 are arranged on the circulating water tank 12. And one side of the circulating water tank 12 is connected to a circulating water pump 13 through a pipeline. A frequency converter 1301 is arranged on the circulating water pump 13, and the other end of the circulating water pump 13 is connected to the circulating water supply pipeline 3. The cleaning mechanism includes a water tank drain pipe 14, and the water tank drain pipe 14 is installed at the bottom of the mechanical seal water tank 1. The cleaning mechanism further includes a water tank drain pipe 15, and the water tank drain pipe 15 is arranged at the bottom of the circulating water tank 12. The cleaning mechanism further includes a cleaning pipeline 16. One end of the cleaning pipeline 16 is connected to a diversion pipe 17, and the other end of the diversion pipe 17 is connected to the water supply pipeline. The other end of the cleaning pipeline 16 is connected to a cleaning shunt pipe 18. The other end of the cleaning shunt pipe 18 is connected to the mechanical seal water main pipe 5 and the circulating water main pipe 11. And a circulating water drain pipe 19 is connected to the circulating water main pipe 11;

[0043] In this embodiment:

[0044] First, supplement an appropriate amount of water into the mechanical seal water tank 1. When replenishing water, the mode can be switched according to the actual situation. The liquid level in the mechanical seal water tank 1 is controlled by the liquid level gauge a101. In the tap water mode, water is supplied through the tap water supply pipe 2. When the liquid level in the water tank is low, the tap water replenishing valve opens, the circulating water replenishing valve closes, and the valve for circulating water to the cooling tower opens. Tap water is replenished into the mechanical seal water tank 1, and the circulating water goes to the cooling tower for cooling tower water replenishment. When the liquid level in the water tank is high, the tap water replenishing valve closes, the water tank is not replenished, and the liquid level is controlled down. In the circulating water mode, water is supplied through the circulating water supply pipe 3. When the liquid level in the water tank is low, the tap water replenishing valve closes, the circulating water replenishing valve opens, and the valve for circulating water to the cooling tower closes. The circulating water enters the water tank. When the liquid level in the water tank is high, the circulating water replenishing valve also closes, the water tank is not replenished, and the valve for circulating water to the cooling tower opens. The circulating water is used for cooling tower water replenishment, thereby controlling the liquid level of the water tank down;

[0045] Secondly, start the centrifugal pump 4 and the pneumatic valve on the mechanical seal water main pipe 5, so that the water in the mechanical seal water tank 1 enters the mechanical seal water main pipe 5, and then is divided into each centrifugal pump 4 through the mechanical seal water shunt pipe 6. When supplying water, the design of the pressure regulator 501 can adjust the pressure of the mechanical seal water according to the actual demand, which can not only meet the cooling water pressure requirement but also protect the pump mechanical seal. After the mechanical seal water enters the pump for cooling, it flows through the return pipe 7 to the inside of the mechanical seal water visualization container 8 at a height of about 2 - 3m. After the mechanical seal water pipe passes through the bottom of the visualization container 8, it forms a semicircle at the top of the device. The mechanical seal water flows out through the semicircular pipeline and then flows into the visualization container 8. In this way, the operator standing on the ground can clearly observe the flow situation of the mechanical seal water, so as to facilitate the operator to judge the water supply and smoothness of the mechanical seal water. During use, the support rod 9 firmly fixes the visualization container 8 on the mechanical seal water main pipe 5 to prevent it from tipping over. And a flow sensor is configured on the mechanical seal water outlet pipeline behind each centrifugal pump 4. The flow sensor emits different signals by detecting the water flux flowing through. If the water flux is lower than the lower limit, a red signal light is reported. If it is higher than the lower limit, a green signal light is reported. The operator can judge by watching the signal light. At the same time, this signal is also introduced into the central control room and interlocked with the pump. When a red signal is reported, it indicates that the mechanical seal water is abnormal, and the pump automatically stops and gives an alarm. If a green signal light is reported, it indicates that the mechanical seal water is normal and the pump is running normally;

[0046] Then, after the shaft seal water of multiple centrifugal pumps 4 passes through the visualization container 8, it is collected into the internal part of the circulating water main pipe 11 through the circulating water shunt pipe 10. The outlet of the circulating water main pipe 11 is connected into the circulating water tank 12 to recycle the shaft seal water. When it is needed, it is transferred to the shaft seal water tank 1 through the circulating water pump 13. There is a liquid level gauge b1201 at the bottom of the circulating water tank 12. The circulating water pump 13 is equipped with a frequency converter 1301. The frequency converter 1301 and the liquid level gauge b1201 are interlocked to control the liquid level of the circulating water tank 12. A thermometer 1202 is also installed on the wall of the circulating water tank 12 to monitor the circulating water temperature in real time. When the temperature is higher than 35 °C, the tap water valve at the top of the circulating water tank 12 is opened, and tap water enters the circulating water tank 12. Since the tap water has a low temperature, it can lower the water temperature in the circulating water tank 12;

[0047] Finally, after the circulating water is used for a period of time, some impurities, flocs, etc. will be generated, which will affect the water flux, resulting in poor pump cooling effect and may seriously burn out the shaft seal. Therefore, the circulating water system needs to be cleaned after being used for a period of time. During cleaning, when the shaft seal water tank 1 is dirty, the inside of the shaft seal water tank 1 is cleaned with water, and the dirty water after cleaning is discharged through the water tank sewage pipe 14; when the circulating water tank 12 is dirty, the inside of the circulating water tank 12 is cleaned with water, and the dirty water, impurities, etc. after cleaning are discharged through the water tank sewage pipe 15. When cleaning the pipeline, the cleaning method can adopt various methods such as water flushing and chemical agent cleaning according to the actual situation. When cleaning, water or chemical agent is provided through the cleaning pipeline 16 or the diversion pipe 17. The cleaning water or cleaning chemical agent enters the shaft seal water main pipe 5 and the circulating water main pipe 11 through the cleaning pipeline 16 and the cleaning shunt pipe 18. The cleaning water or cleaning chemical agent in the shaft seal water main pipe 5 is also reversed into the shaft seal water tank 1 along with the pipeline, so that the entire shaft seal water main pipe 5 is cleaned. After cleaning, the sewage valve of the shaft seal water tank 1 is opened, so that the cleaning water or chemical agent with impurities is discharged from the water tank sewage pipe 14 of the shaft seal water tank 1; the cleaning water or chemical agent entering the circulating water main pipe 11 is backwashed out from the cup-shaped visualization container 8 with impurities, and the remaining water or impurities are discharged through the circulating water sewage pipe 19.

[0048] The above-disclosed is only a preferred embodiment of the present invention, and of course, it cannot be used to limit the scope of rights of the present invention. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A cleaning device for mechanical seal water with a visual monitoring function, comprising: The mechanical seal water tank is provided with a water supply pipeline for replenishing water into it on one side. One or more centrifugal pumps are arranged below the mechanical seal water tank, and the centrifugal pumps are connected to the mechanical seal water tank through a mechanical seal water pipeline. It is characterized in that a reflux pipe is arranged on one side of the centrifugal pump, and the other end of the reflux pipe is connected to a visualization container to form a visualization monitoring function.

2. The cleaning device for gland water with a visual monitoring function according to claim 1, characterized in that, The mechanical seal water tank is installed at a position 8 meters above the ground, and a liquid level gauge a is installed on the mechanical seal water tank.

3. The cleaning device for gland water with a visualization monitoring function according to claim 1, characterized in that, The water supply pipeline includes a tap water supply pipeline and a circulating water supply pipeline. The tap water supply pipeline and the circulating water supply pipeline are arranged in parallel on one side of the mechanical seal water tank. A tap water replenishing valve is arranged on the tap water supply pipeline, and a circulating water replenishing valve and a valve for the circulating water to go to the cooling tower are arranged on the circulating water supply pipeline.

4. The cleaning device for gland water with a visual monitoring function according to claim 1, characterized in that, The mechanical seal water pipeline includes a mechanical seal water main pipe and a mechanical seal water shunt pipe. The mechanical seal water main pipe is arranged at the bottom of the mechanical seal water tank, with one end extending 5 cm into the mechanical seal water tank and the other end connected to the mechanical seal water shunt pipe. A pressure regulator is arranged on the mechanical seal water main pipe, and the other end of the mechanical seal water shunt pipe is connected to the centrifugal pump.

5. The cleaning device for mechanical seal water with a visual monitoring function as described in claim 1, characterized in that, The visualization container has an upper-large and lower-small cup-shaped structure, and the visualization container is installed on the mechanical seal water main pipe through a support rod.

6. The cleaning device for gland water with a visual monitoring function as described in claim 1, wherein, It further includes a circulation mechanism. The circulation mechanism includes a circulating water shunt pipe. The circulating water shunt pipe is arranged on one side of the visualization container, and the other end of the circulating water shunt pipe is connected to the circulating water main pipe, and the other end of the circulating water main pipe is connected to a circulating water tank.

7. The cleaning device for mechanical seal water with a visualization monitoring function according to claim 6, characterized in that, A liquid level gauge b and a thermometer are arranged on the circulating water tank. One side of the circulating water tank is connected to a circulating water pump through a pipeline. The circulating water pump is electrically connected to a frequency converter, and the other end of the circulating water pump is connected to the circulating water supply pipeline.

8. The cleaning device for mechanical seal water with a visual monitoring function according to claim 1, characterized in that, It further includes a cleaning mechanism. The cleaning mechanism includes a water tank sewage discharge pipe, and the water tank sewage discharge pipe is installed at the bottom of the mechanical seal water tank.

9. The cleaning device for mechanical seal water with a visual monitoring function according to claim 8, characterized in that, The cleaning mechanism further includes a water tank sewage discharge pipe, and the water tank sewage discharge pipe is arranged at the bottom of the circulating water tank.

10. The cleaning device for gland water with a visual monitoring function according to any one of claims 8 or 9, characterized in that The cleaning mechanism further includes a cleaning pipeline. One end of the cleaning pipeline is connected to a diversion pipe, and the other end of the diversion pipe is connected to the water supply pipeline. The other end of the cleaning pipeline is connected to a cleaning shunt pipe, and the other end of the cleaning shunt pipe is connected to the mechanical seal water main pipe and the circulating water main pipe. And a circulating water sewage discharge pipe is connected to the circulating water main pipe.

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