Novel high-pressure centrifugal pump sealing cooling water circulation treatment system

Abstract

The utility model discloses a novel high-pressure centrifugal pump sealing cooling water circulating treatment system which comprises an evaporator, a condensate water outlet of the evaporator is connected with a liquid inlet of a circulating water storage tank through a liquid inlet module, and a liquid outlet of the circulating water storage tank is connected with an inlet of a change-over valve through a liquid outlet module. An outlet of the change-over valve is respectively connected with a cooling module and a mechanical seal cooling module in parallel, and the cooling module and the mechanical seal cooling module are respectively connected with a circulating water storage tank to form circulation, so that the cooling effect is ensured, cooling can be ensured even in high-temperature weather, meanwhile, the problem of scaling is avoided, and resources are reasonably utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of application of centrifugal pump circulating water systems, in particular to a novel high-pressure centrifugal pump sealed cooling water circulating treatment system. Background Art

[0002] The production of yellow phosphorus requires the use of a large number of high-pressure centrifugal pumps. Due to the high temperature of the material, the mechanical seals of the pumps are always in a high-temperature environment. If the mechanical seals are not cooled quickly, they are easily damaged, and replacing the mechanical seals is quite troublesome. The production system needs to be shut down for processing, which delays production continuity. In addition, if natural river water is used for a long time, due to the high calcium content in the river water, it is easy to cause scaling in the inlet and outlet water seal pipes and mechanical seals, clogging the inlet and outlet water pipes and seals, affecting the cooling effect. In summer, the ambient temperature is high, and the temperature of the cooling water itself is high. After entering the mechanical seal, the cooling effect is poor, and the pump seal temperature is always high, affecting the pump efficiency. If the mechanical seal leaks during equipment operation, the conveyed material will enter the cooling water system, causing the phosphorus content and other indicators of the cooling water system to exceed the standard and cannot be directly discharged. Utility Model Content

[0003] The utility model provides a novel high-pressure centrifugal pump seal cooling water circulation treatment system, which aims to solve the problems that the mechanical seal is easily damaged due to poor cooling effect, scaling affects the cooling effect, and cooling water is difficult to treat once the mechanical seal leaks.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A new high-pressure centrifugal pump sealed cooling water circulation treatment system includes an evaporator. The condensed water outlet of the evaporator is connected to the liquid inlet of a circulating water storage tank through a liquid inlet module. The liquid outlet of the circulating water storage tank is connected to the inlet of a conversion valve through a liquid outlet module. The outlet of the conversion valve is respectively connected in parallel with a cooling module and a mechanical seal cooling module. The cooling module and the mechanical seal cooling module are respectively connected to the circulating water storage tank to form a circulation.

[0006] Preferably, the circulating water storage tank is provided with a liquid level sensor and a temperature sensor, and the sensing ends of the liquid level sensor and the temperature sensor form an inductive coordination with the liquid in the circulating water storage tank, the liquid inlet module forms a linkage coordination with the liquid level sensor through an external controller, and the conversion valve and the cooling module form a linkage coordination with the temperature sensor through an external controller.

[0007] More preferably, the external controller is a PLC controller.

[0008] Furthermore, the liquid inlet module includes an inlet valve and a liquid inlet pump arranged in sequence along the conveying direction, the evaporator condensate outlet is connected to the inlet of the liquid inlet valve through a flange, the outlet of the liquid inlet valve is connected to the inlet of the liquid inlet pump through a pipe and a flange, and the outlet of the liquid inlet pump is connected to the inlet of the circulating water storage tank through a pipe and a flange.

[0009] Furthermore, the liquid outlet module includes a liquid outlet valve and a liquid outlet pump arranged in sequence along the conveying direction, the liquid outlet of the circulating water storage tank is connected to the inlet of the liquid outlet valve through a flange, the outlet of the liquid outlet valve is connected to the inlet of the liquid outlet pump through a pipe and a flange, and the outlet of the liquid outlet pump is connected to the inlet of the conversion valve through a pipe and a flange.

[0010] Specifically, the conversion valve is a three-way conversion valve.

[0011] More specifically, the cooling module includes a cooler and a first one-way valve. The inlet of the cooler is connected to one of the outlets of the conversion valve, and the outlet of the cooler is connected to the circulating water storage tank through the first one-way valve.

[0012] In detail, the mechanical seal cooling module includes a high-pressure centrifugal pump mechanical seal and a second one-way valve. The inlet of the high-pressure centrifugal pump mechanical seal is connected to the other outlet of the conversion valve, and the outlet of the high-pressure centrifugal pump mechanical seal is connected to the circulating water storage tank through the second one-way valve.

[0013] In more detail, a sewage outlet is provided on one side of the circulating water storage tank, and a sewage valve is provided at the sewage outlet.

[0014] Beneficial effects of the utility model:

[0015] 1. The circulating water used in the cooling water circulation system is the evaporated condensed water generated during the operation of the evaporator. Since the calcium content of the condensed water is low, it will not cause scaling and other problems when used in the circulation system;

[0016] 2. The circulating water treatment system is connected to an external circulation cooling system to ensure that the cooling water temperature is within the appropriate temperature range and to ensure the cooling effect of the centrifugal pump in a high temperature environment;

[0017] 3. The circulating water storage tank is equipped with a drain valve. If the centrifugal pump seal leaks and causes cooling water pollution, the system can be cut off and the circulating cooling water can be transported to the sewage treatment system to prevent the discharge of polluted water and affect environmental safety.

[0018] 4. Enhanced self-control through automatic temperature detection and liquid level detection of the circulating water storage tank. Automatically controlled by an external controller, the system automatically monitors the circulating water temperature. When it reaches the set temperature, the system automatically starts the external circulation to cool down. When the water level is lower than the set minimum level, the evaporator condensate inlet valve is opened to replenish water to ensure that the liquid level in the circulating water tank meets production needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of system connection of the present utility model;

[0020] In the figure: 1. Evaporator;

[0021] 2. Liquid inlet module; 201. Liquid inlet valve; 202. Liquid inlet pump;

[0022] 3. Circulating water storage tank;

[0023] 4. Liquid outlet module; 401. Liquid outlet valve; 402. Liquid outlet pump;

[0024] 5. Converter valve;

[0025] 6. Cooling module; 601. Cooler; 602. First one-way valve;

[0026] 7. Mechanical seal cooling module; 701. High-pressure centrifugal pump mechanical seal; 702. Second one-way valve;

[0027] 8. Drain valve; 9. Liquid level sensor; 10. Temperature sensor. DETAILED DESCRIPTION

[0028] As follows, embodiments are further described with reference to the accompanying drawings.

[0029] like Figure 1 As shown, as a preferred embodiment 1, a new high-pressure centrifugal pump sealed cooling water circulation treatment system includes an evaporator 1, the condensate outlet of the evaporator 1 is connected to the liquid inlet of the circulating water storage tank 3 through the liquid inlet module 2, the liquid outlet of the circulating water storage tank 3 is connected to the inlet of the conversion valve 5 through the liquid outlet module 4, and the outlet of the conversion valve 5 is respectively connected in parallel with a cooling module 6 and a mechanical seal cooling module 7, and the cooling module 6 and the mechanical seal cooling module 7 are respectively connected to the circulating water storage tank 3 to form a circulation.

[0030] The system uses the evaporated condensed water generated by the existing evaporator 1 as the cooling medium, which contains less calcium and avoids scaling in the circulation system. The evaporated condensed water is drawn by the liquid inlet module 2 and enters the circulating water storage tank 3 for storage and circulation. When the mechanical seal is circulated and cooled, the switching valve 5 is switched to connect the liquid outlet module 4 and the mechanical seal cooling module 7. The evaporated condensed water is drawn by the liquid outlet module 4 and enters the mechanical seal cooling module 7 to cool the mechanical seal. After cooling, it enters the circulating water storage tank 3 to form a continuous circulation cooling.

[0031] After cooling or when the ambient temperature causes the temperature of the evaporated condensed water to be too high, the conversion valve 5 switches to connect the liquid outlet module 4 and the cooling module 6. The evaporated condensed water is drawn through the liquid outlet module 4 and enters the cooling module 6 for cooling. The cooled evaporated condensed water flows back to the circulating water storage tank 3 until the temperature of the evaporated condensed water in the circulating water storage tank 3 is sufficient to cool the mechanical seal.

[0032] As a preferred embodiment 2, a liquid level sensor 9 and a temperature sensor 10 are provided on the circulating water storage tank 3, and the sensing ends of the liquid level sensor 9 and the temperature sensor 10 both form an induction coordination with the liquid in the circulating water storage tank 3, the liquid inlet module 2 forms a linkage coordination with the liquid level sensor 9 through an external controller, and the conversion valve 5 and the cooling module 6 form a linkage coordination with the temperature sensor 10 through an external controller.

[0033] When the liquid level sensor 9 detects that the liquid level in the circulating water storage tank 3 is too low, it sends a signal to the external controller. After receiving the signal, the external controller starts the liquid inlet module 2 to add liquid until the liquid level returns to the set value range, and then closes the liquid inlet module 2 to save energy and ensure that the water volume is within the set range, increasing the self-controllability, so that the water level is not too low to cause poor cooling effect, nor too high to affect the circulation and system stability;

[0034] When the temperature sensor 10 detects that the temperature of the liquid in the circulating water storage tank 3 is too high, it sends a signal to the external controller. After receiving the signal, the external controller switches the connection direction of the conversion valve 5 to connect the liquid outlet module 4 and the cooling module 6, and turns on the cooling module 6 to cool the liquid until the temperature enters the set range suitable for mechanical seal cooling. The cooling module 6 is closed and the connection direction of the conversion valve 5 is switched to connect the liquid outlet module 4 and the mechanical seal cooling module 7, saving energy and ensuring that the water temperature is within the set range, increasing self-control, and ensuring that the water temperature meets the mechanical seal cooling requirements. The cooling effect can be guaranteed even in hot weather.

[0035] The external controller is a PLC controller to ensure the formation of automatic control. The external controller can also be connected to the central control platform, where the corresponding monitoring values ​​can be read in real time.

[0036] Preferably, the PLC controller can be Delta DVP30EC00R3 PLC programmable controller, the liquid level sensor 9 can be Senruida SRDMB-61 submersible liquid level transmitter, and the temperature sensor 10 can be SENSIT NS series temperature sensor.

[0037] Preferably, the setting value of the liquid level sensor 9 is lower than the liquid inlet of the circulating water storage tank 3 to ensure smooth liquid inflow, and the temperature sensor 10 is arranged at the bottom of the circulating water storage tank 3 to ensure that it is always inductively connected to the liquid temperature.

[0038] The liquid inlet module 2 includes a liquid inlet valve 201 and a liquid inlet pump 202 arranged in sequence along the conveying direction. The condensed water outlet of the evaporator 1 is connected to the inlet of the liquid inlet valve 201 through a flange, the outlet of the liquid inlet valve 201 is connected to the inlet of the liquid inlet pump 202 through a pipe and a flange, and the outlet of the liquid inlet pump 202 is connected to the liquid inlet of the circulating water storage tank 3 through a pipe and a flange to ensure the driving force of the liquid inlet.

[0039] The liquid outlet module 4 includes a liquid outlet valve 401 and a liquid outlet pump 402 arranged in sequence along the conveying direction. The liquid outlet of the circulating water storage tank 3 is connected to the inlet of the liquid outlet valve 401 through a flange, and the outlet of the liquid outlet valve 401 is connected to the inlet of the liquid outlet pump 402 through a pipe and a flange. The outlet of the liquid outlet pump 402 is connected to the inlet of the conversion valve 5 through a pipe and a flange to ensure the driving force of the liquid outlet circulation.

[0040] The switching valve 5 is a three-way switching valve to ensure switching connectivity.

[0041] The cooling module 6 includes a cooler 601 and a first one-way valve 602. The inlet of the cooler 601 is connected to one of the outlets of the conversion valve 5. The outlet of the cooler 601 is connected to the circulating water storage tank 3 through the first one-way valve 602 to ensure one-way circulation.

[0042] Preferably, the cooler 601 may use a plate heat exchanger, and the heat exchange source may be waste cooling sources in the factory for heat recovery.

[0043] The mechanical seal cooling module 7 includes a high-pressure centrifugal pump mechanical seal 701 and a second one-way valve 702. The inlet of the high-pressure centrifugal pump mechanical seal 701 is connected to the other outlet of the conversion valve 5. The outlet of the high-pressure centrifugal pump mechanical seal 701 is connected to the circulating water storage tank 3 through the second one-way valve 702 to ensure one-way circulation and cool the high-pressure centrifugal pump mechanical seal 701.

[0044] A drain port is provided on one side of the circulating water storage tank 3, and a drain valve 8 is provided at the drain port. It is closed under normal conditions, and when the cooling water needs to be replaced, the drain valve 8 is opened to prevent the contaminated water from being discharged and ensure the cleanliness of the circulating cooling water.

[0045] The working principle of this utility model:

[0046] The system uses the evaporated condensed water generated by the existing evaporator 1 as the cooling medium, which contains less calcium and avoids scaling in the circulation system. The evaporated condensed water is drawn by the liquid inlet module 2 and enters the circulating water storage tank 3 for storage and circulation. When the mechanical seal is circulated and cooled, the switching valve 5 is switched to connect the liquid outlet module 4 and the mechanical seal cooling module 7. The evaporated condensed water is drawn by the liquid outlet module 4 and enters the mechanical seal cooling module 7 to cool the mechanical seal. After cooling, it enters the circulating water storage tank 3 to form a continuous circulation cooling.

[0047] After cooling or when the ambient temperature causes the temperature of the evaporated condensed water to be too high, the conversion valve 5 switches to connect the liquid outlet module 4 and the cooling module 6. The evaporated condensed water is drawn through the liquid outlet module 4 and enters the cooling module 6 for cooling. The cooled evaporated condensed water flows back to the circulating water storage tank 3 until the temperature of the evaporated condensed water in the circulating water storage tank 3 is sufficient to cool the mechanical seal.

[0048] Furthermore, self-control can be achieved through the liquid level sensor 9, the temperature sensor 10 and the external controller.

Claims

1. A novel high-pressure centrifugal pump sealed cooling water circulation treatment system, comprising an evaporator (1), characterized in that: The condensed water outlet of the evaporator (1) is connected to the liquid inlet of the circulating water storage tank (3) through the liquid inlet module (2), and the liquid outlet of the circulating water storage tank (3) is connected to the inlet of the conversion valve (5) through the liquid outlet module (4). The outlet of the conversion valve (5) is respectively connected in parallel with a cooling module (6) and a mechanical seal cooling module (7), and the cooling module (6) and the mechanical seal cooling module (7) are respectively connected to the circulating water storage tank (3) to form a circulation.

2. A novel high-pressure centrifugal pump sealed cooling water circulation treatment system according to claim 1, characterized in that: The circulating water storage tank (3) is provided with a liquid level sensor (9) and a temperature sensor (10), and the sensing ends of the liquid level sensor (9) and the temperature sensor (10) both form a sensing cooperation with the liquid in the circulating water storage tank (3), the liquid inlet module (2) forms a linkage cooperation with the liquid level sensor (9) through an external controller, and the conversion valve (5) and the cooling module (6) form a linkage cooperation with the temperature sensor (10) through the external controller.

3. A new type of high-pressure centrifugal pump sealed cooling water circulation treatment system according to claim 2, characterized in that: The external controller is a PLC controller.

4. A novel high-pressure centrifugal pump sealed cooling water circulation treatment system according to claim 3, characterized in that: The liquid inlet module (2) comprises a liquid inlet valve (201) and a liquid inlet pump (202) arranged in sequence along the conveying direction; the condensed water outlet of the evaporator (1) is connected to the inlet of the liquid inlet valve (201) via a flange; the outlet of the liquid inlet valve (201) is connected to the inlet of the liquid inlet pump (202) via a pipe and a flange; and the outlet of the liquid inlet pump (202) is connected to the liquid inlet of the circulating water storage tank (3) via a pipe and a flange.

5. A novel high-pressure centrifugal pump sealed cooling water circulation treatment system according to claim 4, characterized in that: The liquid outlet module (4) comprises a liquid outlet valve (401) and a liquid outlet pump (402) arranged in sequence along the conveying direction; the liquid outlet of the circulating water storage tank (3) is connected to the inlet of the liquid outlet valve (401) via a flange; the outlet of the liquid outlet valve (401) is connected to the inlet of the liquid outlet pump (402) via a pipe and a flange; and the outlet of the liquid outlet pump (402) is connected to the inlet of the conversion valve (5) via a pipe and a flange.

6. A novel high-pressure centrifugal pump sealed cooling water circulation treatment system according to claim 5, characterized in that: The conversion valve (5) is a three-way conversion valve.

7. A novel high-pressure centrifugal pump sealed cooling water circulation treatment system according to claim 6, characterized in that: The cooling module (6) comprises a cooler (601) and a first one-way valve (602). The inlet of the cooler (601) is connected to one of the outlets of the conversion valve (5), and the outlet of the cooler (601) is connected to the circulating water storage tank (3) via the first one-way valve (602).

8. A novel high-pressure centrifugal pump sealed cooling water circulation treatment system according to claim 7, characterized in that: The mechanical seal cooling module (7) comprises a high-pressure centrifugal pump mechanical seal (701) and a second one-way valve (702), wherein the inlet of the high-pressure centrifugal pump mechanical seal (701) is connected to the other outlet of the conversion valve (5), and the outlet of the high-pressure centrifugal pump mechanical seal (701) is connected to the circulating water storage tank (3) via the second one-way valve (702).

9. A novel high-pressure centrifugal pump sealed cooling water circulation treatment system according to claim 8, characterized in that: A sewage outlet is provided on one side of the circulating water storage tank (3), and a sewage valve (8) is provided at the sewage outlet.

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