Vacuum device for membrane oxygen removal systems

Abstract

The utility model discloses a vacuum device for membrane oxygen removal system belongs to membrane oxygen removal technical field. Be applicable to the adjustment and control of vacuum degree among membrane oxygen removal system. The device includes control system, liquid ring vacuum pump, gas -liquid separator, heat exchanger, temperature transmitter, control valve, pressure transmitter and cooling water import and export. Through the adjustment of control system, liquid ring vacuum pump controls the operation frequency according to the negative pressure data of membrane oxygen removal system, and carries out temperature regulation to the coolant of liquid ring vacuum pump through heat exchanger, keeps vacuum pump under the operation of optimum working temperature. Gas -liquid separator is used for separating gas -liquid mixture, and heat exchanger cools the liquid after separation. Temperature transmitter real -time monitoring coolant temperature, and pressure transmitter monitors system negative pressure data, provides data support for control system, ensures that system is high -efficient and stable operation.

Description

Technical Field

[0001] This application relates to the field of membrane deoxygenation technology, and in particular to a vacuum device for a membrane deoxygenation system. Background Technology

[0002] With the continuous development of water treatment technology, membrane deoxygenation technology has become an important means of removing dissolved oxygen from water, and is widely used in pure water production, steam boilers, and high-purity water systems in the electronics industry. Membrane deoxygenation devices utilize the selective permeability of membrane contactors to achieve efficient mass transfer between gas and liquid, and are particularly suitable for removing dissolved oxygen from water without adding chemicals.

[0003] Currently, common membrane deoxygenation systems typically use liquid ring vacuum pumps to create a vacuum. This system achieves deoxygenation by controlling the vacuum level on the gas side. In existing technologies, liquid ring vacuum pumps are used to maintain the negative pressure in the membrane deoxygenation unit, but this approach has several drawbacks. First, existing membrane deoxygenation systems cannot automatically switch pumps in a timely manner when equipment malfunctions, easily causing system interruptions and affecting continuous operation. Second, existing systems cannot automatically regulate negative pressure, often generating high negative pressures (e.g., -0.095 MPa) during operation, leading to increased energy consumption. Finally, the coolant used by the liquid ring vacuum pump cannot be effectively recovered, resulting in energy waste.

[0004] Therefore, in view of the problems in the existing technology, there is an urgent need for an improved membrane deoxygenation system that can automatically switch when the equipment fails, and can automatically regulate the negative pressure during operation and recycle the coolant, thereby improving the stability and energy efficiency of the system. Utility Model Content

[0005] This invention provides a vacuum device for a membrane deoxygenation system. It can solve the aforementioned problems existing in related technologies. The technical solution is as follows:

[0006] This application provides a vacuum device for a membrane deoxygenation system. The vacuum device for a membrane deoxygenation system is suitable for membrane deoxygenation systems and includes:

[0007] It includes a control system 1, a liquid ring vacuum pump 2, a gas-liquid separator 3, a heat exchanger 4, a temperature transmitter 5, control valves 6, a pressure transmitter 7, a circulating cooling water inlet 8, and a circulating cooling water outlet 9; among which,

[0008] Control system 1 is connected to liquid ring vacuum pump 2, control valve 6, temperature transmitter 5, pressure transmitter 7, and heat exchanger 4; liquid ring vacuum pump 2 is connected to gas-liquid separator 3, which is responsible for separating gas-liquid mixtures, and the gas is discharged through the exhaust port; heat exchanger 4 is connected to circulating cooling water inlet 8 and circulating cooling water outlet 9, and the cooling water is used to regulate the cooling liquid temperature of liquid ring vacuum pump; temperature transmitter 5 is connected to heat exchanger 4, which is used to monitor the cooling liquid temperature and feed it back to control system 1;

[0009] Pressure transmitter 7 is used to monitor system pressure in real time and feed back negative pressure data to membrane deoxygenation system 1; control system 1 is used to detect abnormalities in negative pressure data; control system 1 is used to regulate the operation of liquid ring vacuum pump 2 based on negative pressure data from membrane deoxygenation system 1.

[0010] The gas-liquid separator 3 is used to separate the gas-liquid mixture generated during the operation of the liquid ring vacuum pump 2 to obtain separated gas and separated liquid; the heat exchanger 4 is used to cool the separated liquid to obtain coolant; the temperature transmitter 5 is used to detect the temperature of the coolant.

[0011] Optionally, the control system 1 is also used to switch the liquid ring vacuum pump 2 and control valve 6 for abnormal recovery until the vacuum level of the membrane deoxygenation system is restored.

[0012] Optionally, the control system 1 is also used to reduce the operating frequency of the liquid ring vacuum pump 2 when the negative pressure data of the membrane deoxygenation system 1 is less than the preset vacuum level.

[0013] Optionally, the control system 1 is also used to increase the operating frequency of the liquid ring vacuum pump 2 when the negative pressure data of the membrane deoxygenation system 1 is greater than the preset vacuum degree.

[0014] Optionally, the vacuum level of the controlled membrane deoxygenation system 1 is maintained at a preset vacuum level, the value of which is set according to the operating energy consumption of the liquid ring vacuum pump 2.

[0015] Optionally, the preset vacuum level is less than -0.085 MPa.

[0016] Optionally, the separated gas can be released into the atmosphere.

[0017] Optionally, the control system 1 adjusts the temperature of the coolant in the liquid ring vacuum pump 2 by controlling the flow rate of the circulating coolant in the heat exchanger 4, wherein the temperature of the coolant in the liquid ring vacuum pump 2 is ultimately controlled between 5°C and 25°C.

[0018] This application relates to a vacuum device for a membrane deoxygenation system, suitable for adjusting and controlling the vacuum level in the system. The device includes a control system, a liquid ring vacuum pump, a gas-liquid separator, a heat exchanger, a temperature transmitter, control valves, a pressure transmitter, and cooling water inlet and outlet. Through the control system, the liquid ring vacuum pump adjusts its operating frequency based on the negative pressure data of the membrane deoxygenation system, and the heat exchanger regulates the temperature of the coolant in the liquid ring vacuum pump, maintaining the pump at its optimal operating temperature. The gas-liquid separator separates the gas-liquid mixture, while the heat exchanger cools the separated liquid. The temperature transmitter monitors the coolant temperature in real time, and the pressure transmitter monitors the system's negative pressure data, providing data support to the control system and ensuring efficient and stable system operation.

[0019] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram of the control system location is shown;

[0022] Figure 2 This is a schematic diagram of the structure of a vacuum device for a membrane deoxygenation system provided in an illustrative embodiment of this application;

[0023] Figure 3 The corresponding Figure 2 Another perspective illustration. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0025] Example 1

[0026] Please refer to Figures 1 to 3 , Figure 1 A schematic diagram of the control system location is shown. Figure 2 This application illustrates a schematic diagram of the structure of a vacuum device for a membrane deoxygenation system according to an exemplary embodiment. Figure 3 The corresponding Figure 2 Another perspective illustration.

[0027] This application provides a vacuum device for a membrane deoxygenation system. The vacuum device for a membrane deoxygenation system is suitable for membrane deoxygenation systems and includes:

[0028] It includes a control system 1, a liquid ring vacuum pump 2, a gas-liquid separator 3, a heat exchanger 4, a temperature transmitter 5, a control valve 6, a pressure transmitter 7, a circulating cooling water inlet 8, and a circulating cooling water outlet 9; among which, the control system is equivalent to an electrical cabinet, and the membrane deoxygenation system is connected to the control system via a vacuum device through a cable.

[0029] The control system 1 is connected to the liquid ring vacuum pump 2, control valve 6, temperature transmitter 5, pressure transmitter 7, and heat exchanger 4; the liquid ring vacuum pump 2 is connected to the gas-liquid separator 3, which is responsible for separating the gas-liquid mixture, and the gas is discharged through the exhaust port; the heat exchanger 4 is connected to the circulating cooling water inlet 8 and the circulating cooling water outlet 9, and the cooling water is used to regulate the cooling liquid temperature of the liquid ring vacuum pump; the temperature transmitter 5 is connected to the heat exchanger 4, which is used to monitor the cooling liquid temperature and feed it back to the control system 1.

[0030] The pressure transmitter 7 is used to monitor the system pressure in real time and feed back the negative pressure data to the membrane deoxygenation system 1; the control system 1 is used to detect abnormalities in the negative pressure data; the control system 1 is used to regulate the operation of the liquid ring vacuum pump 2 based on the negative pressure data of the membrane deoxygenation system 1.

[0031] The gas-liquid separator 3 is used to separate the gas-liquid mixture generated during the operation of the liquid ring vacuum pump 2 to obtain separated gas and separated liquid; the heat exchanger 4 is used to cool the separated liquid to obtain coolant; the temperature transmitter 5 is used to detect the temperature of the coolant.

[0032] After separation, the gas is released into the atmosphere. The gas-liquid mixture generated during the operation of the liquid ring vacuum pump is separated by a gas-liquid separator, and the gas is released into the atmosphere, ensuring the stability of the system and pollution-free emissions.

[0033] The effective separation by the gas-liquid separator ensures the normal operation of the liquid ring vacuum pump while avoiding gas pollution emissions, thus improving the environmental friendliness of the system.

[0034] In summary, the vacuum unit for a membrane deoxygenation system includes a control system, a liquid ring vacuum pump, a gas-liquid separator, a heat exchanger, a temperature transmitter, control valves, a pressure transmitter, and cooling water inlet / outlet. The control system, connected to the liquid ring vacuum pump, temperature transmitter, pressure transmitter, and heat exchanger, adjusts the operating status of the liquid ring vacuum pump and the coolant temperature in real time to ensure the system operates at a preset vacuum level. The liquid ring vacuum pump is connected to the gas-liquid separator to separate the gas-liquid mixture, with the gas discharged through the exhaust port. The heat exchanger regulates the cooling water flow rate, the temperature transmitter provides real-time feedback on the coolant temperature, and the pressure transmitter monitors the system's negative pressure.

[0035] This application provides a system that automatically adjusts the vacuum level and optimizes the coolant temperature to ensure the stable and efficient operation of the membrane deoxygenation system, avoids coolant waste, and improves the system's energy efficiency and reliability through precise pressure and temperature control.

[0036] Example 2

[0037] Optionally, the control system 1 is also used to switch the liquid ring vacuum pump 2 and control valve 6 for abnormal recovery until the vacuum level of the membrane deoxygenation system is restored.

[0038] When the liquid ring vacuum pump or control valve malfunctions, the control system automatically switches to recovery mode, readjusts the working state of the liquid ring vacuum pump, and restores the normal vacuum level of the membrane deoxygenation system.

[0039] The fault recovery function ensures that the membrane deoxygenation system can quickly return to normal when problems occur, reducing system downtime and improving equipment stability and maintenance efficiency.

[0040] Example 3

[0041] Optionally, the control system 1 is also used to reduce the operating frequency of the liquid ring vacuum pump 2 when the negative pressure data of the membrane deoxygenation system 1 is less than the preset vacuum level.

[0042] When the negative pressure data of the membrane deoxygenation system is less than the preset vacuum level, the control system reduces energy consumption and maintains system stability by decreasing the operating frequency of the liquid ring vacuum pump.

[0043] This measure effectively reduced the energy consumption of the liquid ring vacuum pump and improved the system's energy efficiency. By monitoring the system's negative pressure in real time, it ensured that the equipment could still operate efficiently under low load conditions.

[0044] Example 4

[0045] Optionally, the control system 1 is also used to increase the operating frequency of the liquid ring vacuum pump 2 when the negative pressure data of the membrane deoxygenation system 1 is greater than the preset vacuum degree.

[0046] When the negative pressure data of the membrane deoxygenation system exceeds the preset vacuum level, the control system automatically increases the operating frequency of the liquid ring vacuum pump to ensure that the system reaches the required vacuum level.

[0047] When the load is high, increasing the operating frequency of the liquid ring vacuum pump ensures that the membrane deoxygenation system can reach the required vacuum level, thereby improving the system's response speed and operating efficiency.

[0048] Example 5

[0049] Optionally, the vacuum level of the controlled membrane deoxygenation system 1 is maintained at a preset vacuum level, the value of which is set according to the operating energy consumption of the liquid ring vacuum pump 2.

[0050] The control system adjusts and maintains the vacuum level of the membrane deoxygenation system within a preset range based on the operating energy consumption of the liquid ring vacuum pump, ensuring optimal energy efficiency during system operation.

[0051] By adjusting system operation based on energy consumption, it is possible to minimize unnecessary energy consumption while ensuring performance, thereby improving the system's economy.

[0052] Example 6

[0053] Optionally, depending on the specific application, the vacuum level needs to be less than -0.085 MPa to ensure the deoxygenation effect of the membrane deoxygenation system. However, the lower the vacuum level, the higher the energy consumption of the vacuum pump. The vacuum level of -0.085 MPa is a critical value measured by experiments. Only by reaching this critical value can the deoxygenation effect be guaranteed. The preset vacuum level is set to be less than -0.085 MPa to ensure the working efficiency of the liquid ring vacuum pump and the stability of the system.

[0054] Setting a reasonable preset vacuum value can optimize the working efficiency of the membrane deoxygenation system, allowing the liquid ring vacuum pump to achieve its best performance within this range.

[0055] Example 7

[0056] Optionally, the control system 1 adjusts the temperature of the coolant in the liquid ring vacuum pump 2 by controlling the flow rate of the circulating coolant in the heat exchanger 4, wherein the temperature of the coolant in the liquid ring vacuum pump 2 is ultimately controlled between 5°C and 25°C.

[0057] The control system regulates the flow rate of the coolant in the heat exchanger to control the coolant temperature of the liquid ring vacuum pump, ensuring that the coolant temperature is maintained between 5℃ and 25℃ to prevent coolant waste. Precise control of the coolant flow rate ensures that the liquid ring vacuum pump operates within a safe temperature range, avoiding coolant waste, saving energy, and improving the system's continuous operating capability.

[0058] The above are merely optional embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A vacuum device for a membrane deoxygenation system, characterized in that, The vacuum device for the membrane deoxygenation system is suitable for membrane deoxygenation systems, and the device includes: It includes a control system (1), a liquid ring vacuum pump (2), a gas-liquid separator (3), a heat exchanger (4), a temperature transmitter (5), control valves (6), a pressure transmitter (7), a circulating cooling water inlet (8), and a circulating cooling water outlet (9); among which, The control system (1) is connected to the liquid ring vacuum pump (2), the control valve (6), the temperature transmitter (5), the pressure transmitter (7), and the heat exchanger (4); the liquid ring vacuum pump (2) is connected to the gas-liquid separator (3) and is responsible for separating the gas-liquid mixture, with the gas discharged through the exhaust port; the heat exchanger (4) is connected to the circulating cooling water inlet (8) and the circulating cooling water outlet (9) and regulates the coolant temperature of the liquid ring vacuum pump through the cooling water; the temperature transmitter (5) is connected to the heat exchanger (4) and is used to monitor the coolant temperature and feed it back to the control system (1). The pressure transmitter (7) is used to monitor the system pressure in real time and feed back the negative pressure data to the membrane deoxygenation system; the control system (1) is used to detect abnormalities in the negative pressure data; the control system (1) is used to regulate the operation of the liquid ring vacuum pump (2) based on the negative pressure data of the membrane deoxygenation system. The gas-liquid separator (3) is used to separate the gas-liquid mixture generated during the operation of the liquid ring vacuum pump (2) to obtain separated gas and separated liquid; the heat exchanger (4) is used to cool the separated liquid to obtain coolant; the temperature transmitter (5) is used to detect the temperature of the coolant.

2. The vacuum device for the membrane deoxygenation system according to claim 1, characterized in that, The control system (1) is also used to switch the liquid ring vacuum pump (2) and the control valve (6) to perform abnormal recovery until the vacuum degree of the membrane deoxygenation system is restored.

3. The vacuum device for the membrane deoxygenation system according to claim 1, characterized in that, The control system (1) is also used to reduce the operating frequency of the liquid ring vacuum pump (2) when the negative pressure data of the membrane deoxygenation system is less than the preset vacuum level.

4. The vacuum device for the membrane deoxygenation system according to claim 3, characterized in that, The control system (1) is also used to increase the operating frequency of the liquid ring vacuum pump (2) when the negative pressure data of the membrane deoxygenation system is greater than the preset vacuum degree.

5. The vacuum device for a membrane deoxygenation system according to claim 3 or 4, characterized in that, The vacuum level of the membrane deoxygenation system after control is maintained at the preset vacuum level, and the value of the preset vacuum level is set according to the operating energy consumption of the liquid ring vacuum pump (2).

6. The vacuum device for a membrane deoxygenation system according to claim 3 or 4, characterized in that, The preset vacuum level is less than -0.085 MPa.

7. The vacuum device for the membrane deoxygenation system according to claim 1, characterized in that, The separated gas is released into the atmosphere.

8. The vacuum device for the membrane deoxygenation system according to claim 1, characterized in that, The control system (1) regulates the temperature of the coolant in the liquid ring vacuum pump (2) by controlling the flow rate of the coolant circulating in the heat exchanger (4), wherein the temperature of the coolant in the liquid ring vacuum pump (2) is ultimately controlled at 5℃~25℃.

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