A constant pressure water supply vacuum degassing device

Abstract

This utility model relates to the field of water replenishment and degassing technology for thermal systems, and proposes a constant pressure water replenishment and vacuum degassing device, comprising: a mounting base, an expansion tank fixedly connected to the top of the mounting base, an expansion tank mounting port fixedly connected to the bottom of the expansion tank, a main pipe bolted to the bottom of the expansion tank mounting port, an outlet pipe fixedly connected to the circumferential surface of the main pipe, an inlet pipe fixedly connected to the circumferential surface of the main pipe, a degassing tank fixedly connected to the top of the mounting base, a degassing valve fixedly connected to one side of the degassing tank, one end of the inlet pipe bolted to one end of the degassing valve, a parallel pipe bolted to the side of the degassing tank away from the degassing valve, a branch pipe fixedly connected to the circumferential surface of the parallel pipe, and a control cabinet mounted on the top of the mounting base. This technical solution solves the problem of water replenishment and degassing in existing thermal systems.

Description

Technical Field

[0001] This utility model relates to the field of water replenishment and degassing technology for thermal systems, specifically to a constant pressure water replenishment and vacuum degassing device. Background Technology

[0002] In the operation of a thermal system, water replenishment and degassing are crucial steps. Existing water replenishment and degassing devices suffer from problems such as unstable water replenishment, incomplete degassing, and large system pressure fluctuations, which affect the normal operation and efficiency of the thermal system.

[0003] According to the publicly disclosed constant-pressure water-replenishing vacuum degassing device (publication number: CN203794659U), it includes an atmospheric pressure tank, a vacuum degassing tank, a controller, an external water inlet, a safety device, a water inlet, and a water outlet. The water inlet is connected to the vacuum degassing tank via a degassing water inlet valve. The vacuum degassing tank is connected to the atmospheric pressure tank via a degassing water replenishment function switching valve. The degassing water replenishment function switching valve is connected to the water outlet via a water pump. The safety device is installed on the water pipe between the degassing water replenishment function switching valve and the atmospheric pressure tank. The external water inlet is connected to the atmospheric pressure tank sequentially via a water replenishment solenoid valve and a drain solenoid valve. This utility model provides a constant-pressure water-replenishing vacuum degassing device with good safety performance, high degree of automation, convenient and precise operation, and environmentally friendly and efficient operation.

[0004] The above applications have some problems. For example, in some devices, the water replenishment and degassing processes interfere with each other and are difficult to carry out simultaneously and efficiently; some devices have complex structures, are cumbersome to operate, and have high maintenance costs. Utility Model Content

[0005] This invention proposes a constant pressure water replenishment and vacuum degassing device, which solves the problem in related technologies that the water replenishment and degassing processes interfere with each other and are difficult to perform simultaneously and efficiently.

[0006] According to one aspect, at least one embodiment of this disclosure provides a constant pressure water replenishment vacuum degassing device, comprising: a mounting base, an expansion tank fixedly connected to the top of the mounting base, an expansion tank mounting port fixedly connected to the bottom of the expansion tank, a main pipe bolted to the bottom of the expansion tank mounting port, an outlet pipe fixedly connected to the circumferential surface of the main pipe, an inlet pipe fixedly connected to the circumferential surface of the main pipe, a degassing tank fixedly connected to the top of the mounting base, a degassing valve fixedly connected to one side of the degassing tank, and one end of the inlet pipe... A bolt is bolted to one end of the degassing valve. A parallel pipeline is bolted to the side of the degassing tank away from the degassing valve. A branch pipeline is fixedly connected to the circumference of the parallel pipeline. A water pump is fixedly installed on the top of the mounting base. One end of the branch pipeline is bolted to one side of the water pump. The other end of the water pump is fixedly connected to an inlet valve. A water tank is fixedly connected to the top of the mounting base. One end of the parallel water pipe is fixedly connected to the circumference of the water tank. A control cabinet is installed on the top of the mounting base. A pressure regulating device is installed on the top of the water tank.

[0007] The pressure regulating device includes a spring base, the circumferential surface of which is slidably connected to the inner wall of the water tank. A spring is fixedly connected to the top of the spring base, a sealing ring is fixedly connected to the circumferential surface of the spring base, a transmission column is fixedly connected to the top of the spring base, a transmission plate is fixedly connected to one end of the transmission column, a positioning column is fixedly connected to the top of the water tank, one end of the positioning column passes through the top of the transmission plate, a trigger rod is fixedly connected to the end of the transmission plate away from the water tank, a limit column is fixedly connected to the top of the water pump, and a water pump trigger switch is fixedly connected to the top of the limit column.

[0008] For example, in at least one embodiment of the constant pressure water replenishment vacuum degassing device provided in this disclosure, the device further includes: a limiting groove is formed at the top of the limiting column, the limiting groove is located on the displacement trajectory of the trigger rod, and the water pump trigger switch is located on the displacement trajectory of the trigger rod, allowing the trigger rod to accurately trigger the water pump trigger switch during displacement, ensuring timely start and stop of the water pump, and improving the timeliness and accuracy of water replenishment. One end of the transmission column located on the transmission plate is higher than the top of the water pump, and the diameter of the protruding part is equal to the depth of the limiting groove formed at the top of the limiting column, which helps to ensure precise matching between the trigger rod and the limiting groove, preventing the trigger rod from shifting or jamming during movement, thereby improving the stability and reliability of the device. Three positioning columns are provided and arranged circumferentially on the top of the water tank, providing stable support and guidance, ensuring the stability of the transmission plate during movement, and enhancing the structural stability of the entire device. The through-parts of the positioning columns and the transmission plate are slidably connected, and the diameter of the cylindrical protrusion at the bottom of the transmission plate is the same as the diameter of the recessed part at the top of the water tank, ensuring a tight fit between the transmission plate and the water tank.

[0009] According to another aspect, at least one embodiment of this disclosure also provides a constant pressure water replenishment vacuum degassing device, comprising: a pressure regulating device provided on the top of the water tank, the pressure regulating device including a protective shell, the bottom of the protective shell being fixedly connected to one end of the positioning column penetrating the transmission plate, an electric telescopic rod being fixedly connected to the top of the inner wall of the protective shell, a spring pressure plate being fixedly connected to the telescopic end of the electric telescopic rod, the telescopic end of the electric telescopic rod being slidably connected to the inner wall side of the transmission column, the inner wall side of the spring pressure plate being slidably connected to the side of the transmission column, the bottom of the spring pressure plate being fixedly connected to one end of a spring, and a pressure plate limiting groove being provided on the side of the transmission column.

[0010] For example, in at least one embodiment of the constant pressure water replenishment vacuum degassing device provided in this disclosure, it further includes: a plurality of heat dissipation holes are provided on the protective shell and are arranged circumferentially on the circumferential surface of the protective shell. This effectively dissipates the heat generated during the operation of the electric telescopic rod, extends its service life, and improves the heat dissipation performance of the entire pressure regulating device. A sealing gasket is provided between the bottom of the protective shell and one end of the positioning column that penetrates the transmission plate. The sealing gasket is made of corrosion-resistant rubber. This effectively prevents water vapor and dust from entering the pressure regulating device from the connection point, ensuring its normal operation. The bottom of the pressure plate limiting groove is located at the top of the minimum displacement diameter of the spring, and the diameter of the pressure plate limiting groove is smaller than the maximum displacement diameter of the spring. This ensures that the spring remains stable during compression and extension, prevents excessive displacement of the spring pressure plate from causing damage to the device, thereby improving the reliability and safety of the device. The diameter of the spring pressure plate is larger than the diameter of the spring, and a spring care hole is provided on the spring pressure plate. The care hole facilitates the maintenance and inspection of the spring, improving the maintenance convenience of the device.

[0011] The working principle and beneficial effects of this utility model are as follows:

[0012] 1. This utility model achieves stable regulation of system pressure through a pressure-regulating device. When the system pressure decreases, the spring base slides down inside the water tank, the transmission column drives the transmission plate to move, the trigger rod triggers the water pump's trigger switch, and the water pump starts to replenish water, restoring the system pressure to stability. When the system pressure returns to normal, the spring's rebound force resets the pressure-regulating device, and the water pump stops working. This design allows for automatic system pressure regulation without frequent manual intervention, improving system stability and reliability, reducing the risk of equipment damage due to pressure fluctuations, and extending the equipment's service life.

[0013] 2. This utility model further enhances the precise control of system pressure through a force adjustment device. The extension and retraction of the electric telescopic rod drives the spring pressure plate to slide on the transmission column, thereby applying different pressures to the spring and achieving fine adjustment of the system pressure. The heat dissipation holes on the protective shell effectively dissipate the heat generated by the electric telescopic rod during operation, improving the heat dissipation performance of the device and extending the service life of the electric telescopic rod. At the same time, the sealing gasket effectively prevents moisture and dust from entering the pressure regulating device from the connection point, ensuring its normal operation. Attached Figure Description

[0014] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0015] Figure 1 This is a three-dimensional appearance structure diagram of the present utility model;

[0016] Figure 2 This is a schematic diagram of a three-dimensional partial structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the three-dimensional constant pressure device of this utility model;

[0018] Figure 4 This is a partial structural diagram of the three-dimensional constant pressure device of this utility model;

[0019] Figure 5 This is a cross-sectional enlarged structural schematic diagram of the three-dimensional pressure adjustment device of this utility model;

[0020] In the diagram: 1. Mounting base; 2. Expansion tank; 201. Expansion tank mounting port; 3. Main pipeline; 4. Outlet pipeline; 5. Inlet pipeline; 6. Degassing tank; 601. Degassing valve; 7. Parallel pipeline; 701. Branch pipeline; 8. Water pump; 801. Inlet valve; 9. Water tank; 10. Control cabinet; 11. Pressure regulating device; 1101. Spring base; 1102. Sealing ring; 1103. Transmission column; 1104. Transmission plate; 1105. Trigger rod; 1106. Limiting column; 1107. Water pump trigger switch; 1108. Positioning column; 1109. Spring; 12. Pressure regulating device; 1201. Protective shell; 1202. Electric telescopic rod; 1203. Spring pressure plate; 1204. Pressure plate limiting groove. Detailed Implementation

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0022] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Example 1

[0026] like Figures 1-5The diagram illustrates a constant pressure water replenishment vacuum degassing device according to an embodiment of this disclosure, comprising: a mounting base 1; an expansion tank 2 fixedly connected to the top of the mounting base 1; an expansion tank mounting port 201 fixedly connected to the bottom of the expansion tank 2; a main pipe 3 bolted to the bottom of the expansion tank mounting port 201; an outlet pipe 4 and an inlet pipe 5 fixedly connected to the circumferential surface of the main pipe 3; a degassing tank 6 fixedly connected to the top of the mounting base 1; a degassing valve 601 fixedly connected to one side of the degassing tank 6; and one end of the inlet pipe 5 bolted to the degassing valve 601. At one end of the degassing tank 6, a parallel pipeline 7 is bolted to the side away from the degassing valve 601. A branch pipeline 701 is fixedly connected to the circumferential surface of the parallel pipeline 7. A water pump 8 is fixedly installed on the top of the mounting base 1. One end of the branch pipeline 701 is bolted to one side of the water pump 8. The other end of the water pump 8 is fixedly connected to the inlet valve 801. A water tank 9 is fixedly connected to the top of the mounting base 1. One end of the parallel water pipe is fixedly connected to the circumferential surface of the water tank 9. A control cabinet 10 is installed on the top of the mounting base 1. A pressure regulating device 11 is installed on the top of the water tank 9.

[0027] The pressure regulating device 11 includes a spring base 1101, the circumferential surface of which is slidably connected to the inner wall of the water tank 9. A spring 1109 is fixedly connected to the top of the spring base 1101, a sealing ring 1102 is fixedly connected to the circumferential surface of the spring base 1101, a transmission column 1103 is fixedly connected to the top of the spring base 1101, a transmission plate 1104 is fixedly connected to one end of the transmission column 1103, a positioning column 1108 is fixedly connected to the top of the water tank 9, one end of the positioning column 1108 passes through the top of the transmission plate 1104, a trigger rod 1105 is fixedly connected to the end of the transmission plate 1104 away from the water tank 9, a limit column 1106 is fixedly connected to the top of the water pump 8, and a water pump trigger switch 1107 is fixedly connected to the top of the limit column 1106. This design can effectively regulate the pressure inside the water tank 9, ensuring stable system pressure. At the same time, through the cooperation of the electric telescopic rod 1202 and the spring pressure plate 1203, precise control of the spring 1109 can be achieved, improving the accuracy and response speed of pressure regulation.

[0028] In some examples, the design includes: a limiting groove on the top of the limiting post 1106, located on the displacement trajectory of the trigger rod 1105, and the water pump trigger switch 1107 located on the displacement trajectory of the trigger rod 1105. This design allows the trigger rod 1105 to accurately trigger the water pump trigger switch 1107 during displacement, ensuring timely start and stop of the water pump 8 and improving the timeliness and accuracy of water replenishment. The transmission post 1103 is located at one end of the transmission plate 1104 that is higher than the top of the water pump 8, and the diameter of the protruding part is equal to the depth of the limiting groove on the top of the limiting post 1106. This helps ensure precise engagement between the trigger rod 1105 and the limiting groove, preventing the trigger rod 1105 from shifting or jamming during movement, thereby improving the stability and reliability of the device. Three positioning posts 1108 are arranged in a circumferential array on the top of the water tank 9. This layout provides stable support and guidance, ensuring the smoothness of the transmission plate 1104 during movement, while also enhancing the structural stability of the entire device. The positioning column 1108 and the transmission plate 1104 are slidably connected through the part. The diameter of the cylindrical protrusion at the bottom of the transmission plate 1104 is the same as the diameter of the concave part at the top of the water tank 9. This design can ensure a tight fit between the transmission plate 1104 and the water tank 9, prevent the transmission plate 1104 from shaking or shifting during movement, and further improve the stability and accuracy of the device.

[0029] For example, as shown in the figure, when the system pressure decreases, the pressure in water tank 9 also decreases. At this time, the spring base 1101 moves downward under the elastic force of the spring 1109, driving the transmission column 1103 and transmission plate 1104 to move downward synchronously. The downward movement of the transmission plate 1104 causes the trigger rod 1105 to slide downward along the limiting groove on the limiting column 1106. When the trigger rod 1105 slides to contact the water pump trigger switch 1107, the water pump trigger switch 1107 is triggered, the water pump 8 starts, and begins to draw water from the inlet valve 801, and replenishes water to the system through the branch pipe 701 and the parallel pipe 7. As the water pump 8 replenishes water, the system pressure gradually recovers. When the system pressure recovers to the set value, the spring base 1101 moves upward under the elastic force of the spring 1109, driving the transmission column 1103 and transmission plate 1104 to move upward, the trigger rod 1105 slides upward and disengages from the water pump trigger switch 1107, and the water pump 8 stops working. Through the above process, the pressure regulating device can automatically adjust the system pressure to ensure that the system pressure is stable within the set range. At the same time, the sealing ring 1102 ensures the seal between the spring base 1101 and the inner wall of the water tank 9, preventing water leakage.

[0030] Example 2

[0031] like Figures 1-5As shown, this illustrates a constant-pressure water replenishment vacuum degassing device according to another embodiment of this disclosure. Its technical solution is largely the same as that of Embodiment 1, so only the differences are described in detail. These differences include: a pressure regulating device 12 is provided at the top of the water tank 9. The pressure regulating device 12 includes a protective shell 1201. The bottom of the protective shell 1201 is fixedly connected to one end of the positioning column 1108 penetrating the transmission plate 1104. An electric telescopic rod 1202 is fixedly connected to the top of the inner wall of the protective shell 1201. A spring pressure plate 1203 is fixedly connected to the telescopic end of the electric telescopic rod 1202. The telescopic end of the electric telescopic rod 1202 is slidably connected to the inner wall side of the transmission column 1103. The inner wall side of the spring pressure plate 1203 is slidably connected to the side of the transmission column 1103. The bottom of the spring pressure plate 1203 is fixedly connected to one end of the spring 1109. A pressure plate limiting groove 1204 is provided on the side of the transmission column 1103. This design can effectively regulate the pressure inside the water tank 9, ensuring stable system pressure. The electric telescopic rod 1202 can automatically adjust the position of the spring pressure plate 1203 according to changes in system pressure, thereby precisely controlling the compression degree of the spring 1109 and achieving fine adjustment of system pressure. At the same time, the pressure plate limiting groove 1204 limits the displacement range of the spring pressure plate 1203, preventing excessive movement that could damage the device and ensuring reliable operation of the device.

[0032] In some examples, the protective housing 1201 is provided with several heat dissipation holes arranged circumferentially on its surface. This design effectively dissipates the heat generated by the electric telescopic rod 1202 during operation, helping to extend its service life and significantly improving the overall heat dissipation performance of the pressure regulating device 12. A sealing gasket is provided between the bottom of the protective housing 1201 and one end of the positioning post 1108 that penetrates the transmission plate 1104. The sealing gasket is made of corrosion-resistant rubber. This configuration effectively prevents moisture and dust from entering the pressure regulating device 12 from the connection point, thus ensuring its normal operation. The bottom of the pressure plate limiting groove 1204 is located at the top of the minimum displacement diameter of the spring 1109, and the diameter of the pressure plate limiting groove 1204 is smaller than the maximum displacement diameter of the spring 1109. This design ensures that the spring 1109 remains stable during compression and extension, preventing excessive displacement of the spring pressure plate 1203 that could damage the device, thereby improving the reliability and safety of the device. The diameter of the spring pressure plate 1203 is larger than the diameter of the spring 1109, and the spring pressure plate 1203 is provided with spring maintenance holes. Through these maintenance holes, the spring 1109 can be easily maintained and inspected, thereby improving the maintenance convenience of the device.

[0033] For example, as shown in the figure, when it is necessary to increase the system pressure, a signal is sent through the control cabinet 10 to retract the electric telescopic rod 1202. The telescopic end of the electric telescopic rod 1202 drives the spring pressure plate 1203 to slide upward along the transmission column 1103, further compressing the spring 1109. The increased compression force of the spring 1109 is transmitted to the spring base 1101 through the transmission column 1103, thereby increasing the system pressure. When it is necessary to reduce the system pressure, a signal is sent through the control panel to extend the electric telescopic rod 1202. The telescopic end of the electric telescopic rod 1202 pushes the spring pressure plate 1203 to slide downward along the transmission column 1103, reducing the degree of compression on the spring 1109. The reduced elastic force of the spring 1109 is transmitted to the spring base 1101 through the transmission column 1103, thereby reducing the system pressure.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A constant pressure water replenishment vacuum degassing device, characterized in that, The system includes a mounting base (1), an expansion tank (2) fixedly connected to the top of the mounting base (1), an expansion tank installation port (201) fixedly connected to the bottom of the expansion tank (2), a main pipe (3) bolted to the bottom of the expansion tank installation port (201), an outlet pipe (4) fixedly connected to the circumferential surface of the main pipe (3), an inlet pipe (5) fixedly connected to the circumferential surface of the main pipe (3), a degassing tank (6) fixedly connected to the top of the mounting base (1), a degassing valve (601) fixedly connected to one side of the degassing tank (6), and one end of the inlet pipe (5) bolted to one end of the degassing valve (601). The degassing tank (6) is located at a distance from the top of the mounting base (1). A parallel pipeline (7) is bolted to one side of the degassing valve. A branch pipeline (701) is fixedly connected to the circumferential surface of the parallel pipeline (7). A water pump (8) is fixedly installed on the top of the mounting base (1). One end of the branch pipeline (701) is bolted to one side of the water pump (8). The other end of the water pump (8) is fixedly connected to the inlet valve (801). A water tank (9) is fixedly connected to the top of the mounting base. One end of the parallel pipeline (7) is fixedly connected to the circumferential surface of the water tank (9). A control cabinet (10) is installed on the top of the mounting base (1). A pressure regulating device (12) and a pressure regulating device (11) are provided on the top of the water tank (9). The pressure regulating device (11) includes a spring base (1101), the circumferential surface of which is slidably connected to the inner wall of the water tank (9), a spring (1109) is fixedly connected to the top of the spring base (1101), a sealing ring (1102) is fixedly connected to the circumferential surface of the spring base (1101), a transmission column (1103) is fixedly connected to the top of the spring base (1101), a transmission plate (1104) is fixedly connected to one end of the transmission column (1103), a positioning column (1108) is fixedly connected to the top of the water tank (9), one end of the positioning column (1108) passes through the top of the transmission plate (1104), a trigger rod (1105) is fixedly connected to the end of the transmission plate (1104) away from the water tank (9), a limit column (1106) is fixedly connected to the top of the water pump (8), and a water pump trigger switch (1107) is fixedly connected to the top of the limit column (1106).

2. The constant pressure water makeup vacuum deaeration device of claim 1, wherein, The top of the limiting post (1106) has a limiting groove, which is located on the displacement trajectory of the trigger rod (1105), and the water pump trigger switch (1107) is located on the displacement trajectory of the trigger rod (1105).

3. The constant pressure water makeup vacuum deaeration device of claim 2, wherein, The end of the transmission column (1103) located on the transmission plate (1104) is higher than the top of the water pump (8), and the diameter of the higher part is equal to the depth of the limiting groove opened at the top of the limiting column (1106).

4. The constant pressure water makeup vacuum deaeration device of claim 3, wherein, Three positioning posts (1108) are provided and are arranged in a circumferential array on the top of the water tank (9).

5. The constant pressure water makeup vacuum deaeration device of claim 4, wherein, The positioning post (1108) and the transmission plate (1104) are slidably connected through the part, and the diameter of the cylindrical protrusion at the bottom of the transmission plate (1104) is the same as the diameter of the concave part at the top of the water tank (9).

6. The constant pressure water makeup vacuum deaeration device of claim 5, wherein, The water tank (9) is provided with a pressure regulating device (12) at the top. The pressure regulating device (12) includes a protective shell (1201). The bottom of the protective shell (1201) is fixedly connected to one end of the positioning column (1108) that passes through the transmission plate (1104). An electric telescopic rod (1202) is fixedly connected to the top of the inner wall of the protective shell (1201). A spring pressure plate (1203) is fixedly connected to the telescopic end of the electric telescopic rod (1202). The telescopic end of the electric telescopic rod (1202) is slidably connected to the inner side of the transmission column (1103). The side of the transmission column (1103) passes through and is slidably connected to the side of the spring pressure plate (1203). The bottom of the spring pressure plate (1203) is fixedly connected to one end of the spring (1109) away from the spring base (1101). A pressure plate limiting groove (1204) is opened on the side of the transmission column (1103).

7. The constant pressure water makeup vacuum deaeration device of claim 6, wherein, The protective shell (1201) has a number of heat dissipation holes, which are arranged in a circumferential array on the circumferential surface of the protective shell (1201).

8. The constant pressure water makeup vacuum deaeration device of claim 7, wherein, A sealing gasket is provided between the bottom of the protective shell (1201) and the positioning post (1108), and the diameter of the sealing gasket is equal to the bottom diameter of the protective shell (1201).

9. A constant pressure water replenishment vacuum degassing device according to claim 8, characterized in that, The bottom of the pressure plate limiting groove (1204) is located at the top of the minimum displacement diameter of the spring (1109), and the diameter of the pressure plate limiting groove (1204) is smaller than the maximum displacement diameter of the spring (1109).

10. The constant pressure water makeup vacuum deaeration device of claim 9, wherein, The diameter of the spring pressure plate (1203) is larger than the diameter of the spring (1109), and the spring pressure plate (1203) is provided with a spring care hole.

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