Automatic cooling device for cooling anode tube

Abstract

The invention discloses an automatic cooling device for cooling an anode tube, and relates to the technical field of electrostatic dust collection. The precision problem is solved. The system specifically comprises a sensor module, a spraying cooling part and a central control module, the sensor module comprises a plurality of temperature sensors, the plurality of temperature sensors are uniformly fixed in the horn-shaped inlet of the anode tube, and the spray cooling part is mounted above the anode tube. A plurality of temperature sensors are arranged, then the mean value of multiple square roots is used as effective data, so that the availability and accuracy of data are improved, deviation is reduced, in addition, automatic start and stop are achieved through temperature-based control logic of the central control module, automatic start and stop of the spraying and flushing system can be achieved without personnel on duty, and the system is convenient to use. The intelligence and automation of the device are improved, the utilization rate of a spray cooling system is improved, the safety and reliability of the anode tube module assembly are enhanced, and the service life of the electrostatic dust collector is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of electrostatic dust removal, and in particular to an automatic cooling device for cooling an anode tube. Background Art

[0002] The working principle of the wet electrostatic precipitator is that when the flue gas passes through the electric field area where cathode wires are arranged, the cathode wires apply high voltage to generate corona discharge, which charges the dust particles in the flue gas. Under the action of the electric field force, the charged dust particles move toward the anode tube with opposite polarity and deposit on the inner wall. The acid mist attached to the inner wall of the anode tube is then washed down through the spray system.

[0003] The wet electrostatic precipitator is mainly composed of a honeycomb anode module group, a cathode system, a high-voltage discharge device, etc. During the deep dust removal process of flue gas, the high-temperature flue gas will have a very adverse effect on the anode module components of the wet electrostatic precipitator.

[0004] After searching, the Chinese patent publication number CN118649781B discloses a high-efficiency and energy-saving honeycomb wet electrostatic precipitator, which uses a sensor to obtain the inlet smoke temperature and then controls the timing of spray cooling by setting a temperature threshold.

[0005] The above patent has the following deficiencies: due to the accuracy error of the sensor and the high temperature smoke and dust in the working environment of the sensor, abnormal data collection may occur, resulting in false triggering of the spray cooling and reduced control accuracy. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an automatic cooling device for cooling an anode tube.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: An automatic cooling device for cooling an anode tube, comprising a sensor module, a spray cooling unit and a central control module; The sensor module includes a plurality of temperature sensors, which are evenly fixed inside the horn inlet of the anode tube, and the spray cooling part is installed above the anode tube; The working logic of the automatic cooling device includes the following steps: S1: Set the temperature threshold range (T1, T2); S2: The sensor module collects temperature information in real time and calculates the temperature according to the formula {t}_{0}=\frac {\sqrt[{k}] {{t}^{k}_{1}+{t}^{k}_{2}+......{t}^{k}_{n}}} {n} The data collected by the sensors are integrated to obtain the temperature data t0, where t is the temperature data collected by each sensor in real time, n represents the number of temperature sensors, and k is the square root coefficient; S3: The sensor module collects and integrates the temperature data and transmits it to the central control module. If the temperature data is greater than T2, the spray cooling unit is controlled to start cooling until the cooling temperature reaches T1.

[0008] Preferably: the spray cooling part includes a water distribution rack fixed to the inner wall of the electrostatic precipitator and located above the anode tube, and a plurality of spray head mechanisms connected to the bottom of the water distribution rack in a rectangular array. The water inlet of the water distribution rack is connected to a filter through pipe 1, and the other side of the filter is connected to a water pump through pipe 2, and the water inlet of the water pump is connected to a water tank.

[0009] Furthermore, the spray head mechanism includes a conical sleeve and a spray head assembly, and the spray head assembly is connected to the bottom of the conical sleeve through a flange.

[0010] On the basis of the above-mentioned scheme: the conical sleeve is fixed at the water outlet of the water distribution frame, and the inner wall of the conical sleeve is provided with a conical plug that can contact and seal with the inner wall of the conical part of the conical sleeve. The top of the conical plug is buckled with spring 1, and the other end of spring 1 is buckled with the bottom outer wall of the water distribution frame. The inner side wall of the flange is fixed with a top rod for limiting the conical plug.

[0011] A better solution among the above solutions is that the sprinkler head mechanism is connected to the water distribution frame through a pressure flow control valve.

[0012] As a further solution of the present invention: the pressure flow control valve includes a valve housing fixed between the sprinkler head mechanism and the water distribution frame and connected to the ball core through a valve stem rotation, and a negative feedback control component for controlling the valve stem rotation is provided on one side of the valve housing.

[0013] At the same time, the negative feedback control component includes a shell fixed to one side of the valve housing and a piston slidably connected to the inner wall of the shell. A sleeve is fixed to the outer wall of one side of the piston, and the sleeve is movably sleeved on the outer wall of the valve stem. The other side of the piston is buckled with spring 2, and the other end of spring 2 is buckled to the inner wall of the shell.

[0014] As a preferred embodiment of the present invention: a pressure-sensing tube is fixed to one end of the housing, and the other end of the pressure-sensing tube is connected to the water outlet side of the valve housing; The outer wall of the valve stem is provided with a spiral groove, and the inner wall of the sleeve is fixed with a limiting protrusion which is movably limited and matched with the spiral groove.

[0015] At the same time, the spray head assembly includes a slide plate, a spray shell and a fixed plate. The spray shell is fixedly connected to the bottom inner wall of the flange through a stepped ring. The fixed plate is fixed to the inner wall of the spray shell. The slide plate is slidably connected to the inner wall of the spray shell. The inner walls of the slide plate and the fixed plate are both provided with leakage holes, and the two groups of leakage holes are staggered with each other.

[0016] As a better solution of the present invention: an elastic column is fixed to the upper surface of the bottom of the spray shell, the other end of the elastic column contacts and cooperates with the bottom of the slide, and a plurality of ejector pins that cooperate with the leakage holes on the slide are fixed to the bottom of the fixing plate.

[0017] The beneficial effects of the present invention are: The present invention provides multiple temperature sensors and uses the mean of multiple square roots as valid data, thereby improving data availability and accuracy and reducing deviations. In addition, the temperature control logic of the central control module is used to realize automatic start and stop, and the automatic start and stop of the spray flushing system can be realized without the need for human supervision, thereby improving the intelligence and automation of the device, increasing the utilization rate of the spray cooling system, enhancing the safety and reliability of the anode tube module assembly, and helping to extend the service life of the electrostatic precipitator.

[0018] By setting the sprinkler head mechanism as a detachable structure of the conical sleeve and the sprinkler head assembly, it is easy to repair and replace a single sprinkler head assembly when it fails. In addition, by setting a push rod, a conical plug, a spring and other structures, the water flow path can be automatically opened when the sprinkler head assembly is installed, and the conical sleeve can be automatically closed when the sprinkler head assembly is disassembled, thereby increasing the convenience of use.

[0019] Through targeted design of the sprinkler head assembly, it is designed as a combination of a spray shell, a slide plate, and a fixed plate, so that the entire sprinkler head assembly can have a reverse sealing effect, preventing smoke and dust from being sucked back into the interior of the device, thereby increasing reliability. In addition, when closing, the leak holes of the slide plate can be dredged through the top pin to prevent the leak holes on the outside from being blocked by smoke and dust.

[0020] By setting up a pressure control flow valve and utilizing a negative feedback control component, the rotation angle of the ball core can be controlled, thereby controlling the opening of the pressure control flow valve. This allows the water outlet speed of sprinkler head mechanisms at different positions to be controlled by utilizing the opening control of the pressure control flow valve, thereby ensuring that the water outlet speeds of each sprinkler head mechanism are substantially the same, thereby ensuring uniformity in the cooling of the anode tube.

[0021] By setting up a negative feedback control component, utilizing the positive linear relationship between flow rate and water pressure, and combining it with the coordination of the valve stem and sleeve, it is possible to adjust the opening of the ball core according to the negative feedback of the water pressure on the water outlet side, ensuring that the water outlet speed of each sprinkler head mechanism is the same and the cooling uniformity is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1Schematic diagram of the present invention.

[0023] Figure 2 It is a schematic structural diagram of the spray cooling part of the present invention.

[0024] Figure 3 This is a schematic diagram of the structure of the sprinkler head of the present invention.

[0025] Figure 4 Schematic diagram of the structure of the shower head assembly of the present invention.

[0026] Figure 5 This is a schematic diagram of the installation structure of the sprinkler head mechanism in Example 3 of the present invention.

[0027] Figure 6 Schematic diagram of the internal structure of the pressure control valve of the present invention.

[0028] Figure 7 This is a schematic diagram of the cross-sectional structure of the valve stem and sleeve of the present invention.

[0029] In the figure: 1. water distribution frame; 2. sprinkler head mechanism; 3. pipe 1; 4. filter; 5. pipe 2; 6. water pump; 7. water tank; 8. tapered sleeve; 9. ejector pin; 10. sprinkler head assembly; 11. flange; 12. tapered plug; 13. spring 1; 14. step ring; 15. leak hole; 16. slide plate; 17. elastic column; 18. spray shell; 19. fixing plate; 20. pressure control valve; 21. valve shell; 22. ball core; 23. valve stem; 24. sleeve; 25. piston; 26. spring 2; 27. shell; 28. pressure sensing tube; 29. ​​spiral groove; 30. limit protrusion; 31. ejector pin. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] Example 1: An automatic cooling device for cooling anode tubes, such as Figure 1 As shown, it includes a sensor module, a spray cooling unit and a central control module. The sensor module includes multiple temperature sensors, which are evenly fixed inside the inlet of the anode tube horn. The spray cooling unit is installed above the anode tube. In this embodiment, there is no limitation on the installation position of the central control module. It can be installed in the outer shell of the electrostatic precipitator or other convenient and safe place. The working logic of the automatic cooling device includes the following steps: S1: Set the temperature threshold interval T1, T2; S2: The sensor module collects temperature information in real time and calculates the temperature according to the formula {t}_{0}=\frac {\sqrt[{k}] {{t}^{k}_{1}+{t}^{k}_{2}+......{t}^{k}_{n}}} {n} The data collected by the sensors are integrated to obtain the temperature data t0, where t is the temperature data collected by each sensor in real time, n represents the number of temperature sensors, and k is the square root coefficient; S3: The sensor module collects and integrates the temperature data and transmits it to the central control module. If the temperature data is greater than T2, the spray cooling unit is controlled to start cooling until the cooling temperature reaches T1.

[0033] In this embodiment, there is no limitation on the specific values ​​of n and k, which can be determined based on the balance between actual accuracy and cost. Preferably, n=3 and k=2.

[0034] The present invention provides multiple temperature sensors and uses the mean of multiple square roots as valid data, thereby improving the availability and accuracy of data and reducing deviations. In addition, the temperature control logic of the central control module is used to realize automatic start and stop, and the automatic start and stop of the spray flushing system can be realized without the need for human supervision, thereby improving the intelligence and automation of the device, improving the utilization rate of the spray cooling system, enhancing the safety and reliability of the anode tube module assembly, and being conducive to extending the service life of the electrostatic precipitator.

[0035] Example 2: An automatic cooling device for cooling anode tubes, such as Figure 2-Figure 7 As shown, in order to solve the cooling problem, this embodiment makes the following improvements on the basis of Example 1: the spray cooling part includes a water distribution frame 1 fixed to the inner wall of the electrostatic precipitator and located above the anode tube, and a plurality of spray head mechanisms 2 connected to the bottom of the water distribution frame 1 in a rectangular array. The water inlet of the water distribution frame 1 is connected to a filter 4 through a pipe 1 3, and the other side of the filter 4 is connected to a water pump 6 through a pipe 2 5. The water inlet of the water pump 6 is connected to a water tank 7.

[0036] The central control module will control the water pump 6 to start, and the water pump 6 will pump out the water in the water tank 7, and then transport it to the filter 4 through the pipe 2 5. After being filtered, the water source enters the water distribution rack 1 through the water distribution rack 1 and is diverted. Then it is sprayed out through multiple sprinkler head mechanisms 2. The water source falls to the anode tube under gravity for cooling.

[0037] The spray head mechanism 2 includes a conical sleeve 8 and a spray head assembly 10 . The spray head assembly 10 is connected to the bottom of the conical sleeve 8 via a flange 11 .

[0038] The conical sleeve 8 is fixed at the water outlet of the water distribution frame 1. The inner wall of the conical sleeve 8 is provided with a conical plug 12 which can contact and seal with the inner wall of the conical part of the conical sleeve 8. The top of the conical plug 12 is buckled with a spring 13, and the other end of the spring 13 is buckled with the bottom outer wall of the water distribution frame 1. The inner side wall of the flange 11 is fixed with a push rod 9 for limiting the conical plug 12.

[0039] When the sprinkler head assembly 10 is installed on the bottom of the conical sleeve 8 through the flange 11, the push rod 9 will push the conical plug 12 upward, so that the conical plug 12 does not fit the conical inner wall of the conical sleeve 8. After the water source enters the conical sleeve 8, it will flow into the sprinkler head assembly 10 along the gap between the conical plug 12 and the conical sleeve 8 for spraying. When the sprinkler head assembly 10 and the conical sleeve 8 are disassembled, the conical plug 12 is lowered by the elastic force of the spring 13 to fit the conical inner wall of the conical sleeve 8 to achieve sealing.

[0040] The device, by configuring the sprinkler head mechanism 2 to comprise a detachable structure of the conical sleeve 8 and the sprinkler head assembly 10, can facilitate repair and replacement of a single sprinkler head assembly 10 when it fails, and by configuring structures such as the ejector rod 9, the conical plug 12, and the spring 13, can automatically open the water path when the sprinkler head assembly 10 is installed, and automatically close the conical sleeve 8 when the sprinkler head assembly 10 is removed, thereby increasing convenience in use.

[0041] The shower head assembly 10 includes a slide 16, a spray shell 18 and a fixed plate 19. The spray shell 18 is fixedly connected to the bottom inner wall of the flange 11 through a stepped ring 14. The fixed plate 19 is fixed to the inner wall of the spray shell 18. The slide 16 is slidably connected to the inner wall of the spray shell 18. The inner walls of the slide 16 and the fixed plate 19 are both provided with leakage holes 15, and the two groups of leakage holes 15 are offset from each other.

[0042] An elastic column 17 is fixed to the bottom upper surface of the spray shell 18 , and the other end of the elastic column 17 contacts and fits in the bottom of the slide 16 . A plurality of ejector pins 31 that fit in the leakage holes 15 on the slide 16 are fixed to the bottom of the fixing plate 19 .

[0043] When not in the spraying state, the elastic column 17 will bounce the slide 16 upward, so that the slide 16 fits against the fixed plate 19, and the ejector pin 31 is inserted into the leakage hole 15 of the slide 16. When in the spraying state, the water pressure and water flow resistance will push the slide 16 downward, and the water flows out through the leakage hole 15 to spray.

[0044] The device specifically designs the sprinkler head assembly 10 as a combination of a sprinkler shell 18, a slide plate 16, and a fixing plate 19, so that the entire sprinkler head assembly 10 has a reverse sealing effect, preventing smoke and dust from being sucked back into the interior of the device, thereby increasing reliability. In addition, when closing, the leakage hole 15 of the slide plate 16 can be cleared through the ejector pin 31 to prevent the leakage hole 15 located on the outside from being blocked by smoke and dust.

[0045] When the present embodiment is in use, the central control module controls the water pump 6 to start, the water pump 6 draws out the water in the water tank 7, and then delivers it to the filter 4 through the pipe 2 5. After being filtered, the water source enters the water distribution frame 1 through the water distribution frame 1 for diversion, and then is sprayed out through multiple spray head mechanisms 2. The water source falls to the anode tube by gravity for cooling. At the same time, when the spray head assembly 10 is installed at the bottom of the conical sleeve 8 through the flange 11, the push rod 9 will push the conical plug 12 upward, so that the conical plug 12 does not fit the conical inner wall of the conical sleeve 8. After the water source enters the conical sleeve 8, it will flow along the conical sleeve 8. The water flows into the spray head assembly 10 through the gap between the tapered plug 12 and the tapered sleeve 8 and is sprayed. When the spray head assembly 10 and the tapered sleeve 8 are disassembled, the tapered plug 12 is lowered by the elastic force of the spring 13 to fit the tapered inner wall of the tapered sleeve 8 to achieve sealing. In addition, when not in the spraying state, the elastic column 17 will bounce the slide plate 16 upward, so that the slide plate 16 fits the fixed plate 19, and the ejector pin 31 is inserted into the leakage hole 15 of the slide plate 16. When in the spraying state, the water pressure and the water flow resistance will push the slide plate 16 downward, and the water flows out through the leakage hole 15 for spraying.

[0046] An automatic cooling device for cooling anode tubes, such as Figure 2-Figure 7 As shown, in order to solve the problem of spraying uniformity, the spray head mechanism 2 is connected to the water distribution frame 1 through a pressure control valve 20.

[0047] The pressure control valve 20 includes a valve housing 21 fixed between the sprinkler head mechanism 2 and the water distribution frame 1 and rotatably connected to the ball core 22 via a valve stem 23 , and a negative feedback control component for controlling the rotation of the valve stem 23 is provided on one side of the valve housing 21 .

[0048] Since the water flow path lengths and directions of the sprinkler head mechanisms 2 located at different positions of the water inlet of the water distribution rack 1 are different during spraying, the pressure drops of the water source entering the water distribution rack 1 and spraying out of different sprinkler head mechanisms 2 are different, which leads to different spray flow rates of different sprinkler head mechanisms 2, resulting in different cooling effects of different anode tubes.

[0049] This device, by providing a pressure control valve 20, utilizes a negative feedback control component to control the rotation angle of the ball core 22, thereby controlling the opening of the pressure control valve 20. This allows the opening of the pressure control valve 20 to be controlled to control the water outlet speed for the sprinkler head mechanisms 2 at different positions, thereby ensuring that the water outlet speeds of each sprinkler head mechanism 2 are substantially the same, thereby ensuring uniform cooling of the anode tube.

[0050] The negative feedback control component includes a shell 27 fixed to one side of the valve housing 21 and a piston 25 slidably connected to the inner wall of the shell 27. A sleeve 24 is fixed to the outer wall of one side of the piston 25, and the sleeve 24 is movably sleeved on the outer wall of the valve stem 23. A spring 26 is buckled on the other side of the piston 25, and the other end of the spring 26 is buckled to the inner wall of the shell 27.

[0051] A pressure-sensing tube 28 is fixed to one end of the housing 27 , and the other end of the pressure-sensing tube 28 is connected to the water outlet side of the valve housing 21 .

[0052] A spiral groove 29 is formed on the outer wall of the valve stem 23 , and a limiting protrusion 30 that is movably limited and engaged with the spiral groove 29 is fixed on the inner wall of the sleeve 24 .

[0053] When the water pressure on the outlet side of the valve housing 21 is small and the flow rate is slow, the pressure in the pressure-sensing tube 28 is also small, so that the pressure on the piston 25 is small, and the balance position of the force between the piston 25 and the spring 26 changes, so that the piston 25 slides relative to the housing 27, and the sleeve 24 and the valve stem 23 move relative to each other. The spiral groove 29 and the limiting protrusion 30 drive the valve stem 23 to rotate, causing the ball core 22 to rotate, increasing the opening and the flow rate, and vice versa.

[0054] This device, by setting a negative feedback control component, utilizes the positive linear relationship between flow rate and water pressure, and combines the cooperation of the valve stem 23 and the sleeve 24, so as to adjust the opening of the ball core 22 according to the negative feedback of the water pressure on the water outlet side, thereby ensuring that the water outlet speed of each sprinkler head mechanism 2 is the same and the cooling uniformity is guaranteed.

[0055] In this embodiment: since the water flow path lengths and directions of the sprinkler head mechanisms 2 located at different positions of the water inlet of the water distribution frame 1 are different during spraying, the pressure drops of the water source entering the water distribution frame 1 and spraying out of different sprinkler head mechanisms 2 are different, which results in different spray flow rates of different sprinkler head mechanisms 2, resulting in different cooling effects of different anode tubes. When the water pressure on the outlet side of the valve housing 21 is small and the flow rate is slow, the pressure in the pressure sensing tube 28 is also small, so that the pressure on the piston 25 is small, and the force balance position of the piston 25 and the spring 26 changes, so that the piston 25 slides relative to the housing 27, and the sleeve 24 and the valve stem 23 move relative to each other. The valve stem 23 is driven to rotate by the action of the spiral groove 29 and the limiting protrusion 30, so that the ball core 22 rotates, increasing the opening and the flow rate, and vice versa, reducing the flow rate.

[0056] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An automatic cooling device for cooling anode tubes, comprising a sensor module, a spray cooling unit and a central control module, characterized in that: The sensor module includes a plurality of temperature sensors, which are evenly fixed inside the horn inlet of the anode tube, and the spray cooling part is installed above the anode tube; The working logic of the automatic cooling device includes the following steps: S1: Set the temperature threshold range (T1, T2); S2: The sensor module collects temperature information in real time; S3: The sensor module collects and integrates the temperature data and transmits it to the central control module. If the temperature data is greater than T2, the spray cooling unit is controlled to start cooling until the cooling temperature reaches T1.

2. The automatic cooling device for cooling anode tubes according to claim 1, characterized in that: The spray cooling part comprises a water distribution frame (1) fixed to the inner wall of the electrostatic precipitator and located above the anode tube, and a plurality of spray head mechanisms (2) connected to the bottom of the water distribution frame (1) in a rectangular array. The water inlet of the water distribution frame (1) is connected to a filter (4) through a pipe (3). The other side of the filter (4) is connected to a water pump (6) through a pipe (5). The water inlet of the water pump (6) is connected to a water tank (7).

3. The automatic cooling device for cooling anode tubes according to claim 2, characterized in that: The spray head mechanism (2) comprises a conical sleeve (8) and a spray head assembly (10), wherein the spray head assembly (10) is connected to the bottom of the conical sleeve (8) via a flange (11).

4. The automatic cooling device for cooling anode tubes according to claim 3, characterized in that: The conical sleeve (8) is fixed at the water outlet of the water distribution frame (1), and the inner wall of the conical sleeve (8) is provided with a conical plug (12) that can contact and seal with the inner wall of the conical portion of the conical sleeve (8). The top of the conical plug (12) is buckled with a spring (13), and the other end of the spring (13) is buckled with the bottom outer wall of the water distribution frame (1). The inner side wall of the flange (11) is fixed with a top rod (9) for limiting the conical plug (12).

5. The automatic cooling device for cooling anode tubes according to claim 2, characterized in that: The spray head mechanism (2) is connected to the water distribution frame (1) via a pressure flow control valve (20).

6. The automatic cooling device for cooling anode tubes according to claim 5, characterized in that: The pressure flow control valve (20) comprises a valve housing (21) fixed between the sprinkler head mechanism (2) and the water distribution frame (1) and rotatably connected to the ball core (22) via a valve stem (23), and a negative feedback control component for controlling the rotation of the valve stem (23) is provided on one side of the valve housing (21).

7. The automatic cooling device for cooling anode tubes according to claim 6, characterized in that: The negative feedback control assembly includes a housing (27) fixed to one side of the valve housing (21) and a piston (25) slidably connected to the inner wall of the housing (27), a sleeve (24) is fixed to the outer wall of one side of the piston (25), and the sleeve (24) is movably sleeved on the outer wall of the valve stem (23), and a spring (26) is buckled on the other side of the piston (25), and the other end of the spring (26) is buckled to the inner wall of the housing (27).

8. The automatic cooling device for cooling anode tubes according to claim 7, characterized in that: A pressure-sensing tube (28) is fixed to the end of the housing (27), and the other end of the pressure-sensing tube (28) is connected to the water outlet side of the valve housing (21); The outer wall of the valve stem (23) is provided with a spiral groove (29), and the inner wall of the sleeve (24) is fixed with a limiting protrusion (30) that movably limits the spiral groove (29).

9. The automatic cooling device for cooling anode tubes according to claim 4, characterized in that: The spray head assembly (10) includes a slide plate (16), a spray shell (18) and a fixed plate (19), wherein the spray shell (18) is fixedly connected to the bottom inner wall of the flange (11) through a stepped ring (14), and the fixed plate (19) is fixed to the inner wall of the spray shell (18). The slide plate (16) is slidably connected to the inner wall of the spray shell (18), and the inner walls of the slide plate (16) and the fixed plate (19) are both provided with leakage holes (15), and the two groups of leakage holes (15) are offset from each other.

10. The automatic cooling device for cooling anode tubes according to claim 9, characterized in that: An elastic column (17) is fixed to the upper surface of the bottom of the spray shell (18), and the other end of the elastic column (17) contacts and fits with the bottom of the slide plate (16). A plurality of ejector pins (31) that fit with the leakage holes (15) on the slide plate (16) are fixed to the bottom of the fixing plate (19).

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