Air extractor of heating network heater

Abstract

A heat supply network heater air extractor belongs to the technical field of heaters and comprises a heater system, an air extraction pipe body, a through hole, a communicating pipe and an air extractor body, the air extraction pipe body is arranged in an inner cavity of the heater system in the horizontal direction, and the air extraction pipe body is arranged to be a hollow tubular body; the through holes are formed in the air suction pipe body at equal intervals in the circumferential direction, and the distances between every two adjacent through holes formed in the horizontal direction are the same. One end of the communicating pipe is communicated with the exhaust pipe body, and the other end of the communicating pipe extends out of the heater system; and the air extractor is communicated with the other end of the communicating pipe. In the aspect of air exhaust, the air exhaust pipe body is arranged on the upper portion of the center line of the heater and corresponds to the steam cooling area, air can be accurately and efficiently exhausted, normal condensation of steam is guaranteed, and the condensation heat exchange coefficient and the overall heat exchange effect are improved; and the air exhaust pipe body is positioned in a range of 300-500mm above the center line of the shell, so that the interference of the water level on air exhaust is effectively avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of heaters, and particularly relates to an air extraction device for a heat network heater. Background Art

[0002] A heat network heater is a heat exchange device used in a central heating system. It uses heat sources such as steam to heat circulating water, transfers heat energy to the water in the heat network to increase the supply water temperature, and meets the heating needs of users. It has the characteristics of high heat exchange efficiency and stable operation. As a common type of heater, in a shell-and-tube heater, the working medium in the shell side is the extraction steam of a certain cylinder of a steam turbine, and the working medium in the tube side is the feed water of the heat network. The high-temperature steam in the shell side exchanges heat with the feed water of the heat network. The high-temperature steam releases heat and becomes condensate water, which is discharged to the condenser of the operating unit by a drain pump. After the heat network circulating water is heated, it is transported to heat network users.

[0003] In related technologies (a Chinese utility model patent with the publication number CN201548101U), a heat network heater is disclosed, which includes a steam inlet, heat exchange tubes, and baffle plates. Among them, the heat exchange tubes are jacketed corrugated tubes, a straight-section seamless sleeve is added at the baffle plate position, and an arc-shaped anti-impingement plate is provided at the steam inlet. It is designed for the working conditions of heaters in large power plants, where superheated steam with a temperature of over 300 degrees and a gas flow rate of 80 m / s is used to heat water at a temperature of 70 degrees. It can not only ensure an increase in the heat transfer coefficient to solve the problem of large temperature difference stress, but also solve the problems of high flow rate, anti-impingement and detachment, and insufficient support strength. It operates safely, has a low cost, and is suitable for use in the first-stage heat network.

[0004] In the current application scenarios of heaters, to ensure their efficient operation, an air extraction device is usually used in combination to exhaust the inner cavity of the heater in a timely manner. However, the air extraction port of the traditional air extraction device is connected to the top part of the inner cavity of the heater. Since the density of air is greater than that of steam, during the air extraction process at this position, most of the extracted gas is steam, that is, it is difficult for the traditional air extraction port position to effectively extract air. Over time, air will remain in the inner cavity of the heater for a long time, interfering with the normal condensation process of steam as a non-condensable gas. The steam condensation process is blocked, the heat transfer coefficient is reduced, and ultimately the overall heat exchange efficiency of the heater is significantly decreased. Summary of the Invention

[0005] In view of the problem that in the existing technology, the position of the air extraction port of the traditional air extraction device is difficult to effectively extract the air in the inner cavity of the heater. Over time, the air will stay in the inner cavity of the heater for a long time, interfering with the normal condensation process of the steam as non-condensable gas, resulting in the obstruction of the steam condensation process and the reduction of the heat transfer coefficient. The present invention provides an air extraction device for a heat network heater. The air extraction pipe body is arranged at a position above the center line of the heater, corresponding to the steam cooling area of the heater, which can accurately and efficiently discharge the air in this area to the outside of the heater, effectively preventing the air from staying, preventing it from having an adverse impact on the steam condensation process as non-condensable gas, discharging the air in time, effectively ensuring the normal condensation of the steam and the release of the latent heat of vaporization, significantly accelerating the steam condensation rate, improving the condensation efficiency, and further increasing the condensation heat transfer coefficient, and ultimately greatly enhancing the overall heat transfer effect of the heater. The specific technical solution is as follows:

[0006] An air extraction device for a heat network heater, including a heater system, further including: an air extraction pipe body, through holes, a connecting pipe and an air extraction device. The air extraction pipe body is arranged horizontally in the inner cavity of the heater system, and the air extraction pipe body is arranged as a hollow tubular body; the through holes are circumferentially and equidistantly arranged on the air extraction pipe body, and the distance between two adjacent through holes arranged horizontally is the same; one end of the connecting pipe is communicated with the air extraction pipe body, and the other end of the connecting pipe extends out of the outside of the heater system; the air extraction device is communicated with the other end of the connecting pipe.

[0007] In the above technical solution, the air extraction pipe body is arranged within a range of 300 mm - 500 mm above the horizontal central axis of the heater system.

[0008] In the above technical solution, the heater system includes: a first head, a second head, a shell, a first tube sheet, a second tube sheet, an impact plate, a tube bundle and a support plate. The shell is arranged between the first head and the second head; the first tube sheet is arranged between the first head and the shell and is coaxially arranged with the first head. Two groups of hole positions are arranged in the lower half of the first tube sheet, and a plurality of holes are arranged in each group of hole positions in a rectangular array; the second tube sheet is arranged between the second head and the shell and is coaxially arranged with the second head. Two groups of hole positions are arranged in the lower half of the second tube sheet, and a plurality of holes are arranged in each group of hole positions in a rectangular array; the impact plate is fixedly installed on the inner wall of the shell; two groups of tube bundles are provided, and both ends of each group of tube bundles are respectively communicated with the hole positions at the first tube sheet and the second tube sheet; a plurality of support plates are provided, and the plurality of support plates are fixedly installed equidistantly in the inner cavity of the shell along the horizontal direction;

[0009] Among them, the impact plate is sleeved outside the two groups of tube bundles, and the tube bundles penetrate through the outer wall of the support plate along the horizontal direction.

[0010] In the above technical solution, the heater system further includes: a support base, a material inlet, a material outlet, a heat medium inlet, a heat medium outlet, and a pressure regulating port. There are two groups of support bases, and the two groups of support bases are respectively installed at the bottom end of the housing; the material inlet is arranged at the top end of the first head and is communicated with the inner cavity of the first head; the material outlet is arranged at the bottom end of the second head and is communicated with the inner cavity of the second head; the heat medium inlet is arranged at the bottom end of the housing and is communicated with the inner cavity of the housing for conveying heat medium into the housing; the heat medium outlet is arranged at the bottom end of the housing and is communicated with the inner cavity of the housing for discharging the heat medium in the housing; the pressure regulating port is arranged at the top end of the housing and is communicated with the inner cavity of the housing for regulating the pressure in the housing.

[0011] In the above technical solution, a drainage system is further included. The drainage system includes: an automatic drainage port and a water level warning component. The automatic drainage port is arranged at the bottom end of the housing and is communicated with the inner cavity of the housing; the water level warning component is arranged in the inner cavity of the housing.

[0012] In the above technical solution, the water level warning component includes: a support frame, an extension arm, a signal transmitter, a signal receiver, a foam board, a baffle, a guide rod, and a buzzer. The support frame is fixedly installed on the right side wall of the first tube sheet; the extension arm is fixedly installed on the side wall of the support frame; the signal transmitter is installed on the side wall of the support frame and corresponds to the side wall of the free end of the extension arm; the signal receiver is installed at the side wall of the free end of the extension arm, and the signal receiver corresponds to the signal transmitter; the foam board is arranged vertically in the support frame; the baffle is vertically and fixedly installed on the upper surface of the foam board, and the baffle can displace vertically between the signal transmitter and the signal receiver; there are two guide rods, and the two guide rods are both vertically installed in the inner cavity of the support frame, and the foam board is slidably sleeved on the guide rods; the buzzer is arranged on the first head.

[0013] In the above technical solution, the water level warning component further includes: a connecting rod, a first touch switch contact, and a second touch switch contact. The connecting rod is vertically and fixedly installed on the upper surface of the foam board, and the connecting rod is located on the left side of the baffle; the first touch switch contact is installed at the top end of the connecting rod; the second touch switch contact is installed on the side wall of the support frame, and the second touch switch contact is arranged corresponding to the first touch switch contact up and down.

[0014] In the above technical solution, the density of the foam board is less than the density of water.

[0015] In the above technical solution, the height of the connecting rod is higher than the height of the baffle.

[0016] In the above technical solution, the diameter of the communicating pipe is the same as the diameter of the air extraction pipe body.

[0017] Compared with the prior art, the beneficial effects of the air extraction device of the heat network heater of the present invention are as follows:

[0018] First, aiming at the problem that the air extraction port position of the traditional air extraction device is difficult to effectively extract the air in the inner cavity of the heater. Over time, the air will stay in the inner cavity of the heater for a long time, interfering with the normal condensation process of steam as non-condensable gas, resulting in the obstruction of the steam condensation process and the reduction of the heat transfer coefficient. In the present invention, the air extraction pipe body is arranged at a position above the center line of the heater, corresponding to the steam cooling area of the heater, which can accurately and efficiently discharge the air in this area to the outside of the heater, effectively preventing air from staying and preventing it from having an adverse impact on the steam condensation process as non-condensable gas. Timely discharging the air effectively ensures the normal condensation of steam and the release of vaporization heat, significantly accelerating the steam condensation rate, improving the condensation efficiency, and further increasing the condensation heat transfer coefficient, ultimately greatly enhancing the overall heat transfer effect of the heater.

[0019] Second, in the present invention, the air extraction pipe body is arranged within the range of 300 mm - 500 mm above the center line of the shell. On the premise of meeting the requirement of extracting the air in the shell, it can effectively avoid the interference of the water level in the shell on the normal air extraction operation of the air extraction pipe body, and can stably maintain the water level in the shell always below the air extraction pipe body, preventing the water from rising and entering the internal part of the air extraction pipe body, thus affecting the air extraction process.

[0020] Third, in the present invention, the through-hole components are arranged in groups at equal intervals along the length direction of the air extraction pipe body, and the coverage extends to the entire length range of the inner cavity of the shell. Compared with the traditional single-point air extraction mode, the present invention can perform air extraction operations on the air inside the shell at multiple positions simultaneously. The multi-point collaborative operation mode greatly improves the air extraction efficiency, making the process of discharging the air inside the shell more efficient and comprehensive.

[0021] Fourth, the water level of the condensed water in the traditional shell is not easy to observe, and too high water level is likely to affect the heat transfer efficiency. In the present invention, a warning and monitoring function for the water level in the shell is set, that is, through the setting of the foam board, baffle, signal transmitter, and signal receiver, it can prompt the buzzer to give a warning as the water level in the shell rises, to remind the staff that the water level in the shell is at a high level and timely countermeasures need to be taken to avoid the water level rising to the air extraction pipe body and affecting the air extraction.

[0022] V. The present invention is provided with a high-level automatic drainage function. Depending on the configuration of components such as the connecting rod, the first contact of the touch switch, and the second contact of the touch switch, when the water level in the inner cavity of the housing climbs to an excessively high level, the system will automatically trigger the drainage program. The core function of this automatic drainage mechanism is to provide a solid guarantee for the normal air extraction function of the air extraction pipe body, effectively avoiding the risk that the air extraction pipe body is flooded due to excessive water level rise, which will seriously affect the air extraction efficiency of the air extraction pipe body.

[0023] In summary, in terms of air extraction, the present invention arranges the air extraction pipe body above the center line of the heater corresponding to the steam cooling area, which can accurately and efficiently discharge air, ensure the normal condensation of steam, and improve the condensation heat transfer coefficient and overall heat transfer effect; and the air extraction pipe body is located in the range of 300 mm - 500 mm above the center line of the housing, effectively avoiding the interference of the water level on air extraction; at the same time, the through holes are arranged in equally spaced groups along the length direction of the air extraction pipe body to cover the entire length of the inner cavity of the housing, greatly improving the air extraction efficiency; in terms of water level control, through the foam board, baffle, signal transmitter, and signal receiver, water level warning and monitoring can be realized, and the buzzer will give a warning as the water level rises, which is convenient for the staff to respond; and rely on the connecting rod, the first contact of the touch switch, the second contact of the touch switch, etc. to achieve high-level automatic drainage, comprehensively ensuring the air extraction function of the air extraction pipe body and avoiding the reduction of the heater performance due to water level problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the front view structural schematic diagram of the housing of the present invention;

[0025] Figure 2 It is the structural schematic diagram of the tube bundle of the present invention;

[0026] Figure 3 It is the structural schematic diagram of the air extraction pipe body of the present invention;

[0027] Figure 4 It is the front view structural schematic diagram of the support plate of the present invention;

[0028] Figure 5 It is the structural schematic diagram of the guide rod of the present invention;

[0029] Figure 6 It is the structural schematic diagram of the support frame of the present invention;

[0030] Figure 7 It is the front view structural schematic diagram of the foam board of the present invention;

[0031] Figures 1 to 7Among them, 1. The first head, 2. The second head, 3. The shell, 4. The first tube sheet, 5. The second tube sheet, 6. The impact plate, 7. The tube bundle, 8. The support plate, 9. The support base, 10. The material inlet, 11. The material outlet, 12. The heat medium inlet, 13. The heat medium outlet, 14. The pressure regulating port, 15. The extraction pipe body, 16. The through hole, 17. The connecting pipe, 18. The extraction device, 19. The support frame, 20. The extension arm, 21. The signal transmitter, 22. The signal receiver, 23. The foam board, 24. The baffle plate, 25. The connecting rod, 26. The first contact of the touch switch, 27. The second contact of the touch switch, 28. The guide rod, 29. The buzzer, 30. The automatic drain outlet. Specific implementation mode

[0032] The following combines specific implementation cases and appendices Figures 1 to 7 to further illustrate the present invention, but the present invention is not limited to these embodiments.

[0033] Air extraction device for a heat network heater, including a heater system, further comprising: an extraction pipe body 15, a through hole 16, a connecting pipe 17, and an air extraction device 18. The extraction pipe body 15 is arranged horizontally inside the heater system, and the extraction pipe body 15 is set as a hollow tubular body. Through the hollow tubular extraction pipe body 15, the non-condensable gas inside the heater system can be extracted to the outside, avoiding the adverse effect of non-condensable gas on the steam condensation process; the through holes 16 are circumferentially and equidistantly arranged on the extraction pipe body 15, and the distance between two adjacent through holes 16 arranged horizontally is the same. Thus, it is ensured that the air extraction operation can be realized along the length direction of the extraction pipe body 15, and the coverage extends to the entire length interval of the inner cavity of the housing 3. Compared with the traditional single-point air extraction mode, the present invention can perform the air extraction operation on the air inside the housing 3 at multiple positions simultaneously. The multi-point collaborative operation mode greatly improves the air extraction efficiency, making the air discharge process inside the housing 3 more efficient and comprehensive; one end of the connecting pipe 17 is connected to the extraction pipe body 15, and the other end of the connecting pipe 17 extends outside the heater system; the air extraction device 18 is connected to the other end of the connecting pipe 17. The air extraction device 18 is a commonly used air extraction device in the existing market, and it only needs to meet the use requirements for extracting air from the heater. The model and other aspects are not limited and elaborated here; during the fluid heating process, a large amount of air (i.e., non-condensable gas) accumulates around the extraction pipe body 15. The air at this place is extracted into the connecting pipe 17 through the through hole 16 by the air extraction device 18 and is processed by the air extraction device 18 to avoid the excessive air content inside the housing 3 from affecting the heat exchange efficiency; in addition, the diameter of the connecting pipe 17 is the same as that of the extraction pipe body 15, and the two are connected by means of a three-way valve to ensure that when the extraction pipe body 15 performs the air extraction operation, the steam can flow smoothly into the inside of the connecting pipe 17. Moreover, due to the same caliber of the connecting pipe 17 and the extraction pipe body 15, the problem of connecting dead angles caused by different pipe diameters can be effectively avoided, ensuring the smoothness and stability of the steam transmission path.

[0034] The extraction pipe body 15 is arranged within the range of 300 mm - 500 mm above the horizontal central axis of the heater system. In this application, it is arranged at 400 mm above the horizontal central axis of the heater system. This area is the accumulation area of non-condensable gases. For this area, the extraction pipe body 15 of the present invention is arranged at a position above the center line of the heater, so that the extraction pipe body 15 can accurately and efficiently extract the air in this area and discharge it to the outside of the heater, fundamentally eliminating the phenomenon of air retention, and avoiding a series of adverse effects on the steam condensation process caused by air as non-condensable gas, such as hindering condensation and reducing the condensation rate. By evacuating the air in time, favorable conditions are created for the normal condensation of steam, ensuring that the steam can fully release the latent heat of vaporization, significantly accelerating the condensation rate of the steam, greatly improving the condensation efficiency. The improvement of the condensation efficiency further promotes the increase of the condensation heat transfer coefficient, and finally comprehensively and greatly enhances the overall heat transfer effect of the heater; in addition, within this range, on the premise of meeting the requirement of extracting the air in the housing 3, it can effectively avoid the interference of the water level in the housing 3 on the normal air extraction operation of the extraction pipe body 15, and can stably maintain the water level in the housing 3 always below the extraction pipe body 15, preventing the water from rising and entering the interior of the extraction pipe body 15, thereby affecting the air extraction process.

[0035] Mainly refer to Figure 2 As shown, the heater system includes: a first head 1, a second head 2, a housing 3, a first tube sheet 4, a second tube sheet 5, an impact plate 6, a tube bundle 7 and a support plate 8. The housing 3 is arranged between the first head 1 and the second head 2; the first tube sheet 4 is arranged between the first head 1 and the housing 3 and is coaxially arranged with the first head 1. Two groups of hole positions are arranged in the lower half of the first tube sheet 4, and a number of holes are arranged in each group of hole positions in a rectangular array; the second tube sheet 5 is arranged between the second head 2 and the housing 3 and is coaxially arranged with the second head 2. Two groups of hole positions are arranged in the lower half of the second tube sheet 5, and a number of holes are arranged in each group of hole positions in a rectangular array; the impact plate 6 is fixedly installed on the inner wall of the housing 3; two groups of tube bundles 7 are provided, and both ends of each group of tube bundles 7 are respectively communicated with the hole positions at the first tube sheet 4 and the second tube sheet 5. Thus, after the fluid material to be heated enters the first head 1, it can enter the tube bundle 7 through the first tube sheet 4 and enter the second head 2 through the tube bundle 7, forming a tube-side path. By introducing heating medium into the housing 3, the tube bundle 7 can be heated; a number of support plates 8 are provided, and the number of support plates 8 is fixedly installed in the inner cavity of the housing 3 at equal intervals in the horizontal direction. Among them, the impact plate 6 is sleeved outside the two groups of tube bundles 7, and the end of the tube bundle 7 is limited by the impact plate 6. The tube bundle 7 penetrates through the outer wall of the support plate 8 in the horizontal direction, and the support plate 8 can provide a supporting and limiting effect on the installation of the tube bundle 7.

[0036] In addition, the heater system further includes: a support base 9, a material inlet 10, a material outlet 11, a heat medium inlet 12, a heat medium outlet 13, and a pressure regulation port 14. There are two sets of support bases 9, and the two sets of support bases 9 are respectively installed at the bottom end of the housing 3; the material inlet 10 is arranged at the top end of the first head 1 and is communicated with the inner cavity of the first head 1; the material outlet 11 is arranged at the bottom end of the second head 2 and is communicated with the inner cavity of the second head 2; the heat medium inlet 12 is arranged at the bottom end of the housing 3 and is communicated with the inner cavity of the housing 3 for conveying the heat medium into the housing 3. Under normal working conditions, the fluid material to be heated enters the first head 1 through the material inlet 10 and travels to the right through the tube bundle 7. At the same time, the heating heat medium enters the housing 3 through the heat medium inlet 12 and wraps the entire tube bundle 7 to heat the fluid material to be heated in the tube bundle 7. The heated fluid material is output to the outside through the second head 2 and the material outlet 11 to complete the heat exchange work of the heat network feed water; the heat medium outlet 13 is arranged at the bottom end of the housing 3 and is communicated with the inner cavity of the housing 3 for discharging the heat medium in the housing 3. In addition, an existing market heating system can be arranged between the heat medium inlet 12 and the heat medium outlet 13. The heat medium for heating can be discharged to the outside through the heat medium outlet 13, reheated by the existing heating system, and then returned to the heat medium inlet 12 to re-enter the heating process, thereby ensuring that the heat medium always maintains a stable heating temperature and avoiding the reduction of the temperature after heat exchange with the cold fluid material in the tube bundle 7, which affects the heat exchange efficiency; the pressure regulation port 14 is arranged at the top end of the housing 3 and is communicated with the inner cavity of the housing 3 for regulating the pressure in the housing 3. The pressure regulation port 14 is externally connected to an existing pressure regulation device, and the pressure in the housing 3 is maintained at an appropriate level through the pressure regulation device. The appropriate pressure helps to maintain the heat transfer temperature difference between the steam and the water to be heated, so that the steam can maintain the corresponding saturation temperature at a specific pressure, thereby more effectively transferring the heat to the water to be heated and improving the heating efficiency. This is the prior art and will not be elaborated and limited here.

[0037] For main reference Figure 2 、 Figures 5 to 7 As shown in, the present solution further includes a drainage system. The drainage system includes: an automatic drainage port 30 and a water level warning component. The water level warning component prompts the staff that the water level in the housing 3 rises and corresponding measures need to be taken in time. The automatic drainage port 30 is arranged at the bottom end of the housing 3 and is communicated with the inner cavity of the housing 3. An electromagnetic valve is installed in the automatic drainage port 30, and the opening or closing of the electromagnetic valve can be controlled through an externally connected controller to realize the opening or closing of the automatic drainage port 30, so that the water in the housing 3 is discharged to the outside through the opened automatic drainage port 30. A drainage pump is externally connected to the automatic drainage port 30, and the condensate water in the housing 3 is discharged to the condenser of the operating unit through the drainage pump. The drainage pump and the condenser are both prior art, and the above components can meet the use requirements, and their models will not be limited and elaborated here; the water level warning component is arranged in the inner cavity of the housing 3.

[0038] The water level warning component includes: a support frame 19, an extension arm 20, a signal transmitter 21, a signal receiver 22, a foam board 23, a baffle 24, a guide rod 28, and a buzzer 29. The support frame 19 is fixedly installed on the right side wall of the first tube sheet 4; the extension arm 20 is fixedly installed on the side wall of the support frame 19; the signal transmitter 21 is installed on the side wall of the support frame 19 and corresponds to the side wall of the free end of the extension arm 20 in position; the signal receiver 22 is installed at the side wall of the free end of the extension arm 20, and the signal receiver 22 corresponds to the signal transmitter 21 in position; the signal transmitter 21 and the signal receiver 22 are commonly used signal receiving and transmitting combined products on the market. In this embodiment, the signal transmitter 21 is an infrared transmitter, and the signal receiver 22 is an infrared receiver. The transmitter emits infrared signals, and the receiver receives the signals. When an object blocks the infrared light and the receiver cannot receive the signals, an alarm signal will be emitted. It can meet the usage requirements, and the model thereof is not limited and elaborated here; the foam board 23 is arranged vertically in the support frame 19; the baffle 24 is vertically and fixedly installed on the upper surface of the foam board 23, and the baffle 24 can move vertically between the signal transmitter 21 and the signal receiver 22; there are two guide rods 28, and both of the two guide rods 28 are vertically installed in the inner cavity of the support frame 19, and the foam board 23 is slidably sleeved on the guide rods 28; the buzzer 29 is arranged on the first head 1. The buzzer 29 is a buzzer of a commonly used model in the existing market. It can emit a buzzer warning sound under the control of an external controller in this application to prompt the staff to take corresponding measures in time.

[0039] The water level warning component further includes: a connecting rod 25, a first touch switch contact 26, and a second touch switch contact 27. The connecting rod 25 is vertically and fixedly installed on the upper surface of the foam board 23, and the connecting rod 25 is located on the left side of the baffle 24; the first touch switch contact 26 is installed at the top of the connecting rod 25; the second touch switch contact 27 is installed on the side wall of the support frame 19, and the second touch switch contact 27 is arranged corresponding to the first touch switch contact 26 up and down. The first touch switch contact 26 and the second touch switch contact 27 are common touch switches on the existing market, and the circuit is turned on and off through the contact of the contacts to transmit signals. That is, when the first touch switch contact 26 and the second touch switch contact 27 are in contact, the signal can be transmitted to the external controller in this solution for processing to control the opening of the solenoid valve in the pressure regulating port 14 to realize the automatic drainage of the condensed water in the housing 3 to the outside. The above components can meet the use requirements, and the model thereof is not limited and elaborated here; the height of the connecting rod 25 is higher than the height of the baffle 24, so as to ensure that when the first touch switch contact 26 at the top of the connecting rod 25 contacts the second touch switch contact 27, the baffle 24 still does not touch the top end of the inner wall of the support frame 19, that is, it can avoid the situation where the baffle 24 affects the normal function of the first touch switch contact 26 and the second touch switch contact 27.

[0040] The density of the foam board 23 is less than the density of water. In this embodiment, the baffle 24 is a foam board, and its density coefficient is 0.03 g / cm3, and the density of water is 1 g / cm3. In addition, the overall density of the foam board 23, the baffle 24, the connecting rod 25, and the first touch switch contact 26 still ensures that it is less than the density of water to ensure that the water level can cause the above four to always float above the water level surface, so as to achieve the purpose of the water level driving the above four to move synchronously up and down.

[0041] This device is connected with a general external controller on the market, which is a master control device that can change the wiring of the main circuit or the control circuit and change the resistance value in the circuit in a predetermined order to control the starting, speed regulation, braking, and reverse of the motor. The external controller controls the start and stop of the electrical components in this application, etc., and can process the electrical signals of the signal transmitter 21, the signal receiver 22, the first touch switch contact 26, the second touch switch contact 27, the buzzer 29, and the solenoid valve in the automatic drain port 30 and issue instructions. This is the prior art, and the model thereof is not limited and elaborated here.

[0042] The working principle of the steam extraction device of the heat network heater in this embodiment is as follows:

[0043] Under normal working conditions, the fluid material to be heated enters the first head 1 through the material inlet 10 and travels to the right through the tube bundle 7. At the same time, the heating heat medium enters the shell 3 through the heat medium inlet 12 and wraps the entire tube bundle 7 to heat the fluid material to be heated in the tube bundle 7. The heated fluid material is output to the outside through the second head 2 and the material outlet 11, completing the heat exchange work of the heat network feed water;

[0044] During the process of fluid heating, a large amount of air (i.e., non-condensable gas) generated accumulates around the air extraction pipe body 15. The air at this place is extracted into the connecting pipe 17 through the through hole 16 by the air extraction device 18 and processed by the air extraction device 18 to prevent the excessive air content in the shell 3 from affecting the heat exchange efficiency;

[0045] As the condensate water in the shell 3 increases, the liquid level of the heat medium for heating rises. First, it will cause the foam board 23 to drive the baffle 24 and the connecting rod 25 to move upward synchronously along the buzzer 29. When the baffle 24 moves upward between the signal transmitter 21 and the signal receiver 22, the signal between the signal transmitter 21 and the signal receiver 22 will be blocked. At this time, this signal is transmitted to the external controller, and the external controller controls the buzzer 29 to emit a warning sound to prompt the staff that the water level in the shell 3 is at a high level and corresponding measures need to be taken in time to prevent the water level from rising to the air extraction pipe body 15 and affecting air extraction;

[0046] If the staff does not take measures in time, the foam board 23 will continue to rise with the liquid level until the connecting rod 25 drives the first contact 26 of the touch switch to trigger the second contact 27 of the touch switch. After the first contact 26 and the second contact 27 of the touch switch come into contact, the signal is transmitted to the external controller, and the external controller controls the solenoid valve in the automatic drain port 30 to open automatically, causing the excessive water in the shell 3 to be discharged to the outside through the automatic drain port 30. As the liquid level in the shell 3 drops, it causes the foam board 23 to drive the connecting rod 25 and the baffle 24 to descend synchronously until the baffle 24 descends to disengage from between the signal transmitter 21 and the signal receiver 22. At this time, the signal transmitter 21 and the signal receiver 22 resume the connection signal and transmit this signal to the external controller, and the external controller controls the solenoid valve in the automatic drain port 30 to close, thereby realizing the automatic closing of the automatic drain in the shell 3 after draining the water to a suitable position;

[0047] In terms of air extraction, the air extraction pipe body 15 of the present invention is arranged above the center line of the heater corresponding to the steam cooling area, which can accurately and efficiently discharge air, ensure the normal condensation of steam, and improve the condensation heat transfer coefficient and the overall heat transfer effect. Moreover, the air extraction pipe body 15 is located in the range of 300 mm - 500 mm above the center line of the housing 3, effectively avoiding the interference of the water level on air extraction. At the same time, the through holes 16 are arranged in equally spaced groups along the length direction of the air extraction pipe body 15 to cover the entire length of the inner cavity of the housing 3, greatly improving the air extraction efficiency. In terms of water level control, the water level warning and monitoring can be realized through the foam board 23, the baffle 24, the signal transmitter 21, and the signal receiver 22. When the water level rises, the buzzer 29 emits a warning, which is convenient for the staff to respond. And the high-level automatic drainage is realized by relying on the connecting rod 25, the first touch switch contact 26, the second touch switch contact 27, etc., comprehensively ensuring the air extraction function of the air extraction pipe body 15 and avoiding the reduction of the heater performance due to water level problems.

[0048] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. The attached drawings are only for reference and explanation purposes and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of explanation, multiple details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be shown in a simplified manner to simplify the drawings.

[0049] In the embodiments of the present disclosure, the terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and do not have to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so as to implement the embodiments of the present disclosure described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0050] In the embodiments of the present disclosure, the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and their embodiments and are not used to limit that the indicated devices, elements or components must have a specific orientation or be constructed and operated in a specific orientation. And, in addition to being able to represent the orientation or positional relationship, some of the above terms may also be used to represent other meanings. For example, the term "upper" may also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0051] In addition, the terms "arranged", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or there can be internal communication between two devices, components, or parts. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0052] Unless otherwise specified, the term "plurality" means two or more.

[0053] In the embodiments of the present disclosure, the character " / " indicates that the objects before and after are in an "or" relationship. For example, A / B means: A or B.

[0054] The term "and / or" describes the associated relationship of the objects and indicates that there can be three relationships. For example, A and / or B means: A or B, or, A and B, these three relationships.

[0055] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heat network heater exhaust device, including a heater system, characterized in that: Also includes: An air extraction pipe body (15), the air extraction pipe body (15) is arranged in the inner cavity of the heater system along a horizontal direction, and the air extraction pipe body (15) is arranged as a hollow tubular body; Through holes (16), the through holes (16) are arranged on the exhaust pipe body (15) at equal intervals along the circumferential direction, and the spacing between two adjacent through holes (16) arranged in the horizontal direction is the same; A connecting pipe (17), one end of which is connected to the exhaust pipe body (15), and the other end of which extends out of the heater system; An air extraction device (18), wherein the air extraction device (18) is connected to the other end of the connecting pipe (17).

2. The exhaust device for the heating network heater according to claim 1, characterized in that: The exhaust pipe body (15) is arranged within a range of 300 mm to 500 mm above the horizontal central axis of the heater system.

3. The exhaust device for the heating network heater according to claim 1, characterized in that: The heater system comprises: A first end cap (1), a second end cap (2), and a shell (3), wherein the shell (3) is arranged between the first end cap (1) and the second end cap (2); A first tube sheet (4), the first tube sheet (4) being arranged between the first end cover (1) and the shell (3), and being coaxially arranged with the first end cover (1), the lower half of the first tube sheet (4) being provided with two groups of holes, each group of holes being provided with a plurality of holes in a rectangular array; A second tube sheet (5), the second tube sheet (5) being arranged between the second end cover (2) and the shell (3), and being coaxially arranged with the second end cover (2), the lower half of the second tube sheet (5) being provided with two groups of holes, each group of holes being provided with a plurality of holes in a rectangular array; An anti-collision plate (6), the anti-collision plate (6) being fixedly mounted on the inner wall of the shell (3); A tube bundle (7), wherein the tube bundle (7) is provided in two groups, and two ends of each group of the tube bundle (7) are respectively connected to holes at the first tube sheet (4) and the second tube sheet (5); A support plate (8), wherein a plurality of the support plates (8) are provided, and the plurality of the support plates (8) are fixedly installed in the inner cavity of the shell (3) at equal intervals along the horizontal direction; The anti-collision plate (6) is sleeved on the outside of the two groups of tube bundles (7), and the tube bundles (7) penetrate the outer wall of the support plate (8) in the horizontal direction.

4. The exhaust device for the heating network heater according to claim 3 is characterized in that: The heater system further comprises: Support seats (9), wherein two groups of support seats (9) are provided, and the two groups of support seats (9) are respectively installed at the bottom ends of the shell (3); A material inlet (10), the material inlet (10) being arranged at the top of the first end cap (1) and being in communication with the inner cavity of the first end cap (1); A material outlet (11), the material outlet (11) being arranged at the bottom end of the second end cap (2) and being communicated with the inner cavity of the second end cap (2); A heat medium inlet (12), the heat medium inlet (12) being arranged at the bottom end of the shell (3) and being communicated with the inner cavity of the shell (3) for conveying heat medium into the shell (3); a heat medium outlet (13), the heat medium outlet (13) being arranged at the bottom end of the shell (3) and being communicated with the inner cavity of the shell (3) for discharging the heat medium in the shell (3); A pressure regulating port (14) is arranged at the top end of the shell (3) and is communicated with the inner cavity of the shell (3) for regulating the pressure in the shell (3).

5. The exhaust device for the heating network heater according to claim 4, characterized in that: Also included is a drainage system, the drainage system comprising: An automatic drain port (30), the automatic drain port (30) being arranged at the bottom end of the shell (3) and being in communication with the inner cavity of the shell (3); A water level warning component is arranged in the inner cavity of the shell (3).

6. The exhaust device for the heating network heater according to claim 5, characterized in that: The water level warning component comprises: A support frame (19), the support frame (19) is fixedly mounted on the right side wall of the first tube sheet (4); An extension arm (20), the extension arm (20) being fixedly mounted on a side wall of the support frame (19); A signal transmitter (21), the signal transmitter (21) being mounted on a side wall of the support frame (19) and corresponding to the position of the side wall of the free end of the extension arm (20); A signal receiver (22), the signal receiver (22) being mounted on a side wall of a free end of the extension arm (20), and the signal receiver (22) and the signal transmitter (21) are located correspondingly; A foam plate (23), wherein the foam plate (23) is arranged in the support frame (19) along a vertical direction; a baffle (24), wherein the baffle (24) is vertically and fixedly mounted on the upper surface of the foam plate (23), and the baffle (24) can be displaced in a vertical direction between the signal transmitter (21) and the signal receiver (22); A guide rod (28), wherein two guide rods (28) are provided, and both guide rods (28) are vertically mounted in the inner cavity of the support frame (19), and the foam plate (23) is slidably sleeved on the guide rods (28); A buzzer (29), wherein the buzzer (29) is arranged on the first sealing head (1).

7. The exhaust device for the heating network heater according to claim 6, characterized in that: The water level warning component also includes: A connecting rod (25), the connecting rod (25) being vertically and fixedly mounted on the upper surface of the foam plate (23), and the connecting rod (25) being located on the left side of the baffle (24); A first contact point (26) of a light touch switch, wherein the first contact point (26) of the light touch switch is installed at the top end of the connecting rod (25); A second contact (27) of the touch switch, the second contact (27) of the touch switch is installed on the side wall of the support frame (19), and the second contact (27) of the touch switch is arranged correspondingly to the first contact (26) of the touch switch.

8. The exhaust device for the heating network heater according to claim 1, characterized in that: The density of the foam plate (23) is less than the density of water.

9. The exhaust device for the heating network heater according to claim 1, characterized in that: The height of the connecting rod (25) is higher than the height of the baffle (24).

10. The exhaust device for the heating network heater according to claim 1, characterized in that: The diameter of the connecting pipe (17) is the same as the diameter of the air extraction pipe body (15).

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