A condensate siphon return assembly

Abstract

The utility model relates to condensing reflux equipment technical field, concretely relates to a condensate siphon reflux pipe subassembly, including the expansion pipe, the bottom end fixed mounting of expansion pipe has the reducing pipe, the top of expansion pipe detachably installs and enters the liquid cover, the top fixed mounting of liquid cover has the lead -through pipe, the fixed mounting of lead -through pipe has the solenoid valve, the one side of expansion pipe is provided with micro -vacuum pump, the fixed mounting of micro -vacuum pump's suction end has the suction pipe, the fixed mounting of suction pipe's end part has the inclined pipe, the end part fixed mounting of inclined pipe is in expansion pipe and with the inside of expansion pipe is linked together, the fixed mounting of reducing pipe has the balance branch pipe, the end part of balance branch pipe is connected to the top position department of outside condensing equipment, the utility model has the effect that guarantees stable siphon, avoids reflux interruption, and simultaneously has the advantage that system pressure dynamic balance.

Description

Technical Field

[0001] This utility model relates to the field of condensation reflux equipment technology, specifically to a condensate siphon reflux pipe assembly. Background Technology

[0002] In industrial scenarios such as chemical reactions, refrigeration cycles, and thermal systems, the efficient recovery and reflux of condensate is a key link in ensuring system energy efficiency and reducing resource waste. The condensate generated during the operation of the heat reflux single-effect concentration device needs to be promptly transported back to the designated container or circulation system through the reflux pipe assembly to avoid the accumulation of condensate in the equipment, which would lead to a decrease in heat exchange efficiency. At the same time, it enables the secondary utilization of condensate (such as as makeup water, raw material recovery, etc.).

[0003] Existing condensate return pipes mostly rely on natural siphon or gravity drive. When the amount of condensate generated is small, the pressure fluctuation in the system is large, or there is local resistance in the return pipe path (such as pipe bends), the siphon effect is prone to failure and the return is interrupted. This causes the condensate to stagnate in the condensation equipment, which not only reduces the heat exchange efficiency of the equipment, but may also cause corrosion or functional failure due to the condensate soaking the components. It is difficult to meet the return requirements of low flow and high stability.

[0004] Furthermore, existing connections between reflux pipes and condensing equipment are mostly single-path designs, failing to consider the pressure balance between the internal pressure of the condensing equipment and the reflux pipe system. When pressure fluctuations occur within the condensing equipment due to the condensation process (such as increased negative pressure or accumulated positive pressure), the pressure difference interferes with the normal flow of condensate, and may even lead to "airlock" in the reflux pipe, further exacerbating the poor reflux. Simultaneously, the lack of a pressure balancing structure also increases the operating load on the condensing equipment, shortening its service life. Therefore, we propose a condensate siphon reflux pipe assembly. Utility Model Content

[0005] The purpose of this invention is to provide a condensate siphon return pipe assembly to address the deficiencies mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A condensate siphon return pipe assembly includes an expanding pipe, a reducing pipe fixedly installed at the bottom end of the expanding pipe, a liquid inlet cover detachably installed at the top of the expanding pipe, a guide pipe fixedly installed at the top end of the liquid inlet cover, a solenoid valve fixedly installed on the guide pipe, a miniature vacuum pump disposed on one side of the expanding pipe, a suction pipe fixedly installed at the suction end of the miniature vacuum pump, an inclined pipe fixedly installed at the end of the suction pipe, the end of the inclined pipe fixedly installed on the expanding pipe and communicating with the interior of the expanding pipe, and a balancing branch pipe fixedly installed on the reducing pipe, the end of the balancing branch pipe being connected to the top of an external condensation device.

[0008] Preferably, the inclined tube is inclined downward at 45 to 60 degrees, and a liquid baffle is fixedly installed on the inner wall of the expanded diameter tube to protect the air inlet end of the inclined tube inside.

[0009] Preferably, the liquid-retaining shield is quarter-spherical, and the bottom of the liquid-retaining shield is connected to the inside of the expanding pipe;

[0010] The above two settings enable the miniature vacuum pump to operate normally while preventing liquid from being sucked into the miniature vacuum pump.

[0011] Preferably, an electromagnetic flow regulating valve is fixedly installed on the reduced diameter pipe, and an outlet fixing connector is fixedly installed at the outlet end of the reduced diameter pipe.

[0012] Preferably, the inlet end of the guide tube is fixedly installed with an inlet fixing connector, and the surfaces of the reducing pipe, the expanding pipe, the inlet cover and the guide tube are all provided with a heat insulation layer;

[0013] The insulation layer in this feature can protect the pipe from secondary crystallization of condensate.

[0014] Preferably, a control host is provided on one side of the expanded diameter pipe, and a liquid level sensor is detachably installed on one side of the expanded diameter pipe.

[0015] Preferably, a fixing sleeve is integrally formed on one side of the expanded diameter pipe, and the liquid level sensor is inserted into the fixing sleeve.

[0016] This setting facilitates the installation and removal of the liquid level sensor.

[0017] Preferably, the bottom of the fixing sleeve is provided with an inclined surface, which is inclined downward at 30 to 45 degrees toward the side of the expanded diameter tube;

[0018] This design makes it less likely for liquid residue to remain in the retaining sleeve area.

[0019] Preferably, a fixing support is fixedly installed at the end of the liquid level sensor, a sealing ring is sleeved on the liquid level sensor, and the fixing support is detachably installed on the side of the fixing sleeve, and the fixing support presses the sealing ring tightly on the side of the fixing sleeve.

[0020] This feature facilitates the installation of the level sensor and provides a good seal.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] 1. This utility model, through the setting of a miniature vacuum pump, an inclined tube, an expansion tube, and a solenoid valve, uses a miniature vacuum pump to draw air from the expansion tube through the suction tube and the inclined tube to form a stable negative pressure. With the help of the solenoid valve to control the timing of liquid inlet in the conduction tube, even if the amount of condensate produced is small or there is local resistance in the pipeline, the siphon effect can be maintained to avoid backflow interruption. This achieves stable recovery of condensate under low flow conditions, and achieves the effects of preventing condensate from stagnating in the equipment, ensuring heat exchange efficiency and equipment corrosion prevention.

[0023] 2. This utility model, through the setting of a balance branch pipe and a reducing pipe, with the balance branch pipe connecting the reducing pipe to the top of the external condensing equipment, can balance the pressure inside the condensing equipment and the return pipe system in real time, avoiding the "air lock" phenomenon caused by the increase of negative pressure or the accumulation of positive pressure inside the equipment, while reducing the load impact of pressure fluctuations on the condensing equipment, realizing the dynamic balance of system pressure, and achieving the effect of alleviating the problem of poor return flow and extending the service life of the condensing equipment.

[0024] 3. This utility model uses a liquid level sensor, a control host, and an electromagnetic flow regulating valve. The liquid level sensor monitors the liquid level of the condensate in the expansion pipe and feeds it back to the control host. The host adjusts the opening and closing degree of the electromagnetic flow regulating valve according to the liquid level data to accurately control the reflux rate and avoid system problems caused by excessively fast or slow reflux. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a partial structural schematic diagram of the present invention;

[0027] Figure 3 This is a schematic diagram of the structure of the liquid-retaining cover of this utility model;

[0028] The meanings of the labels in the diagram are as follows:

[0029] 1. Expanding pipe; 10. Reducing pipe; 11. Electromagnetic flow regulating valve; 12. Liquid outlet fixed connector; 13. Liquid inlet hood; 14. Conductor pipe; 141. Solenoid valve; 142. Liquid inlet fixed connector; 15. Insulation layer;

[0030] 2. Miniature vacuum pump; 20. Suction tube; 21. Inclined tube; 22. Liquid baffle;

[0031] 3. Balanced branch pipes;

[0032] 4. Fixing sleeve; 40. Inclined surface; 41. Liquid level sensor; 42. Fixing support; 43. Sealing ring;

[0033] 5. Control host. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0036] Please see Figures 1-3 This utility model provides a technical solution: a condensate siphon return pipe assembly, including an expansion pipe 1, a reduction pipe 10 fixedly installed at the bottom end of the expansion pipe 1, a liquid inlet cover 13 detachably installed at the top of the expansion pipe 1, a guide pipe 14 fixedly installed at the top end of the liquid inlet cover 13, and a solenoid valve 141 fixedly installed on the guide pipe 14. The expansion pipe 1 provides a larger cavity to facilitate the formation of a stable siphon, the reduction pipe 10 accelerates the condensate flow rate, and the solenoid valve 141 controls the timing of liquid inlet in the guide pipe 14, so that the condensate can enter the return pipe in an orderly manner, avoiding liquid inlet disorder from affecting the siphon effect and ensuring the stability of the return process.

[0037] In this embodiment, a miniature vacuum pump 2 is provided on one side of the expansion tube 1. A suction pipe 20 is fixedly installed at the suction end of the miniature vacuum pump 2, and an inclined pipe 21 is fixedly installed at the end of the suction pipe 20. The end of the inclined pipe 21 is fixedly installed on the expansion tube 1 and connected to the inside of the expansion tube 1. The inclined pipe 21 is inclined downward at 45 degrees to 60 degrees. A liquid baffle 22 is fixedly installed on the inner wall of the expansion tube 1 to protect the air inlet end of the inclined pipe 21 inside. The liquid baffle 22 is quarter-spherical, and the bottom of the liquid baffle 22 is connected to the inside of the expansion tube 1. The miniature vacuum pump 2 draws air from the expansion tube 1 through the suction pipe 20 and the inclined pipe 21 to form a negative pressure. The liquid baffle 22 prevents liquid from being sucked into the pump body, so that the vacuum pump can maintain siphoning normally and at the same time avoid liquid damage to the pump body and ensure the safe operation of the equipment.

[0038] like Figure 1As shown, a balance branch pipe 3 is fixedly installed on the reducer pipe 10. The end of the balance branch pipe 3 is connected to the top of the external condensing equipment, which can transmit the pressure between the condensing equipment and the reducer pipe 10 in real time. When the negative pressure rises or the positive pressure accumulates in the condensing equipment due to the condensation process, the pressure can be quickly transmitted to the reducer pipe 10 through the balance branch pipe 3, realizing the dynamic balance of the two pressures. This avoids the "air lock" phenomenon in the return pipe caused by the pressure difference, allowing the condensate to flow smoothly and ensuring the stability of the siphon return effect. In addition, the balance branch pipe 3 can effectively alleviate the pressure fluctuations inside the condensing equipment and reduce the impact of sudden pressure changes on the condensing equipment shell. The system mitigates the impact on the heat exchange components and prevents excessive pressure loads over long periods, which could lead to aging or damage to equipment components. Finally, the balancing branch pipe 3 establishes pressure connection between the reduced-diameter pipe 10 and the top of the condensing equipment. Even under conditions of large fluctuations in condensate production, the system can maintain the stability of the siphon effect within the return pipe through pressure balancing, preventing sudden increases or decreases in the return rate due to pressure changes. This ensures that the amount of condensate recovered matches the amount produced by the equipment, preventing excessive load on downstream pipelines due to excessively fast return flow, and preventing condensate accumulation within the equipment due to excessively slow return flow, which could affect heat exchange efficiency. This improves the adaptability and operational reliability of the entire condensate recovery system.

[0039] like Figure 1 As shown, an electromagnetic flow regulating valve 11 is fixedly installed on the reduced diameter pipe 10, and an outlet fixed connector 12 is fixedly installed at the outlet end of the reduced diameter pipe 10. The electromagnetic flow regulating valve 11 can accurately adjust the condensate return rate, and the outlet fixed connector 12 facilitates a stable connection with the downstream pipeline, so that the return rate can be adapted to different working conditions and the pipeline connection is reliable, avoiding leakage at the connection.

[0040] like Figure 1 As shown, a liquid inlet fixing connector 142 is fixedly installed at the liquid inlet end of the guide pipe 14. The surfaces of the reducing pipe 10, expanding pipe 1, liquid inlet cover 13 and guide pipe 14 are all provided with heat insulation layer 15. The liquid inlet fixing connector 142 is convenient to connect to the outlet of the condensing equipment. The heat insulation layer 15 prevents the condensate from undergoing secondary crystallization due to excessively low temperature inside the pipe, avoids pipe blockage, and ensures smooth flow of condensate.

[0041] Specifically, a control host 5 is installed on one side of the expansion pipe 1, and a liquid level sensor 41 is detachably installed on one side of the expansion pipe 1. A fixing sleeve 4 is integrally formed on one side of the expansion pipe 1. The liquid level sensor 41 and the fixing sleeve 4 are inserted and matched. The liquid level sensor 41 monitors the liquid level in the expansion pipe 1 and feeds it back to the control host 5. The fixing sleeve 4 facilitates the installation and removal of the sensor, enabling the host to obtain liquid level data in real time to regulate the backflow, while reducing the difficulty of sensor maintenance and improving the automation level of the system.

[0042] Furthermore, the bottom of the fixing sleeve 4 is provided with a slope 40, which is inclined downward at 30 to 45 degrees toward the side of the expansion tube 1. The slope 40 guides the liquid to flow into the expansion tube 1, so that the fixing sleeve 4 is not easy to retain liquid, avoids liquid stagnation, ensures that the fixing sleeve 4 and the sensor are clean, and extends the service life of the sensor.

[0043] In addition, a fixed support 42 is fixedly installed at the end of the liquid level sensor 41, and a sealing ring 43 is fitted on the liquid level sensor 41. The fixed support 42 is detachably installed on the side of the fixed sleeve 4. The fixed support 42 presses the sealing ring 43 tightly on the side of the fixed sleeve 4. The fixed support 42 facilitates the fixed installation of the sensor, and the sealing ring 43 enhances the sealing performance at the connection and prevents gas or liquid leakage in the expanded diameter pipe 1. This not only improves the ease of installation but also ensures the sealing performance of the system.

[0044] It is worth noting that when the solenoid valve 141, the miniature vacuum pump 2, the electromagnetic flow regulating valve 11, the liquid level sensor 41, and the control host 5 are working together, the liquid level sensor 41 monitors the liquid level of the condensate in the expansion pipe 1 in real time and converts the liquid level data into an electrical signal, which is continuously transmitted to the control host 5. The control host 5, as the central hub, receives and stores the liquid level signal, and simultaneously presets liquid level range parameters to provide a basis for subsequent command issuance. When the control host 5 determines that the liquid level transmitted by the liquid level sensor 41 is lower than the "rainbow line" (i.e., the liquid level is below the required level), the liquid level sensor 41 will detect the liquid level of the condensate. When the "siphon start threshold" is reached, two sets of instructions are issued simultaneously: First, the micro vacuum pump 2 is started. The micro vacuum pump 2 draws air from the expansion tube 1 through the suction pipe 20 and the inclined pipe 21, creating a negative pressure environment in the expansion tube 1 to provide power for the establishment of the siphon effect; Second, the opening degree of the solenoid valve 141 on the connecting pipe 14 is controlled. The condensate generated by the external condensing equipment enters the expansion tube 1 through the liquid inlet fixed connector 142 and the connecting pipe 14. After the liquid level sensor 41 detects that the liquid level has reached the "siphon stability threshold", the signal is sent to the expansion tube 1. The signal is fed back to the control host 5, which then controls the micro vacuum pump 2 to stop pumping air. At this time, a stable negative pressure has been formed in the expansion pipe 1, and the condensate can be kept flowing continuously by relying on the siphon effect. Finally, when the condensate flows into the reduction pipe 10 through the expansion pipe 1, the control host 5 issues a command to adjust the electromagnetic flow regulating valve 11 on the reduction pipe 10 according to the real-time liquid level change rate transmitted by the liquid level sensor 41: if the liquid level rises too fast, it means that the inflow of condensate is greater than the outflow, and the host controls the electromagnetic flow regulating valve 11 to increase the opening degree and speed up the return flow rate; if the liquid level drops too fast, it means that the outflow is greater than the inflow, so the opening degree is reduced and the return flow rate is slowed down to ensure that the liquid level in the expansion pipe 1 is always maintained within the preset range. Throughout the process, the control host 5 continuously receives the signal from the liquid level sensor 41 and dynamically adjusts the working status of the micro vacuum pump 2, the solenoid valve 141, and the electromagnetic flow regulating valve 11 to achieve automated and precise control of condensate return. It can adapt to the fluctuation of condensate generation without manual intervention and ensure the stable operation of the siphon effect.

[0045] Finally, it should be noted that the solenoid valve 141, micro vacuum pump 2, electromagnetic flow regulating valve 11, liquid level sensor 41, control host 5, corresponding control system and external power supply of this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components and the matching controller and power supply, are connected by wires. The specific connection method should refer to the working principle of this utility model. The electrical connection between each electrical component is completed in the order of operation. The detailed connection method is a technology known in the art.

[0046] When using the condensate siphon return pipe assembly of this utility model, the liquid outlet fixed joint 12 of the bottom reducing pipe 10 of the expanding pipe 1 is connected to the downstream pipeline, the liquid inlet fixed joint 142 of the conducting pipe 14 is connected to the outlet of the external condensing equipment, and the end of the balance branch pipe 3 is connected to the top of the condensing equipment. The control host 5 is turned on to preset the liquid level threshold. If the siphon starts and the stabilization threshold is reached, after the control host 5 receives the low liquid level signal from the liquid level sensor 41, it starts the micro vacuum pump 2, which draws air into the expanding pipe 1 through the suction pipe 20 and the inclined pipe 21 to form a negative pressure. At the same time, the solenoid valve 141 is opened, and the condensate enters the expanding pipe 1 through the conducting pipe 14 and the liquid inlet cover 13. When the liquid level reaches the stabilization threshold, the main unit stops the vacuum pump and relies on the siphon to maintain the return flow.

[0047] After the condensate flows into the reducer 10, the main unit adjusts the electromagnetic flow regulating valve 11 according to the rate of change of the liquid level fed back by the liquid level sensor 41: if the liquid level rises quickly, the valve is widened to accelerate the return flow, and if it falls quickly, the valve is narrowed to slow down the flow; the balance branch pipe 3 balances the pressure between the condensing equipment and the reducer 10 in real time, and the insulation layer 15 prevents secondary crystallization of the condensate to ensure stable return flow.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A condensate siphon return pipe assembly, characterized in that: The device includes an expansion pipe (1), a reduction pipe (10) fixedly installed at the bottom end of the expansion pipe (1), a liquid inlet cover (13) detachably installed at the top of the expansion pipe (1), a guide pipe (14) fixedly installed at the top of the liquid inlet cover (13), a solenoid valve (141) fixedly installed on the guide pipe (14), a micro vacuum pump (2) is provided on one side of the expansion pipe (1), a suction pipe (20) is fixedly installed at the suction end of the micro vacuum pump (2), an inclined pipe (21) is fixedly installed at the end of the suction pipe (20), the end of the inclined pipe (21) is fixedly installed on the expansion pipe (1) and connected to the inside of the expansion pipe (1), a balance branch pipe (3) is fixedly installed on the reduction pipe (10), and the end of the balance branch pipe (3) is connected to the top position of the external condensing equipment.

2. The condensate siphon return pipe assembly according to claim 1, characterized in that: The inclined tube (21) is inclined downward at 45 to 60 degrees, and a liquid baffle (22) is fixedly installed on the inner wall of the expanded diameter tube (1) to protect the air inlet end of the inclined tube (21) inside.

3. The condensate siphon return pipe assembly according to claim 2, characterized in that: The liquid baffle (22) is quarter-sphere shaped, and the bottom of the liquid baffle (22) is connected to the inside of the expansion tube (1).

4. The condensate siphon return pipe assembly according to claim 1, characterized in that: An electromagnetic flow regulating valve (11) is fixedly installed on the reduced diameter pipe (10), and an outlet fixing connector (12) is fixedly installed at the outlet end of the reduced diameter pipe (10).

5. The condensate siphon return pipe assembly according to claim 1, characterized in that: The inlet end of the guide tube (14) is fixedly installed with an inlet fixing connector (142), and the surfaces of the reduced diameter tube (10), the expanded diameter tube (1), the inlet cover (13) and the guide tube (14) are all provided with a heat insulation layer (15).

6. The condensate siphon return pipe assembly according to claim 1, characterized in that: A control host (5) is provided on one side of the expansion pipe (1), and a liquid level sensor (41) is detachably installed on one side of the expansion pipe (1).

7. The condensate siphon return pipe assembly according to claim 6, characterized in that: A fixed sleeve (4) is integrally formed on one side of the expanded diameter pipe (1), and the liquid level sensor (41) is inserted into the fixed sleeve (4).

8. The condensate siphon return pipe assembly according to claim 7, characterized in that: The bottom of the fixed sleeve (4) is provided with a slope (40), which is inclined downward at 30 to 45 degrees toward the side of the expanded diameter pipe (1).

9. The condensate siphon return pipe assembly according to claim 8, characterized in that: A fixed support (42) is fixedly installed at the end of the liquid level sensor (41), and a sealing ring (43) is sleeved on the liquid level sensor (41). The fixed support (42) is detachably installed on the side of the fixed sleeve (4), and the fixed support (42) presses the sealing ring (43) tightly on the side of the fixed sleeve (4).

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