High-temperature condensate pump protection device

Abstract

The utility model relates to the technical field of pump equipment protection, and particularly discloses a high-temperature condensate pump protection device which comprises a main pump body, the liquid inlet end of the main pump body is communicated with liquid supply equipment through a U-shaped pipe, a first drain valve is arranged at the communication position of the U-shaped pipe and the liquid supply equipment, and the liquid outlet end of the main pump body is communicated with receiving equipment through an L-shaped pipe. When the main pump body is shut down due to faults, the external control box can immediately close the first liquid discharge valve and the second liquid discharge valve and open the first valve, the second valve and the communicating assembly, so that the first communicating pipe and the second communicating pipe are communicated with the outside, and the first communicating pipe and the second communicating pipe are communicated with the outside according to the principle of communicating vessels. High-temperature condensate remaining in a pipeline in the main pump body can flow into the U-shaped pipe and the L-shaped pipe below the main pump body, and high-temperature condensate can flow into the first communicating pipe and the second communicating pipe, so that the high-temperature condensate remaining in the pipeline in the main pump body is discharged, and the situation that the high-temperature condensate cannot be discharged out of the pipeline in the main pump body is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pump equipment protection, and particularly designs a protection device for a high-temperature condensate pump. Background Art

[0002] In the field of chemical production, the cooling process of high-temperature gas is a crucial link. When high-temperature gas undergoes phase change under specific cooling conditions, such as passing through a condenser, it changes from gaseous state to liquid state. The liquid substance generated from this transformation is called high-temperature condensate. It is not only a by-product in the production process but also a valuable resource rich in energy. The main function of the high-temperature condensate pump is to efficiently transport the high-temperature condensate from one position at the production site to another position where this energy is needed. Through precise pumping control, the thermal energy in the high-temperature condensate can be fully utilized to provide power or thermal energy support for various industrial processes.

[0003] In the actual application process of the high-temperature condensate pump, due to its special working environment and pumping medium - high-temperature condensate, the pump body and its internal pipelines often face the challenge of high temperature. Long-term high-temperature environment and other external factors, such as impurities, corrosion, and external impact in the medium, will cause damage to the high-temperature condensate pump, such as overheating, wear, and leakage problems. This requires the high-temperature condensate pump to be shut down for maintenance. Whether it is proactive shutdown for maintenance or shutdown caused by faults, there will still be high-temperature condensate remaining in the pipelines inside the pump body. These residual liquids not only continue to cause thermal damage to the pipelines, leading to pipeline deformation, aging, and even rupture, but also bring inconvenience to the maintenance work, such as increasing the maintenance difficulty and prolonging the maintenance time. Based on this, the inventor purposefully provides a protection device for a high-temperature condensate pump that can empty the medium inside the pump body. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a protection device for a high-temperature condensate pump that can empty the medium inside the pump body to solve the problem that the internal residual medium cannot be discharged when the high-temperature condensate pump stops working in the prior art.

[0005] The purpose of the utility model can be realized by the following technical solutions:

[0006] A high-temperature condensate pump protection device, which includes a main pump body. The liquid inlet end of the main pump body is connected to a liquid supply device through a U-shaped pipe. A first drain valve is provided at the connection between the U-shaped pipe and the liquid supply device. The liquid outlet end of the main pump body is connected to a receiving device through an L-shaped pipe. A second drain valve is provided on the L-shaped pipe. A first connecting pipe is connected to the U-shaped pipe. A first valve is provided at the connection between the first connecting pipe and the U-shaped pipe. A second connecting pipe is connected to the L-shaped pipe. A second valve is provided at the connection between the second connecting pipe and the L-shaped pipe. And communicating components are provided at the tops of the first connecting pipe and the second connecting pipe. The main pump body, the second drain valve, the second valve, the first valve, the first drain valve and the communicating components are all connected to an external control box. When the main pump body is working normally, the first valve and the second valve are closed, and the first drain valve and the second drain valve are opened; when the main pump body stops, the first drain valve and the second drain valve are closed, and the first valve, the second valve and the communicating components are opened.

[0007] As a further optimization or improvement of this solution.

[0008] Both of the two communicating components include through holes, electric telescopic rods and pistons. The two through holes are respectively opened on the first connecting pipe and the second connecting pipe. The two pistons are respectively slidably installed in the first connecting pipe and the second connecting pipe. The two electric telescopic rods are respectively fixedly installed on the tops of the first connecting pipe and the second connecting pipe. And the movable ends of the electric telescopic rods are connected to the pistons. The electric telescopic rods are connected to the external control box.

[0009] As a further optimization or improvement of this solution.

[0010] A solenoid valve is provided at the connection between the liquid inlet end of the main pump body and the U-shaped pipe. The solenoid valve is connected to the external control box. A branch component is provided on the first connecting pipe. A water level monitoring module is provided on the first connecting pipe. The water level monitoring module, the branch component and the solenoid valve are all connected to the external control box.

[0011] As a further optimization or improvement of this solution.

[0012] The branch component includes an emergency pump body and a delivery pipe. The liquid inlet end of the emergency pump body is connected to the first connecting pipe. One end of the delivery pipe is connected to the liquid outlet end of the emergency pump body. The other end of the delivery pipe is connected to the receiving device.

[0013] As a further optimization or improvement of this solution.

[0014] The horizontal height of the water level monitoring module is lower than the horizontal height of the through hole, and the horizontal height of the water level monitoring module is higher than the horizontal height of the connection between the emergency pump body and the first connecting pipe.

[0015] The beneficial effects of the present utility model:

[0016] 1. When the main pump body fails and stops operating, the external control box will immediately close the first drain valve and the second drain valve, and open the first valve, the second valve, and the connecting component, so that the first connecting pipe and the second connecting pipe are connected to the outside. According to the principle of communicating vessels, the high-temperature condensate remaining in the pipeline of the main pump body will flow into the U-shaped pipe and the L-shaped pipe below it, and the high-temperature condensate will rush into the first connecting pipe and the second connecting pipe. Eventually, the liquid levels in the first connecting pipe, the second connecting pipe, the U-shaped pipe, and the L-shaped pipe will be level, thereby discharging the high-temperature condensate remaining in the pipeline of the main pump body, preventing the high-temperature condensate from being unable to be discharged from the pipeline of the main pump body, continuing to cause thermal damage to the pipeline, and exacerbating the damage to the main pump body. Moreover, without the interference of high-temperature condensate, it facilitates subsequent maintenance work.

[0017] 2. The telescopic movement of the electric telescopic rod of the present utility model can control the horizontal height of the piston, and further control whether the first connecting pipe and the second connecting pipe are connected to the outside. Moreover, the electric telescopic rod is connected to the external control box and can respond to system operations in a timely manner. When the main pump body stops operating, through simple operations, the first connecting pipe and the second connecting pipe can be immediately connected to the outside to form a communicating vessel, and the high-temperature condensate remaining in the main pump body can be discharged in a timely manner, avoiding further damage to the main pump body.

[0018] 3. The present utility model is also provided with a branch component. After the main pump body stops operating, the U-shaped pipe, the first connecting pipe, and the branch component form a new conveying line, and the high-temperature condensate is continuously conveyed to the receiving device through the branch component. Thus, when the main pump body stops operating, the work of conveying high-temperature condensate is still ensured, avoiding the situation of production process stagnation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further describes the present utility model with reference to the drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0021] Figure 2 It is a schematic cross-sectional structure diagram of the first connecting pipe of the present utility model.

[0022] The labels in the figure are as follows:

[0023] 1. Main pump body; 2. U-shaped pipe; 3. L-shaped pipe; 4. First connecting pipe; 5. Second connecting pipe; 6. First drain valve; 7. First valve; 8. Solenoid valve; 9. Second valve; 10. Second drain valve; 11. Through hole; 12. Electric telescopic rod; 13. Piston; 14. Water level monitoring module; 15. Emergency pump body; 16. Delivery pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] See Figure 1 - Figure 2 , a high-temperature condensate pump protection device, which includes a main pump body 1. The liquid inlet end of the main pump body 1 is connected to a liquid supply device through a U-shaped pipe 2. A first drain valve 6 is provided at the connection between the U-shaped pipe 2 and the liquid supply device. The liquid outlet end of the main pump body 1 is connected to a receiving device through an L-shaped pipe 3. A second drain valve 10 is provided on the L-shaped pipe 3. A first connecting pipe 4 is connected to the U-shaped pipe 2. A first valve 7 is provided at the connection between the first connecting pipe 4 and the U-shaped pipe 2. A second connecting pipe 5 is connected to the L-shaped pipe 3. A second valve 9 is provided at the connection between the second connecting pipe 5 and the L-shaped pipe 3. And communication components are provided at the tops of the first connecting pipe 4 and the second connecting pipe 5. The main pump body 1, the second drain valve 10, the second valve 9, the first valve 7, the first drain valve 6 and the communication components are all connected to an external control box. When the main pump body 1 is working normally, the first valve 7 and the second valve 9 are closed, and the first drain valve 6 and the second drain valve 10 are opened; when the main pump body 1 stops running, the first drain valve 6 and the second drain valve 10 are closed, and the first valve 7, the second valve 9 and the communication components are opened.

[0026] In a specific embodiment, the liquid supply device can be selected from a cooling tower, a storage tank, etc., and other devices capable of providing high-temperature condensate can also be selected. The receiving device can be selected from a heat exchanger, a boiler, etc., and other devices that require high-temperature condensate can also be selected. This embodiment is not specifically limited here; it should be noted that the first drain valve 6, the first valve 7, the second valve 9, the second drain valve 10 and the external control box described in this application are all prior arts, and this application has not improved them. Therefore, it is not necessary to disclose their specific mechanical structures and circuit structures, which does not affect the integrity of this application.

[0027] The working principle of the present utility model is as follows: When it is necessary to transport the high-temperature condensate in the liquid supply device to the receiving device, the first drain valve 6 and the second drain valve 10 are controlled by an external control box to open, and the first valve 7 and the second valve 9 are closed. Under the action of gravity, the high-temperature condensate will enter the main pump body 1 from the U-shaped pipe 2, and then the main pump body 1 is started to generate suction, pumping the high-temperature condensate in the U-shaped pipe 2 into the L-shaped pipe 3 and finally flowing into the receiving device; When the external control box monitors that the main pump body 1 fails and stops, the external control box will immediately close the first drain valve 6 and the second drain valve 10, open the first valve 7, the second valve 9 and the connecting components, so that the first connecting pipe 4 and the second connecting pipe 5 are connected to the outside. At this time, the first connecting pipe 4, the second connecting pipe 5, the U-shaped pipe 2 below the main pump body 1, the L-shaped pipe 3 below the main pump body 1 and the pipeline in the main pump body 1 together form a communicating vessel. According to the principle of the communicating vessel, the high-temperature condensate remaining in the pipeline in the main pump body 1 will flow into the U-shaped pipe 2 and the L-shaped pipe 3 below it, and the high-temperature condensate will pour into the first connecting pipe 4 and the second connecting pipe 5. Finally, the liquid levels in the first connecting pipe 4, the second connecting pipe 5, the U-shaped pipe 2 and the L-shaped pipe 3 will be flush, thereby discharging the high-temperature condensate remaining in the pipeline in the main pump body 1, avoiding the situation that the high-temperature condensate cannot be discharged from the pipeline in the main pump body 1, continuing to cause thermal damage to the pipeline and aggravating the damage to the main pump body 1, and without the interference of the high-temperature condensate, facilitating the subsequent maintenance work.

[0028] Specifically, both of the two connecting components include through holes 11, electric telescopic rods 12 and pistons 13. The two through holes 11 are respectively opened on the first connecting pipe 4 and the second connecting pipe 5. The two pistons 13 are respectively slidably installed in the first connecting pipe 4 and the second connecting pipe 5. The two electric telescopic rods 12 are respectively fixedly installed on the tops of the first connecting pipe 4 and the second connecting pipe 5, and the movable ends of the electric telescopic rods 12 are connected to the pistons 13. The electric telescopic rods 12 are connected to the external control box.

[0029] In a specific embodiment, when the electric telescopic rod 12 extends, the horizontal height of the piston 13 is lower than the horizontal height of the through hole 11. At this time, the first connecting pipe 4 and the second connecting pipe 5 are not connected to the outside. When the electric telescopic rod 12 contracts, the horizontal height of the electric telescopic rod 12 is higher than the horizontal height of the through hole 11. At this time, both the first connecting pipe 4 and the second connecting pipe 5 are connected to the outside space through the through holes 11. And the electric telescopic rod 12 is connected to the external control box and can respond to the system operation in a timely manner. When the main pump body 1 stops, through simple operations, the first connecting pipe 4 and the second connecting pipe 5 can be immediately connected to the outside to form a communicating vessel, and the high-temperature condensate remaining in the main pump body 1 can be discharged in a timely manner, avoiding further damage to the main pump body 1.

[0030] More specifically, a solenoid valve 8 is provided at the liquid inlet end of the main pump body 1 where it is connected to the U-shaped pipe 2. The solenoid valve 8 is connected to an external control box. A branch assembly is provided on the first connecting pipe 4, and a water level monitoring module 14 is provided on the first connecting pipe 4. The water level monitoring module 14, the branch assembly, and the solenoid valve 8 are all connected to the external control box.

[0031] In a specific embodiment, it should be noted that the solenoid valve 8 described in this application is a prior art, and this application has not made any improvements to it. Therefore, it is not necessary to disclose its specific mechanical structure and circuit structure, which does not affect the integrity of this application. After the main pump body 1 stops operating, high-temperature condensate will enter the first connecting pipe 4. When the liquid level reaches the position of the water level monitoring module 14, at this time, the connecting component on the U-shaped pipe 2 and the solenoid valve 8 are controlled to close through the external control box, and the first valve 7 remains in the open state. Then, the first drain valve 6 is opened. At this time, the U-shaped pipe 2, the first connecting pipe 4, and the branch assembly form a new conveying line, so that when the main pump body 1 stops operating, the work of conveying high-temperature condensate can still be ensured.

[0032] Meanwhile, it should be noted that the branch assembly includes an emergency pump body 15 and a conveying pipe 16. The liquid inlet end of the emergency pump body 15 is connected to the first connecting pipe 4, one end of the conveying pipe 16 is connected to the liquid outlet end of the emergency pump body 15, and the other end of the conveying pipe 16 is connected to the receiving device.

[0033] In a specific embodiment, when the branch assembly is working, the high-temperature condensate in the first connecting pipe 4 can be pumped through the emergency pump body 15 and conveyed to the receiving device through the conveying pipe 16, so that when the main pump body 1 stops operating, the continuity of the liquid infusion work can still be realized through the emergency pump body 15, avoiding the stagnation of the production process caused by the stop of the main pump body 1.

[0034] More specifically, the horizontal height of the water level monitoring module 14 is lower than the horizontal height of the through hole 11, and the horizontal height of the water level monitoring module 14 is higher than the horizontal height of the connection between the emergency pump body 15 and the first connecting pipe 4.

[0035] In a specific embodiment, it should be noted that the water level monitoring module 14 described in this application is a prior art, and this application has not made any improvements to it. Therefore, it is not necessary to disclose its specific mechanical structure and circuit structure, which does not affect the integrity of this application. The position of the water level monitoring module 14 can ensure that the liquid level of the high-temperature condensate completely exceeds the liquid inlet end of the emergency pump body 15, ensuring that the emergency pump body 15 can pump out the high-temperature condensate, and at the same time ensuring that the external control box can timely close the connecting component on the U-shaped pipe 2 to prevent the high-temperature condensate from discharging from the through hole 11.

[0036] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present utility model claimed.

Claims

1. A high-temperature condensate pump protection device, characterized in that: It includes a main pump body (1). The liquid inlet end of the main pump body (1) is connected to a liquid supply device through a U-shaped pipe (2). A first drain valve (6) is provided at the connection between the U-shaped pipe (2) and the liquid supply device. The liquid outlet end of the main pump body (1) is connected to a receiving device through an L-shaped pipe (3). A second drain valve (10) is provided on the L-shaped pipe (3). A first connecting pipe (4) is connected to the U-shaped pipe (2). A first valve (7) is provided at the connection between the first connecting pipe (4) and the U-shaped pipe (2). A second connecting pipe (5) is connected to the L-shaped pipe (3). A second valve (9) is provided at the connection between the second connecting pipe (5) and the L-shaped pipe (3). And connecting components are provided at the tops of the first connecting pipe (4) and the second connecting pipe (5). The main pump body (1), the second drain valve (10), the second valve (9), the first valve (7), the first drain valve (6) and the connecting components are all connected to an external control box. When the main pump body (1) is working normally, the first valve (7) and the second valve (9) are closed, and the first drain valve (6) and the second drain valve (10) are open; when the main pump body (1) stops, the first drain valve (6) and the second drain valve (10) are closed, and the first valve (7), the second valve (9) and the connecting components are open.

2. The high-temperature condensate pump protection device according to claim 1, characterized in that: Both of the two connecting components include a through hole (11), an electric telescopic rod (12) and a piston (13). The two through holes (11) are respectively opened on the first connecting pipe (4) and the second connecting pipe (5). The two pistons (13) are respectively slidably installed in the first connecting pipe (4) and the second connecting pipe (5). The two electric telescopic rods (12) are respectively fixedly installed on the tops of the first connecting pipe (4) and the second connecting pipe (5), and the movable ends of the electric telescopic rods (12) are connected to the pistons (13). The electric telescopic rods (12) are connected to the external control box.

3. The high-temperature condensate pump protection device according to claim 2, wherein: A solenoid valve (8) is provided at the connection between the liquid inlet end of the main pump body (1) and the U-shaped pipe (2). The solenoid valve (8) is connected to the external control box. A branch component is provided on the first connecting pipe (4). A water level monitoring module (14) is provided on the first connecting pipe (4). The water level monitoring module (14), the branch component and the solenoid valve (8) are all connected to the external control box.

4. The high-temperature condensate pump protection device according to claim 3, wherein: The branch component includes an emergency pump body (15) and a delivery pipe (16). The liquid inlet end of the emergency pump body (15) is connected to the first connecting pipe (4). One end of the delivery pipe (16) is connected to the liquid outlet end of the emergency pump body (15), and the other end of the delivery pipe (16) is connected to the receiving device.

5. The protection device for a high-temperature condensate pump according to claim 4, characterized in that: The horizontal height of the water level monitoring module (14) is lower than the horizontal height of the through hole (11), and the horizontal height of the water level monitoring module (14) is higher than the horizontal height of the connection between the emergency pump body (15) and the first connecting pipe (4).

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