Condensate water recovery device

Abstract

The utility model belongs to the technical field of condensate water recovery, and discloses a condensate water recovery device which comprises a recovery pipe, a first drain valve, an exhaust pipe, a recovery tank and a plurality of pressure release valves, the first drain valve is arranged at the inlet end of the recovery pipe and used for guiding condensate water into the recovery pipe, and when the condensate water enters the first drain valve, the valve is opened, and the condensate water is guided into the recovery pipe. When steam enters the first drain valve, the valve is closed, and the steam is prevented from entering the recovery pipe; the multiple pressure release valves are sequentially arranged on the recovery pipe in the flowing direction of the condensate water, the pressure release set values of the pressure release valves are sequentially reduced in the flowing direction of the condensate water, and each pressure release valve communicates with the exhaust pipe so as to release steam generated in the conveying process of the condensate water. The pressure value in the recycling pipe in the flowing direction of the condensate water is gradually reduced, so that the impact of the high-temperature condensate water and attached steam on equipment is avoided, and the water attack phenomenon is prevented; and the recovery tank is arranged at the outlet end of the recovery pipe and is used for collecting the condensate water subjected to pressure relief.

Description

Technical Field

[0001] This utility model relates to the field of condensate recovery technology, and in particular to a condensate recovery device. Background Technology

[0002] Steam produces a large amount of condensate after being used in condensation equipment. Condensate has advantages such as high calorific value and good water quality, and can be widely used in scenarios such as heat exchange and heating end water supply, and boiler steam production water. However, in practical applications, due to insufficient steam condensation, steam trap malfunction, or internal leakage of bypass valves, the temperature of the recovered condensate is easily too high, and steam may be present in the condensate. Both steam and high-temperature condensate can easily impact the equipment, leading to water hammer in the condensate recovery system. Water hammer can easily damage the equipment and also poses a significant safety hazard.

[0003] Therefore, there is an urgent need to develop a condensate recovery device to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a condensate recovery device to avoid the impact of high-temperature condensate and accompanying steam on the equipment, prevent water hammer, protect the device safety, extend the service life of the device, and eliminate safety hazards.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A condensate recovery device includes a recovery pipe, a first drain valve, an exhaust pipe, a recovery tank, and multiple pressure relief valves. The first drain valve is located at the inlet end of the recovery pipe and is used to guide condensate into the recovery pipe. The multiple pressure relief valves are sequentially arranged on the recovery pipe along the flow direction of the condensate, and the pressure release setpoint of each pressure relief valve decreases sequentially along the flow direction of the condensate. Each pressure relief valve is connected to the exhaust pipe to release steam. The recovery tank is located at the outlet end of the recovery pipe and is used to collect the condensate after pressure relief.

[0007] Furthermore, each of the pressure relief valves is located at the top of the recovery pipe.

[0008] Furthermore, the pressure release settings of the multiple pressure relief valves decrease in a stepwise manner along the flow direction of the condensate, and the pressure difference between adjacent pressure relief valves ranges from 0.1 MPa to 5 MPa.

[0009] Furthermore, the first steam trap is a float-type steam trap.

[0010] Furthermore, the pressure relief valve is a diaphragm type pressure relief valve.

[0011] Furthermore, the condensate recovery device also includes a pressure detection element and a drain valve. The pressure detection element is used to detect the pressure inside the recovery tank, and the drain valve is located at the outlet of the recovery tank and is communicatively connected to the pressure detection element.

[0012] Furthermore, the drain valve is a solenoid valve.

[0013] Furthermore, the pressure detection element is located on the top of the recovery tank.

[0014] Furthermore, the condensate recovery device also includes a plurality of second drain valves. The recovery pipe between adjacent pressure relief valves may optionally be provided with a second drain valve. Each second drain valve is used to connect to the condensate source of the corresponding pressure segment and can introduce condensate into the recovery pipe. The pressure range of the corresponding pressure segment is a closed interval between the pressure release set values ​​of the corresponding adjacent pressure relief valves.

[0015] Furthermore, the second steam trap is a float-type steam trap.

[0016] The beneficial effects of this utility model are:

[0017] This invention provides a condensate recovery device, including a recovery pipe, a first steam trap, an exhaust pipe, a recovery tank, and multiple pressure relief valves. The first steam trap is located at the inlet end of the recovery pipe, guiding condensate into the recovery pipe. When condensate enters the first steam trap, the valve opens, allowing condensate to flow into the recovery pipe. When steam enters the first steam trap, the valve closes, initially preventing steam from entering the recovery pipe. Multiple pressure relief valves are sequentially arranged on the recovery pipe along the condensate flow direction, with each valve's pressure release setting decreasing sequentially along the flow direction. Each pressure relief valve is connected to the exhaust pipe to release steam generated during condensate transport, gradually reducing the pressure within the recovery pipe along the condensate flow direction. The recovery tank is located at the outlet end of the recovery pipe to collect the depressurized condensate for recycling. By gradually releasing steam through multiple pressure relief valves, the condensate temperature gradually decreases, preventing the impact of high-temperature condensate and accompanying steam on the equipment, preventing water hammer, protecting the safety of the condensate recovery device, extending its service life, and eliminating safety hazards. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the condensate recovery device of this utility model.

[0019] In the picture:

[0020] 1. Recovery pipe; 2. First drain valve; 3. Exhaust pipe; 4. Recovery tank; 5. Pressure relief valve; 6. Pressure detection device; 7. Drain valve; 8. Second drain valve. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0022] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0025] like Figure 1As shown, this embodiment provides a condensate recovery device, including a recovery pipe 1, a first steam trap 2, an exhaust pipe 3, a recovery tank 4, and multiple pressure relief valves 5. The inlet end of the recovery pipe 1 is provided with the first steam trap 2, which is used to introduce condensate into the recovery pipe 1. When condensate enters the first steam trap 2, the valve opens, introducing condensate into the recovery pipe 1. When steam enters the first steam trap 2, the valve closes, initially preventing steam from entering the recovery pipe 1. Multiple pressure relief valves 5 are sequentially arranged on the recovery pipe 1 along the flow direction of condensate, and the pressure release setting value of each pressure relief valve 5 decreases sequentially along the flow direction of condensate. Each pressure relief valve 5 is connected to the exhaust pipe 3 to release the steam generated during the condensate transportation process, so that the pressure value in the recovery pipe 1 along the flow direction of condensate gradually decreases. The recovery tank 4 is provided at the outlet end of the recovery pipe 1 to collect the condensate after pressure relief, so as to facilitate the recycling of condensate. By gradually releasing steam through multiple pressure relief valves 5, the temperature of the condensate can be gradually reduced, avoiding the impact of high-temperature condensate and accompanying steam on the equipment, preventing water hammer, protecting the safety of the condensate recovery device, extending the service life of the condensate recovery device, and eliminating safety hazards.

[0026] In addition, the pressure release setting value of each pressure relief valve 5 is successively reduced along the flow direction of condensate, so that the pressure in the recovery pipe 1 gradually decreases along the flow direction of condensate, forming a pressure difference, which can reduce the back pressure of the first steam trap 2, which is conducive to the drainage of the first steam trap 2 and the recycling of condensate, facilitates the smooth drainage of steam equipment, reduces the functional failure of steam equipment caused by poor drainage, and extends the service life of steam equipment.

[0027] Furthermore, each pressure relief valve 5 is located at the top of the recovery pipe 1. Utilizing the natural upward accumulation of steam, the pressure relief valve 5 can more quickly and accurately sense and release the steam in the recovery pipe 1, greatly improving steam discharge efficiency and preventing steam from accumulating in the pipe and affecting the normal flow of condensate. This further ensures the high efficiency and stability of the condensate recovery process. At the same time, it optimizes the spatial layout of the entire device, making the structure more compact and reasonable, reducing potential malfunctions caused by improper placement of the pressure relief valve 5, and providing strong support for the smooth operation of industrial production.

[0028] In this embodiment, the pressure release settings of multiple pressure relief valves 5 decrease in a stepwise manner along the flow direction of condensate, and the pressure difference between adjacent pressure relief valves 5 ranges from 0.1 MPa to 5 MPa. By making the pressure release settings of the pressure relief valves 5 decrease in a stepwise manner, the pressure difference in the recovery pipe 1 is precisely controlled, further improving the flow stability of condensate in the recovery pipe 1 and effectively improving the condensate recovery efficiency. Exemplarily, the pressure difference between adjacent pressure relief valves 5 can be, but is not limited to, 0.1 MPa, 2 MPa, 3.5 MPa, or 5 MPa, and is not limited here.

[0029] Specifically, the first steam trap 2 is a float-type steam trap, which operates using the buoyancy of a float. When condensate enters the valve, the float rises, opening the valve to discharge the condensate; when steam enters, the float descends, closing the valve. The float-type steam trap can continuously drain water, has high drainage efficiency, and can meet the discharge requirements of large flows of condensate. Optionally, the first steam trap 2 may include, but is not limited to, a thermostatic steam trap, a thermodynamic steam trap, or a pulse-type steam trap; no limitation is made here.

[0030] Optionally, the pressure relief valve 5 is a diaphragm-type pressure relief valve, which directly drives the valve core to open or close by sensing pressure changes through an elastic diaphragm. It has the advantages of high sensitivity, fast response, corrosion resistance, and low cost. In other embodiments, the pressure relief valve 5 may include, but is not limited to, a spring-loaded pressure relief valve or a pilot-operated pressure relief valve, which is not limited here.

[0031] Furthermore, the condensate recovery device also includes a pressure detection element 6 and a drain valve 7. The pressure detection element 6 is used to detect the pressure inside the recovery tank 4. The drain valve 7 is located at the outlet of the recovery tank 4 and is used to discharge condensate, steam, or a mixture of steam and water. The drain valve 7 is communicatively connected to the pressure detection element 6. The pressure detection element 6 monitors the pressure inside the recovery tank 4 in real time. When the pressure inside the tank is greater than the set value, the drain valve 7 receives the signal from the pressure detection element 6 and automatically opens to discharge the condensate, steam, or mixture of steam and water, thereby ensuring a low-pressure environment inside the recovery tank 4 and ensuring that the pressure inside the recovery tank 4 is lower than the pressure inside the condensate recovery pipe 1, so as to facilitate the smooth recovery of condensate.

[0032] In this embodiment, the drain valve 7 is a solenoid valve, which has the advantages of fast response speed, high control accuracy, and suitability for complex working conditions of steam-water mixtures, ensuring the smooth operation of the condensate recovery device. Optionally, the drain valve 7 may include, but is not limited to, a pneumatic automatic drain valve, an electronic automatic drain valve, or a pressure automatic drain valve, and is not limited here.

[0033] It is easy to understand that the pressure detection element 6 is set to a value lower than the pressure release setting value of the pressure relief valve 5 closest to the recovery tank 4, thereby ensuring that the pressure inside the recovery tank 4 is lower than the pressure inside the condensate recovery pipe 1.

[0034] Furthermore, the pressure detection element 6 is located at the top of the recovery tank 4. Utilizing the characteristic of steam rising upwards, the pressure detection element 6 can more quickly and accurately sense the steam pressure inside the recovery tank 4, providing the device with real-time and accurate pressure data, which facilitates timely adjustment by the drain valve 7. This arrangement can also effectively prevent condensate from corroding the pressure detection element 6, extend its service life, and ensure the stability and reliability of the measurement.

[0035] In this embodiment, the pressure detection element 6 is a pressure sensor, which has high measurement accuracy and stability and can continuously monitor the pressure inside the recovery tank 4 in real time. Optionally, the pressure detection element 6 may include, but is not limited to, a pressure switch, a diaphragm-sealed pressure gauge, or a fiber optic pressure sensor, and is not limited thereto.

[0036] In some optional embodiments, the condensate recovery device further includes multiple second drain valves 8. The recovery pipe 1 between adjacent pressure relief valves 5 may optionally be equipped with a second drain valve 8. Each second drain valve 8 is used to connect to a condensate source corresponding to a pressure segment, enabling the introduction of condensate into the recovery pipe 1. Depending on the condensate recovery requirements, second drain valves 8 may be selectively installed on the recovery pipe 1 between adjacent pressure relief valves 5. The pressure range of the corresponding pressure segment is the closed interval between the pressure release set values ​​of the corresponding adjacent pressure relief valves 5. Through the coordinated design of the first drain valve 2, the second drain valve 8, and the pressure relief valve 5, compatible input and safe recovery of condensate from multiple pressure segments can be achieved, avoiding the impact of pressure differences or pressure fluctuations on condensate recovery. Furthermore, it can prevent condensate backflow and improve condensate recovery efficiency. Simultaneously, defining the pressure range according to the set values ​​of adjacent pressure relief valves 5 and introducing condensate in an orderly manner can reduce pressure fluctuations, reduce damage to equipment, extend equipment life, ensure a stable recovery process, enhance the adaptability of the device, flexibly adapt to different production conditions, and meet diverse recovery needs.

[0037] Similarly, the second steam trap 8 is a float-type steam trap, which can continuously drain water with high drainage efficiency and can meet the discharge requirements of large flow rates of condensate, and will not be elaborated further here. Optionally, the second steam trap 8 may include, but is not limited to, a thermostatic steam trap, a thermodynamic steam trap, or a pulse-type steam trap, and is not limited here.

[0038] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A condensate recovery device, characterized in that, The system includes a recovery pipe (1), a first steam trap (2), an exhaust pipe (3), a recovery tank (4), and multiple pressure relief valves (5). The first steam trap (2) is provided at the inlet end of the recovery pipe (1) and is used to introduce condensate into the recovery pipe (1). Multiple pressure relief valves (5) are arranged sequentially on the recovery pipe (1) along the flow direction of the condensate, and the pressure release setting value of each pressure relief valve (5) decreases sequentially along the flow direction of the condensate. Each pressure relief valve (5) is connected to the exhaust pipe (3) to release steam. The recovery tank (4) is located at the outlet end of the recovery pipe (1) and is used to collect the condensate after depressurization.

2. The condensate recovery device according to claim 1, characterized in that, Each of the pressure relief valves (5) is located at the top of the recovery pipe (1).

3. The condensate recovery device according to claim 1, characterized in that, The pressure release settings of the multiple pressure relief valves (5) decrease in a stepwise manner along the flow direction of the condensate, and the pressure difference between adjacent pressure relief valves (5) ranges from 0.1 MPa to 5 MPa.

4. The condensate recovery device according to claim 1, characterized in that, The first drain valve (2) is a float-type drain valve.

5. The condensate recovery device according to claim 1, characterized in that, The pressure relief valve (5) is a diaphragm type pressure relief valve.

6. The condensate recovery device according to claim 1, characterized in that, The condensate recovery device also includes a pressure detection element (6) and a drain valve (7). The pressure detection element (6) is used to detect the pressure inside the recovery tank (4). The drain valve (7) is located at the outlet of the recovery tank (4) and is communicatively connected to the pressure detection element (6).

7. The condensate recovery device according to claim 6, characterized in that, The drain valve (7) is a solenoid valve.

8. The condensate recovery device according to claim 6, characterized in that, The pressure detection element (6) is located on the top of the recovery tank (4).

9. The condensate recovery device according to any one of claims 1 to 8, characterized in that, The condensate recovery device also includes a plurality of second drain valves (8). The recovery pipe (1) between adjacent pressure relief valves (5) may be provided with second drain valves (8). Each second drain valve (8) is used to connect to the condensate source of the corresponding pressure segment and can introduce condensate into the recovery pipe (1). The pressure range of the corresponding pressure segment is the closed interval between the pressure release set values ​​of the corresponding adjacent pressure relief valves (5).

10. The condensate recovery device according to claim 9, characterized in that, The second drain valve (8) is a float-type drain valve.

Images