Condensate discharging device for flue gas circulating fan

Abstract

The utility model relates to the field of condensate water discharge of flue gas circulating fans, in particular to a condensate discharge device for a flue gas circulating fan, which comprises a condensate discharge pipeline, the condensate discharge pipeline is communicated with at least one condensate discharge branch, and the condensate discharge branch is used for being communicated with a condensate discharge port of a fan; a connecting piece is arranged at the end of the condensate drainage pipeline and used for being connected with a condensate drainage floor drain in a matched mode. The condensate drain branch is provided with a condensate drain valve and a bypass branch, the condensate drain valve is located on the upstream of the bypass branch, and the bypass branch is provided with a bypass valve; the condensate draining branch and the condensate draining pipeline can prevent condensate water of the flue gas recirculation fan from being directly drained to the ground, and environment pollution is avoided; when the condensate discharging pipeline is blocked, condensate water can be discharged from the bypass branch, the condensate water is prevented from being gathered in the flue gas circulating fan for a long time, and therefore the impeller of the fan is prevented from being corroded; the connecting piece is used for being connected with the condensate drainage floor drain in a matched mode, so that the condensate drainage pipeline can be fixed to the condensate drainage floor drain through the connecting piece, and the condensate drainage pipeline is prevented from being disengaged from the condensate drainage floor drain.

Description

Technical Field

[0001] The utility model relates to the field of condensate water discharge of a flue gas recirculation fan, and particularly relates to a condensate water discharging device for a flue gas recirculation fan. Background Art

[0002] The main function of the flue gas recirculation fan is to extract a part of low-temperature flue gas from the flue ducts such as the economizer and send it into the furnace for flue gas recirculation to adjust the operation state of the boiler. During the operation of the flue gas recirculation fan, condensate water will accumulate inside the flue gas recirculation fan. The condensate water contains flue gas components, and long-term accumulation will cause corrosion of the fan impeller. Therefore, it is necessary to regularly discharge the condensate water of the flue gas recirculation fan.

[0003] However, currently, it is directly discharged to the ground through the condensate discharge port of the flue gas recirculation fan. The condensate water flows on the ground and converges to the condensate drain floor drain for discharge. The condensate water will cause environmental pollution during the flowing process on the ground; if the condensate water is discharged through a pipeline, since the condensate water contains flue gas components, it is easy to block the pipeline. When the pipeline is blocked, it is not easy to detect and the pipeline needs to be disassembled to discharge the condensate water in the flue gas recirculation fan. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiency that the polluting condensate water of the flue gas recirculation fan in the prior art is directly discharged to the ground, causing environmental pollution, and provide a condensate water discharging device for a flue gas recirculation fan.

[0005] The utility model provides a condensate water discharging device for a flue gas recirculation fan, including

[0006] a condensate discharge pipeline, the condensate discharge pipeline is connected to at least one condensate discharge branch, and the condensate discharge branch is used to be connected to the fan condensate discharge port; a connector is arranged at the end of the condensate discharge pipeline, and the connector is used to be adaptively connected to the condensate drain floor drain;

[0007] the condensate discharge branch is provided with a condensate discharge valve and a bypass branch, the condensate discharge valve is located upstream of the bypass branch, and the bypass branch is provided with a bypass valve.

[0008] A condensate drainage device for a flue gas recirculation fan of the present utility model. The condensate drainage branch is communicated with the fan condensate drainage port of the flue gas recirculation fan. When multiple condensate drainage branches are provided, the condensed water discharged from multiple flue gas recirculation fans can be collected into the condensate drainage pipeline for discharge, avoiding excessive pipeline laying. The condensed water is transported through the condensate drainage pipeline and the condensate drainage branch, avoiding discharging the condensed water to the ground and avoiding environmental pollution caused by the condensed water. A condensate drainage valve is provided on the condensate drainage branch, and the operator can drain condensate as needed. A bypass branch is provided downstream of the condensate drainage valve. When the condensate drainage pipeline is blocked, the condensed water can be discharged in time through the bypass branch, thereby maintaining the normal operation of the flue gas recirculation fan and avoiding corrosion of the impeller of the flue gas recirculation fan.

[0009] Preferably, the condensate drainage branch is a Z-shaped pipeline. The condensate drainage branch includes a horizontal section, a vertical section and a connecting section. One end of the vertical section is communicated with the horizontal section, and the other end is communicated with the connecting section. The horizontal section is used to communicate with the fan condensate drainage port, and the connecting section is communicated with the condensate drainage pipeline. The condensate drainage valve and the bypass branch are both provided on the horizontal section.

[0010] The horizontal section, the vertical section and the connecting section are connected to form a Z-shaped pipe section. Through the setting of the vertical section, the horizontal section is higher than the connecting section. The horizontal section is horizontally arranged, which is convenient for the condensed water to be discharged. The vertical section is vertically arranged, so that the vertical section can support the horizontal section and make the horizontal section keep horizontal. The connecting section is arranged attached to the ground, so that the condensed water in the horizontal section flows into the condensate drainage floor drain along the trend of the ground. During normal condensate drainage, the bypass branch is closed. When the condensate drainage pipeline is blocked, the bypass branch is opened, so that the condensed water is quickly discharged through the bypass branch, thereby avoiding the long-term accumulation of condensed water in the flue gas recirculation fan and avoiding corrosion of the fan impeller.

[0011] Preferably, the bypass branch is vertically arranged and is communicated with the bottom of the horizontal section.

[0012] By communicating the bypass branch with the bottom of the horizontal section, under the action of gravity, the condensed water is more likely to enter the bypass branch. The bypass branch is vertically arranged, which is convenient for the condensed water to be discharged.

[0013] Preferably, the horizontal section is provided with a through observation port, and a transparent structural member is nested in the observation port.

[0014] An observation port is arranged on the side wall of the horizontal pipe section. The observation port penetrates the side wall of the horizontal pipe section. The observation port is sealed by a transparent structural member. The operator can judge the liquid state in the horizontal pipe section through the observation port, so as to judge whether the condensed water in the flue gas recirculation fan is drained out. The operator can judge whether the condensate drainage pipeline is blocked through the observation port and from the discharge state of the condensed water in the observation port. If the pipeline is blocked, the condensed water can be observed through the observation port for a long time, and the flow rate of the condensed water is slow or does not flow.

[0015] Preferably, the observation port includes a strip-shaped through hole.

[0016] The strip-shaped through hole has a larger observation range and is more convenient for observation.

[0017] Preferably, it further includes a temporary storage container, and the temporary storage container is detachably connected to the bypass valve.

[0018] After the temporary storage container is provided, the condensed water discharged from the bypass valve enters the temporary storage container for storage, avoiding the ground being polluted by the condensed water.

[0019] Preferably, the temporary storage container is provided with a receiving cavity and an opening, the receiving cavity is communicated with the opening, and the opening can be communicated with the bypass valve.

[0020] The condensed water enters the receiving cavity through the opening for storage. In some embodiments, a strip-shaped observation window is provided on the temporary storage container, and the liquid level height in the receiving cavity can be observed through the strip-shaped observation window to avoid the overflow of the condensed water.

[0021] Preferably, the condensate drainage pipeline has a bent section, the bent section extends into the condensate drainage floor drain, and the connecting piece is arranged on the bent section.

[0022] A bent section is provided at one end of the condensate drainage pipeline where the condensed water is discharged. The bent section is bent at a right angle, and the bending direction is towards the ground. By inserting the bent section into the condensate drainage floor drain; setting the bent section can make the condensate drainage pipeline easier to extend into the condensate drainage floor drain, avoid the condensate drainage pipeline being arched due to force, and ensure the smooth discharge of the condensed water from the condensate drainage pipeline.

[0023] Preferably, the connecting piece includes a rubber structural member, the rubber structural member is arranged on the outer wall of the bent section, and the rubber structural member abuts against the side wall of the condensate drainage floor drain.

[0024] The rubber structural member is a columnar structural member, and the condensate drainage pipeline passes through the middle of the rubber structural member. The rubber structural member abuts against the side wall of the condensate drainage floor drain, so that the rubber structural member seals the gap between the condensate drainage floor drain and the bent member, avoiding the overflow of the condensed water from the condensate drainage floor drain to the ground.

[0025] Preferably, a pressure gauge is provided on the condensate drainage branch, and the pressure gauge is located between the condensate drainage valve and the bypass branch.

[0026] The clogging of the condensate drainage pipeline can be accurately judged through the reading of the pressure gauge; if the pressure gauge continuously maintains a high pressure during the condensate drainage process, it can be judged that the condensate drainage pipeline is clogged.

[0027] Compared with the prior art, the beneficial effects of the present utility model are:

[0028] 1. A condensate drainage device for a flue gas recirculation fan of the present utility model. The condensate drainage branch is communicated with the fan condensate drainage port of the flue gas recirculation fan. When multiple condensate drainage branches are provided, the condensate water discharged from multiple flue gas recirculation fans can be collected into the condensate drainage pipeline for discharge, avoiding excessive pipeline laying. The condensate water is transported through the condensate drainage pipeline and the condensate drainage branch, avoiding discharging the condensate water to the ground and avoiding environmental pollution caused by the condensate water. A condensate drainage valve is provided on the condensate drainage branch, and the operator can drain condensate as needed. A bypass branch is provided downstream of the condensate drainage valve. When the condensate drainage pipeline is blocked, the condensate water can be discharged in time through the bypass branch, thereby maintaining the normal operation of the flue gas recirculation fan and avoiding corrosion of the impeller of the flue gas recirculation fan.

[0029] 2. The present utility model provides a condensate drainage device for a flue gas recirculation fan. Through the condensate drainage branch and the condensate drainage pipeline, it is possible to avoid the direct discharge of the condensate water of the flue gas recirculation fan to the ground and avoid environmental pollution. When the condensate drainage pipeline is blocked, the condensate water can be discharged from the bypass branch, avoiding the long-term accumulation of condensate water inside the flue gas recirculation fan, thereby avoiding corrosion of the fan impeller. The connecting piece is used for adaptively connecting with the condensate drainage floor drain, enabling the connecting piece to fix the condensate drainage pipeline to the condensate drainage floor drain and avoiding the detachment of the condensate drainage pipeline from the condensate drainage floor drain, having good economic value and practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic structural diagram of a condensate drainage device for a flue gas recirculation fan of the present utility model.

[0031] Figure 2 It is a schematic structural diagram of the condensate drainage branch of the present utility model;

[0032] Figure 3 It is a schematic cross-sectional structure diagram of the temporary storage container of the present utility model.

[0033] Reference numerals in the drawings:

[0034] 1 - condensate drainage pipeline, 2 - condensate drainage branch, 21 - horizontal section, 22 - vertical section, 23 - connecting section, 24 - observation port, 25 - pressure gauge, 3 - connecting piece, 4 - condensate drainage valve, 5 - bypass branch, 6 - bypass valve, 7 - bending section, 8 - temporary storage container, 81 - accommodation cavity, 82 - opening, 83 - pressure relief hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The following further describes the present utility model in detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present utility model to the following embodiments. All technologies implemented based on the content of the present utility model belong to the scope of the present utility model.

[0036] Unless otherwise specified, in the description of the specific embodiments of the present utility model, the expression terms indicating the orientation or positional relationship, such as "upper", "lower", "left", "right", "center", "inner", "outer", etc., are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product / device / installation of this utility model is commonly used. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present utility model or simplifying the description in the specific embodiments, facilitating technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, it should not be construed as a limitation to the present utility model.

[0037] In addition, if terms such as "horizontal", "vertical", "hanging", "parallel" appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but it can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but it can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in the directions of "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present utility model.

[0038] In addition, the expressions such as "first", "second", "third", etc. in the terms are only used to distinguish the description of the same or similar components, and should not be understood as emphasizing or implying the relative importance of specific components.

[0039] In addition, in the description of the embodiments of the present utility model, "several", "multiple", "a plurality of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even can be a situation exceeding 9.

[0040] In addition, in the description of the technical solution of the present utility model, unless otherwise clearly specified / defined / restricted, where terms such as "set", "installed", "connected", "linked", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, screw connection, etc. This connection can be a mechanical connection, an electrical connection or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements.

[0041] Example 1

[0042] As shown Figures 1 - 3 in the figure, a condensate drainage device for a flue gas circulation fan includes

[0043] a condensate drainage pipeline 1, the condensate drainage pipeline 1 is connected to at least one condensate drainage branch 2, and the condensate drainage branch 2 is used to communicate with the fan condensate drainage port; a connector 3 is provided at the end of the condensate drainage pipeline 1, and the connector 3 is used to be adaptively connected to a condensate drainage floor drain;

[0044] the condensate drainage branch 2 is provided with a condensate drainage valve 4 and a bypass branch 5, the condensate drainage valve 4 is located upstream of the bypass branch 5, and the bypass branch 5 is provided with a bypass valve 6.

[0045] Two condensate drainage branches 2 are respectively connected to the fan condensate drainage ports of the flue gas circulation fans, so that the condensed water discharged from the two flue gas circulation fans can be collected into the condensate drainage pipeline 1 for discharge, avoiding excessive pipeline laying; the condensed water is transported through the condensate drainage pipeline 1 and the condensate drainage branch 2, avoiding discharging the condensed water to the ground and avoiding environmental pollution caused by the condensed water; a condensate drainage valve 4 is provided on the condensate drainage branch 2, and the operator can drain condensate as needed; a bypass branch 5 is provided downstream of the condensate drainage valve 4, when the condensate drainage pipeline 1 is blocked, the condensed water can be discharged in time through the bypass branch 5, so as to keep the normal operation of the flue gas recirculation fan and avoid corrosion of the impeller of the flue gas recirculation fan.

[0046] In one or several embodiments, the condensate drainage branch 2 is a Z-shaped pipeline composed of a horizontal section 21, a vertical section 22 and a connecting section 23. One end of the vertical section 22 is connected to the horizontal section 21 and the other end is connected to the connecting section 23. The horizontal section 21 is used to communicate with the fan condensate drainage port, and the connecting section 23 is connected to the condensate drainage pipeline 1; when it is necessary to drain the condensed water discharged from the flue gas recirculation fan, by opening the condensate drainage valve 4 and closing the bypass valve 6, the condensed water passes through the horizontal section 21 - vertical section 22 - connecting section 23 in sequence and then enters the condensate drainage pipeline 1, and the condensed water is discharged from the condensate drainage pipeline 1 to the condensate drainage floor drain; both the condensate drainage valve 4 and the bypass branch 5 are arranged on the horizontal section 21 for easy operation; the condensate drainage valve 4 is located upstream of the bypass branch 5, when both the condensate drainage valve 4 and the bypass branch 5 are opened, the condensed water can be discharged from the bypass branch 5.

[0047] In an optional embodiment, the bypass branch 5 is vertically arranged, and the bypass branch 5 is connected to the bottom of the horizontal section 21, so that the condensed water can more easily enter the bypass branch 5 and be discharged under the action of gravity.

[0048] In an optional embodiment, the horizontal section 21 is provided with an observation port 24, the observation port 24 penetrates through the side wall of the horizontal section 21, and a transparent structural member is nested in the observation port 24, which is convenient for the operator to observe the liquid flow condition in the horizontal section 21.

[0049] In one or more embodiments, a condensate drainage device for a flue gas recirculation fan further includes a temporary storage container 8, and the temporary storage container 8 is detachably connected to the bypass valve 6; by providing the temporary storage container 8, the condensate discharged from the bypass valve 6 can be stored in the temporary storage container 8, preventing the condensate from being directly discharged to the ground.

[0050] In an alternative embodiment, the temporary storage container 8 is provided with a receiving cavity 81 and an opening 82. The opening 82 is adapted to communicate with the bypass valve 6, and the receiving cavity 81 communicates with the opening 82, so that the condensate discharged from the bypass valve 6 enters the receiving cavity 81 through the opening 82 for temporary storage; to make the pressure inside and outside the temporary storage container 8 the same, a pressure relief hole 83 is also provided at the top of the temporary storage container 8, which communicates with the receiving cavity 81, enabling the condensate to more easily enter the receiving cavity 81.

[0051] In one or more embodiments, the condensate drainage pipeline 1 has a bent section 7, and the bent section 7 is bent at a right angle to the condensate drainage pipeline 1. The bent section 7 extends into the condensate drainage floor drain, so that the condensate drainage pipeline 1 is arranged along the ground, preventing the middle part of the condensate drainage pipeline 1 from arching and avoiding condensate leakage. The connecting member 3 is arranged on the bent section 7, and when the bent section 7 is inserted into the condensate drainage floor drain, the connecting member 3 is connected to the condensate drainage floor drain.

[0052] In an alternative embodiment, the connecting member 3 is a rubber structural member. The rubber structural member is arranged on the outer wall of the bent section 7 and abuts against the side wall of the condensate drainage floor drain. The rubber structural member is cylindrical, and the bent section 7 passes through the middle of the rubber structural member. After the bent section 7 is inserted into the condensate drainage floor drain, the rubber structural member abuts against the side wall of the condensate drainage floor drain, sealing the connection between the condensate drainage floor drain and the condensate drainage pipeline 1 while connecting them, thus preventing condensate leakage.

[0053] In an alternative embodiment, the connecting member 3 is a cover plate, and the bent section 7 passes through the middle of the cover plate. The cover plate is placed on the condensate drainage floor drain to prevent condensate leakage.

[0054] In one or more embodiments, a pressure gauge 25 is provided on the condensate drainage branch 2, and the pressure gauge 25 is located between the condensate drainage valve 4 and the bypass branch 5; when the condensate drainage valve 4 is opened, if the reading of the pressure gauge 25 is abnormal, or the reading of the pressure gauge 25 continuously remains at a high pressure level, it can be determined that there is a blockage in the condensate drainage pipeline 1 or the condensate drainage branch 2. At this time, the bypass branch 5 can be opened to discharge the condensate from the flue gas recirculation fan.

[0055] In one or more embodiments, a flushing pipeline is provided in the horizontal section 21. The flushing pipeline is located downstream of the condensate drainage valve 4, and the flushing pipeline can inject clean water into the horizontal section 21 to clean the condensate drainage branch 2.

[0056] A condensate drainage device for a flue gas recirculation fan in this embodiment can avoid the direct discharge of condensate water from the flue gas recirculation fan to the ground through the condensate drainage branch 2 and the condensate drainage pipeline 1, thus avoiding environmental pollution; when the condensate drainage pipeline 1 is blocked, the condensate water can be discharged from the bypass branch 5 to avoid corrosion of the fan impeller; the condensate drainage floor drain is firmly connected to the condensate drainage pipeline 1 through the connecting piece 3 to avoid condensate water leakage.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A condensate drainage device for a flue gas recycle fan, characterized in that, including a condensate drainage pipeline (1), the condensate drainage pipeline (1) is connected to at least one condensate drainage branch (2), and the condensate drainage branch (2) is used to be connected to the condensate drainage port of the fan; a connector (3) is provided at the end of the condensate drainage pipeline (1), and the connector (3) is used to be adaptively connected to the condensate drainage floor drain; the condensate drainage branch (2) is provided with a condensate drainage valve (4) and a bypass branch (5), the condensate drainage valve (4) is located upstream of the bypass branch (5), and the bypass branch (5) is provided with a bypass valve (6).

2. The condensate drain device for a flue gas recycle fan according to claim 1, wherein the condensate drainage branch (2) is a Z-shaped pipeline, the condensate drainage branch (2) includes a horizontal section (21), a vertical section (22) and a connecting section (23), one end of the vertical section (22) is communicated with the horizontal section (21), and the other end is communicated with the connecting section (23), the horizontal section (21) is used to be connected to the condensate drainage port of the fan, and the connecting section (23) is communicated with the condensate drainage pipeline (1); the condensate drainage valve (4) and the bypass branch (5) are both arranged on the horizontal section (21).

3. The condensate drainage device for a flue gas recycle fan according to claim 2, characterized in that, the bypass branch (5) is arranged vertically, and the bypass branch (5) is communicated with the bottom of the horizontal section (21).

4. The condensate drainage device for a flue gas recycle fan according to claim 2, wherein a through observation port (24) is provided on the horizontal section (21), and a transparent structural member is nested in the observation port (24).

5. The condensate drain device for a flue gas recycle fan according to claim 4, characterized in that, the observation port (24) includes a strip-shaped through hole.

6. The condensate drainage device for a flue gas recycle fan according to claim 1, wherein, further including a temporary storage container (8), the temporary storage container (8) is detachably connected to the bypass valve (6).

7. The condensate drainage device for a flue gas recycle fan according to claim 6, wherein the temporary storage container (8) is provided with a receiving cavity (81) and an opening (82), the receiving cavity (81) is communicated with the opening (82), and the opening (82) can be communicated with the bypass valve (6).

8. The condensate drainage device for a flue gas recycle fan according to claim 1, wherein, the condensate drainage pipeline (1) has a bent section (7), the bent section (7) extends into the condensate drainage floor drain, and the connector (3) is arranged on the bent section (7).

9. The condensate drainage device for a flue gas recycle fan according to claim 8, wherein, the connector (3) includes a rubber structural member, the rubber structural member is arranged on the outer wall of the bent section (7), and the rubber structural member abuts against the side wall of the condensate drainage floor drain.

10. A condensate drainage device for a flue gas recycle fan according to any one of claims 1-9, characterized in that, the condensate drainage branch (2) is provided with a pressure gauge (25), and the pressure gauge (25) is located between the condensate drainage valve (4) and the bypass branch (5).

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