Flow guide device of air exhaust condenser

Abstract

The flow guiding device comprises a shell, a steam inlet, an extraction opening, a water inlet, a water outlet and a condensate water outlet are formed in the shell, and the water inlet and the water outlet are communicated through a heat exchange pipe; a plurality of guide plates are arranged in the shell and form a U-shaped airflow channel in the shell; the two ends of the airflow channel communicate with the steam inlet and the extraction opening correspondingly, the condensate water outlet communicates with the bottom of the airflow channel, and the heat exchange pipe sequentially penetrates through the airflow channel. The heat exchange pipe penetrates through the airflow channel in a reciprocating mode, so that steam which is not fully condensed is subjected to secondary condensation, the situation that the steam is directly pumped away is reduced, non-condensable gas is effectively exhausted in time, the condensation efficiency is improved, and the condenser is simple, efficient, safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of condenser technology, and in particular to a flow guiding device for an extraction condenser. Background Technology

[0002] Condensers are key equipment in thermal power plants, nuclear power plants, and large industrial steam power systems. Their core function is to condense the low-pressure steam discharged from the turbine into water while maintaining a vacuum state within the system, thereby improving the efficiency of the thermodynamic cycle and ensuring the safe operation of the equipment.

[0003] Existing condensers mostly adopt a centripetal extraction method, which does not perform secondary condensation on the insufficiently condensed steam. This results in a large amount of steam being directly extracted, making it difficult for non-condensable gases to be discharged in a timely and effective manner. As a result, non-condensable gases accumulate in the cooling zone and form a large number of dead zones, which seriously affects the condensation efficiency.

[0004] Therefore, a steam extraction condenser guide device is needed that can cool steam multiple times. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a flow guiding device for a vacuum condenser. This device allows heat exchange tubes to reciprocate through an airflow channel, thereby enabling secondary condensation of insufficiently condensed steam, reducing the direct removal of steam, and effectively and promptly discharging non-condensable gases, thus improving condensation efficiency. The device is simple, efficient, safe, reliable, and easy to operate.

[0006] This utility model is achieved through the following technical solution: a flow guiding device for a vacuum condenser is provided, comprising a shell, on which are provided a steam inlet, a vacuum outlet, a water inlet, a water outlet, and a condensate outlet. The water inlet and the water outlet are connected by heat exchange tubes. Several guide plates are provided inside the shell, forming a U-shaped airflow channel within the shell. The two ends of the airflow channel are respectively connected to the steam inlet and the vacuum outlet, and the condensate outlet is connected to the bottom of the airflow channel. Heat exchange tubes pass through the airflow channel in sequence. By the heat exchange tubes reciprocating through the airflow channel, the insufficiently condensed steam is condensed a second time, reducing the occurrence of steam being directly drawn away, thereby timely and effectively discharging non-condensable gases and improving condensation efficiency.

[0007] As an optimization, a drain outlet is provided at the bottom of the airflow channel, and the condensate outlet is connected through the drain outlet. A one-way check valve with its opening facing the condensate outlet is provided on the drain outlet. The one-way check valve separates the condensate and non-condensable gas, preventing the condensate from affecting the discharge of the non-condensable gas.

[0008] As an optimization, the one-way check valve includes a sliding hole on the housing, the axis of which is parallel to the axis of the drain outlet; a valve adapted to the drain outlet is slidably inserted in the sliding hole, and the valve is connected to the housing by a return spring; the drainage volume of the drain outlet is adjusted according to the steam condensation efficiency by the contraction or expansion of the return spring.

[0009] As an optimization, a guide rod is slidably inserted inside the sliding hole, and the valve is located at the end of the guide rod facing the drain outlet; the guide rod guides the valve to prevent it from deflecting.

[0010] As an optimization, multiple airflow channels are connected in sequence, and the guide plate forms an S-shaped airflow channel inside the shell; the insufficiently condensed steam is condensed multiple times through the S-shaped airflow channel, thereby improving the condensation efficiency.

[0011] As an optimization, a water collection hopper is provided at the bottom of the shell, and the condensate outlet is located at the bottom of the water collection hopper; the water collection hopper collects the condensate, which facilitates the discharge of the condensate.

[0012] The beneficial effects of this invention are as follows: by having the heat exchange tube reciprocate through the airflow channel, the insufficiently condensed steam is condensed a second time, reducing the occurrence of steam being directly drawn away, and thus timely and effectively discharging non-condensable gases, thereby improving condensation efficiency; by having the insufficiently condensed steam condensed multiple times through the S-shaped airflow channel, the condensation efficiency is improved; and by having a one-way check valve separate condensate and non-condensable gases, the condensate is prevented from affecting the discharge of non-condensable gases. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 for Figure 1 A schematic diagram of the structure at point A;

[0015] As shown in the figure:

[0016] 1. Shell, 2. Heat exchange tube, 3. Baffle plate, 4. Airflow channel, 5. One-way check valve, 6. Water collection hopper, 101. Steam inlet, 102. Air extraction port, 103. Water inlet, 104. Water outlet, 105. Condensate outlet, 501. Valve, 502. Return spring, 503. Guide rod. Detailed Implementation

[0017] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to describe the solution.

[0018] like Figure 1The flow guiding device of the present invention for the extraction condenser includes a shell 1. The shell 1 has a steam inlet 101, an extraction port 102, a water inlet 103, a water outlet 104, and a condensate outlet 105. The water inlet 103 and the water outlet 104 are connected by a heat exchange tube 2. The shell 1 is provided with a plurality of flow guide plates 3, which form a U-shaped airflow channel 4 inside the shell 1. The two ends of the airflow channel 4 are respectively connected to the steam inlet 101 and the extraction port 102. The condensate outlet 105 is connected to the bottom of the airflow channel 4, and the heat exchange tube 2 passes through the airflow channel 4 in sequence.

[0019] Steam is introduced into the shell 1 through steam inlet 101, and cooling water is introduced into the heat exchange tube 2 through water inlet 103. The steam enters the airflow channel 4 and undergoes heat exchange multiple times with the cooling water through the heat exchange tube 2. The steam condenses into water and is discharged through the condensate outlet 105. The cooling water is discharged through the outlet 104 after completing the heat exchange. The air inside the shell 1 is extracted through the air extraction port 102, and the non-condensable gases inside the shell 1 are discharged through the air extraction port 102.

[0020] like Figure 1 and Figure 2 The bottom of the airflow channel 4 shown is provided with a drain outlet, and the condensate outlet 105 is connected through the drain outlet. A one-way check valve 5 with its opening facing the condensate outlet 105 is provided on the drain outlet.

[0021] Steam condenses into water and gathers at the bottom of the airflow channel 4. The one-way check valve 5 opens automatically, and the condensate in the airflow channel 4 is discharged through the drain port and through the condensate outlet 105.

[0022] like Figure 1 and Figure 2 The one-way check valve 5 shown includes a sliding hole formed on the housing 1, the axis of the sliding hole and the axis of the drain outlet are parallel to each other; a valve 501 adapted to the drain outlet is slidably inserted in the sliding hole, and the valve 501 is connected to the housing 1 through a return spring 502; the valve 501 is prior art.

[0023] Steam condenses into water and collects at the bottom of the airflow channel 4; the return spring 502 contracts, the valve 501 slides in the slide hole toward the end away from the drain outlet, and the one-way check valve 5 opens automatically; the condensate in the airflow channel 4 is discharged through the drain outlet and through the condensate outlet 105; after the condensate at the bottom of the airflow channel 4 is drained, the return spring 502 relaxes, the valve 501 slides in the slide hole toward the drain outlet under the action of the return spring 502, and the one-way check valve 5 closes automatically.

[0024] like Figure 1 and Figure 2 A guide rod 503 is slidably inserted into the sliding hole shown, and a valve 501 is located at the end of the guide rod 503 facing the drain outlet.

[0025] Steam condenses into water and collects at the bottom of the airflow channel 4; the return spring 502 contracts, the guide rod 503 slides in the slide hole, the valve 501 slides towards the end away from the drain outlet, and the one-way check valve 5 opens automatically; the condensate in the airflow channel 4 is discharged through the drain outlet and through the condensate outlet 105; after the condensate at the bottom of the airflow channel 4 is drained, the return spring 502 relaxes, the guide rod 503 slides in the slide hole under the action of the return spring 502, the valve 501 slides towards the drain outlet, and the one-way check valve 5 closes automatically.

[0026] like Figure 1 The multiple airflow channels 4 shown are connected in sequence, and the guide plate 3 forms an S-shaped airflow channel 4 inside the housing 1.

[0027] Steam is introduced into the shell 1 through steam inlet 101, and cooling water is introduced into the heat exchange tube 2 through water inlet 103. The steam enters the S-shaped airflow channel 4 and undergoes heat exchange multiple times with the cooling water through the heat exchange tube 2. The steam condenses into water and is discharged through the condensate outlet 105. After completing the heat exchange, the cooling water is discharged through the outlet 104. The air inside the shell 1 is extracted through the exhaust port 102, and the non-condensable gases inside the shell 1 are discharged through the exhaust port 102.

[0028] like Figure 1 The bottom of the housing 1 shown is provided with a water collection hopper 6, and the condensate outlet 105 is located at the bottom of the water collection hopper 6.

[0029] The condensate in the airflow channel 4 is discharged through the drain outlet and collected at the bottom of the water collection hopper 6. The condensate at the bottom of the water collection hopper 6 is discharged through the condensate outlet 105.

[0030] In actual production, steam is introduced into the shell 1 through steam inlet 101, and cooling water is introduced into the heat exchange tube 2 through water inlet 103. The steam enters the S-shaped airflow channel 4 and undergoes multiple heat exchanges with the cooling water through the heat exchange tube 2. The steam condenses into water and collects at the bottom of the airflow channel 4. The return spring 502 contracts, the guide rod 503 slides within the sliding hole, the valve 501 slides towards the end furthest from the drain outlet, and the one-way check valve 5 automatically opens. The condensate in the airflow channel 4 is discharged through the drain outlet and collected... Water hopper 6 collects at the bottom of water collection hopper 6, and the condensate at the bottom of water collection hopper 6 is discharged through condensate outlet 105; after the condensate at the bottom of airflow channel 4 is drained, return spring 502 relaxes, guide rod 503 slides in slide hole under the action of return spring 502, valve 501 slides toward drain outlet, and one-way check valve 5 automatically closes; after the cooling water completes heat exchange, it is discharged through outlet 104; air is extracted from shell 1 through air extraction port 102, and non-condensable gas in shell 1 is discharged through air extraction port 102.

[0031] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A flow guiding device for a vacuum condenser, comprising a shell (1), wherein the shell (1) is provided with a steam inlet (101), a vacuum port (102), a water inlet (103), a water outlet (104), and a condensate outlet (105), the water inlet (103) and the water outlet (104) being connected by a heat exchange tube (2); characterized in that: The shell (1) is provided with several guide plates (3), which form a U-shaped airflow channel (4) in the shell (1). The two ends of the airflow channel (4) are connected to the steam inlet (101) and the exhaust port (102) respectively. The condensate outlet (105) is connected to the bottom of the airflow channel (4), and the heat exchange tube (2) passes through the airflow channel (4) in sequence.

2. The flow guiding device for the extraction condenser according to claim 1, characterized in that: The bottom of the airflow channel (4) is provided with a drain outlet, and the condensate outlet (105) is connected through the drain outlet. The drain outlet is provided with a one-way check valve (5) with its opening facing the condensate outlet (105).

3. The flow guiding device for the extraction condenser according to claim 2, characterized in that: The one-way check valve (5) includes a sliding hole opened on the housing (1), the axis of the sliding hole and the axis of the drain outlet are parallel to each other; a valve (501) adapted to the drain outlet is slidably inserted in the sliding hole, and the valve (501) is connected to the housing (1) through a return spring (502).

4. The flow guiding device for the extraction condenser according to claim 3, characterized in that: A guide rod (503) is slidably inserted into the sliding hole, and a valve (501) is located at the end of the guide rod (503) facing the drain outlet.

5. The flow guiding device for the extraction condenser according to claim 1, characterized in that: Multiple airflow channels (4) are connected in sequence, and the guide plate (3) forms an S-shaped airflow channel (4) inside the shell (1).

6. The flow guiding device for the extraction condenser according to claim 2, characterized in that: The bottom of the shell (1) is provided with a water collection hopper (6), and the condensate outlet (105) is located at the bottom of the water collection hopper (6).

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