CN207147306U - A kind of heat exchanger condensed water open type steam trap connection - Google Patents

Abstract

The utility model discloses a kind of heat exchanger condensed water open type steam trap connection, including hydrophobic pipeline and recovery pipe, it is the condensation water tank that open type is set that it, which also includes top, hydrophobic pipeline end is provided with the diversion pipeline for being connected with the hydrophobic pipeline and condensation water tank, the end of diversion pipeline is stretched in condensation water tank, and the end of diversion pipeline is provided with steam jet ejector, soft water import and liquid outlet are additionally provided with condensation water tank, the soft water import is located at the top of condensation water tank, and soft water import is connected with the soft water pipeline for conveying soft water into condensation water tank, the liquid outlet is located at condensation water tank bottom, and it is provided with liquid outlet and connects the liquid outlet and the return line of the recovery pipe, pump is equipped on return line.The utility model realizes to be reclaimed to greatest extent to condensate, is solve thed problems, such as that condensate discharge system back pressure is too high, is reduced the generation of water hammer.

Description

An open-type drainage device for condensed water in a heat exchanger

technical field

The utility model belongs to the technical field of tobacco drying equipment, in particular to an open-type drainage device for condensed water of a heat exchanger.

Background technique

At present, in the production process of tobacco thread drying equipment, because the production of silk thread is discontinuous, it will be shut down and started every day. After the shutdown, the steam valve will be closed, and the steam accumulated in the heater will condense into condensed water. The pressure becomes a vacuum, and the condensed water cannot be discharged, and the bypass valve must be opened to discharge the condensed water when the machine is turned on again. In addition, when the opening of the pneumatic membrane valve becomes smaller, the inlet pressure of the trap decreases, and when the pressure difference is not enough to overcome the back pressure of the condensed water pipeline, the drain cannot discharge the condensed water, resulting in the accumulation of condensed water in the heat exchanger, and the process temperature is difficult to guarantee .

And because the condensing system is over-pressurized, on the one hand, water hammer occurs due to poor drainage, causing serious noise and increased mechanical stress, which seriously damages the heat exchanger. On the other hand, it affects the stability of tobacco moisture control. Sex has a greater impact.

Utility model content

In order to solve the deficiencies in the prior art, the utility model provides an open-type drainage device for condensed water in the heat exchanger, which avoids the accumulation of condensed water in the pipeline, eliminates the water hammer phenomenon, improves the temperature control accuracy, and guarantees and While improving the temperature and humidity quality of the process, it realizes the maximum recovery of condensed water, effectively solves the problem of excessive back pressure in the condensed water discharge system, reduces the occurrence of water hammer, stabilizes the stability of tobacco moisture control, and improves equipment reliability.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: an open-type drainage device for condensed water in a heat exchanger, including a drainage pipeline for conveying condensed water and a recovery pipeline for recovering condensed water, and it also includes The upper part is an open condensate tank, and the end of the drainage pipeline is provided with a diversion pipeline connected with the drainage pipeline and the condensate tank, and the end of the diversion pipeline extends into the condensate tank, and the end of the diversion pipeline The end is equipped with a steam ejector, and the condensate tank is also provided with a soft water inlet and a liquid outlet. The liquid outlet is located at the lower part of the condensed water tank, and the liquid outlet is provided with a return pipeline connecting the liquid outlet and the recovery pipeline, and a pump is arranged on the return pipeline.

The condensed water tank is provided with a liquid level gauge for detecting the liquid level in the tank and a temperature sensor for detecting the temperature of the liquid in the tank, and the liquid level gauge is connected with the pump control.

A solenoid valve is arranged on the soft water pipeline, and the solenoid valve is connected to the temperature sensor for control.

A cut-off valve, a drain valve and a check valve are sequentially arranged on the drain pipeline along the liquid flow direction.

A hydrophobic protective pipeline is connected to the side of the hydrophobic pipeline, and the two ends of the hydrophobic protective pipeline are respectively connected with the hydrophobic pipeline upstream of the shut-off valve and the hydrophobic pipeline downstream of the check valve.

The end of the drain pipeline is also provided with a direct-flow pipeline connected with the drain pipeline and the recovery pipeline, and a shut-off valve is arranged on the direct-flow pipeline.

A cut-off valve is also arranged on the diversion pipeline and the return pipeline.

The bottom of the condensed water tank is provided with a drain port, and the drain port is connected with a drain pipeline, and a shut-off valve is arranged on the drain pipeline; an overflow pipe is also connected with the condensed water tank.

A pump protection pipeline is connected next to the pump, and both ends of the pump protection pipeline are respectively connected with the upstream and downstream return pipelines of the pump.

The beneficial effects of the utility model are:

The application of the condensed water open-type drainage device of the utility model avoids the accumulation of condensed water in the pipeline, eliminates the water hammer phenomenon, improves the temperature control accuracy, and realizes the anti-condensation while ensuring and improving the temperature and humidity quality of the process. The maximum recovery of water effectively solves the problem of excessive back pressure in the condensate discharge system, reduces the occurrence of water hammer, stabilizes the stability of tobacco moisture control, and improves the reliability of the equipment.

In the utility model, due to the existence of the open condensed water tank, the condensed water with steam is evenly mixed with the soft water in the condensed water tank to realize the cooling of the condensed water, and the water vapor in the condensed water will be directly drained from the top opening of the condensed water tank. In order to reduce the occurrence of water hammer in subsequent pipeline transportation.

The end of the drain pipeline is also provided with a direct-flow pipeline connected with the drain pipeline and the recovery pipeline, and a stop valve is arranged on the direct-flow pipeline. The traditional operation method is directly connected to the recovery pipeline to ensure the operation efficiency of the equipment.

The arrangement of the liquid level gauge and the temperature sensor in the utility model facilitates automatic detection and control.

Description of drawings

Fig. 1 is a schematic diagram of the system structure of the utility model.

Detailed ways

As shown in Figure 1, a heat exchanger condensed water open-type drainage device of the present invention includes a drainage pipeline 2 for conveying condensed water and a recovery pipeline 1 for recovering condensed water, and it also includes an upper part for The condensed water tank 4 that is set in an open type, the end of the drain pipeline 2 is provided with a diversion pipeline 10 connected to the drain pipeline 2 and the condensed water tank 4, and the end of the diversion pipeline 10 extends into the condensed water tank 4, and The end of the diversion pipeline 10 is provided with a steam ejector 9, and the condensed water tank 4 is also provided with a soft water inlet and a liquid outlet. The soft water inlet is located at the top of the condensed water tank 4, and the soft water inlet is connected with The soft water pipeline 1 for transporting soft water, the liquid outlet is located at the bottom of the condensed water tank 4, and the liquid outlet is provided with a return pipeline 12 connecting the liquid outlet and the recovery pipeline 8, and the return pipeline 12 is equipped with A gear pump 7 is provided.

The condensed water tank 4 is provided with a magnetic liquid level gauge 6 for detecting the liquid level in the tank and a temperature sensor 3 for detecting the temperature of the liquid in the tank, and the magnetic liquid level gauge 6 is connected to the gear pump 7 for control. The soft water pipeline 1 is equipped with a solenoid valve 13 , and the solenoid valve 13 is connected to the temperature sensor 3 for control.

The drain pipeline 2 is provided with a shut-off valve, a drain valve 14 and a check valve 15 in sequence along the liquid flow direction. In addition, a hydrophobic protective pipeline 16 is connected to the side of the hydrophobic pipeline 2, and the two ends of the hydrophobic protective pipeline 16 are respectively connected with the hydrophobic pipeline upstream of the shut-off valve and the hydrophobic pipeline downstream of the check valve 15.

The diversion pipeline 10 and the return pipeline 12 are also equipped with stop valves.

The bottom of the condensed water tank 4 is provided with a drain port, and the drain port is connected with a drain line 18 , and the drain line 18 is provided with a shut-off valve.

A pump protection pipeline 17 is connected next to the gear pump 7, and both ends of the pump protection pipeline 17 are respectively connected with the upstream and downstream return pipelines of the gear pump 7, and the pump protection pipeline 17 is also equipped with a shut-off valve.

The end of the drain pipeline 2 is also provided with a direct flow pipeline 11 connected with the drain pipeline 2 and the recovery pipeline 8, and a shut-off valve is arranged on the direct flow pipeline 11. The setting of the direct current pipeline 11 can directly connect the condensed water into the recovery pipeline along the traditional operation method when the condensed water tank 4 breaks down, so as to ensure the operating efficiency of the equipment.

The application of the condensed water open-type drainage device of the utility model avoids the accumulation of condensed water in the pipeline, eliminates the water hammer phenomenon, improves the temperature control accuracy, and realizes the anti-condensation while ensuring and improving the temperature and humidity quality of the process. The maximum recovery of water effectively solves the problem of excessive back pressure in the condensate discharge system, reduces the occurrence of water hammer, stabilizes the stability of tobacco moisture control, and improves the reliability of the equipment.

In the utility model, due to the existence of the condensed water tank 4 provided in an open manner, the condensed water with steam is evenly mixed with the soft water in the condensed water tank 4 to realize cooling of the condensed water, and the water vapor in the condensed water will directly flow from the top opening of the condensed water tank 4 Drain away to reduce the occurrence of water hammer in subsequent pipeline transportation.

This embodiment also discloses a method for using an open-type drainage device for condensed water in a heat exchanger, including the following steps:

1) Open the soft water pipeline 1 before starting the equipment, so that the condensed water tank 4 stores a certain amount of water, and the liquid level must be at least below the steam ejector 9, then close the soft water pipeline 1, and the liquid level in the condensed water tank 4 is determined by the magnetic level gauge 6 detection control;

2) Open the drainage pipeline 2, and after the equipment is turned on for heat exchange and drainage, the condensed water passes through the drainage pipeline 2 and enters the condensed water tank 4 from the steam injector 9 to mix with the soft water in the condensed water tank 4, and the condensed water tank 4 is controlled by the temperature sensor 3 Medium liquid temperature, when the liquid temperature in the condensate water tank 4 exceeds 60±5°C, the soft water pipeline 1 is opened again to keep the liquid temperature in the condensate water tank 4 constant;

3) When the liquid level in the condensed water tank 4 reaches the set height, the gear pump 7 is turned on to force the liquid in the condensed water tank 4 to be discharged into the recovery pipeline 8 .

The above method of use is simple to operate and easy to control, realizes maximum recovery of condensed water, effectively solves the problem of excessive back pressure in the condensed water discharge system, reduces the occurrence of water hammer, and stabilizes the stability of tobacco moisture control .

The above embodiments are only used to illustrate and not limit the technical solutions of the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that the present utility model can still be modified or equivalently replaced. Any modification or partial replacement without departing from the spirit and scope of the present utility model shall fall within the scope of the claims of the present utility model.

Claims (9)

1. a kind of heat exchanger condensed water open type steam trap connection, including for conveying the hydrophobic pipeline of condensed water and being condensed for reclaiming The recovery pipe of water, it is characterised in that：It is the condensation water tank that open type is set that it, which also includes top, and hydrophobic pipeline end is provided with connection There is the diversion pipeline of the hydrophobic pipeline and condensation water tank, the end of diversion pipeline is stretched in condensation water tank, and diversion pipeline End be provided with steam jet ejector, soft water import and liquid outlet are additionally provided with condensation water tank, the soft water import is located at condensed water The top of case, and soft water import is connected with the soft water pipeline for conveying soft water into condensation water tank, the liquid outlet is positioned at cold Condensate lower box part, and be provided with liquid outlet and connect the liquid outlet and the return line of the recovery pipe, arranged on return line There is pump.

A kind of 2. heat exchanger condensed water open type steam trap connection according to claim 1, it is characterised in that：The condensation water tank Interior be provided with is used for the liquid level gauge of liquid level and the temperature sensor for fluid temperature in detection case in detection case, liquid level gauge and pump control System connection.

A kind of 3. heat exchanger condensed water open type steam trap connection according to claim 2, it is characterised in that：The soft water pipeline On be equipped with magnetic valve, magnetic valve connects with temperature sensor control.

A kind of 4. heat exchanger condensed water open type steam trap connection according to claim 3, it is characterised in that：The hydrophobic pipeline On along liquid flow direction be sequentially provided with stop valve, drain valve and check-valves.

A kind of 5. heat exchanger condensed water open type steam trap connection according to claim 4, it is characterised in that：The hydrophobic pipeline Upper side is connected to hydrophobic protection pipeline, the both ends of the hydrophobic protection pipeline hydrophobic pipeline and check valve downstream with stop valve upstream respectively Hydrophobic pipeline connection.

A kind of 6. heat exchanger condensed water open type steam trap connection according to claim 5, it is characterised in that：The hydrophobic pipeline End is additionally provided with the direct current pipeline for being connected with the hydrophobic pipeline and recovery pipe, and stop valve is arranged on direct current pipeline.

A kind of 7. heat exchanger condensed water open type steam trap connection according to claim 6, it is characterised in that：The diversion pipeline With stop valve is also equipped on return line.

A kind of 8. heat exchanger condensed water open type steam trap connection according to claim 7, it is characterised in that：The condensation water tank Bottom be provided with leakage fluid dram, leakage fluid dram is connected with drain line, stop valve is equipped in drain line；On the condensation water tank also It is connected with overflow pipe.

A kind of 9. heat exchanger condensed water open type steam trap connection according to claim 8, it is characterised in that：Connect by the pump There is pump to protect pipeline, pump protects return line of the both ends of pipeline respectively with pump upstream and downstream to be connected.