CN215884039U

CN215884039U - Marine automatic exhaust level pressure moisturizing device

Info

Publication number: CN215884039U
Application number: CN202120326851.0U
Authority: CN
Inventors: 王爱龙; 毛亮; 陈瑜; 刘婧; 过叶青
Original assignee: Wuxi Haihe Equipment Technology Ltd
Current assignee: Wuxi Haihe Equipment Technology Ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2022-02-22
Anticipated expiration: 2031-02-05

Abstract

The utility model relates to a closed circulating water system component for a ship, in particular to an automatic exhaust and constant pressure water replenishing device for the ship. Its characteristics are including exhaust module, control module, the level pressure module, moisturizing module and house steward, exhaust module includes air pump and air discharge tank, there is automatic exhaust valve at the air discharge tank top, there is the atomizing pipe on the upper portion of air discharge tank lateral wall, atomizing pipe one end is located the air discharge tank, the other end is located outside the air discharge tank, the atomizing pipe that is located the air discharge tank serves has atomizing nozzle, the level pressure module includes the expansion tank, the moisturizing module includes the moisturizing case, there is the breather valve at the top of moisturizing case, the lower part of moisturizing case inner chamber, middle part and upper portion all have a liquid level switch. The water replenishing device occupies a small space, is simple in centralized control and management and is convenient to install.

Description

Marine automatic exhaust level pressure moisturizing device

Technical Field

The utility model relates to a closed circulating water system component for a ship, in particular to an automatic exhaust and constant pressure water replenishing device for the ship.

Background

It is known in the shipbuilding industry that a large amount of air (free gas and dissolved gas) existing in a closed circulating water system for ships seriously affects the heat exchange efficiency of end equipment and the service life of the equipment, and meanwhile, the circulating water system often affects the use effect of the system due to insufficient pressure. Therefore, the closed circulating water system for the ship needs to perform exhaust, constant pressure and water supplement during normal operation.

At present, two methods for exhausting, fixing pressure and supplementing water of a closed circulating water system exist in the prior art, and one method is to design exhaust, fixing pressure and supplementing water mechanisms separately and install the exhaust, fixing pressure and supplementing water mechanisms in the circulating water system in a redispersion mode. The exhaust, constant pressure and water supplement mechanisms in the mode are respectively designed and dispersedly installed, the occupied space is large, and the centralized control and management of the exhaust, constant pressure and water supplement are difficult. The second is to arrange a high level water tank in the closed circulating water system. However, the high level tank must be installed at the highest point of the circulating water system, and installation is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing an automatic exhaust and constant pressure water replenishing device for a ship, which occupies a small space, is simple in centralized control and management and is convenient to install.

In order to solve the problems, the following technical scheme is provided:

the utility model discloses a marine automatic exhaust constant-pressure water replenishing device which is characterized by comprising an exhaust module, a control module, a constant-pressure module, a water replenishing module and a main pipe. The exhaust module comprises an exhaust pump and an exhaust tank, an automatic exhaust valve is arranged at the top of the exhaust tank, an atomizing pipe is arranged on the upper portion of the side wall of the exhaust tank, one end of the atomizing pipe is located in the exhaust tank, the other end of the atomizing pipe is located outside the exhaust tank, and an atomizing nozzle is arranged at one end of the atomizing pipe located in the exhaust tank. The constant pressure module comprises an expansion tank. The water supplementing module comprises a water supplementing tank, a ventilation valve is arranged at the top of the water supplementing tank, and first liquid level switches are arranged at the lower part, the middle part and the upper part of an inner cavity of the water supplementing tank. One end of the main pipe is a water inlet, the other end of the main pipe is a water outlet, and a constant pressure port, a water diversion port and a water return port are sequentially arranged on the side wall of the main pipe from the water inlet to the water outlet; the lower part of the exhaust tank is connected with the inlet of an exhaust pump through a pipeline, and the outlet of the exhaust pump is connected with an electric valve, a first check valve and a first stop valve in sequence through pipelines and then connected with the water return port. And one end of the atomizing pipe positioned outside the exhaust tank is connected with the water diversion port after being connected with a second stop valve through a pipeline. The expansion tank is connected with the constant pressure port after being sequentially connected with the third stop valve and the fourth stop valve through pipelines, one end of the third stop valve far away from the expansion tank is connected with a pressure sensor, and the pipeline between the third stop valve and the fourth stop valve is connected with a safety valve. The upper portion of moisturizing case is connected with the water injection pipe, has set gradually water injection pump and fifth stop valve from the one end that is close to the moisturizing case to the other end on the water injection pipe, and the lateral wall of moisturizing case has connected gradually through the pipeline and has connected gradually that section pipeline between pressure release solenoid valve and sixth stop valve after with third stop valve and fourth stop valve continuous, and the bottom of moisturizing case has connected gradually behind first moisturizing pump, seventh stop valve and the second check valve through the pipeline and has cut off that section pipeline between valve and fourth stop valve continuous. The electric valve, the exhaust pump, the pressure sensor, the water injection pump, the pressure relief electromagnetic valve, the first water replenishing pump and the first liquid level switch are all connected with the controller through leads.

Wherein, a first filter is arranged on the section of pipeline between the second stop valve and the atomizing pipe; and a second filter is arranged on the section of the water injection pipe between the fifth stop valve and the water injection pump.

And a second liquid level switch is arranged at the lower part of the inner cavity of the exhaust tank and is positioned above the interface of the exhaust pump and the exhaust tank, and the second liquid level switch is connected with the controller through a lead.

The bottom of the water replenishing tank is connected with a manual water drain valve.

The distance between the water return port and the water diversion port is more than or equal to 500 mm.

And a second water replenishing pump, an eighth stop valve and a third one-way valve are sequentially connected between one end of the first water replenishing pump close to the water replenishing tank and one end of the second one-way valve far away from the first stop valve through pipelines, and the second water replenishing pump is connected with the controller through a lead.

By adopting the scheme, the method has the following advantages:

the marine automatic exhaust constant-pressure water replenishing device comprises an exhaust module, a control module, a constant-pressure module, a water replenishing module and a header pipe, wherein the exhaust module comprises an exhaust pump and an exhaust tank, an automatic exhaust valve is arranged at the top of the exhaust tank, an atomizing pipe is arranged at the upper part of the side wall of the exhaust tank, one end of the atomizing pipe is positioned at the exhaust tank, the other end of the atomizing pipe is positioned outside the exhaust tank, an atomizing nozzle is arranged at one end of the atomizing pipe positioned in the exhaust tank, the constant-pressure module comprises an expansion tank, the water replenishing module comprises a water replenishing tank, a vent valve is arranged at the top of the water replenishing tank, and first liquid level switches are arranged at the lower part, the middle part and the upper part of an inner cavity of the water replenishing tank. The marine automatic exhaust constant pressure water replenishing device has the advantages that the exhaust module, the constant pressure module and the water replenishing module are designed into a whole, the exhaust module, the constant pressure module and the water replenishing module are integrally installed, the exhaust module, the constant pressure module and the water replenishing module are controlled by the control module, compared with the independent design in the background art, the occupied space is small, and the centralized control management is simple and convenient. Moreover, the marine automatic exhaust constant-pressure water replenishing device does not need to be installed at the highest point of the closed circulating water system, and is convenient to install.

Drawings

Fig. 1 is a schematic structural view of the marine automatic exhaust constant pressure water replenishing device of the utility model.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in FIG. 1, the automatic exhaust constant-pressure water replenishing device for the ship comprises an exhaust module, a control module 19, a constant-pressure module, a water replenishing module and a main pipe. The exhaust module includes exhaust pump 8 and exhaust can 12, and there is automatically exhausting valve 10 at 12 tops of exhaust can, and there is atomizing pipe 37 on the upper portion of 12 lateral walls of exhaust can, and atomizing pipe 37 one end is located exhaust can 12, and the other end is located outside exhaust can 12, and atomizing pipe 37 that is located exhaust can 12 is served and is had atomizing nozzle 11, the level pressure module includes expansion tank 16. The water supplementing module comprises a water supplementing tank 26, a ventilation valve 23 is arranged at the top of the water supplementing tank 26, and first liquid level switches 27 are arranged at the lower part, the middle part and the upper part of an inner cavity of the water supplementing tank 26. One end of the main pipe is a water inlet 29, the other end of the main pipe is a water outlet 28, and a constant pressure port 13, a water diversion port 2 and a water return port 1 are sequentially arranged on the side wall of the main pipe from the water inlet 29 to the water outlet 28. The lower part of the exhaust tank 12 is connected with the inlet of an exhaust pump 8 through a pipeline, and the outlet of the exhaust pump 8 is connected with an electric valve 7, a first one-way valve 5 and a first stop valve 3 in sequence through pipelines and then connected with the water return port 1. One end of an atomizing pipe 37 positioned outside the exhaust tank 12 is connected with the water diversion port 2 after being connected with a second stop valve 4 through a pipeline. The expansion tank 16 is connected with a third stop valve 17 and a fourth stop valve 14 in sequence through pipelines and then is connected with the constant pressure port 13, one end of the third stop valve 17 far away from the expansion tank 16 is connected with a pressure sensor 18, and the pipeline between the third stop valve 17 and the fourth stop valve 14 is connected with a safety valve 15. The upper portion of moisturizing case 26 is connected with water injection pipe 38, water injection pump 22 and fifth stop valve 20 have set gradually between the one end that is close to moisturizing case 26 on water injection pipe 38 to the other end, the lateral wall of moisturizing case 26 has connected gradually pressure release solenoid valve 25 and sixth stop valve 24 back through the pipeline and has linked to each other with the pipeline that is between third stop valve 17 and fourth stop valve 14, the bottom of moisturizing case 26 has connected gradually first moisturizing pump 32 through the pipeline, after seventh stop valve 31 and the second check valve 30, and that section pipeline that is between third stop valve 17 and fourth stop valve 14 links to each other. The electric valve 7, the exhaust pump 8, the pressure sensor 18, the water injection pump 22, the pressure relief solenoid valve 25, the first water replenishing pump 32 and the first liquid level switch 27 are all connected with the controller through leads.

The section of the pipeline between the second stop valve 4 and the atomizing pipe 37 is provided with a first filter 6. The second filter 21 is arranged on the section of the water injection pipe 38 between the fifth stop valve 20 and the water injection pump 22.

And a second liquid level switch 9 is arranged at the lower part of the inner cavity of the exhaust tank 12, the second liquid level switch 9 is positioned above the interface of the exhaust pump 8 and the exhaust tank 12, and the second liquid level switch 9 is connected with the controller through a lead.

The bottom of the water replenishing tank 26 is connected with a manual drain valve 36.

The distance between the water return port 1 and the water diversion port 2 is more than or equal to 500 mm.

A second water replenishing pump 35, an eighth stop valve 34 and a third one-way valve 33 are sequentially connected between one end of the first water replenishing pump 32 close to the water replenishing tank 26 and one end of the second one-way valve 30 far away from the first stop valve 3 through pipelines, and the second water replenishing pump 35 is connected with a controller through a lead.

The exhaust tank 12 in this embodiment is a vacuum exhaust tank 12, the exhaust pump 8 is a vacuum pump, and the expansion tank 16 is a closed expansion tank 16.

When in use, the inlet and the outlet of the main pipe are connected with a closed circulating water system for the ship. According to henry's law, the solubility of a gas in water at a certain pressure is related to the temperature of the water and the pressure. At a certain pressure, the solubility of a gas in water is inversely proportional to the temperature, i.e. the solubility of a gas in water decreases with increasing temperature. At a certain temperature, the solubility of gas in water is proportional to the pressure, i.e. the pressure decreases and the solubility of gas in water decreases.

The working principle of the exhaust tank 12 is that a part of liquid in the closed circulating water system for the ship is placed in a vacuum environment, dissolved gas in the liquid is released and separated from the closed circulating water system for the ship, and then the degassed and absorbable liquid is injected back to the closed circulating water system for the ship to continue to circulate, and the degassed and absorbable liquid absorbs free gas and dissolved gas existing in the closed circulating water system for the ship to reach equilibrium again, and the process is circulated repeatedly.

The exhaust circulation process is that firstly, the control module 19 controls the exhaust pump 8 to start and operate, so that the exhaust tank 12 is in a vacuum state, the vacuumizing is completed, the atomization stage is started, water in the marine closed circulation water system enters the atomization pipe 37 from the water inlet 2 and is sprayed into the exhaust tank 12 in an atomized form through the atomization nozzle 11, and the atomized water enters the vacuum environment due to the increase of the surface area of the atomized water, so that dissolved gas in the water is rapidly separated out, and the exhaust effect is achieved. Then, the exhaust pump 8 stops running after working for a period of time, the ship closed circulating water system enters an exhaust stage, water is continuously sent into the atomizing pipe 37, the water level in the exhaust tank 12 rises, gas separated from the water is exhausted to the outside of the system through the automatic exhaust valve 1010, and finally the system enters a standby state after the exhaust is finished until the next exhaust cycle starts.

Under the action of the control module 19, the second liquid level switch 9 in the exhaust tank 12 is interlocked with the exhaust pump 8, so that the exhaust pump 8 is prevented from being lack of water and idling, and the service life is prevented from being influenced.

The constant pressure module has the function of constant pressure, prevents the pressure of the closed circulating water system for the ship from fluctuating, reduces the frequent starting of the water pump, and can be used for absorbing the water hammer impact caused by opening and closing of a valve, the water pump and the like of the closed circulating water system for the ship. When the pressure of the closed circulating water system for the ship rises, water is squeezed into the air bag of the expansion tank 16 under the action of the system pressure, so that the air bag expands, the volume of gas between the tank body of the expansion tank 16 and the air bag is compressed after the air bag expands, the gas pressure rises until the gas pressure is consistent with the system pressure, water does not enter the air bag, the water pressure and the air pressure reach balance, the rapid rise of the system pressure is slowed down and reduced in the process, and the pressure stabilizing effect is achieved. When the pressure of the system is reduced, the gas with pressure between the tank body and the air bag can compress the air bag, and water in the air bag is squeezed out and supplemented into the system, so that the pressure of the system can not be reduced too much or too fast, and the effect of stabilizing the pressure is achieved.

The water supplementing module is provided with a first water supplementing pump 32 and a second water supplementing pump 35, and the first water supplementing pump 32 and the second water supplementing pump 35 are connected in parallel and are mutually standby. The control module 19 controls the start and stop of the first water replenishing pump 32 and the second water replenishing pump 35 according to the feedback signals of the pressure sensor 18, the controller controls the start and stop of the water injection pump 22 according to the feedback signals of the three first liquid level switches 27, namely the water injection pump 22 is started at a low water level, the water injection pump 22 stops when the water level reaches a medium liquid level, and the controller gives an alarm when the water replenishing tank 26 reaches a high liquid level, so that the manual water drain valve 36 can be opened manually to drain water.

The control controls the pressure relief electromagnetic valve 25 to be opened or closed according to the feedback pressure value of the pressure sensor 18.

The pressure relief solenoid valve 25 and the safety valve 15 are used for ensuring the safety of the device, the opening pressure of the safety valve 15 is greater than the opening pressure of the pressure relief solenoid valve 25, and the opening pressure of the pressure relief solenoid valve 25 is greater than the set pressure value of the closed circulating water system for the ship.

Claims

1. The marine automatic exhaust constant-pressure water replenishing device is characterized by comprising an exhaust module, a control module (19), a constant-pressure module, a water replenishing module and a main pipe; the exhaust module comprises an exhaust pump (8) and an exhaust tank (12), an automatic exhaust valve (10) is arranged at the top of the exhaust tank (12), an atomizing pipe (37) is arranged at the upper part of the side wall of the exhaust tank (12), one end of the atomizing pipe (37) is positioned in the exhaust tank (12), the other end of the atomizing pipe is positioned outside the exhaust tank (12), and an atomizing nozzle (11) is arranged at one end of the atomizing pipe (37) positioned in the exhaust tank (12); the constant pressure module comprises an expansion tank (16); the water supplementing module comprises a water supplementing tank (26), a ventilation valve (23) is arranged at the top of the water supplementing tank (26), and first liquid level switches (27) are arranged at the lower part, the middle part and the upper part of an inner cavity of the water supplementing tank (26); one end of the main pipe is provided with a water inlet (29), the other end of the main pipe is provided with a water outlet (28), and a constant pressure port (13), a water diversion port (2) and a water return port (1) are sequentially arranged on the side wall of the main pipe from the water inlet (29) to the water outlet (28); the lower part of the exhaust tank (12) is connected with an inlet of an exhaust pump (8) through a pipeline, and an outlet of the exhaust pump (8) is connected with an electric valve (7), a first one-way valve (5) and a first stop valve (3) in sequence through pipelines and then is connected with the water return port (1); one end of an atomizing pipe (37) positioned outside the exhaust tank (12) is connected with a second stop valve (4) through a pipeline and then is connected with the water diversion port (2); the expansion tank (16) is connected with a third stop valve (17) and a fourth stop valve (14) in sequence through pipelines and then is connected with the constant pressure port (13), one end of the third stop valve (17) far away from the expansion tank (16) is connected with a pressure sensor (18), and a safety valve (15) is connected on the section of pipeline between the third stop valve (17) and the fourth stop valve (14); the water injection pump is characterized in that a water injection pipe (38) is connected to the upper part of the water supplementing tank (26), a water injection pump (22) and a fifth stop valve (20) are sequentially arranged on the water injection pipe (38) from one end close to the water supplementing tank (26) to the other end, the side wall of the water supplementing tank (26) is sequentially connected with a pressure relief electromagnetic valve (25) and a sixth stop valve (24) through pipelines and then is connected with a section of pipeline between the third stop valve (17) and the fourth stop valve (14), and the bottom of the water supplementing tank (26) is sequentially connected with a first water supplementing pump (32), a seventh stop valve (31) and a second one-way valve (30) through pipelines and then is connected with a section of pipeline between the third stop valve (17) and the fourth stop valve (14); the electric valve (7), the exhaust pump (8), the pressure sensor (18), the water injection pump (22), the pressure relief electromagnetic valve (25), the first water replenishing pump (32) and the first liquid level switch (27) are all connected with the controller through leads.

2. The automatic exhaust and constant pressure water replenishing device for the ship according to claim 1, wherein the section of the pipeline between the second stop valve (4) and the atomizing pipe (37) is provided with a first filter (6); and a second filter (21) is arranged on the section of the water injection pipe (38) between the fifth stop valve (20) and the water injection pump (22).

3. The automatic exhaust and constant pressure water replenishing device for the ship according to claim 1, wherein a second liquid level switch (9) is arranged at the lower part of the inner cavity of the exhaust tank (12), the second liquid level switch (9) is positioned above the interface of the exhaust pump (8) and the exhaust tank (12), and the second liquid level switch (9) is connected with the controller through a lead.

4. The marine automatic exhaust constant-pressure water replenishing device according to claim 1, wherein a manual drain valve (36) is connected to the bottom of the water replenishing tank (26).

5. The marine automatic exhaust constant-pressure water replenishing device according to claim 1, wherein the distance between the water return port (1) and the water inlet port (2) is greater than or equal to 500 mm.

6. The marine automatic exhaust constant-pressure water replenishing device according to any one of claims 1 to 5, wherein a second water replenishing pump (35), an eighth stop valve (34) and a third check valve (33) are sequentially connected between one end of the first water replenishing pump (32) close to the water replenishing tank (26) and one end of the second check valve (30) far away from the first stop valve (3) through pipelines, and the second water replenishing pump (35) is connected with a controller through a lead.