CN219646617U - High-pressure fine water mist automatic water supplementing and cooling device - Google Patents

Abstract

The utility model discloses an automatic water supplementing and cooling device for high-pressure fine water mist, which comprises a PLC control cabinet, a water tank, a drainage pipeline and a water supplementing pipeline, wherein a temperature sensor and a liquid level sensor are arranged in the water tank, the temperature sensor and the liquid level sensor are electrically connected with the PLC control cabinet to feed back liquid level and temperature signals, the drainage pipeline is communicated with the water tank through a drainage electromagnetic valve, the water supplementing pipeline is communicated with the water tank through a water supplementing electromagnetic valve, the PLC control cabinet controls the drainage electromagnetic valve and the water supplementing electromagnetic valve to be conducted and cut off according to the liquid level and the temperature signals, when the water temperature detected by the temperature sensor exceeds a preset value, the PLC control cabinet controls the drainage electromagnetic valve to be conducted, and when the liquid level sensor detects that the liquid level of the water tank is reduced to the automatic water supplementing level, the PLC control cabinet controls the drainage electromagnetic valve to be cut off, the water supplementing electromagnetic valve to be conducted so as to convey external cooling water into the water tank, so that the water tank can be automatically cooled, and a high-pressure pump can always keep running in a safe and reliable temperature environment without damage.

Description

High-pressure fine water mist automatic water supplementing and cooling device

Technical Field

The utility model belongs to the technical field of pump assembly cooling, and particularly relates to an automatic water supplementing and cooling device for high-pressure fine water mist.

Background

At present, high-pressure pumps adopted in high-pressure water mist fire extinguishing devices in domestic and foreign markets are all multi-plunger pumps. The high-pressure plunger pump adopts water to realize lubrication, which is different from an oil lubrication mode, so that oil feeding operation at regular intervals is not needed. However, for a water lubrication high-pressure pump, the water temperature plays a decisive role in the cooling effect of the high-pressure plunger pump, when the water temperature is above 50 ℃ for a long time, the thermal expansion of the piston cylinder under high-speed operation causes rapid and multiplied increase of the operation resistance, and the abrasion is aggravated, so that the high-pressure plunger pump is damaged. In addition, when abnormal conditions such as misoperation occur, the working temperature is very high, so that the working temperature is often seriously damaged, and the maintenance value is avoided.

Therefore, how to maintain the operating temperature of the high pressure plunger pump is a problem to be solved.

Disclosure of Invention

Based on this, the present utility model aims to provide an automatic water replenishing device for high-pressure water mist by using an automatic water replenishing cooling mode, which overcomes the aforementioned defects in the prior art. The cooling principle adopted by the cooling system is simple, the working principle of the system is clear, the structure is compact, the implementation is simple, the occupied space is small, and the cost is low. The operation does not pollute the environment, and the principle supports all high-pressure water mist fire extinguishing device products adopting multiple plungers, and the application range is wide. The method can be used for reforming projects or newly-built projects, and is hardly limited by the equipment structure of equipment products. The system is particularly suitable for industries with high automation degree, unattended operation, difficult maintenance and the like, such as subways, substations, underground pipe galleries, offshore wind power, offshore oil platforms and other important places. Aiming at the application scene, the automatic cooling device of the high-pressure water mist pump set is specially designed by combining the water supplementing principle and structure of the high-pressure water mist pump set system and the safe operation working range of the pump.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a high-pressure fine water fog automatic water supply cooling device, includes PLC switch board, water tank, drainage pipe and moisturizing pipeline, bottom is equipped with temperature sensor in the water tank, temperature sensor will detect the temperature and send to the PLC switch board, be equipped with level sensor in the water tank, level sensor with PLC switch board electric connection is in order to feed back the liquid level signal, drainage pipe through drainage solenoid valve with the water tank intercommunication, moisturizing pipeline through moisturizing solenoid valve with the water tank intercommunication, the PLC switch board is used for controlling drainage solenoid valve moisturizing solenoid valve switch on, shutoff;

when the water temperature detected by the temperature sensor exceeds a preset value, the PLC control cabinet controls the drainage electromagnetic valve to be conducted, and when the liquid level sensor detects that the liquid level of the water tank is reduced to the automatic water supplementing liquid level, the PLC control cabinet detects an automatic water supplementing liquid level action electric signal of the liquid level sensor and sends out an instruction to control the water supplementing electromagnetic valve to be conducted, and external cooling water can be automatically added into the water tank; when the water temperature detected by the temperature sensor is lower than a preset value, the PLC control cabinet controls and detects the high liquid level action electric signal of the liquid level sensor, and sends out an instruction to control the water supplementing valve to cut off, and the water supplementing valve stops water supplementing.

Preferably, the drainage pipeline is a three-way pipeline, and comprises a first drainage pipeline, a second drainage pipeline and a third drainage pipeline, wherein the first drainage pipeline is connected with the second drainage pipeline through the third drainage pipeline, the third drainage pipeline is provided with a water outlet, the input end of the first drainage pipeline and the input end of the second drainage pipeline are respectively communicated with the water outlet of the water tank, the first drainage pipeline is provided with a bypass drainage valve, and the second drainage pipeline is provided with a drainage electromagnetic valve maintenance valve and a drainage electromagnetic valve along the water flow direction.

Preferably, the PLC control cabinet is fixed on the outer side of the water tank.

Preferably, the water tank is rectangular or cylindrical in shape.

Preferably, the temperature sensor is an insertion contact type temperature sensor and is connected with the PLC control cabinet through a cable.

Preferably, the PLC control cabinet comprises a data PLC central processing unit, and the temperature sensor is connected with the data PLC central processing unit through a cable.

Due to the adoption of the technical scheme, the beneficial effects obtained by the utility model include: because the water inlet end of the high-pressure pump is always communicated with the water tank, the water temperature of the water tank is controlled so as to achieve the effects of water at the inlet end of the high-pressure pump and the working water temperature of the high-pressure pump, and the high-pressure pump always works at normal temperature. The device has the advantages of simple working principle and structure, water is used as a cooling medium, no additional complex equipment accessories are added in the design, the cost is low, the operation and the use hardly consume energy, the repeatability is high, and no additional side effect is generated. But greatly reduces the equipment damage probability generated by misoperation of key components of the system, reduces the equipment failure rate and greatly prolongs the service life of the system.

Drawings

Fig. 1 is a front view of the device of the present utility model.

Fig. 2 is a top view of the device of the present utility model.

In the figure: 1. a water tank; 2. a PLC control cabinet; 3. a liquid level sensor; 4. a temperature sensor; 5. a water supplementing valve; 6. a bypass drain valve; 7. a drain solenoid valve service valve; 8. a water discharge electromagnetic valve.

Detailed Description

The utility model is further described below with reference to the drawings and examples.

For example, an automatic water supplementing and cooling device for high-pressure fine water mist comprises a PLC control cabinet 2, a water tank 1, a drainage pipeline and a water supplementing pipeline, wherein a temperature sensor 4 is arranged at the bottom in the water tank, the temperature sensor 4 is used for sending detected water temperature to the PLC control cabinet 2, a liquid level sensor 3 is arranged in the water tank 1, the liquid level sensor 3 is electrically connected with the PLC control cabinet 2 to feed back a liquid level signal, the drainage pipeline is communicated with the water tank 1 through a drainage electromagnetic valve 8, the water supplementing pipeline is communicated with the water tank through a water supplementing electromagnetic valve 5, and the PLC control cabinet 2 is used for controlling the connection and disconnection of the drainage electromagnetic valve 8 and the water supplementing electromagnetic valve 5; when the water temperature detected by the temperature sensor 4 exceeds a preset value, the PLC control cabinet 2 controls the water draining electromagnetic valve 8 to be conducted, until the liquid level sensor detects that the liquid level of the water tank is reduced to the automatic water supplementing liquid level, the PLC control cabinet 2 controls the water supplementing electromagnetic valve 5 to be conducted, external cooling water can be automatically added into the water tank 1, the PLC control cabinet detects a high liquid level action electric signal of the liquid level sensor, and sends out an instruction to cut off the power of the water supplementing electromagnetic valve; after the cooling water is added into the water tank, when the water temperature detected by the temperature sensor is lower than a preset value, the PLC control cabinet 2 controls the water discharge electromagnetic valve to cut off. It should be understood that the present utility model does not improve the procedure, and the control procedure according to the present utility model is known in the art.

When the water tank is used, after the water mist pump set is started by mistake due to abnormal conditions, the water temperature in the water tank 1 rises, and when the temperature sensor 4 detects that the water temperature is higher than 45 ℃, the water drainage electromagnetic valve 8 is automatically opened; during the period that the drainage solenoid valve 8 is opened, the liquid level of the water tank 1 gradually drops, when the liquid level is as low as the automatic water replenishing liquid level, the liquid level sensor 3 feeds back the water replenishing liquid level signal, the drainage solenoid valve 8 is automatically closed, the water replenishing solenoid valve 5 is automatically opened, external cooling water can be automatically added into the water tank 1, the automatic cooling effect of the water tank 1 is achieved, and when the water tank is at the high liquid level, the water replenishing solenoid valve 5 is automatically closed. The high-pressure pump is kept to operate in a safe and reliable temperature environment all the time without damage, and the high-pressure pump is kept to operate in the safe and reliable temperature environment all the time.

As shown in figure 1, a PLC control cabinet 2 is arranged on the side face of a water tank 1, a temperature sensor 4 is arranged at the bottom, a liquid level sensor 3 is arranged on the inner side wall, and a water discharge control valve is arranged on a horizontal pipeline at the lower part of a water discharge outlet.

As one embodiment of the present utility model, the PLC control cabinet is fixed to the outside of the water tank. The water tank is rectangular or cylindrical in shape. The temperature sensor is an insertion contact type temperature sensor and is connected with the PLC control cabinet through a cable. For example, the PLC control cabinet comprises a data PLC central processing unit, and the temperature sensor is connected with the data PLC central processing unit through a cable. The contact type temperature sensor is inserted, so that the circuit is prevented from being complicated, and meanwhile, the signal strength is ensured; the inserted contact type temperature sensor is provided with a waterproof shell, and has long service life and good waterproof property.

Fig. 1 is a front view, and fig. 2 is a plan view. As shown in figure 2, the water replenishing valve 5 is arranged on the top side of the water tank 1, the horizontal three-way pipeline is arranged at the bottom water outlet, one way is provided with the bypass drain valve 6, the other way is provided with the 1 drainage electromagnetic valve maintenance valve 7 and the drainage electromagnetic valve 8, and finally two ways of drainage are summarized to one way of drainage. When the water tank 1 needs to be cleaned or emptied, the bypass drain valve 6 is opened to drain water; when the drainage solenoid valve 8 fails, the drainage solenoid valve maintenance valve 7 is closed, so that the drainage solenoid valve 8 can be maintained without affecting the operation of equipment or evacuating water in the water tank 1.

Specifically, drainage pipeline is three routes logical pipeline, including first drainage pipeline, second drainage pipeline and third drainage pipeline, first drainage pipeline with the second drainage pipeline passes through the third drainage pipeline and is connected, first drainage pipeline's input reaches the second drainage pipeline's input respectively with the outlet intercommunication of water tank, wherein, first drainage pipeline installs the bypass drain valve, the second drainage pipeline is installed drainage solenoid valve maintenance valve in proper order along the rivers direction drainage solenoid valve, the third drainage pipeline is equipped with the outlet.

The foregoing description of the embodiments is provided to facilitate the understanding and appreciation of the utility model by those skilled in the art. It will be apparent to those skilled in the art that various modifications can be made to these teachings and that the general principles described herein may be applied to other embodiments without the need for inventive faculty. Therefore, the utility model is not limited to the above description and the description of the embodiments, and those skilled in the art, based on the disclosure of the utility model, should make improvements and modifications without departing from the scope of the utility model.

Claims (5)

1. The utility model provides a high pressure water mist automatic water supply cooling device which characterized in that, includes PLC switch board, water tank, drain pipe and moisturizing pipeline, be equipped with temperature sensor and liquid level sensor in the water tank, temperature sensor and liquid level sensor with PLC switch board electric connection is in order to feed back liquid level signal and temperature signal, the drain pipe passes through drainage solenoid valve with the water tank intercommunication, moisturizing pipeline passes through moisturizing solenoid valve with the water tank intercommunication, the PLC switch board is according to temperature signal and liquid level signal control drainage solenoid valve, moisturizing solenoid valve switch on, shutoff;

the drainage pipeline is a three-way pipeline, and comprises a first drainage pipeline, a second drainage pipeline and a third drainage pipeline, wherein the first drainage pipeline is connected with the second drainage pipeline through the third drainage pipeline, the input end of the first drainage pipeline and the input end of the second drainage pipeline are respectively communicated with the water outlet of the water tank, the first drainage pipeline is provided with a bypass drainage valve, the second drainage pipeline is provided with a drainage electromagnetic valve maintenance valve along the water flow direction in sequence, and the third drainage pipeline is provided with a water outlet.

2. The automatic water supply cooling device for high-pressure fine mist according to claim 1, wherein the PLC control cabinet is fixed to the outside of the water tank.

3. The automatic water supply cooling device for high-pressure fine mist according to claim 1 or 2, wherein the water tank is rectangular or cylindrical in shape.

4. The automatic water supply cooling device for high-pressure fine water mist according to claim 1, wherein the temperature sensor is an insertion contact type temperature sensor and is connected with the PLC control cabinet through a cable.

5. The automatic water supply cooling device for high-pressure fine water mist according to claim 1, wherein the PLC control cabinet comprises a data PLC central processing unit, and the temperature sensor and the liquid level sensor are respectively connected with the data PLC central processing unit through cables.