CN220911737U - Oil-gas-liquid three-phase self-separating flow tube device - Google Patents

Abstract

The utility model belongs to the technical field of compressors, and particularly discloses an oil-gas-liquid three-phase self-separating flow tube device which comprises a first pipeline, a second pipeline, a U-shaped tube, a liquid-gas extraction flow tube and an oil-gas extraction tube, wherein the U-shaped tube comprises a bottom tube and side tubes at two sides, the first pipeline is connected with an outlet of an evaporator, the second pipeline is connected with an inlet of the compressor, the side tubes at two sides of the U-shaped tube are respectively connected with the first pipeline and the second pipeline, two sides of the liquid-gas extraction tube are respectively communicated with the bottom tube of the U-shaped tube and the side tubes connected with the second pipeline, and the oil-gas extraction tube is positioned on the inner wall of the liquid-gas extraction tube and the bottom of the oil-gas extraction tube stretches into the bottom tube of the U-shaped tube. The large-scale gas-liquid separator on the existing refrigerating system is replaced, the safety valve suite matched with the large-scale gas-liquid separator is omitted, the number of pressure containers in the refrigerating unit is reduced, and meanwhile, the technical scheme has no redundant invalid volume, so that the refrigerant filling quantity of the system is reduced.

Description

Oil-gas-liquid three-phase self-separating flow tube device

Technical Field

The utility model belongs to the technical field of compressors, and particularly relates to an oil-gas-liquid three-phase self-separation flow tube device.

Background

The existing compressor return air pipeline is characterized in that the change of the refrigerant flow of the compressor system is caused by the change of the working condition of an air conditioner, so that the liquid refrigerant is not completely evaporated when the compressor returns air, and therefore part of the liquid refrigerant enters the compressor return air pipeline, once the compressor sucks the liquid refrigerant, the compressor is impacted, the compressor is caused to be damaged, and even the compressor motor is burnt out. The flow of the existing return air pipeline for blocking the liquid refrigerant is as follows: as shown in fig. 2, the refrigerant enters the evaporator 1 through the zi1 inlet, exchanges heat with chilled water and is evaporated, then is discharged from the zo1 outlet, enters the gas-liquid separator through the Qi1 inlet of the gas-liquid separator 11 through the refrigerating pipeline to perform gas-liquid separation, and then returns the gaseous refrigerant to the pi1 air suction port of the compressor 2 through the Qo1 outlet of the gas-liquid separator 11. This circuit requires the use of a pressure vessel (gas-liquid separator) and the configuration of a pressure vessel safety valve, resulting in increased costs, larger space occupation, and smaller vessel effective volume.

Disclosure of utility model

The utility model aims to provide an oil-gas-liquid three-phase self-separation flow tube device, which aims to solve the problem that a liquid refrigerant is blocked by arranging a gas-liquid separator in the existing return air pipeline.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides an oil gas liquid three-phase is from flow tube ware, includes first pipeline, second pipeline, U type pipe, liquid gas extraction flow tube and oil gas extraction pipe, and the U type pipe includes the side tube of bottom tube and both sides, the exit linkage of first pipeline and evaporimeter, the second pipeline is connected with the inlet connection of compressor, the side tube of U type pipe both sides respectively with first pipeline and second pipeline connection, the both sides of liquid gas extraction pipe respectively with the bottom tube of U type pipe and with the side tube intercommunication of second pipeline connection, the oil gas extraction pipe is located the bottom of the inner wall of liquid gas extraction pipe and oil gas extraction pipe stretches into the bottom of U type pipe in, the bottom of oil gas extraction pipe is less than the sensor.

Further, a sensor is arranged at the upper part of the U-shaped pipe and used for sensing the liquid level of the liquid refrigerant at the bottom of the U-shaped pipe.

Further, a third pipeline is further arranged at the bottom of the U-shaped pipe, a valve is arranged on the third pipeline, and the third pipeline is used for injecting high-temperature and high-pressure gaseous refrigerant into the U-shaped pipe.

Further, the valve adopts an electromagnetic valve, and the valve and the sensor are respectively connected with the controller.

Further, the sensor adopts a photoelectric switch.

The working principle of the technical scheme is as follows: the refrigerant enters the evaporator through an inlet of the evaporator to exchange heat with chilled water for evaporation after throttling, then enters the U-shaped pipe through the first pipeline, the liquid state is reserved at the bottom of the U-shaped pipe after the gas-liquid mixed refrigerant enters the U-shaped pipe, and the gas state enters the inlet of the compressor through the second pipeline. The gaseous flow passage at the bottom of the U-shaped pipe is gradually reduced, and part of gaseous refrigerant is required to be extracted into the second pipeline through the liquid-gas extraction flow pipe and then returned to the inlet of the compressor. When the liquid refrigerant storage reaches a certain liquid level of the U-shaped pipe, the refrigerating oil and the liquid refrigerant are in an oil liquid mixed state, the refrigerating oil floats on the top surface of the liquid refrigerant, at the moment, the refrigerating oil can be pumped into an inlet of the compressor through an oil gas pumping pipe and is mixed with the gaseous refrigerant to return to the compressor, the flow area of the gaseous refrigerant can be continuously reduced after the liquid refrigerant level is further increased, after a sensor triggers a signal, the signal is transmitted to a controller, the controller opens a valve, the valve is opened and then the gaseous refrigerant with high temperature and high pressure is introduced into the U-shaped pipe, so that the liquid refrigerant is helped to be directly evaporated and gasified, the inlet safety of the compressor is ensured, and the compressor motor is protected from being burnt.

The beneficial effects of this technical scheme lie in:

The oil-gas-liquid three-phase self-separating flow tube device replaces a large-scale gas-liquid separator on the existing refrigerating system, meanwhile, a safety valve sleeve matched with the oil-gas-liquid self-separating flow tube device is omitted, the number of pressure containers in the refrigerating unit is reduced, and meanwhile, the technical scheme has no redundant invalid volume, so that the refrigerant filling amount of the system is reduced. Meanwhile, high-temperature high-pressure gaseous refrigerant is introduced into the oil-gas-liquid three-phase self-separation flow tube device to assist in evaporation, so that the safety of air return of the compressor is greatly improved.

Drawings

FIG. 1 is a schematic diagram of the connection of a three-phase oil-gas-liquid separator flow tube device according to the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

Fig. 3 is a schematic diagram of a connection for blocking liquid refrigerant by using a gas-liquid separator in the background art.

Detailed Description

The following is a further detailed description of the embodiments:

Reference numerals in the drawings of the specification include: the device comprises an evaporator 1, a compressor 2, a first pipeline 3, a second pipeline 4, a U-shaped pipe 5, a third pipeline 6, a valve 7, a sensor 8, a liquid-gas extraction flow pipe 9, an oil-gas extraction pipe 10 and a gas-liquid separator 11.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment is basically as shown in the accompanying figures 1-2: the utility model provides an oil gas liquid three-phase self-separating flow tube ware, includes first pipeline 3, second pipeline 4, U pipe 5, liquid gas extraction flow tube 9 and oil gas extraction pipe 10, is equipped with the extraction valve on liquid gas extraction flow tube 9 and the oil gas extraction pipe 10 respectively, and the extraction valve is connected with the controller. The U-shaped pipe 5 comprises a bottom pipe and side pipes on two sides, the first pipeline 3 is connected with a Zo1 outlet of the evaporator 1, the second pipeline 4 is connected with a Pi1 inlet of the compressor 2, the side pipes on two sides of the U-shaped pipe 5 are respectively connected with the first pipeline 3 and the second pipeline 4, two sides of the liquid-gas extraction pipe 9 are respectively communicated with the bottom pipe of the U-shaped pipe 5 and the side pipes connected with the second pipeline 4, the oil-gas extraction pipe 10 is positioned on the inner wall of the liquid-gas extraction pipe 9, and the bottom of the oil-gas extraction pipe 10 stretches into the bottom pipe of the U-shaped pipe 5. The upper portion of U type pipe 5 is equipped with sensor 8, and sensor 8 is used for the liquid level of the liquid refrigerant of response U type pipe 5 bottom, and the bottom of oil gas extraction pipe 10 is less than sensor 8. The bottom of the U-shaped pipe 5 is also provided with a third pipeline 6, the third pipeline 6 is provided with a valve 7, the third pipeline 6 is used for injecting high-temperature and high-pressure gaseous refrigerant into the U-shaped pipe 5, and the third pipeline 6 is connected with the exhaust end of the compressor. The valve 7 adopts an electromagnetic valve, the sensor 8 adopts a photoelectric switch, and the valve 7 and the sensor 8 are respectively connected with the controller.

The specific implementation process is as follows:

The refrigerant enters the evaporator 1 through the Zi1 inlet of the evaporator 1 after throttling, exchanges heat with chilled water and evaporates, then enters the U-shaped pipe 5 from the Zo1 outlet of the evaporator 1 through the first pipeline 3, the liquid state is reserved at the bottom of the U-shaped pipe 5 after the gas-liquid mixed refrigerant enters the U-shaped pipe 5, and the gas state enters the inlet of the compressor 2 through the second pipeline 4. The gaseous flow passage at the bottom of the U-shaped pipe 5 gradually decreases, and part of the gaseous refrigerant needs to be extracted through the liquid-gas extraction flow pipe 9 to enter the second pipeline 4 and then returns to the Pi1 inlet of the compressor 2. When the liquid refrigerant storage reaches a certain liquid level of the U-shaped pipe 5, the refrigerating oil and the liquid refrigerant are in an oil-liquid mixed state, the refrigerating oil floats on the top surface of the liquid refrigerant, at the moment, the refrigerating oil can be pumped into a Pi1 inlet of the compressor 2 through the oil-gas pumping pipe 10 and mixed with the gaseous refrigerant to return to the compressor 2, the flow area of the gaseous refrigerant can be continuously reduced after the liquid refrigerant level is further increased, after a signal is triggered by the sensor 8, the signal is transmitted to the controller, the valve 7 is opened by the controller, the gaseous refrigerant with high temperature and high pressure is introduced into the U-shaped pipe 5 after the valve 7 is opened, the direct evaporation and gasification of the liquid refrigerant are helped, the quantity of the liquid refrigerant with return air is reduced, the safety of the inlet of the compressor 2 is ensured, and the motor of the compressor 2 is protected from being burnt.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The foregoing is merely an embodiment of the present utility model, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application date or before the priority date, can know all the prior art in the field, and has the capability of applying the conventional experimental means before the date, and a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present utility model, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present utility model, and these should also be considered as the scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the utility of the patent. The protection scope of the present utility model is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (5)

1. The utility model provides an oil gas liquid three-phase self-separation flow tube ware which characterized in that: including first pipeline (3), second pipeline (4), U type pipe (5), liquid gas extraction flow tube (9) and oil gas extraction pipe (10), U type pipe (5) are including the side tube of end pipe and both sides, the exit linkage of first pipeline (3) and evaporimeter (1), the access connection of second pipeline (4) and compressor (2), the side tube of U type pipe (5) both sides is connected with first pipeline (3) and second pipeline (4) respectively, the both sides of liquid gas extraction pipe respectively with the end pipe of U type pipe (5) and with the side tube intercommunication that second pipeline (4) are connected, oil gas extraction pipe (10) are located the inner wall of liquid gas extraction pipe and the bottom of oil gas extraction pipe (10) stretches into in the end pipe of U type pipe (5).

2. The oil-gas-liquid three-phase self-separating flow tube device according to claim 1, wherein: the upper portion of U type pipe (5) is equipped with sensor (8), sensor (8) are used for the response U type pipe (5) bottom liquid refrigerant's liquid level, the bottom of oil gas extraction pipe (10) is less than sensor (8).

3. The oil-gas-liquid three-phase self-separating flow tube device according to claim 2, wherein: the bottom of U type pipe (5) still is equipped with third pipeline (6), be equipped with valve (7) on third pipeline (6), third pipeline (6) are used for to pour into high temperature high pressure's gaseous refrigerant into in U type pipe (5).

4. A three-phase self-separating flow tube device for oil, gas and liquid according to claim 3, wherein: the valve (7) adopts an electromagnetic valve, and the valve (7) and the sensor (8) are respectively connected with the controller.

5. The oil-gas-liquid three-phase self-separating flow tube device according to claim 2, wherein: the sensor (8) adopts a photoelectric switch.