CN219454306U

CN219454306U - Refrigerant bypass device

Info

Publication number: CN219454306U
Application number: CN202320689369.2U
Authority: CN
Inventors: 刘向宇; 刘永才
Original assignee: Shenzhen Jiayuntong Electronics Co Ltd
Current assignee: Shenzhen Jiayuntong Electronics Co Ltd
Priority date: 2023-03-31
Filing date: 2023-03-31
Publication date: 2023-08-01
Anticipated expiration: 2033-03-31

Abstract

The utility model discloses a refrigerant bypass device, which is used for a unit of an absorption chiller and a heat pump device, wherein the unit comprises an absorber and a main refrigerant pipeline, and the refrigerant bypass device comprises: the device comprises a first refrigerant bypass pipeline, an electromagnetic valve, a second refrigerant bypass pipeline, a densimeter and a controller; one end of a first refrigerant bypass pipeline is connected with the refrigerant main pipeline, the other end of the first refrigerant bypass pipeline is connected with the electromagnetic valve, the electromagnetic valve is connected with one end of a second refrigerant bypass pipeline, and the other end of the second refrigerant bypass pipeline is connected with the absorber; the inlet and the outlet of the densimeter are respectively connected with a refrigerant main pipeline; the electromagnetic valve and the densimeter are respectively connected with the controller; the shutdown automatic dilution operation of the lithium bromide absorption unit can be realized, the shutdown time is shortened, and the labor cost and the fuel energy are saved; the automatic refrigerant regeneration function of the lithium bromide absorption unit can be realized, the unit control is more intelligent, the stable operation of the unit is facilitated, the structure is simple, the control is accurate, and the practicability is strong.

Description

Refrigerant bypass device

Technical Field

The utility model relates to the technical field of absorption chillers and heat pump equipment, in particular to a refrigerant bypass device.

Background

In the existing absorption chiller and heat pump equipment, the unit needs to perform dilution operation during shutdown to prevent crystallization of high-temperature solution after shutdown; the dilution operation is to continuously mix the refrigerant liquid with the lithium bromide solution. In the prior art, the water vapor evaporated by the evaporator is absorbed by the absorber solution for dilution, so that the dilution time is long and the energy consumption is high. In addition, when the unit is started and in the running process, the abnormal condition leads the refrigerant liquid to be mixed with the lithium bromide solution, so that the refrigerating or heating capacity of the unit is reduced. Therefore, there is a need to provide a refrigerant bypass device to solve the above-mentioned problems.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a refrigerant bypass device which is used for solving the problems that in the prior art, only an absorber solution is used for absorbing vapor evaporated by an evaporator to dilute the vapor, the dilution time is long, the consumed energy is large, and the refrigerant liquid is mixed with lithium bromide solution due to abnormal conditions, so that the refrigerating or heating capacity of a unit is reduced.

The utility model provides a refrigerant bypass device, which is used for a unit of an absorption chiller and a heat pump device, wherein the unit comprises an absorber and a refrigerant main pipeline, and the refrigerant bypass device comprises: the device comprises a first refrigerant bypass pipeline, an electromagnetic valve, a second refrigerant bypass pipeline, a densimeter and a controller;

one end of the first refrigerant bypass pipeline is connected with the refrigerant main pipeline, the other end of the first refrigerant bypass pipeline is connected with the electromagnetic valve, the electromagnetic valve is connected with one end of the second refrigerant bypass pipeline, and the other end of the second refrigerant bypass pipeline is connected with the absorber; the inlet and the outlet of the densimeter are respectively connected with the refrigerant main pipeline; the electromagnetic valve and the densimeter are respectively connected with the controller.

Further, the first refrigerant bypass line and the second refrigerant bypass line are steel pipes.

Further, the first refrigerant bypass pipeline, the electromagnetic valve and the second refrigerant bypass pipeline are connected in a welding mode.

Further, the first refrigerant bypass pipeline, the second refrigerant bypass pipeline and the unit are connected in a welding mode.

Further, the unit further includes: the evaporator is connected with the generator, the generator is connected with the condenser, the condenser is connected with the evaporator, and the evaporator is connected with the refrigerant main pipeline.

The utility model has the following beneficial effects: according to the refrigerant bypass device, the first refrigerant bypass pipeline, the electromagnetic valve, the second refrigerant bypass pipeline, the densimeter and the controller are arranged, and the controller can realize automatic dilution operation of the lithium bromide absorption unit during shutdown, so that the shutdown time is shortened, and the labor cost and the fuel energy are saved. The automatic refrigerant regeneration function of the lithium bromide absorption unit can be realized through the controller and the densimeter, the unit control is more intelligent, and the stable operation of the unit is facilitated. The refrigerant bypass pipeline device has the advantages of simple structure, accurate control and strong practicability.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a refrigerant bypass device according to the present utility model.

Illustration of: 1-an evaporator; a 2-absorber; a 3-generator; 4-a condenser; 5-a refrigerant main pipeline; 6-a first refrigerant bypass line; 7-an electromagnetic valve; 8-a second refrigerant bypass line; 9-densitometer; 10-controller.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. It should be appreciated that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art, that in the drawings, thicknesses of layers and regions are exaggerated for clarity, and identical reference numerals are used to denote identical devices, and thus descriptions thereof will be omitted.

Referring to fig. 1, an embodiment of the present utility model provides a refrigerant bypass device for a unit of an absorption chiller and a heat pump apparatus, the unit includes an evaporator 1, an absorber 2, a generator 3, a condenser 4 and a refrigerant main pipeline 5, the absorber 2 is connected with the generator 3, the generator 3 is connected with the condenser 4, the condenser 4 is connected with the evaporator 1, and the evaporator 1 is connected with the refrigerant main pipeline 5.

The refrigerant bypass device of the utility model comprises: a first refrigerant bypass line 6, a solenoid valve 7, a second refrigerant bypass line 8, a densitometer 9, and a controller 10. One end of a first refrigerant bypass pipeline 6 is connected with the refrigerant main pipeline 5, the other end of the first refrigerant bypass pipeline 6 is connected with the electromagnetic valve 7, the electromagnetic valve 7 is connected with one end of a second refrigerant bypass pipeline 8, and the other end of the second refrigerant bypass pipeline 8 is connected with the absorber 2. The inlet and the outlet of the densimeter 9 are respectively connected with the refrigerant main pipeline 5, and the densimeter 9 is used for detecting the specific gravity of the refrigerant liquid. The solenoid valve 7 and the densitometer 9 are respectively connected with a controller 10, and the controller 10 is used for receiving detection signals of the densitometer 9 and controlling the opening and closing of the solenoid valve 7.

In this embodiment, the first refrigerant bypass line 6 and the second refrigerant bypass line 8 are small-diameter steel pipes, so that the bypass flow of the refrigerant liquid is stable during unit dilution or refrigerant regeneration, and the impact on unit impact or load variation is small.

The first refrigerant bypass pipeline 6, the electromagnetic valve 7 and the second refrigerant bypass pipeline 8 are connected in a welding mode, and the first refrigerant bypass pipeline 6, the second refrigerant bypass pipeline 8 and the unit are connected.

The working principle of the refrigerant bypass device of the utility model is as follows: when the unit is stopped by pressing down to start the dilution operation, the controller 10 immediately opens the electromagnetic valve 7, and the refrigerant liquid enters the first refrigerant bypass pipeline 6 from the refrigerant main pipeline 5, enters the second refrigerant bypass pipeline 8 through the opened electromagnetic valve 7, and finally enters the absorber 2 to dilute the lithium bromide solution. When the dilution operation is completed, the controller 10 controls the electromagnetic valve 7 to close. When the unit is in an abnormal condition, the solution splashes into the refrigerant liquid to cause the specific gravity of the refrigerant liquid to rise, when the densimeter 9 detects that the specific gravity of the refrigerant liquid is higher than a set value, the controller 10 immediately opens the electromagnetic valve 7, the refrigerant liquid enters the first refrigerant bypass pipeline 6 from the refrigerant main pipeline 5, enters the second refrigerant bypass pipeline 8 through the opened electromagnetic valve 7 and finally enters the absorber 2, then the solution returns to the generator 3 along with the solution of the absorber 2 to evaporate and regenerate, and when the densimeter 9 detects that the specific gravity of the refrigerant is lower than the set value, the controller 10 controls the electromagnetic valve 7 to be closed.

According to the refrigerant bypass device disclosed by the embodiment of the utility model, when the unit is stopped for dilution operation, the refrigerant liquid can be directly conveyed to the absorber through the device, so that the time of reducing the temperature of the solution and the concentration is shortened, and the energy is saved; when the unit is started and in the running process, the refrigerant liquid can be bypassed to the absorber through the device when the abnormal condition leads the refrigerant liquid to be mixed with the lithium bromide solution, and then the refrigerant liquid is regenerated from the absorber solution to the generator, so that the pure refrigerant liquid is obtained, and the stable running of the unit is facilitated.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be capable of being practiced otherwise than as specifically illustrated and described herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A refrigerant bypass device, characterized by a unit for an absorption chiller and a heat pump apparatus, the unit comprising an absorber (2) and a main refrigerant line (5), the refrigerant bypass device comprising: a first refrigerant bypass line (6), a solenoid valve (7), a second refrigerant bypass line (8), a densimeter (9) and a controller (10);

one end of the first refrigerant bypass pipeline (6) is connected with the refrigerant main pipeline (5), the other end of the first refrigerant bypass pipeline (6) is connected with the electromagnetic valve (7), the electromagnetic valve (7) is connected with one end of the second refrigerant bypass pipeline (8), and the other end of the second refrigerant bypass pipeline (8) is connected with the absorber (2); the inlet and the outlet of the densimeter (9) are respectively connected with the refrigerant main pipeline (5); the electromagnetic valve (7) and the densimeter (9) are respectively connected with the controller (10).

2. Refrigerant bypass device according to claim 1, characterized in that the first refrigerant bypass line (6) and the second refrigerant bypass line (8) are steel pipes.

3. Refrigerant bypass device according to claim 1, characterized in that the first refrigerant bypass line (6), the solenoid valve (7) and the second refrigerant bypass line (8) are connected by means of welding.

4. Refrigerant bypass device according to claim 1, characterized in that the first refrigerant bypass line (6), the second refrigerant bypass line (8) are connected to the unit by means of welding.

5. The refrigerant bypass device as recited in claim 1, wherein said unit further comprises: the evaporator comprises an evaporator (1), a generator (3) and a condenser (4), wherein the absorber (2) is connected with the generator (3), the generator (3) is connected with the condenser (4), the condenser (4) is connected with the evaporator (1), and the evaporator (1) is connected with a refrigerant main pipeline (5).