CN217584959U - Filling maintenance device for mixed refrigerant refrigeration system - Google Patents
Filling maintenance device for mixed refrigerant refrigeration system Download PDFInfo
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- CN217584959U CN217584959U CN202220747884.7U CN202220747884U CN217584959U CN 217584959 U CN217584959 U CN 217584959U CN 202220747884 U CN202220747884 U CN 202220747884U CN 217584959 U CN217584959 U CN 217584959U
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Abstract
The utility model discloses a fill and annotate maintenance device for mixed refrigerant refrigerating system, including refrigerating system, filling system, refrigerating system includes compressor, evaporimeter, condenser, throttling arrangement, maintains special three-way valve, and compressor, condenser, throttling arrangement, evaporimeter connect gradually, and two of them interfaces of maintaining special three-way valve communicate with compressor and evaporimeter respectively, and the other interface of maintaining special three-way valve is connected with filling system; the filling system comprises a first pipeline and a second pipeline, the first pipeline comprises a first connecting pipe and a refrigerant tank body, a first stop valve and a first pressure measuring mechanism are arranged on the first connecting pipe, the second pipeline comprises a second connecting pipe and a vacuum pump, a second stop valve and a second pressure measuring mechanism are arranged on the second connecting pipe, and the first pipeline is communicated with the second pipeline and is communicated with a third connecting pipe and a connector of a special maintenance three-way valve. The utility model provides high maintenance security and convenience and refrigerating system's reliability.
Description
Technical Field
The utility model belongs to the technical field of the refrigeration plant maintenance technique and specifically relates to a fill notes maintenance device for mixing refrigerant refrigerating system.
Background
With the aging of the refrigeration technology, the function of ultra-low temperature refrigeration or quick freezing refrigeration is popular among many users. In order to realize the functions of ultralow temperature refrigeration or quick-freezing refrigeration, a refrigerant circulating pipeline of the refrigeration equipment can be filled with mixed refrigerant comprising two or more refrigerants. The refrigeration equipment is used for carrying out ultralow-temperature refrigeration or quick-freezing refrigeration by utilizing the characteristic that different refrigerants in the mixed refrigerant have different evaporation temperatures and evaporating the refrigerant with lower evaporation temperature.
In the traditional refrigeration maintenance, firstly, the refrigerant of the whole refrigeration system needs to be emptied, the refrigeration system needs to be vacuumized again, wherein the operation of fire is repeatedly carried out, secondly, the weight of the refrigerant is weighed according to a nameplate, and the quality of the refrigerant filled is controlled by an electronic scale. The weighing method is adopted, the time is long, the cost is high, the mixed refrigerant can not be filled sequentially, the proportion of the mixed working medium is correct, the refrigeration performance is easy to be reduced, even the service life of a compressor is damaged, and the maintenance personnel have certain danger to the refrigeration products partially using the hydrocarbon refrigerant at present.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned problem that exists among the prior art, the utility model provides a fill notes maintenance device for mixing refrigerant refrigerating system.
The utility model provides a technical scheme that its technical problem adopted is: a filling and maintaining device for a mixed refrigerant refrigerating system comprises a refrigerating system and a filling system, wherein the refrigerating system comprises a compressor, an evaporator, a condenser, a throttling device and a special maintenance three-way valve, the compressor, the condenser, the throttling device and the evaporator are sequentially connected, two interfaces of the special maintenance three-way valve are respectively communicated with the compressor and the evaporator, and the other interface of the special maintenance three-way valve is connected with the filling system;
the filling system comprises a first pipeline and a second pipeline, the first pipeline comprises a first connecting pipe and a refrigerant tank body, a first stop valve and a first pressure measuring mechanism are arranged on the first connecting pipe, the second pipeline comprises a second connecting pipe and a vacuum pump, a second stop valve and a second pressure measuring mechanism are arranged on the second connecting pipe, and the first pipeline is communicated with the second pipeline through a third connecting pipe and communicated with a connector of a three-way valve special for maintenance.
The filling and maintaining device for the mixed refrigerant refrigerating system is characterized in that a filling joint is arranged above the refrigerant tank body and communicated with the first connecting pipe, and a third pressure measuring mechanism is arranged at the filling joint.
According to the filling and maintaining device for the mixed refrigerant refrigerating system, the premixing cabin is arranged between the first connecting pipe and the refrigerant tank bodies, and the premixing cabin is connected with more than two refrigerant tank bodies simultaneously.
The filling and maintaining device for the mixed refrigerant refrigerating system further comprises a control system, wherein the control system comprises a stop valve control unit and a system pressure receiving module, and the stop valve control unit is electrically connected with the system pressure receiving module.
In the filling and maintaining device for the mixed refrigerant refrigeration system, the first stop valve, the second stop valve and the stop valve control unit are electrically connected, and the first pressure measuring mechanism, the second pressure measuring mechanism and the third pressure measuring mechanism are electrically connected with the system pressure receiving module.
Foretell a fill and annotate maintenance device for mixing refrigerant refrigerating system, first pipeline is kept away from maintenance special three-way valve one end and is provided with the needle valve and connects, fill and annotate and connect and can realize quick butt joint with the needle valve.
The utility model has the advantages that the utility model adds the special three-way valve for maintenance in the refrigeration system pipeline, avoids the fire-driving operation process required in the evacuation perfusion operation, and improves the maintenance safety and convenience; a premixing cabin is added in the mixed refrigerant system, the mixing proportion of each refrigerant is accurately matched, and the reliability of the refrigerating system is improved.
Drawings
The present invention will be further explained with reference to the drawings and examples.
FIG. 1 is a schematic view of the connection relationship of the present invention;
fig. 2 is a schematic view of the refrigerant tank of the present invention.
In the figure, 1, a throttling device, 2, a condenser, 3, a compressor, 4, a maintenance special three-way valve, 5, a third connecting pipe, 6, a first connecting pipe, 7, a first stop valve, 8, a first pressure measuring mechanism, 9, a refrigerant tank, 10, a vacuum pump, 11, a second pressure measuring mechanism, 12, a second stop valve, 13, a second connecting pipe, 14, an evaporator, 15, a third pressure measuring mechanism and 16, a filling joint are arranged.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, the present embodiment discloses a filling and maintaining device for a mixed refrigerant refrigeration system, which includes a refrigeration system and a filling system, wherein the refrigeration system includes a compressor 3, an evaporator 14, a condenser 2, a throttling device 1, and a maintenance-specific three-way valve 4, the compressor, the condenser, the throttling device, and the evaporator are connected in sequence, two of the interfaces of the maintenance-specific three-way valve 4 are respectively communicated with the compressor 3 and the evaporator 14, and the other interface of the maintenance-specific three-way valve 4 is connected with the filling system.
The filling system comprises a first pipeline and a second pipeline, the first pipeline comprises a first connecting pipe 6 and a refrigerant tank body 9, a first stop valve 7 and a first pressure measuring mechanism 8 are arranged on the first connecting pipe 6, the second pipeline comprises a second connecting pipe 13 and an evacuation pump 10, a second stop valve 12 and a second pressure measuring mechanism 11 are arranged on the second connecting pipe 13, and the first pipeline is communicated with the second pipeline through a third connecting pipe 5 and a connector of a special maintenance three-way valve 4.
A filling joint 16 is arranged above the refrigerant tank body 9, the filling joint 16 and a needle valve joint on the first connecting pipe 6 can be in quick butt joint, and a third pressure measuring mechanism 15 is arranged at the filling joint 16, so that the condition of refrigerant in the tank body can be checked in real time. The refrigerant tank body 9 is internally stored with a proper amount of refrigerant to match different models for after-sales maintenance, the refrigerant storage tank body is made of suitable materials, the material strength requirement is met, the collision in the transportation and storage process of the high-pressure refrigerant is avoided to cause damage, and meanwhile, tank body materials which can not react and are not easy to corrode are selected for use aiming at some special refrigerants.
When the refrigerant in the refrigeration equipment to be maintained is mixed refrigerant, a premixing cabin is arranged between the first connecting pipe and the refrigerant tank bodies, the premixing cabin is connected with more than two refrigerant tank bodies at the same time, the mixed refrigerant is mixed in the premixing cabin according to the proportion and then injected into the system, and the proportion of the mixed refrigerant is ensured.
When needs use the utility model discloses the device when maintaining, at first manage to find time and prepare in advance: the compressor is operated at a low speed, the gas seal needle valve of the special three-way valve for maintenance is removed, the refrigerant in the system is discharged, the power operation of the compressor is monitored, and when the power is reduced to be stable, the situation that the refrigerant in the system is basically emptied can be judged.
The second step is managed to find time, close the compressor, install the needle valve of the special three-way valve of maintenance again, connect the filling system, open the second stop valve, open the evacuation pump and manage to find time, this step needs to manage to find time the air in refrigerating system and the filling system, detect when the second pressure measurement mechanism that the pressure in the pipeline reaches 5 pascals of absolute pressure, close second stop valve and evacuation pump, stand for 30 minutes, detect the second pressure measurement mechanism simultaneously, the pressure rise in the pipeline is less than 30 pascals, judge that the system does not have the leak source this moment, can carry out the third step, otherwise need look for the leak source and change the maintenance.
Filling, closing a second stop valve, connecting a first pipeline with a refrigerant tank body, if only a single refrigerant or an azeotropic mixed refrigerant is filled, electrifying a compressor to run at a low rotating speed, opening the first stop valve, filling by using the suction force of the compressor and the pressure difference of the pipeline, simultaneously monitoring the pressure data of a first pressure measuring mechanism and the power of the compressor, checking the data of a third pressure measuring mechanism when detecting that the pressure in the refrigerant tank body is reduced to a certain degree, and judging that the filling is finished when the power of the compressor is stable and the filling requirement is met; annotate and annotate mixed refrigerant and need insert the premix cabin between first pipeline and the refrigerant jar body, the premix cabin is connected with two jar bodies or more jar bodies, and the refrigerant mixes in the premix cabin, guarantees to annotate the proportion of annotating, when the data of a pressure measurement mechanism tend to steadily, can pour into. At this moment, the compressor is electrified and runs at a low rotating speed, the first stop valve is opened, the suction force of the compressor and the pressure difference of a pipeline are utilized to fill, the pressure data of the first pressure measurement mechanism and the power of the compressor are monitored simultaneously, when the pressure in the premixing cabin is detected to be reduced to a certain degree, the data of the third pressure measurement mechanism are checked, when the filling requirement is met, and after the power of the compressor is stable, the completion of filling can be judged.
Fill and annotate the completion back, close first stop valve, the outage, the special three-way valve connection of disconnection maintenance, the maintenance is accomplished, fills the next time and annotates and can continue to use. After the connection is disconnected, the first stop valve and the second stop valve are opened, the pipeline is prevented from being damaged by negative pressure, and dangerous gas is emptied.
In order to increase the utility model discloses maintenance device's intelligence realizes automatic regulation and control, the utility model discloses maintenance device still sets up control system, and control system includes stop valve the control unit, system pressure receiving module, stop valve the control unit and system pressure receiving module electric connection, first stop valve, second stop valve and stop valve the control unit electric connection, first pressure measurement mechanism, second pressure measurement mechanism, third pressure measurement mechanism and system pressure receiving module electric connection. When the pressure sensor is maintained, the first pressure measuring mechanism, the second pressure measuring mechanism and the third pressure measuring mechanism can feed real-time voltage back to the system pressure receiving module, the system pressure receiving module sets each pressure value in advance, and when the pressure value reaches a corresponding set value, the system pressure receiving module sends a signal to the stop valve control unit to control the corresponding stop valve to be opened or closed, so that automatic control is realized.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.
Claims (6)
1. A charge servicing device for a mixed refrigerant refrigeration system, characterized by: the refrigeration system comprises a compressor, an evaporator, a condenser, a throttling device and a special maintenance three-way valve, wherein the compressor, the condenser, the throttling device and the evaporator are sequentially connected;
the filling system comprises a first pipeline and a second pipeline, the first pipeline comprises a first connecting pipe and a refrigerant tank body, a first stop valve and a first pressure measuring mechanism are arranged on the first connecting pipe, the second pipeline comprises a second connecting pipe and a vacuum pump, a second stop valve and a second pressure measuring mechanism are arranged on the second connecting pipe, and the first pipeline is communicated with the second pipeline through a third connecting pipe and communicated with a connector of a three-way valve special for maintenance.
2. A charge servicing device for a mixed refrigerant refrigeration system according to claim 1, wherein a charge joint is provided above said refrigerant tank, said charge joint being in communication with said first connection line, said charge joint being provided with a third pressure measuring mechanism.
3. A filling maintenance device for a mixed refrigerant refrigeration system according to claim 1, wherein a pre-mixing chamber is provided between the first connection pipe and the refrigerant tank, and the pre-mixing chamber is connected with more than two refrigerant tanks at the same time.
4. A charge servicing device for a mixed refrigerant refrigeration system according to claim 1, further comprising a control system, said control system comprising a shut-off valve control unit, a system pressure receiving module, said shut-off valve control unit and system pressure receiving module being electrically connected.
5. The charge maintenance device for the mixed refrigerant refrigeration system as claimed in claim 4, wherein the first and second stop valves are electrically connected to the stop valve control unit, and the first, second and third pressure measuring mechanisms are electrically connected to the system pressure receiving module.
6. A charging and servicing device for a mixed refrigerant refrigeration system according to claim 2, wherein said first line is provided with a needle valve connector at an end thereof remote from said service-specific three-way valve, and said charging and servicing device is capable of being quickly docked with said needle valve connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220747884.7U CN217584959U (en) | 2022-04-02 | 2022-04-02 | Filling maintenance device for mixed refrigerant refrigeration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220747884.7U CN217584959U (en) | 2022-04-02 | 2022-04-02 | Filling maintenance device for mixed refrigerant refrigeration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217584959U true CN217584959U (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220747884.7U Active CN217584959U (en) | 2022-04-02 | 2022-04-02 | Filling maintenance device for mixed refrigerant refrigeration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217584959U (en) |
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2022
- 2022-04-02 CN CN202220747884.7U patent/CN217584959U/en active Active
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