CN210814605U - Explosion-proof type cold machine of doing - Google Patents
Explosion-proof type cold machine of doing Download PDFInfo
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- CN210814605U CN210814605U CN201921578244.2U CN201921578244U CN210814605U CN 210814605 U CN210814605 U CN 210814605U CN 201921578244 U CN201921578244 U CN 201921578244U CN 210814605 U CN210814605 U CN 210814605U
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Abstract
An explosion-proof type cold drying machine comprises a refrigeration cycle device and a drying pipeline; the drying pipeline sequentially passes through a precooler, an evaporator of a refrigeration cycle device, a gas-liquid separator and an electronic drainer; the refrigeration cycle device comprises an explosion-proof refrigerant compressor, an evaporator, a condenser and a thermal expansion valve; the explosion-proof device comprises an explosion-proof control electrical box, an explosion-proof fan and an explosion-proof refrigerant compressor which are electrically connected; the explosion-proof control electric box comprises a cast aluminum alloy box shell and a cast aluminum alloy box door, wherein rubber sealing rings are arranged on the periphery of the cast aluminum alloy box shell; the explosion-proof fan comprises an explosion-proof motor, and the explosion-proof motor is provided with an explosion-proof shell. The utility model discloses the material and the structure of electrified part have explosion-proof treatment in the equipment, have explosion-proof function, make the cold dry machine can normally carry out dry air moisture work in the dangerous place that has inflammable and explosive gas mixed air.
Description
Technical Field
The utility model relates to a cold machine of doing makes the field, especially an explosion-proof type cold machine of doing.
Background
The cold dryer is a short name of a freezing type compressed air dryer and belongs to an air source processing element in a pneumatic system. In the prior art, a refrigeration system is utilized by a refrigeration machine to cool special gas to a certain temperature, and then the contained water is separated out and discharged through a drain valve, so that the gas reaches the required drying dew point. At present, the traditional cold dryer does not have an explosion-proof function, and if propane gas, ethylene gas and hydrogen gas exist or possibly exist in the working environment, the cold dryer cannot normally dry air in an explosion dangerous place formed by mixing combustible gas and air.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above disadvantages of the prior art, the present invention provides an explosion-proof type cooling and drying machine with explosion-proof function.
The utility model provides a technical scheme that its technical problem adopted is: an explosion-proof type cold-dry machine comprises a refrigeration cycle device and a drying pipeline;
the drying pipeline sequentially passes through a precooler, an evaporator of a refrigeration cycle device, a gas-liquid separator and an electronic drainer;
the refrigeration cycle device comprises an explosion-proof refrigerant compressor, an evaporator, a condenser and a thermal expansion valve;
the explosion-proof device comprises an explosion-proof control electrical box, an explosion-proof fan and an explosion-proof refrigerant compressor which are electrically connected;
the explosion-proof control electric box comprises a cast aluminum alloy box shell and a cast aluminum alloy box door, wherein rubber sealing rings are arranged on the periphery of the cast aluminum alloy box shell;
the explosion-proof fan comprises an explosion-proof motor, and the explosion-proof motor is provided with an explosion-proof shell.
As a further improvement of the utility model: the cast aluminum alloy box shell is provided with an energy absorption cavity and an electrical appliance cavity, and an energy absorption plate for spacing is arranged between the energy absorption cavity and the electrical appliance cavity.
As a further improvement of the utility model: the explosion-proof shell is internally provided with an explosion-proof layer, and the inner side of the explosion-proof layer is provided with a fireproof layer.
As a further improvement of the utility model: the anti-explosion type refrigerant compressor is characterized by further comprising a gas outlet pipeline, a pressure gauge, a refrigerant low pressure gauge and a refrigerant high pressure gauge, wherein the gas outlet pipeline, the pressure gauge, the refrigerant low pressure gauge and the refrigerant high pressure gauge are arranged on the precooler, the pressure gauge is connected to the gas outlet pipeline, the refrigerant low pressure gauge is located between the evaporator and the anti-explosion type refrigerant compressor pipeline, and the refrigerant high pressure gauge is located between the evaporator and the thermostatic expansion valve pipeline.
Compared with the prior art, the beneficial effects of the utility model are that: the material and structure of the charged part in the equipment are processed by explosion-proof treatment, so that the cold dryer has an explosion-proof function, and can normally dry air moisture in a dangerous place with flammable and explosive gas mixed air.
Drawings
Fig. 1 is a schematic view of the working principle of the present invention.
Fig. 2 is a schematic view of the internal structure of the present invention.
Fig. 3 is the structural schematic diagram of the explosion-proof electronic box of the present invention.
Fig. 4 is a schematic diagram of the structure of the energy absorbing plate of the present invention.
FIG. 5 is the schematic diagram of the structure of the flame-proof enclosure of the present invention.
The reference numbers illustrate: 1-a precooler, 2-an evaporator, 3-a gas-liquid separator, 4-an electronic drainer, 21-an explosion-proof refrigerant compressor, 22-a condenser, 23-a thermal expansion valve, 31-a compressed gas outlet, 32-a compressed gas inlet, 33-a pressure gauge, 34-a refrigerant high pressure gauge, 35-a refrigerant low pressure gauge, 41-an explosion-proof control electric box, 42-an explosion-proof fan, 51-a cast aluminum alloy box shell, 52-a rubber sealing ring, 53-an energy absorption cavity, 54-an electric appliance cavity, 55-an energy absorption plate, 56-a fire barrier, 57-a steel plate, 58-a through hole, 61-a shell, 62-an explosion-proof layer and 63-a fire-proof layer.
Detailed Description
The invention will now be further described with reference to the accompanying drawings, in which:
referring to fig. 1, an explosion-proof type refrigeration dryer includes a refrigeration cycle device and a drying pipeline;
the drying pipeline sequentially passes through a precooler 1, an evaporator 2 of a refrigeration cycle device, a gas-liquid separator 3 and an electronic drainer 4;
the refrigeration cycle device comprises an explosion-proof refrigerant compressor 21, an evaporator 2, a condenser 22 and a thermostatic expansion valve 23;
the explosion-proof type air conditioner further comprises an explosion-proof device, wherein the explosion-proof device comprises an explosion-proof type control electric box 41, an explosion-proof type fan 42 and an explosion-proof type refrigerant compressor 21 which are electrically connected.
In the drying line, the compressed high-temperature, high-pressure, high-moisture gas enters the precooler 1 from the compressed gas inlet 32 from the outside. In the precooler 1, the high-temperature high-pressure water and the gas with high component content exchange heat with the low-temperature dry compressed gas treated by the evaporator 2 and the gas-liquid separator 3, so that the temperature of the high-temperature high-pressure water and the gas with high component content is reduced, part of water is condensed into liquid, and then the liquid enters the evaporator. In the precooler 1, the temperature of the low-temperature dry compressed gas is improved due to heat exchange, and the phenomenon that the low-temperature dry compressed gas enters other treatment equipment to cause dewing on the outer walls of gas pipes of other treatment equipment due to too low temperature of the outlet gas is avoided. The compressed gas precooled by the precooler 1 enters an evaporator 2, and is cooled to 2-10 ℃ in the evaporator 2 by low-temperature refrigerant liquid in a refrigerating device, so that water vapor in the compressed gas is condensed into liquid water due to supercooling. The cooled dry low-temperature compressed gas and liquid water are introduced into a gas-liquid separator 3, and the compressed gas and liquid are separated. The liquid flows to the electronic drainer 4, and the explosion-proof control electronic box controls the electronic drainer 4 to drain the liquid. The dryness of the low-temperature dry compressed gas separated by the gas-liquid separator 3 reaches the pressure dew point of 2-10 ℃, and then the low-temperature dry compressed gas enters the precooler 1 to exchange heat with the compressed high-temperature high-pressure gas with high moisture content. The low-temperature dried compressed gas is discharged from the compressed gas outlet 31 after the temperature thereof has been raised.
In a refrigeration cycle pipeline, an explosion-proof refrigerant compressor sucks low-temperature and low-pressure refrigerant steam, and discharges high-temperature and high-pressure refrigerant gas after compression. The high-temperature and high-pressure refrigerant gas enters the condenser 22, and is cooled by the condenser to form a high-pressure liquid refrigerant. The high-pressure liquid refrigerant enters the thermostatic expansion valve 23, is throttled by the thermostatic expansion valve 23 to form a low-temperature low-pressure liquid refrigerant, then enters the evaporator 2, and exchanges heat with the precooled compressed gas in the drying device to reduce the temperature of the precooled compressed gas. The low-temperature low-pressure liquid refrigerant after heat exchange is converted into a low-temperature low-pressure gaseous refrigerant due to heat absorption, and then the low-temperature low-pressure gaseous refrigerant is sucked by the explosion-proof refrigerant compressor again for compression, so that the purpose of circulating refrigeration is achieved.
In the explosion-proof device, the explosion-proof control electronic box is mainly used for controlling the explosion-proof refrigerant compressor to start or stop refrigeration, when the explosion-proof refrigerant compressor works for refrigeration, the working process of the condenser 22 emits a large amount of heat, so that the ambient temperature is too high, and therefore the explosion-proof fan also needs to work together with the refrigeration device at the same time, and the flow of air around the condenser 22 is accelerated to dissipate heat.
The explosion-proof control electric box comprises a cast aluminum alloy box shell 51 and a cast aluminum alloy box door, wherein rubber sealing rings 52 are arranged around the cast aluminum alloy box shell 51; the explosion-proof fan 42 comprises an explosion-proof motor, and the explosion-proof motor is provided with an explosion-proof shell.
Explosion-proof electrical equipment, i.e. in an explosion-hazardous environment, is structurally protected from being a source of ignition of explosive mixtures at the installation site due to the formation of sparks, arcs or hazardous temperatures during use. The structure is totally enclosed, even if the explosion is carried out in the electrical equipment, the explosion can not propagate to ignite external explosive gas, thereby eliminating the danger of ignition and explosion. Referring to fig. 2, the explosion-proof electric box includes a cast aluminum alloy box shell 51 and a cast aluminum alloy box door, and rubber sealing rings 52 are disposed around the cast aluminum alloy box shell to enhance the sealing performance of the box door and prevent external explosive and flammable gases from entering the box body; the energy absorption plate 55 is arranged in the box body, the box body is divided into a plurality of energy absorption cavities 53 and electrical appliance cavities 54 by the energy absorption plate 55, the energy absorption cavities 53 and the electrical appliance cavities 54 are arranged in a staggered mode, electrical appliances can be installed in the electrical appliance cavities 54, the isolated electrical appliance cavities 54 are prevented from being damaged completely when explosion occurs, and production cost is reduced. Referring to fig. 4, the energy absorbing plate 55 includes a fire barrier 56 and steel plates 57 disposed on two sides of the fire barrier, the steel plates 57 are provided with a plurality of through holes 58, and the through holes 58 are tapered holes with gradually decreasing hole diameters toward the direction of the fire barrier. The energy-absorbing plate 55 has a simple structure, is mainly used for isolating the impact of explosion, and can effectively buffer the impact energy through the tapered holes on the energy-absorbing plate.
The explosion-proof fan 42 and the working motor of the explosion-proof refrigerant compressor 21 both adopt explosion-proof shells. Referring to fig. 5, a flame-proof layer 62 is disposed inside a shell 61 of the flame-proof enclosure, and a fireproof layer 63 is disposed inside the flame-proof layer 62. The shell 61 is made of aluminum alloy, and the flame-proof layer 62 is made of polypropylene material. The explosion-proof layer 62 in the shell 61 is mainly used for bearing the pressure caused by the possible explosion of the motor during high-speed operation; the fire-resistant layer 63 inside the casing 61 mainly serves to prevent the combustion inside the casing 61 from spreading outside the casing 61, effectively increasing the safety level. When explosive and flammable gas mixture around the motor enters the motor through the joint surface gaps of the parts of the shell and is in contact with ignition sources such as sparks and electric arcs in the flameproof shell, the flameproof shell can bear the internal explosion pressure and can prevent explosive products from penetrating through the flameproof gaps to ignite the explosive mixture around the motor shell.
Further, the system also comprises a gas outlet pipeline 36, a pressure gauge 33, a refrigerant low-pressure gauge 35 and a refrigerant high-pressure gauge 34 on the precooler, wherein the pressure gauge 33 is connected to the compressed gas outlet pipeline 36; the refrigerant low pressure gauge 35 is located between the evaporator 2 and the explosion-proof type refrigerant compressor 21 pipeline, and the refrigerant high pressure gauge 34 is located between the evaporator 2 and the thermostatic expansion valve 23 pipeline. The running condition of the refrigeration dryer can be known more intuitively by observing the pressure values of the pressure gauge 33, the refrigerant low pressure gauge 35 and the refrigerant high pressure gauge 34.
In conclusion, after the ordinary skilled in the art reads the document of the present invention, according to the present invention, the technical solution and technical concept of the present invention do not need creative mental labor to make other various corresponding transformation schemes, which all belong to the protection scope of the present invention.
Claims (4)
1. An explosion-proof type cold dryer comprises a refrigeration cycle device and a drying pipeline, wherein the drying pipeline sequentially passes through a precooler, an evaporator of the refrigeration cycle device, a gas-liquid separator and an electronic drainer;
the method is characterized in that: the refrigeration cycle device comprises an explosion-proof refrigerant compressor, an evaporator, a condenser and a thermal expansion valve which are connected in sequence;
the explosion-proof device comprises an explosion-proof control electrical box, an explosion-proof fan and an explosion-proof refrigerant compressor which are electrically connected;
the explosion-proof control electric box comprises a cast aluminum alloy box shell and a cast aluminum alloy box door, wherein rubber sealing rings are arranged on the periphery of the cast aluminum alloy box shell;
the explosion-proof fan comprises an explosion-proof motor, and the explosion-proof motor is provided with an explosion-proof shell.
2. The explosion-proof type cool dryer according to claim 1, characterized in that: the cast aluminum alloy box shell is provided with an energy absorption cavity and an electrical appliance cavity, and an energy absorption plate for spacing is arranged between the energy absorption cavity and the electrical appliance cavity.
3. The explosion-proof type cool dryer according to claim 1, characterized in that: the explosion-proof shell is internally provided with an explosion-proof layer, and the inner side of the explosion-proof layer is provided with a fireproof layer.
4. The explosion-proof type cool dryer according to claim 1, characterized in that: the anti-explosion type refrigerant compressor is characterized by further comprising a gas outlet pipeline, a pressure gauge, a refrigerant low pressure gauge and a refrigerant high pressure gauge, wherein the gas outlet pipeline, the pressure gauge, the refrigerant low pressure gauge and the refrigerant high pressure gauge are arranged on the precooler, the pressure gauge is connected to the gas outlet pipeline, the refrigerant low pressure gauge is located between the evaporator and the anti-explosion type refrigerant compressor pipeline, and the refrigerant high pressure gauge is located between the evaporator and the thermostatic expansion valve pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921578244.2U CN210814605U (en) | 2019-09-20 | 2019-09-20 | Explosion-proof type cold machine of doing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921578244.2U CN210814605U (en) | 2019-09-20 | 2019-09-20 | Explosion-proof type cold machine of doing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210814605U true CN210814605U (en) | 2020-06-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921578244.2U Active CN210814605U (en) | 2019-09-20 | 2019-09-20 | Explosion-proof type cold machine of doing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210814605U (en) |
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2019
- 2019-09-20 CN CN201921578244.2U patent/CN210814605U/en active Active
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