CN217884267U - Air-water cooling and air-air cooling switchable system - Google Patents
Air-water cooling and air-air cooling switchable system Download PDFInfo
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- CN217884267U CN217884267U CN202221120545.2U CN202221120545U CN217884267U CN 217884267 U CN217884267 U CN 217884267U CN 202221120545 U CN202221120545 U CN 202221120545U CN 217884267 U CN217884267 U CN 217884267U
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- 238000001816 cooling Methods 0.000 title claims abstract description 106
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 238000011010 flushing procedure Methods 0.000 claims description 12
- 239000000498 cooling water Substances 0.000 abstract description 15
- 230000008676 import Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The utility model discloses an empty water-cooling and empty cold switchable system of empty, including the heat exchanger, the intake chamber import of heat exchanger is passed through the inlet tube and is connected with the water source, liquid pressure sensor has set gradually on the inlet tube, first electric valve, dross removal mechanism, a temperature sensor, the outlet chamber export of heat exchanger pass through the three-way pipe respectively with outlet pipe and intake-tube connection, be provided with fifth electric valve in the intake pipe, the intake pipe is kept away from one of three-way pipe and is served and be provided with and be located outdoor centrifugal blower, be provided with third electric valve on the outlet pipe, the outlet pipe passes through branch pipe and advances water piping connection, be provided with second electric valve on the branch pipe. This but air-water cooling and air-air cooling switching system can switch under the condition that cooling water source breaks down suddenly for providing air cold source system, can not influence the normal operating of converter.
Description
Technical Field
The utility model relates to a high-voltage inverter air-water cooling system technical field especially relates to an air-water cooling and changeable system of air-air cooling.
Background
The air-water cooling (cooling) system is a closed circulation cooling system mode. Generally consists of the following parts: the air conditioner comprises a closed room, a frequency converter cabinet, an air duct, an axial flow fan and an indoor heat exchanger. The axial flow fan and the indoor heat exchanger are packaged in a cabinet body, and are called as air-water cooling equipment. The device enters air from the axial flow fan and exits air from the exchanger. The hot gas of high-voltage inverter gets into air-water cooling equipment, and air-water cooling equipment utilizes the cooling water, and it is indoor to send gaseous back to the converter to satisfy the cold wind of converter operating temperature and under axial fan's effect with the hot gas cooling through the heat exchanger, forms closed endless cooling form. By adopting the scheme, the operating temperature of the high-voltage frequency converter is met, and meanwhile, the operating environment of the frequency converter is greatly improved, so that the indoor cleanness and dryness can provide safe and stable guarantee for the operation of the frequency converter.
The source (i.e. cold source mode) of cooling water in the air-water cooling system of the high-voltage frequency converter is divided into three types: industrial cooling water, a cooling tower cold source and a low-temperature closed cold source, wherein the industrial cooling water has the lowest cost and is the most preferred. However, no matter which cooling water source is selected, sudden interruption may occur due to some reason, namely the heat exchanger loses the cold source, the traditional water air cooling system loses the function quickly, and finally the frequency converter stops running directly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to the cooling water among the high-voltage inverter air cooling system because certain reason breaks off suddenly, traditional water air cooling system will lose the problem of effect very fast, has provided a changeable system of air cooling and air cooling.
In order to solve the technical problem, the utility model provides an air-water cooling and changeable system of air-air cooling, this air-water cooling and changeable system of air-air cooling includes: the heat exchanger, the intake of the intake chamber of heat exchanger is passed through the inlet tube and is connected with the water source, liquid pressure sensor has set gradually on the inlet tube, first electric valve, dross removal mechanism, a temperature sensor, the play hydroecium export of heat exchanger is through the three-way pipe respectively with outlet pipe and intake-tube connection, be provided with fifth electric valve in the intake pipe, the intake pipe is kept away from one of three-way pipe and is served and be provided with the centrifugal air-blower that is located outdoors, be provided with third electric valve on the outlet pipe, the outlet pipe passes through branch pipe and advances water piping connection, be provided with the second electric valve on the branch pipe.
Wherein, the both ends of dross removal mechanism are provided with water inlet and delivery port respectively, and water inlet and delivery port all are connected with the inlet tube, are provided with back flush inlet on the diapire of dross removal mechanism, are connected with the backwash pipe, are provided with the fourth electric valve on the backwash pipe.
The switchable system of air-water cooling and air-air cooling further comprises a local control box, the local control box is arranged in the same chamber of the heat exchanger, a PLC is installed in the local control box, and the PLC is respectively in telecommunication connection with the first electric valve, the second electric valve, the third electric valve, the fourth electric valve, the fifth electric valve, the liquid pressure sensor, the first temperature sensor and the centrifugal blower.
The air-water cooling and air-air cooling switchable system further comprises a second temperature sensor arranged outdoors, and the second temperature sensor is in telecommunication connection with the PLC.
The air-water cooling and air-air cooling switchable system further comprises auxiliary cooling equipment arranged indoors, and the auxiliary cooling equipment is in telecommunication connection with the PLC.
Wherein, the auxiliary cooling equipment is an electric air conditioner.
Implement the embodiment of the utility model provides a, following beneficial effect has:
the air-water cooling and air-air cooling switchable system can be switched into a system for providing an air cold source under the condition that a cooling water source is suddenly interrupted, and the normal operation of a frequency converter cannot be influenced; by arranging the temperature sensor outdoors and comparing the indoor temperature and the outdoor temperature, the air-water cooling and the air-air cooling are switched, so that more energy is saved; when the heat exchanger is disassembled for overhaul, the air cooling mode can also be used for accelerating the water drainage of the heat exchanger, so that the heat exchanger can quickly meet the overhaul condition, and the time is saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view illustrating the operation of the air-water cooling and air-air cooling switchable system provided by the present invention in an air-water cooling mode;
fig. 2 is a schematic view of the operation of the air-water cooling and air-air cooling switchable system provided by the present invention in the air-air cooling mode;
fig. 3 is a control flow diagram of the switchable air-cooling and air-cooling system provided by the present invention.
In the figure: the device comprises a heat exchanger 1, a water inlet pipe 2, a liquid pressure sensor 3, a first electric valve 4, a deslagging device 5, a first temperature sensor 6, a three-way pipe 7, a water outlet pipe 8, an air inlet pipe 9, a fifth electric valve 10, a centrifugal blower 11, a third electric valve 12, a branch pipe 13, a second electric valve 14, a backwashing pipe 15, a fourth electric valve 16, a second temperature sensor 18, an auxiliary cooling device 19 and a PLC (programmable logic controller) 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, fig. 1 is a schematic view illustrating the operation of the air-water cooling and air-air cooling switchable system provided by the present invention in an air-water cooling mode; fig. 2 is a schematic view of the operation of the air-water cooling and air-air cooling switchable system provided by the present invention in the air-air cooling mode; fig. 3 is a control flow diagram of the switchable air-cooling and air-cooling system provided by the present invention.
The intake chamber import of heat exchanger 1 is passed through inlet tube 2 and is connected with the water source, has set gradually liquid pressure sensor 3, first electric valve 4, dross removal mechanism 5, first temperature sensor 6 on the inlet tube 2.
The outlet of the water outlet chamber of the heat exchanger 1 is respectively connected with a water outlet pipe 8 and an air inlet pipe 9 through a three-way pipe 7. The air inlet pipe 9 is provided with a fifth electric valve 10, one end of the air inlet pipe 9, which is far away from the three-way pipe 7, is provided with an outdoor centrifugal blower 11, and the outdoor and indoor in the application refer to the inside and outside of a closed room of the air-water cooling system. The water outlet pipe 8 is provided with a third electric valve 12, the water outlet pipe 8 is connected with the water inlet pipe 2 through a branch pipe 13, and the branch pipe 13 is provided with a second electric valve 14.
The two ends of the deslagging device 5 are respectively provided with a water inlet and a water outlet, the water inlet and the water outlet are both connected with the water inlet pipe 2, the bottom wall of the deslagging device 5 is provided with a back flushing port which is connected with a back flushing pipe 15, and the back flushing pipe 15 is provided with a fourth electric valve 16. The deslagging device 5 is a device used for deslagging backflow in an original air water cooling system, and has a specific structure that a water inlet and a water outlet are respectively formed in two ends of the deslagging device, a back flushing port is formed in the bottom wall of the deslagging device and is connected with a back flushing pipe, a fourth electric valve is arranged on the back flushing pipe, and an impurity collecting frame is arranged at the bottom of one end, away from the back flushing port, of the back flushing pipe and is used for collecting impurities when cooling water of a heat exchanger flows back. In the embodiment, the deslagging device in the original air-water cooling system is used as a gas discharging device after heat exchange of air blown into the heat exchanger by the blower in the air-air cooling system, namely, residual water is discharged through a back flushing port of the deslagging device and then the gas is discharged.
The air-water cooling and air-air cooling switchable system further comprises a second temperature sensor 18 arranged outdoors, auxiliary cooling equipment 19 arranged indoors and a local control box, wherein a PLC (programmable logic controller) 20 is installed in the local control box. The PLC 20 is respectively in telecommunication connection with the first electric valve 4, the second electric valve 14, the third electric valve 12, the fourth electric valve 16, the fifth electric valve 10, the liquid pressure sensor 3, the first temperature sensor 6, the centrifugal blower 11, the second temperature sensor 18 and the auxiliary cooling equipment 19. In this embodiment, the auxiliary cooling device 19 is preferably an electric air conditioner.
In the air-water cooling and air-air cooling switchable system, the centrifugal blower can supply air to the outlet of the heat exchanger of the original air-water cooling equipment through the fifth electric door. When the PLC monitors that the pressure is suddenly reduced to 0.05MPa or below through the liquid pressure sensor, the cold source can be judged to be lost, namely the start and stop of the fifth electric door and the blower can be controlled, the air-water cooling normal operation mode is switched to the air-air cooling mode, namely the door 1 and the door 3 are opened, the door 2, the door 4 and the door 5 are closed, and the stop state of the blower is changed into the door 4 and the door 5 are opened, the door 1, the door 2 and the door 3 are closed, and the blower is started at the same time. At this time, the water in the heat exchanger is rapidly discharged from the backwash pipe of the deslagging device under the gravity and the newly blown air pressure. When the water is completely discharged, the heat exchange tubes of the heat exchanger and the water inlet chamber and the water outlet chamber at the two ends all flow outdoor air blown by the blower, and the air cooling and the water cooling are completely changed into air cooling, please refer to fig. 2. When the PLC monitors that the pressure is higher than 0.1MPa through the liquid pressure sensor, the recovery of the cold source is judged, the start and stop of the electric door and the blower can be controlled, and the air-cooling mode is switched to the air-cooling normal operation mode. The specific procedure is to stop the blower, close the doors 4 and 5, and open the doors 1 and 3 at the same time. The water will quickly fill the entire circuit and return to the empty water cooling system, see fig. 1.
When the air-cooling mode is operated, since the outside air and the indoor air are completely isolated, no external air pollutants are introduced into the frequency converter in the mode of operation. However, since the cold source is the outside air, the cooling effect of the system is not good when the outdoor temperature is too high, and the auxiliary cooling device, namely the electric air conditioner, can still be started in a combined manner.
In winter, especially when the outdoor temperature is lower than the temperature of cooling water (river water), the effect of using air-air cooling is better than that of air-water cooling. Since the air-cooled cooling water is taken from a long Yangtze river, long pipelines are needed to be used, electric loads (such as a circulating water pump, a circulating water pump cooling water pump, a rotary filter screen, an open water pump pressurizing and the like) of a plurality of services are needed, and the energy is saved by using the local air compared with the cooling water. Therefore, the air-to-air cooling realizes an energy-saving function by adding a second temperature sensor outdoors. The implementation process comprises the following steps: when the PLC monitors that the outdoor temperature is lower than the temperature of cooling water by 1.5 ℃ or more through the second temperature sensor and the first temperature sensor, the air-water cooling mode is automatically switched to the air-air cooling mode, and when the PLC monitors that the outdoor temperature is equal to or higher than the temperature of the cooling water and the water pressure monitored by the second pressure sensor is higher than 0.1MPa, the air-water cooling mode is automatically switched to the air-water cooling mode.
In addition, when the heat exchanger is disassembled for overhaul, the air cooling mode can also be used for accelerating the water draining of the heat exchanger, so that the heat exchanger can quickly meet the overhaul condition, and the time is saved.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. An air-water cooling and air-air cooling switchable system, comprising: the heat exchanger, the intake of the intake chamber of heat exchanger is passed through the inlet tube and is connected with the water source, liquid pressure sensor, first electric valve, dross removal mechanism, first temperature sensor have set gradually on the inlet tube, the play water outlet of heat exchanger room export respectively with outlet pipe and intake-tube connection through the three-way pipe, be provided with fifth electric valve in the intake pipe, the intake pipe is kept away from one of three-way pipe is served and is provided with the centrifugal blower who is located outdoors, be provided with third electric valve on the outlet pipe, the outlet pipe pass through the branch pipe with advance water piping connection, be provided with the second electric valve on the branch pipe.
2. The switchable air-to-water cooling and air-to-air cooling system as claimed in claim 1, wherein the deslagging device is provided with a water inlet and a water outlet at two ends thereof, the water inlet and the water outlet are both connected to the water inlet pipe, a back flushing port is provided on a bottom wall of the deslagging device and connected to a back flushing pipe, and a fourth electric valve is provided on the back flushing pipe.
3. The air-water cooling and air-air cooling switchable system of claim 2, further comprising a local control box disposed in the same chamber of the heat exchanger, wherein a PLC controller is installed in the local control box, and the PLC controller is respectively in telecommunication connection with the first electric valve, the second electric valve, the third electric valve, the fourth electric valve, the fifth electric valve, the liquid pressure sensor, the first temperature sensor and the centrifugal blower.
4. The air-water cooling and air-air cooling switchable system of claim 3, further comprising a second temperature sensor disposed outdoors, wherein the second temperature sensor is in telecommunication connection with the PLC.
5. The air-water cooling and air-air cooling switchable system of claim 4, further comprising an auxiliary cooling device disposed indoors, wherein the auxiliary cooling device is in telecommunication connection with the PLC.
6. The air-to-water cooling and air-to-air cooling switchable system of claim 5, wherein the auxiliary cooling device is an electric air conditioner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221120545.2U CN217884267U (en) | 2022-05-11 | 2022-05-11 | Air-water cooling and air-air cooling switchable system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221120545.2U CN217884267U (en) | 2022-05-11 | 2022-05-11 | Air-water cooling and air-air cooling switchable system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217884267U true CN217884267U (en) | 2022-11-22 |
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ID=84090271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221120545.2U Expired - Fee Related CN217884267U (en) | 2022-05-11 | 2022-05-11 | Air-water cooling and air-air cooling switchable system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217884267U (en) |
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2022
- 2022-05-11 CN CN202221120545.2U patent/CN217884267U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20221122 |