CN214666154U - Cooling water tower system of hydrogen production plant - Google Patents
Cooling water tower system of hydrogen production plant Download PDFInfo
- Publication number
- CN214666154U CN214666154U CN202120495756.3U CN202120495756U CN214666154U CN 214666154 U CN214666154 U CN 214666154U CN 202120495756 U CN202120495756 U CN 202120495756U CN 214666154 U CN214666154 U CN 214666154U
- Authority
- CN
- China
- Prior art keywords
- water
- cooling
- hydrogen production
- hydrogen
- tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Separation By Low-Temperature Treatments (AREA)
Abstract
The utility model discloses a cooling water tower system of a hydrogen production plant, which comprises a cooling system, a hydrogen production device and a management system, wherein the cooling system and the hydrogen production device are electrically connected with the management system, and the cooling system is connected with the hydrogen production device through a pipeline; the cooling system comprises a cooling water tower, a water collecting tank and a pipeline, the water collecting tank is connected with the hydrogen production equipment and the compressor through the pipeline, the hydrogen production equipment and the compressor are connected with the cooling water tower through the pipeline, the cooling water tower is connected with the water collecting tank through the pipeline, the intelligent management system comprises a display device and a control system, the display device is used for displaying the working condition of the cooling system, and the control system is used for controlling the operation of the cooling system; this application is through setting up catch basin and pipeline, buries catch basin and pipeline under the frozen soil layer, utilizes soil winter heat preservation characteristic to reach the frostproofing effect of cooling tower, simultaneously through setting up management system, remote observation cooling system's behavior, control cooling system's operation.
Description
Technical Field
The utility model relates to a hydrogen manufacturing equipment technical field especially relates to a hydrogen manufacturing plant cooling tower system.
Background
The hydrogen energy is listed as clean low-carbon energy in China, the industrial development of the hydrogen energy is promoted in all directions, and numerous hydrogen energy enterprises are in the process of operation. The hydrogen production plant is a year-round refrigeration type plant, and the hydrogen production equipment and the compressor of the plant need a cooling system, wherein a cooling water tower plays an extremely important role in cooling. However, in northern cold and severe cold areas, the temperature is usually below 0 ℃ in winter, the freezing phenomenon can occur when the cooling water tower is used for refrigeration, the normal operation of a refrigeration system is influenced, the temperature of hydrogen production equipment or a compressor cannot be reduced to a normal range, and serious accidents such as hydrogen explosion are easily caused, so that the development of the cooling water tower system of the hydrogen production plant for preventing freezing in the cold areas can not only improve the utilization efficiency of the cooling system, but also play a key role in preventing and treating various fires and explosion accidents caused by overhigh temperature of the equipment in the hydrogen production plant.
The basic principle of the common cooling water tower at present is as follows: and the cooling water tower is butted with target equipment, cold water is conveyed to cool the target equipment, hot water flowing through the equipment returns to the cooling water tower, is sprayed to the surface of the heat dissipation material and contacts with the moving air to be cooled, and is pumped to the target equipment again through the water pump to be recycled after cooling. In winter, the water conveying pipeline and the water pump of the cooling water tower system are exposed on the ground surface, or part of the pipeline is buried in a frozen soil layer, so that the overground pipeline, the air inlet and the periphery of the cooling water tower are easily frozen, the cooling system stops working, and once the cooling system stops working, the hydrogen production field equipment does not have a standby cooling water source, so that the probability of accidents caused by high temperature of the equipment is very high. In summer, the cooling effect of the ground cooling equipment often does not reach the standard due to overhigh environmental temperature or other reasons, so that the working of the whole cooling system including the cooling water tower is influenced due to overhigh return water temperature, the equipment is seriously damaged even, the production is stopped, and the economic loss of the equipment is often immeasurable.
In summary, a cooling water tower system of a hydrogen production plant in a cold area, which can fundamentally prevent freezing of a water tower in winter and is easy to monitor and directly control, is lacking in China.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the application provides a hydrogen plant cooling water tower system, constitute by cooling system and management system, pond and pipeline through the innovation cooling system, bury pond and pipeline under the frozen soil, and be equipped with the management system who is connected with cooling system, through display device and control system, can also long-range observation cooling system's behavior when frostproofing, control cooling system's operation, the cooling system utilization efficiency in winter has been improved, make the hydrogen plant more intelligent, more play the key role in preventing and treating all kinds of conflagrations, the explosion accident that take place because of equipment fails to fall normal temperature in the hydrogen plant simultaneously.
To achieve the above object, the present application provides a cooling water tower system for a hydrogen plant, comprising: the system comprises a cooling system, a hydrogen production device and a management system, wherein the cooling system and the hydrogen production device are electrically connected with the management system, and the cooling system is connected with the hydrogen production device through a pipeline; the cooling system comprises a cooling water tower, a water collecting tank and a pipeline, the hydrogen production device comprises hydrogen production equipment and a compressor, and the management system comprises a display device and a control system; the water collecting tank is connected with the hydrogen production equipment and the compressor through pipelines, the hydrogen production equipment and the compressor are connected with the cooling water tower through pipelines, and the cooling water tower is connected with the water collecting tank through a pipeline; the display device and the control system are electrically connected to the cooling system, and the hydrogen production device is electrically connected to the control system.
In some embodiments of the present application, a water level monitor and a water discharger are disposed at an upper portion of the water collecting tank, and the water level monitor and the water discharger are connected to an external water source through a water pipe.
In some embodiments of the present application, a water temperature detector and a speed-regulating water pump are disposed on the pipes connecting the water collecting tank, the hydrogen production equipment and the compressor.
In some embodiments of the present application, the water level monitor and the water discharger, the water temperature detector and the speed-adjustable water pump, the cooling tower, the hydrogen production equipment, and the compressor are all electrically connected to the control system.
In some embodiments of the present application, the water level monitor and the water discharger, and the water temperature monitor and the speed-regulating water pump are electrically connected to the display device.
In some embodiments of the present application, the display device is provided with a first indicator light and a second indicator light, which are arranged side by side.
In some embodiments of the present application, the display device is configured to: under the normal condition of the cooling system, the first indicator light is on, otherwise, the second indicator light is on;
the cooling system is normally defined as: presetting X as a first water level height value and Y as a first temperature value, wherein the water level detector detects that the current water level is not lower than the first water level height value and the water temperature detector detects that the value of the current water temperature is not higher than the first temperature value.
In some embodiments of the present application, the water collecting tank is a cylindrical structure, the bottom periphery of the water collecting tank is a flat structure, and the inner periphery of the water collecting tank is a conical structure downwards to the center.
In some embodiments of the present application, a filter screen is disposed at a top opening of the sump.
In some embodiments of the present application, the cooling system and the hydrogen production apparatus are provided in plurality, the cooling system and the hydrogen production apparatus are respectively provided in correspondence, and the cooling system and the hydrogen production apparatus are all connected to the management system.
Compared with the prior art, the cooling water tower system of the hydrogen production plant has the advantages that the underground water collecting tank is created, the problem that water cannot be supplied to equipment due to the fact that the equipment is frozen in winter is prevented, and the multiple functions of monitoring water level, automatically replenishing water, filtering and collecting deposited silt are achieved; the management system is convenient for managers to manage the cooling system, and the operation conditions of the cooling towers, the water level condition of the water collecting tank and the pipeline transportation condition can be observed only by the display device in the operation chamber, so that the operation conditions of the cooling system and the hydrogen production device are remotely controlled, and the normal operation of the whole hydrogen production system is ensured, thereby effectively reducing the occurrence of a series of accidents caused by overhigh temperature of equipment.
Drawings
FIG. 1 is a schematic diagram of a cooling system of a hydrogen plant according to an embodiment of the present invention;
FIG. 2 is a diagram of a management system of a hydrogen plant according to an embodiment of the present invention.
In the figure: 1. the system comprises a water collecting tank, 2, a cooling water tower, 3, hydrogen production equipment, 4, a compressor, 5, a display device, 6, a control system, 7, a water temperature monitor, a speed-regulating water pump, 8, a water level monitor, a water discharger, 9, a filter screen, 511, a first indicator lamp, 512 and a second indicator lamp.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1 and fig. 2, a cooling water tower system of a hydrogen production plant according to a preferred embodiment of the present invention comprises a cooling system, a hydrogen production apparatus and a management system, wherein the cooling system and the hydrogen production apparatus are connected with the management system through lines, and the cooling system is connected with the hydrogen production apparatus through a pipeline;
the cooling system comprises a cooling water tower 2, a water collecting tank 1 and pipelines, the hydrogen production device comprises a hydrogen production device 3 and a compressor 4, and the management system comprises a display device 5 and a control system 6; the water collecting tank 1 is connected with the hydrogen production equipment 3 and the compressor 4 through pipelines, the hydrogen production equipment 3 and the compressor 4 are connected with the cooling water tower 2 through pipelines, and the cooling water tower 2 is connected with the water collecting tank 1 through a pipeline; the display device 5 and the control system 6 are electrically connected to the cooling system, and the hydrogen production device is electrically connected to the control system 6.
Wherein, collecting tank 1 is connected with hydrogen manufacturing equipment 3 and compressor 4, and the water of collecting tank 1 passes through the pipeline and gets into hydrogen manufacturing equipment 3 and compressor 4 and be used for cooling hydrogen manufacturing equipment 3 and compressor 4, and water becomes hot water behind hydrogen manufacturing equipment 3 and compressor 4 and gets into cooling tower 2 and cool off, and the water after the cooling gets back to in collecting tank 1 through the pipeline again, circulates in proper order.
It should be noted that the water collecting tank 1 needs to be built below the depth of the frozen soil layer, the general depth is more than one meter under the soil, the more north area, such as the area with great popularity, should be more than 1.2 meters, the other areas adjust the position depth of the water tank according to the depth of the frozen soil layer of the local area, prevent the devices from being unable to supply water because of the freezing of the devices in winter; in order to avoid frost cracking of the pipeline, a groove for installing the pipeline connecting the water collecting tank 1 with the hydrogen production equipment 3 and the compressor 4 is further arranged below the frost layer with the depth of more than 1 m, the width and the height of the groove are set to be one meter, and the length of the groove is determined according to the length of the pipeline.
The management system is arranged in an underground operation chamber connected with the groove, the display device 5 and the control system 6 are electrically connected with the cooling system, the hydrogen production device is electrically connected with the control system 6 and can monitor and simultaneously display the working conditions of a plurality of cooling systems, and the control system 6 controls the switches of the cooling system and the hydrogen production device according to the working conditions displayed by the display device 5. The management system can be connected to a mobile phone end to send the working conditions and the system operation steps of each device to a mobile phone of a manager through the communication system, and the manager can operate through the mobile phone operation system, so that the management of the system by the manager is facilitated.
In some embodiments of this application, catch basin 1 volume should be greater than 10 times of mill's hydrogen manufacturing equipment 3 and compressor 4 water volume, and catch basin 1 wholly is the cylinder structure, the bottom periphery of catch basin 1 is flat structure, encloses the circular cone structure that is 30 degrees slopes downwards to central department, and its design aim at if tiny silt drops the deposit, can converge into the circular cone bottom in the same direction as the slope, and the maintainer can stand and absorb silt in the flat bottom of periphery.
In some embodiments of the present application, a filter screen 9 is disposed at the top opening of the water collecting tank 1 to filter large silt and foreign matters in the water pipe, so as to avoid blocking of the pipe.
In some embodiments of the present application, a water level monitor and a water discharger 8 are disposed on the upper portion of the water collecting tank 1, the water level monitor and the water discharger 8 are connected to an external water source through a water pipe and are connected to the control system 6 through a line, when the control system 6 monitors that the water level of the water surface evaporation of the water collecting tank 1 is too low, a valve of the water discharger is automatically opened, and water is pumped from the external water source through a submersible pump to be replenished into the water collecting tank 1.
In some embodiments of the present application, a pipeline connecting the water collecting tank 1 with the hydrogen production equipment 3 and the compressor 4 is arranged at one end port of the water collecting tank 1 and is higher than the bottom of the water tank by 3-5cm, a water temperature detector and a speed-regulating water pump 7 are connected to the pipeline, and the water temperature detector, the speed-regulating water pump 7 and other equipment and a water pipe switch are arranged in the operation room and are connected with the management system; the speed-regulating water pump is used for pumping cooling water from the water collecting tank 1 and respectively enters the hydrogen production equipment 3 and the compressor 4 through pipelines, and the water temperature detector is used for monitoring the water temperature of the pipelines connected with the hydrogen production equipment 3 and the compressor 4 through the water collecting tank 1; when the temperature of the return water is monitored by the water temperature monitor to be overhigh, the speed-regulating water pump automatically accelerates the water circulation speed, improves the water passing amount of the equipment to accelerate the cooling speed of the equipment, and automatically restores the normal water supply speed after the temperature of the return water is monitored to be reduced to a normal range.
In some embodiments of the present application, the display device 5 is provided with a first indicator lamp 511 and a second indicator lamp 512 for displaying and monitoring the water level condition of the water tank of the cooling water tower system, the water pressure of the water pipe, the water temperature condition and the working condition of the water pump;
the display device 5 is arranged to: under the normal condition of the cooling system, the first indicator lamp 511 is turned on, otherwise, the second indicator lamp 512 is turned on;
the cooling system is normally defined as: presetting X as a first water level height value and presetting Y as a first temperature value, the water level monitor detects that the current water level is not less than the first water level height value and the numerical value that the water temperature detector detects the current water temperature is not higher than the first temperature value, and water pressure is the numerical value in the set range and the water pump normally operates. When each system operates normally, the first indicator lamp 511 is on, if the water level of the water tank is lower than a monitoring value, the water temperature is higher than the monitoring value, the water pressure is abnormal, the water pipe is frozen and blocked, or the water pump stops working due to freezing or faults, the display screen displays that the first indicator lamp 511 changes the cooling water tower 2 into the second indicator lamp 512, and meanwhile, related information is sent to the mobile phone end of a manager and an operator, so that the manager is prompted to water the water tank or overhaul the cooling system.
In some embodiments of the application, the control system 6 is connected with the water level monitor and the switch of the water discharger 8, the switch of the speed-regulating water pump, the switch of the equipment water inlet and outlet switch and the switch of the cooling tower 2, when the system monitors that the water level of the water tank is lower than a monitoring value, the control system 6 automatically operates and controls the water inlet of the water tank, and simultaneously, the water delivery speed of each water pump, the equipment water inlet and outlet and the work of the cooling tower can be controlled, the working condition and the system operation steps of each equipment are sent to the mobile phone end of a manager through the communication system, and the manager can also operate through the mobile phone operation system.
In some embodiments of the application, cooling system and hydrogen manufacturing installation are provided with a plurality ofly, and are a plurality of cooling system and a plurality of hydrogen manufacturing installation correspond the setting respectively, and are a plurality of cooling system and a plurality of hydrogen manufacturing installation all connect in same management system, and the operation of whole hydrogen manufacturing plant of steerable management just makes things convenient for the intelligent management of hydrogen manufacturing plant, makes the hydrogen manufacturing plant more intelligent.
According to the first conception of the application, through designing an underground water collecting tank, prevent that winter is because of each equipment freezes can't be for equipment water supply, still have monitoring water level and automatic water supply simultaneously, filter and collect deposit silt multiple function, the freezing problem in winter of traditional ground water collecting tank has been solved, it blocks up the pipeline and deposits the difficult clearance problem in the pond inside to have lightened the sediment silt, even the equipment freezes can't supply the cooling water on the ground in extremely cold area, thereby this product still can draw water in the pond very first time and effectively reduce because of the emergence of equipment high temperature and lead to a series of accidents.
According to the second design of this application, set up equipment such as water pipeline and speed governing water pump and temperature monitor through an innovation underground slot and basement, in winter, prevent that the frozen unable water conveyance of water pipe or speed governing water pump from frost crack, connect the management system switch simultaneously, can open water pump work automatically. The problem of traditional pipeline on the ground, water pump freezing in winter is solved, and the water circulating system in the field of is overhauld, control to the managers of being convenient for again. In summer, the problem of overhigh temperature of return water caused by overhigh ground temperature is solved by automatically adjusting the water circulation of the water pump acceleration system.
According to the third concept of the application, a display device and a control system are innovated, management of a cooling system by hydrogen plant managers is facilitated, the running condition of each cooling tower, the water pool supply condition and the pipeline transportation condition can be observed through a screen only in an operation room, and the intuition is strong. The switch of each water pump and each water tower can be started through computer operation, and the operation is convenient and fast.
According to the fourth concept of the application, the design of the underground water pool and the water pipe utilizes the physical warm-keeping characteristic of the soil of the non-frozen soil layer in winter and the cooling characteristic in summer, so that the underground water pool and the water pipe are easy once and for all, the additional consumption of heat energy and electric energy is not needed, the accident rate caused by the use of a hot warm-keeping method is reduced, and the safety of the hydrogen production field is improved.
According to the fifth concept of the application, the above-ground cooling water tower body part can be automatically selected in type and specification according to the requirements of factory equipment, the scale of the underground water collecting tank can be adjusted according to the site, the selectivity and the setting flexibility of a factory cooling water tower system are improved, and meanwhile, the system can be installed in any factory needing a cooling water tower except a hydrogen production site.
To sum up, the embodiment of the utility model provides a hydrogen manufacturing plant cooling tower system has monitoring water level and automatic water supply through the setting, filter and collect the catch basin of deposit silt multiple function, and the management system who sets up guarantees the safe operation of hydrogen manufacturing plant, through display device monitoring cooling system's temperature, water pressure, the water level height, the operational aspect of the water pump and cooling tower, control system is according to the cooling system operation conditions that display device shows, thereby control cooling system and hydrogen manufacturing plant's operation conditions.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (10)
1. A hydrogen plant cooling water tower system, comprising:
the system comprises a cooling system, a hydrogen production device and a management system, wherein the cooling system and the hydrogen production device are electrically connected with the management system, and the cooling system is connected with the hydrogen production device through a pipeline;
the cooling system comprises a cooling water tower, a water collecting tank and a pipeline, the hydrogen production device comprises hydrogen production equipment and a compressor, and the management system comprises a display device and a control system;
the water collecting tank is connected with the hydrogen production equipment and the compressor through pipelines, the hydrogen production equipment and the compressor are connected with the cooling water tower through pipelines, and the cooling water tower is connected with the water collecting tank through a pipeline;
the display device and the control system are electrically connected to the cooling system, and the hydrogen production device is electrically connected to the control system.
2. The system of claim 1, wherein a water level monitor and a water discharger are disposed at an upper portion of the water collecting tank, and the water level monitor and the water discharger are connected to an external water source through a water pipe.
3. The hydrogen plant cooling water tower system according to claim 2, wherein a water temperature detector and a speed regulating water pump are arranged on the pipelines connecting the water collecting tank, the hydrogen production equipment and the compressor.
4. The cooling water tower system of a hydrogen plant according to claim 3, wherein the water level monitor and the water discharger, the water temperature detector and the speed regulating water pump, the cooling water tower, the hydrogen production equipment and the compressor are all electrically connected to the control system.
5. The hydrogen plant cooling water tower system according to claim 4, wherein the water level monitor and the water discharger, the water temperature detector and the speed regulating water pump are electrically connected to the display device.
6. The hydrogen plant cooling water tower system according to claim 5, wherein the display device is provided with a first indicator light and a second indicator light, and the first indicator light and the second indicator light are arranged in parallel.
7. The hydrogen plant cooling water tower system of claim 6, wherein the display device is configured to: under the normal condition of the cooling system, the first indicator light is on, otherwise, the second indicator light is on;
the cooling system is normally defined as: presetting X as a first water level height value and Y as a first temperature value, wherein the water level monitor detects that the current water level is not lower than the first water level height value and the water temperature detector detects that the value of the current water temperature is not higher than the first temperature value.
8. The hydrogen plant cooling water tower system according to claim 1, wherein the water collection tank is of a cylindrical structure, the bottom periphery of the water collection tank is of a flat structure, and the bottom periphery of the water collection tank is of a downward conical structure from the inner periphery to the center.
9. The hydrogen plant cooling water tower system according to claim 8, wherein a screen is disposed at the top opening of the water collection tank.
10. The hydrogen plant cooling water tower system according to any one of claims 1 to 9, wherein a plurality of cooling systems and hydrogen production devices are provided, the plurality of cooling systems and the plurality of hydrogen production devices are respectively provided correspondingly, and the plurality of cooling systems and the plurality of hydrogen production devices are all connected to the management system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120495756.3U CN214666154U (en) | 2021-03-09 | 2021-03-09 | Cooling water tower system of hydrogen production plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120495756.3U CN214666154U (en) | 2021-03-09 | 2021-03-09 | Cooling water tower system of hydrogen production plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214666154U true CN214666154U (en) | 2021-11-09 |
Family
ID=78451975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120495756.3U Active CN214666154U (en) | 2021-03-09 | 2021-03-09 | Cooling water tower system of hydrogen production plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214666154U (en) |
-
2021
- 2021-03-09 CN CN202120495756.3U patent/CN214666154U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101563574A (en) | Modular ice storage for uninterruptible chilled water | |
| US20070044978A1 (en) | Multipurpose fluid distribution system | |
| CN107587558B (en) | Intelligent control system and method for fire-fighting, anti-freezing and water-supplying of highway tunnel in cold region | |
| CN201704729U (en) | Pipe network pressure-superposition frequency conversion water supply system | |
| CN111338253A (en) | Intelligent integrated management system and control method of lifting type underground ring main unit | |
| CN210511061U (en) | Data center diesel oil supply system | |
| US7243909B2 (en) | Collector sump cooling tower | |
| CN205708212U (en) | Oil storage tank cooling system | |
| CN214666154U (en) | Cooling water tower system of hydrogen production plant | |
| CN214570703U (en) | Automatic oil supplementing system for daily oil tank of diesel generating set | |
| CN206111237U (en) | Colliery sump automatic drainage system | |
| CN206110247U (en) | Fire control cistern automatic water supply monitoring device | |
| CN108445827A (en) | A kind of civil air defense constructions and installations security management and control and real-time monitoring system | |
| CN203023070U (en) | XBZ vehicle-mounted fire pump sledge | |
| CN204212245U (en) | A kind of low-pressure drainage system collected for municipal wastewater | |
| CN206021517U (en) | A kind of supply equipment trouble call warning system | |
| CN210533150U (en) | Cooling tower ice melting device system | |
| CN215566528U (en) | Energy-conserving water pump remote control system | |
| CN213958718U (en) | Underground foundation pit of lifting transformer with drainage function | |
| CN213540578U (en) | Fuel supply linkage control system of data center diesel generating set | |
| CN113969890B (en) | Method for monitoring operation of drainage pump and fault diagnosis thereof based on liquid level meter | |
| CN210049225U (en) | Foundation pit bottom freezing and reinforcing structure | |
| CN103032337A (en) | XBZ vehicle mounted fire pump skid | |
| CN214501648U (en) | Chassis deicing device and air conditioner | |
| CN101761110B (en) | Automatic water adding method and device of dam water tube-type settlement instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |