CN215907967U - LNG pump pond with liquid level monitoring function - Google Patents
LNG pump pond with liquid level monitoring function Download PDFInfo
- Publication number
- CN215907967U CN215907967U CN202022826246.8U CN202022826246U CN215907967U CN 215907967 U CN215907967 U CN 215907967U CN 202022826246 U CN202022826246 U CN 202022826246U CN 215907967 U CN215907967 U CN 215907967U
- Authority
- CN
- China
- Prior art keywords
- liquid level
- pressure
- tank body
- pressure sensor
- lng
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model provides an LNG pump pool with a liquid level monitoring function, which comprises: the closed tank body is internally provided with a fuel pump immersed in the LNG liquid; the pressure sensor P1 is arranged at the inlet of the closed tank body and is used for monitoring the pressure at the inlet of the tank body; the pressure sensor P2 is arranged on the inner side of the top cover of the closed tank body and is used for monitoring partial pressure change of gas in the tank body; and the upper computer is connected with the pressure sensor P1 and the pressure sensor P2 and is used for receiving the measured pressure and realizing the interconversion between the measured liquid level and the measured pressure according to the difference value between the measured pressure values. When the liquid level in the pump pool is reduced to a warning line, the system has sensitive response and accurate measurement; the device is sensitive to pressure change in the pump pool, and gas in the pump pool is effectively prevented from gathering; the alarm device is arranged, so that related personnel can be timely informed to perform subsequent treatment when gas in the pump pool is gathered, and the normal work of the pump in the pump pool is ensured.
Description
Technical Field
The utility model relates to the technical field of ship fuel supply, in particular to an LNG pump pool with a liquid level monitoring function, a liquid level monitoring device and a liquid level monitoring method thereof.
Background
The air Supply System (iGAS) of the dual-Fuel engine mainly converts liquid LNG into Fuel Gas meeting the air intake requirement of the dual-Fuel engine through processes of pressurization, gasification and the like, and can be divided into a low-pressure air Supply System with the air Supply pressure not higher than 16barg and a high-pressure air Supply System with the air Supply pressure up to 300-380barg according to different air Supply pressures, so that the air Supply requirements of a WinGD-DF type low-speed dual-Fuel engine, various types of medium-speed dual-Fuel engines and an MDT-ME-GI/GIE type low-speed dual-Fuel engine can be met.
One of the main devices of the gas supply system is the fuel pump, which due to its particularity needs to be submerged in the LNG liquid, so that a pump sump is required as a storage means for the fuel pump and LNG if the fuel pump is placed outside the tank. At this moment, because the volume of the pump pool is small, and LNG is easy to volatilize into gas as cryogenic liquid, the liquid level in the pump pool is extremely easy to be influenced due to the two effects, and therefore a device is needed to monitor the liquid level in the pump pool urgently.
At present, no explanation or report of the similar technology of the utility model is found, and similar data at home and abroad are not collected.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides the LNG pump pool with the liquid level monitoring function.
The utility model is realized by the following technical scheme.
An LNG pump sump having a level monitoring function, comprising:
the device comprises a closed tank body, a fuel pump and a gas tank, wherein the closed tank body is internally provided with the fuel pump which is immersed in the LNG liquid;
the pressure sensor P1 is arranged at the inlet of the closed tank body and used for monitoring the pressure at the inlet of the tank body;
the pressure sensor P2 is arranged on the inner side of the top cover of the closed tank body and used for monitoring the pressure change of the gas part in the tank body;
the upper computer is respectively connected with the pressure sensor P1 and the pressure sensor P2 and used for receiving the pressure monitored by the pressure sensor P1 and the pressure sensor P2 and realizing the interconversion between the measured pressure and the liquid level height according to the difference between the measured pressure values.
Preferably, the pressure of the LNG gas and the LNG liquid in the closed tank is P, the liquid level height of the current LNG liquid is H, the density is ρ, and the gravity acceleration is g, then:
P1＝P+Hρg
P2＝P
ΔP＝P1-P2＝Hρg；
when the density ρ is known, the obtained pressure difference Δ P is proportional to the liquid level height H, i.e. the liquid level height H is obtained from the measured pressure.
Preferably, the LNG pump pond with liquid level monitor function still includes alarm device, liquid level height threshold value is predetermine to the host computer, when present liquid level height is less than or equal to liquid level height threshold value, through alarm device implementation warning.
Preferably, the alarm device is connected with the upper computer, or the alarm device is embedded in the upper computer.
Preferably, the alarm device comprises any one or more of the following alarm components:
-a buzzer;
-a warning light.
Preferably, the upper computer adopts a computer or a mobile terminal.
Due to the adoption of the technical scheme, compared with the prior art, the utility model has the following beneficial effects:
1. according to the LNG pump pool with the liquid level monitoring function, when the liquid level in the pump pool is lowered to the warning line, the response is sensitive, and the measurement is accurate.
2. The LNG pump pool with the liquid level monitoring function is sensitive to pressure change in the pump pool, and gas in the pump pool is effectively prevented from gathering.
3. The LNG pump pool with the liquid level monitoring function is provided with the alarm device, so that related personnel can be timely informed of subsequent treatment when gas in the pump pool is gathered, and normal work of a pump in the pump pool is guaranteed.
Drawings
Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic structural diagram of an LNG pump pool with a liquid level monitoring function according to a preferred embodiment of the present invention.
In the figure, 1 is a pressure sensor, 2 is a closed cell body, 3 is a fuel pump, P is the pressure of liquid and gas in the cell body, P1 is the pressure at the inlet of the cell body, and P2 is the partial pressure of the gas in the cell body.
Detailed Description
The following examples illustrate the utility model in detail: the embodiment is implemented on the premise of the technical scheme of the utility model, and a detailed implementation mode and a specific operation process are given. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
The embodiment of the utility model provides an LNG pump pool with a liquid level monitoring function, which realizes liquid level monitoring by measuring pressure change.
As shown in fig. 1, an LNG pump pool with a liquid level monitoring function according to an embodiment of the present invention includes:
the closed tank body is internally provided with a fuel pump, and the fuel pump is immersed in the LNG liquid;
the pressure sensor P1 and the pressure sensor P1 are arranged at the inlet of the closed tank body and are used for monitoring the pressure at the inlet of the tank body;
the pressure sensor P2 and the pressure sensor P2 are arranged on the inner side of the top cover of the closed tank body and are used for monitoring partial pressure change of gas in the tank body;
and the upper computer is respectively connected with the pressure sensor P1 and the pressure sensor P2 and is used for receiving the pressures monitored by the pressure sensor P1 and the pressure sensor P2 and realizing the interconversion between the measured pressure and the liquid level height according to the difference between the measured pressure values.
As a preferred embodiment, if the pressure of the LNG gas and the LNG liquid in the closed tank is P, the current liquid level height of the LNG liquid is H, the density is ρ, and the gravity acceleration is g, then:
P1＝P+Hρg
P2＝P
ΔP＝P1-P2＝Hρg；
when the density ρ is known, the obtained pressure difference Δ P is proportional to the liquid level height H, i.e. the liquid level height H is obtained from the measured pressure.
As a preferred embodiment, the LNG pump pond with liquid level monitor function still includes alarm device, and the host computer presets the liquid level height threshold value, when present liquid level height is less than or equal to liquid level height threshold value, implements the warning through alarm device.
As a preferred embodiment, the alarm device is connected with the upper computer, or the alarm device is embedded in the upper computer.
As a preferred embodiment, the host computer adopts a computer or a mobile terminal.
As a preferred embodiment, the alarm device comprises any one or any plurality of alarm components:
-a buzzer;
-a warning light.
In some embodiments of the utility model:
when liquid flows in the pump tank, the pressure sensor P1 measures the pressure at the inlet of the tank body, the pressure sensor P2 measures the pressure of the upper gas part in the tank body, and two pressures P1 and P2 are obtained.
Setting the height of the current liquid level as H, the density as rho, the gravity acceleration as g, and the pressure of gas and liquid in the tank body as P, then:
P1＝P+Hρg
P2＝P
this gives: Δ P-P1-P2-H ρ g
When the density rho of the measured medium is known, the measured pressure difference (namely the obtained delta P) is in direct proportion to the liquid level height H, and the problem of measuring the liquid level and the problem of measuring the pressure can be mutually converted.
The host computer can set up the comparator, and liquid level height threshold value scope is predetermine to the comparator, through comparing actual data value and threshold value scope, output control signal 1 or 0. When the current liquid level height is less than or equal to the liquid level height threshold value, the comparator outputs 1, the upper computer controls the alarm device to alarm, and the operator can conveniently perform subsequent treatment in time; otherwise, the comparator outputs 0, and the pump pool works normally.
According to the LNG pump pool with the liquid level monitoring function, when the liquid level in the pump pool is lowered to the warning line, the response is sensitive, and the measurement is accurate.
The LNG pump pool with the liquid level monitoring function provided by the embodiment of the utility model is sensitive to pressure change in the pump pool, and gas in the pump pool is effectively prevented from being accumulated.
The LNG pump pool with the liquid level monitoring function provided by the embodiment of the utility model is provided with the alarm device, so that related personnel can be timely informed to carry out subsequent treatment when gas in the pump pool is gathered, and the normal work of the pump in the pump pool is ensured.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the utility model.
Claims (5)
1. An LNG pump pond with liquid level monitoring function, characterized by comprising:
the device comprises a closed tank body, a fuel pump and a gas tank, wherein the closed tank body is internally provided with the fuel pump which is immersed in the LNG liquid;
the pressure sensor P1 is arranged at the inlet of the closed tank body and used for monitoring the pressure at the inlet of the tank body;
the pressure sensor P2 is arranged on the inner side of the top cover of the closed tank body and used for monitoring the pressure change of the gas part in the tank body;
the upper computer is respectively connected with the pressure sensor P1 and the pressure sensor P2 and used for receiving the pressure monitored by the pressure sensor P1 and the pressure sensor P2 and realizing the interconversion between the measured pressure and the liquid level height according to the difference between the measured pressure values.
2. The LNG pump pond with the liquid level monitoring function according to claim 1, further comprising an alarm device, wherein the upper computer presets a liquid level height threshold value, and when the current liquid level height is less than or equal to the liquid level height threshold value, an alarm is implemented through the alarm device.
3. The LNG pump pond with the liquid level monitoring function of claim 2, wherein the alarm device is connected with the upper computer or embedded in the upper computer.
4. The LNG pump pool with liquid level monitoring function of claim 3, wherein the alarm device comprises any one or more of the following alarm components:
-a buzzer;
-a warning light.
5. The LNG pump pond with the liquid level monitoring function according to any one of claims 1 to 4, wherein the upper computer is a computer or a mobile terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022826246.8U CN215907967U (en) | 2020-11-30 | 2020-11-30 | LNG pump pond with liquid level monitoring function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022826246.8U CN215907967U (en) | 2020-11-30 | 2020-11-30 | LNG pump pond with liquid level monitoring function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215907967U true CN215907967U (en) | 2022-02-25 |
Family
ID=80285047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022826246.8U Active CN215907967U (en) | 2020-11-30 | 2020-11-30 | LNG pump pond with liquid level monitoring function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215907967U (en) |
-
2020
- 2020-11-30 CN CN202022826246.8U patent/CN215907967U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7453271B2 (en) | Apparatus and method for sensing water within a fuel-water separator assembly | |
| CN102016266B (en) | Method for determining air filter condition | |
| CN101929490A (en) | Leak detection system in the wind turbine | |
| US6067498A (en) | Method and apparatus for engine abnormality detection | |
| CN215907967U (en) | LNG pump pond with liquid level monitoring function | |
| CN112879389A (en) | Abnormal leakage detection system of hydraulic system | |
| CN112502861A (en) | LNG pump pond with liquid level monitoring function | |
| CN207945016U (en) | A kind of electronic controlled diesel low pressure oil way diagnostic system and electronic controlled diesel low pressure oil way | |
| CN209929413U (en) | Circulating system of hydrogen leak detection alarm for fuel cell | |
| CN207366143U (en) | A kind of bubble detection and data collecting system | |
| CN107202615A (en) | Fuel consumption computational methods | |
| CN205503214U (en) | Gasoline engine oil pressure and engine oil drain pan liquid level intellectual detection system early warning device | |
| CN206111523U (en) | Pair hydraulic pressure pump test bed | |
| CN212838282U (en) | Device for stabilizing pressure of pump head | |
| CN209725856U (en) | A kind of pipeline pressure monitoring device | |
| CN209146009U (en) | A kind of Special fuel tank | |
| CN209247754U (en) | A kind of environment-friendly type water quality detecting device based on heliotechnics | |
| CN207437244U (en) | A kind of engine fuel oil system for monitoring oil pressure | |
| CN111504579A (en) | Diaphragm air pressure tank and safety detection method thereof | |
| CN217233687U (en) | Common rail pipe assembly performance testing device | |
| CN217841824U (en) | Diesel engine cooling water treatment agent adds device and vehicle | |
| CN207650030U (en) | A kind of test device for testing gas-jar pressure | |
| CN216783764U (en) | Buffer water tank of self-elevating ocean platform | |
| CN210005890U (en) | remote water level monitoring controller | |
| CN216791277U (en) | Redundant formula flow monitoring equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |