CN106931305B - Gas filling substation medium oil compensation system and gas filling substation medium oil compensation method - Google Patents

Gas filling substation medium oil compensation system and gas filling substation medium oil compensation method Download PDF

Info

Publication number
CN106931305B
CN106931305B CN201511026966.3A CN201511026966A CN106931305B CN 106931305 B CN106931305 B CN 106931305B CN 201511026966 A CN201511026966 A CN 201511026966A CN 106931305 B CN106931305 B CN 106931305B
Authority
CN
China
Prior art keywords
oil
value
medium oil
pressure
filling
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
Application number
CN201511026966.3A
Other languages
Chinese (zh)
Other versions
CN106931305A (en
Inventor
张鹏娜
王德印
朱敬东
张立改
陈福洋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ENRIC(LANGFANG)ENERGY EQUIPMENT INTEGRATION CO LTD
China International Marine Containers Group Co Ltd
CIMC Enric Holding Shenzhen Co Ltd
Original Assignee
ENRIC(LANGFANG)ENERGY EQUIPMENT INTEGRATION CO LTD
China International Marine Containers Group Co Ltd
CIMC Enric Holding Shenzhen Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ENRIC(LANGFANG)ENERGY EQUIPMENT INTEGRATION CO LTD, China International Marine Containers Group Co Ltd, CIMC Enric Holding Shenzhen Co Ltd filed Critical ENRIC(LANGFANG)ENERGY EQUIPMENT INTEGRATION CO LTD
Priority to CN201511026966.3A priority Critical patent/CN106931305B/en
Publication of CN106931305A publication Critical patent/CN106931305A/en
Application granted granted Critical
Publication of CN106931305B publication Critical patent/CN106931305B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F17C2250/032—Control means using computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/03—Control means
    • F17C2250/036—Control means using alarms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0689—Methods for controlling or regulating
    • F17C2250/0694—Methods for controlling or regulating with calculations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/03—Dealing with losses

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)

Abstract

The invention discloses a gas filling substation medium oil compensation system and a gas filling substation medium oil compensation method, wherein the gas filling substation medium oil compensation system is arranged on a gas filling substation, the gas filling substation comprises a gas cylinder and an oil tank, the oil tank can fill medium oil into the gas cylinder through a gas filling pipeline through a power mechanism, the gas cylinder can return the medium oil to the oil tank through an oil return pipeline through the power mechanism, and the gas filling substation medium oil compensation system comprises a pressure detection module and a calculation control module; the pressure detection module can respectively measure a first pressure in the gas cylinder after the medium oil with the volume of a designed value is filled into the gas cylinder and a second pressure in the gas cylinder after the first pressure and the medium oil with the volume of the designed value flow back to the oil tank; the calculation control module is connected with the power mechanism, the calculation control mechanism can calculate the volume of a compensation value of the medium oil according to the first pressure and the second pressure, and the sum of the volume of the compensation value and the volume of a design value is used as the volume of an actual value of the filled medium oil.

Description

Gas filling substation medium oil compensation system and gas filling substation medium oil compensation method
Technical Field
The invention relates to the technical field of compressed gas filling equipment, in particular to a filling substation medium oil compensation system and a filling substation medium oil compensation method.
Background
The related control points of an oil tank liquid level meter of the existing compressed gas filling equipment, such as a CNG hydraulic flat push substation, are all in a fixed dry node form, once the oil quantity in an oil tank changes, the system cannot realize automatic adjustment, and the gas unloading rate of a trailer of the substation is reduced. Moreover, the longer the normal operation time of the conventional gas filling substation is, the greater the loss of the medium oil is, the more the residual gas in the gas cylinder of the substation trailer is increased, the further the residual pressure of the gas cylinder of the substation trailer is increased, the gas discharging rate is reduced, and the gas loss is increased.
Disclosure of Invention
The invention has a main purpose of overcoming at least one defect of the prior art and providing a filling substation medium oil compensation system capable of performing medium oil filling compensation on a filling substation.
Another main object of the present invention is to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a method for filling and compensating a filling station with a medium oil.
In order to achieve the purpose, the invention adopts the following technical scheme:
according to one aspect of the invention, the gas filling substation medium oil compensation system is arranged on a gas filling substation, the gas filling substation comprises a gas cylinder and an oil tank, the oil tank can fill medium oil into the gas cylinder through a gas filling pipeline through a power mechanism, the gas cylinder can return the medium oil to the oil tank through an oil return pipeline through the power mechanism, and the gas filling substation medium oil compensation system comprises a pressure detection module and a calculation control module; the pressure detection module can respectively measure a first pressure in the gas cylinder after the medium oil with the volume of a design value is filled into the gas cylinder and a second pressure in the gas cylinder after the medium oil with the volume of the design value flows back to the oil tank; the calculation control module is connected with the power mechanism, the calculation control mechanism can calculate the volume of a compensation value of the medium oil according to the first pressure and the second pressure, and the sum of the volume of the compensation value and the volume of the design value is used as the volume of an actual value of filling the medium oil.
According to one embodiment of the present invention, the pressure detection module includes a first pressure detection device and a second pressure detection device; the first pressure detection device is arranged on the oil injection pipeline to measure the first pressure; the second pressure detection device is arranged on the oil return pipeline to measure the second pressure.
According to one embodiment of the invention, the gas filling substation medium oil compensation system further comprises a liquid level meter; the liquid level meter is arranged on the oil tank and provides a continuous analog quantity signal according to the actual filling quantity.
According to one embodiment of the invention, the gas filling substation medium oil compensation system further comprises a protection module; the protection module compares the actual value with a preset protection value, and when the actual value is larger than the protection value, the protection module adjusts the filling volume of the medium oil to be the protection value.
According to one embodiment of the invention, the gas filling substation medium oil compensation system further comprises an alarm module; the alarm module compares an alarm value with the actual value according to a preset alarm value, and when the actual value is larger than or equal to the alarm value, the alarm module sends an alarm signal and controls the power mechanism to stop working.
According to another aspect of the invention, a filling substation medium oil compensation method is provided, which is used for compensation control of filling amount of medium oil to a gas cylinder from an oil tank of a filling substation, and comprises the following steps:
detecting pressure, respectively measuring a first pressure in the gas cylinder after the medium oil with a volume of a designed value is filled into the gas cylinder, and a second pressure in the gas cylinder after the medium oil with the volume of the designed value is conveyed back to the oil tank; and
and calculating compensation, namely calculating the volume of a compensation value of the medium oil according to the first pressure and the second pressure, and taking the sum of the volume of the compensation value and the volume of the design value as the volume of an actual value for filling the medium oil.
According to one embodiment of the present invention, the pressure detecting step includes:
detecting a first pressure, and arranging a first pressure detection device on a filling pipeline through which the medium oil flows when being filled into the gas cylinder from the oil tank so as to measure the first pressure; and
and detecting a second pressure, and arranging a second pressure detection device on an oil return pipeline through which the medium oil flows from the gas cylinder to the oil tank so as to measure the second pressure.
According to one embodiment of the invention, the filling substation medium oil compensation method further comprises the following steps:
and arranging a liquid level meter, and arranging the liquid level meter in the oil tank to provide a continuous analog quantity signal according to the actual filling quantity.
According to one embodiment of the invention, the filling substation medium oil compensation method further comprises the following steps:
and protecting the medium oil, wherein a protection module is arranged to compare a preset protection value with the actual value, and when the actual value is greater than the protection value, the protection module adjusts the filling volume of the medium oil to the protection value.
According to one embodiment of the invention, the filling substation medium oil compensation method further comprises the following steps:
the medium oil alarm system is characterized in that an alarm module is arranged to compare an alarm value with an actual value according to a preset alarm value, and when the actual value is larger than or equal to the alarm value, the alarm module sends an alarm signal and controls the power mechanism to stop working.
According to the technical scheme, the gas filling substation medium oil compensation system and the gas filling substation medium oil compensation method have the advantages and positive effects that:
the gas filling substation medium oil compensation system and the gas filling substation medium oil compensation method provided by the invention can calculate the compensation value that the oil return liquid level of the next gas cylinder needs to be increased on the basis of medium oil filling of the previous gas cylinder, thereby ensuring that enough medium oil is filled and ensuring the gas unloading rate.
Drawings
Various objects, features and advantages of the present invention will become more apparent from the following detailed description of preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale. In the drawings, like reference characters designate the same or similar parts throughout the different views. Wherein:
fig. 1 is a system schematic of a gas filling substation dielectric oil compensation system according to an exemplary embodiment;
FIG. 2 is a schematic illustration of a gas cylinder in a state of a gas filling sub-station medium oil compensation system according to an exemplary embodiment;
fig. 3 is a schematic diagram of a gas cylinder in another state of a gas filling substation medium oil compensation system according to an exemplary embodiment.
Wherein the reference numerals are as follows:
1. a gas cylinder; 2. an oil tank; 3. an oil injection pipeline; 4. an oil return line; 51. an oil pump; a 52 solenoid valve; 6. a pressure transmitter; 7. a pressure transmitter; 8. a liquid level meter.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.
In the following description of various exemplary embodiments of the invention, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the invention may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present invention. Moreover, although the terms "end," "between," and the like may be used in this specification to describe various example features and elements of the invention, these terms are used herein for convenience only, e.g., in accordance with the orientation of the examples described in the figures. Nothing in this specification should be construed as requiring a specific three dimensional orientation of structures in order to fall within the scope of the invention.
Implementation mode of medium oil compensation system of gas filling substation
Referring to fig. 1, a system schematic of a filling station dielectric oil compensation system that can embody principles of the present invention is representatively illustrated in fig. 1. In the exemplary embodiment, the gas filling substation medium oil compensation system provided by the present invention is exemplified by a Compressed Natural Gas (CNG) gas filling substation, and further exemplified by a hydraulic flat pusher substation, and the structure and function of the gas filling substation medium oil compensation system will be described. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions or other changes may be made to the embodiments described below in order to apply the filling station medium oil compensation system to a variety of other filling systems, and still be within the scope of the principles of the filling station medium oil compensation system set forth herein.
As shown in fig. 1, in this embodiment, the gas filling substation medium oil compensation system can be arranged in a gas filling substation, and the gas filling substation includes an oil tank 2 and a gas storage unit composed of a plurality of gas cylinders. The oil tank 2 can fill the medium oil into the gas cylinder 1 through the oil filling pipeline 3 through the power mechanism, and the gas cylinder 1 can return the medium oil to the oil tank 2 through the oil return pipeline 4 through the power mechanism. For example, in the present embodiment, the power mechanism may include an oil pump 51 and a solenoid valve 52. Wherein, the oil pump 51 is arranged on the oil injection pipeline 3 to pump the medium oil in the mailbox into the gas cylinder 1 through the oil injection pipeline 3, and the electromagnetic valve 52 is arranged on the oil return pipeline 4. When the medium oil is filled, the electromagnetic valve 52 is closed, the oil pump 51 works, and when the medium oil pump 51 with a certain volume is fed into the gas cylinder 1, the oil pump 51 is closed, namely the gas in the gas cylinder 1 is discharged. After the gas discharge of one gas cylinder 1 is completed, the electromagnetic valve 52 is opened, the medium oil in the gas cylinder 1 flows back to the oil tank 2, at the moment, the gas cylinder 1 is filled with the residual gas in the gas cylinder 1, the connection between the oil tank 2 and the gas cylinder 1 is disconnected by the gas supply pipeline, and the gas discharge of the other gas cylinder 1 can be carried out by connecting the other gas cylinder 1 with the oil tank 2.
As shown in fig. 1, in this embodiment, the gas filling substation medium oil compensation system provided by the present invention mainly includes a pressure detection module, a calculation control module, a liquid level meter 8, a protection module, and an alarm module.
As shown in fig. 1, in the present embodiment, the pressure detection module mainly includes a first pressure detection device and a second pressure detection device, and more preferably, two pressure transmitters 6 and 7. The pressure transmitter 6 is disposed on the oil injection pipeline 3, and further disposed on a section of the oil injection pipeline 3 between the oil pump 51 and the gas cylinder 1, and is configured to measure a first pressure in the gas cylinder 1 after a volume of a design value of the medium oil is injected into the gas cylinder 1. Specifically, a valve element connecting the oil filling pipeline 3 to the exhaust pipe of the gas cylinder 1 may be opened, so that the pressure of the section of the oil filling pipeline 3 between the gas cylinder 1 and the oil pump 51 is equal to the pressure in the gas cylinder 1, and thus the pressure value of the section of the oil filling pipeline 3 measured by the pressure transmitter 6 is the first pressure in the gas cylinder 1 at this time. Similarly, the pressure transmitter 7 is disposed on the oil return line 4, and further disposed on a section of the oil return line 4 between the solenoid valve 52 and the gas cylinder 1, for measuring a second pressure in the gas cylinder 1 after the volume of the medium oil of the above-mentioned design value is returned to the oil tank 2. It should be understood by those skilled in the art that the specific arrangement and equipment selection of the first pressure detection device and the second pressure detection device are mainly used for realizing the function of respectively measuring the first pressure and the second pressure of each gas cylinder 1 of the gas storage unit of the gas filling substation without changing the structure of the gas cylinder 1. However, in order to apply the gas filling substation medium oil compensation system to other various gas filling systems, various modifications, additions, substitutions, deletions or other changes are made to the pressure detection device, and the changes are still within the scope of the principle of the gas filling substation medium oil compensation system provided by the invention.
In this embodiment, the calculation control module is connected to the power mechanism, and may further include a calculation unit and an execution unit. The calculation control means can calculate a volume of a compensation value of the medium oil from the first pressure and the second pressure, and use a sum of the volume of the compensation value and the volume of the design value as a volume of an actual value of the medium oil to be filled. The calculation control module calculates the volume of the compensation value of the medium oil according to the following operation principle. The method specifically comprises the following steps:
the oil pump 51 or other pressurizing equipment pressurizes the medium oil under normal pressure in the oil tank 2 and injects the medium oil into the gas cylinder 1 through the oil injection pipeline 3, wherein the section of the oil tank 2 is certain and has a value of S, when the oil injection height reaches a specified height h (namely the liquid level of the oil tank 2 is reduced by the height h), the oil injection into the gas cylinder 1 is stopped, the system is stabilized in a first state, and at the moment, the first pressure detection device detects that the pressure in the gas cylinder 1 is P in the first state1. Opening the electromagnetic valve 52 of the driving mechanism, returning the medium oil in the gas cylinder 1 to the oil tank 2 through the oil return pipeline 4, monitoring the real-time oil return pressure by a second pressure detection device arranged on the oil return pipeline 4, and measuring a second pressure P after the oil return is finished2. At this time, the gas cylinder 1 is filled with the residual gas medium after gas discharge and is stabilized in a second state, and the gas discharge operation of one gas cylinder 1 of the gas storage unit of the gas filling substation is completed.
Referring to fig. 2 and 3 in conjunction, a schematic diagram of a gas cylinder in a state of a gas filling substation medium oil compensation system that can embody principles of the present invention is representatively illustrated in fig. 2. A schematic of a gas cylinder in another state of a gas filling sub-station media oil compensation system that can embody principles of the present invention is representatively shown in fig. 3. Specifically, fig. 2 shows a schematic diagram of the gas cylinder corresponding to the first state, in which the hatched portion is the medium oil filled in the gas cylinder 1 and the blank portion is the gas remaining in the gas cylinder 1. Fig. 3 shows a schematic view of the gas cylinder corresponding to a second state in which the blank part of the drawing is the state in which the gas cylinder 1 is filled with the remaining gas after the dielectric oil in fig. 2 is discharged.
As shown in fig. 2 and 3, it is assumed that the gas storage unit of the substation trailer of the gas filling substation has N gas cylinders 1, and the water volume of each gas cylinder 1 is V2Thus, during operation of the device, the pressure value P of the first pressure1Pressure value P corresponding to the second pressure2Respectively measured by a pressure detection device. When the gas filling substation operates for the first time, namely the first gas cylinder 1 is filled with liquid and discharged, the height h of the liquid level drop of the oil tank 2 corresponding to the volume of medium oil to be filled is defined according to the design requirement0When the system is in the first state, the pressure in the gas cylinder 1 is the first pressure P1The water volume of the residual gas in the gas cylinder 1 is V1. Oil return is started in the first state, after the oil return is finished, the gas cylinder 1 is filled with residual gas in the first state, the state is stabilized to the second state, and the pressure of the residual gas in the gas cylinder 1 is the second pressure P2. Based on the above set or measured values, the following formula can be used for calculation:
according to the gas conservation equation under the ideal state, P can be known1V1＝P2V2(ii) a That is, the above two states must be passed to complete the gas discharge operation of one gas cylinder 1, and the second state is the end point.
Assuming that the sectional area of the oil tank 2 is S, the standard liquid level of the injected oil tank 2 is h0If the actual filling level is h, the following relationship should be satisfied:
V1＝V2-hs
then
P1(V2-hs)＝P2V2
Then
h＝(P1-P2)V2/P1S
The liquid level difference between the actual liquid level and the standard liquid level can be obtained:
△h＝h-h0
when the next gas cylinder 1 is filled with oil and discharged with gas, the oil return liquid level needs to be increased by △ h on the basis of the calculation of the correlation value of the previous gas cylinder 1, that is, the compensation amount of the volume of the medium oil is △ V- △ hS, so that sufficient medium oil is filled, and the gas discharge rate of the gas cylinder 1 is ensured to the maximum extent.
It should be noted here that the filling station medium oil compensation system shown in the drawings and described in the present specification is only one example of a wide variety of filling station medium oil compensation systems that can employ the principles of the present invention. It should be clearly understood that the principles of the present invention are in no way limited to any of the details of the filling substation dielectric oil compensation system or any of the components of the filling substation dielectric oil compensation system shown in the drawings or described in the present specification.
For example, and not in order to comply with the principle of the present invention, as shown in fig. 1, in the present embodiment, the gas filling substation medium oil compensation system of the present invention further includes a liquid level meter 8, and the liquid level meter 8 is disposed on the oil tank 2 to provide a continuous analog quantity signal according to the actual filling quantity, so as to reflect the actual liquid level information of the oil tank 2 in real time.
However, the liquid level gauge 8 is not necessarily provided in every embodiment of the present invention. As will be appreciated by those skilled in the art. In order to apply the gas filling substation medium oil compensation system to other various gas filling systems, the liquid level meter 8 is subjected to various modifications, additions, substitutions, deletions or other changes, and the changes are still within the scope of the principle of the gas filling substation medium oil compensation system provided by the invention.
For another example, but not in order to meet the principle of the present invention, as shown in fig. 1, in this embodiment, the gas filling substation medium oil compensation system provided by the present invention further includes a protection module, where the protection module compares a preset protection value with an actual value of a volume of the gas cylinder 1 filled with the medium oil by the oil tank 2, and when the actual value is greater than the protection value, the protection module adjusts the filling volume of the medium oil to the protection value.
However, in not every embodiment of the present invention, a protection module is necessarily provided. As will be appreciated by those skilled in the art. In order to apply the gas filling substation medium oil compensation system to other various gas filling systems, the protection module is subjected to various modifications, additions, substitutions, deletions or other changes, and the changes are still within the scope of the principle of the gas filling substation medium oil compensation system provided by the invention.
For another example, not in order to comply with the principle of the present invention, as shown in fig. 1, in this embodiment, the gas filling substation medium oil compensation system provided by the present invention further includes an alarm module, where the alarm module compares a preset alarm value with an actual value of a volume of the gas cylinder 1 filled with medium oil by the oil tank 2, and when the actual value is greater than or equal to the alarm value, the alarm module sends an alarm signal and controls the power mechanism to stop working.
However, in not every embodiment of the present invention, an alarm module is necessarily provided. As will be appreciated by those skilled in the art. In order to apply the gas filling substation medium oil compensation system to other various gas filling systems, the alarm module is subjected to various modifications, additions, substitutions, deletions or other changes, and the changes are still within the scope of the principle of the gas filling substation medium oil compensation system provided by the invention.
Method for compensating medium oil in gas filling substation
One exemplary embodiment of the method for filling substation medium oil compensation according to the present invention is further described below.
In this embodiment, the gas filling substation medium oil compensation method provided by the invention can be used for compensation control of the filling amount of the gas filling substation oil tank for filling medium oil into the gas cylinder. Specifically, the filling substation medium oil compensation method mainly comprises the following steps:
detecting pressure, including detecting a first pressure, that is, setting a first pressure detecting device on a filling pipeline through which the medium oil flows when being filled from the oil tank to the gas cylinder, so as to measure the first pressure in the gas cylinder after the medium oil with a volume of a designed value is filled into the gas cylinder; and simultaneously, detecting a second pressure, namely arranging a second pressure detection device on an oil return pipeline through which the medium oil flows from the gas cylinder to the oil tank, so as to measure a second pressure in the gas cylinder after the medium oil with the volume equal to a designed value is conveyed to the oil return tank.
And calculating compensation, namely calculating the volume of a compensation value of the medium oil according to the first pressure and the second pressure, and taking the sum of the volume of the compensation value and the volume of a design value as the volume of an actual value of filled medium oil.
A liquid level meter is arranged, and a liquid level meter is arranged in the oil tank to provide a continuous analog quantity signal according to the actual filling quantity.
And (4) protecting the medium oil, wherein a protection module is arranged to compare a preset protection value with an actual value, and when the actual value is greater than the protection value, the protection module adjusts the filling volume of the medium oil to the protection value.
The medium oil alarm is provided with an alarm module, so that the alarm module compares an alarm value with an actual value according to the preset alarm value, and when the actual value is greater than or equal to the alarm value, the alarm module sends an alarm signal and controls the power mechanism to stop working.
It should be noted that, in the above description of an exemplary embodiment of the method for compensating filling station medium oil according to the present invention, the steps may be performed sequentially, and the steps may be performed simultaneously or sequentially. For example, for filling and discharging the same cylinder, the step of detecting the pressure should generally precede the step of calculating the compensation. As will be appreciated by those skilled in the art. In order to apply the filling substation medium oil compensation method to other various filling systems, a plurality of modifications, inversions, substitutions, deletions or other changes are made to the implementation mode or sequence of the steps, and the changes are still within the scope of the principle of the filling substation medium oil compensation method provided by the invention.
In summary, the gas filling substation medium oil compensation method provided by the invention can realize medium oil compensation through two key steps of pressure detection and calculation compensation. The pressure detection step is to measure a first pressure in the gas cylinder after the medium oil with the volume of a designed value is filled into the gas cylinder and a second pressure in the gas cylinder after the medium oil with the volume of the designed value is conveyed back to the oil tank. And the calculating and compensating step is to calculate the volume of a compensation value of the medium oil according to the first pressure and the second pressure, and take the sum of the volume of the compensation value and the volume of a design value as the volume of an actual value of the filled medium oil.
According to the technical scheme, the gas filling substation medium oil compensation system and the gas filling substation medium oil compensation method have the advantages and positive effects that the gas filling substation medium oil compensation system and the gas filling substation medium oil compensation method can calculate the compensation value of the oil return liquid level of the next gas cylinder which needs to be increased on the basis of medium oil filling of the previous gas cylinder, so that enough medium oil amount is ensured to be filled, and the gas unloading rate is ensured.
Meanwhile, in some exemplary embodiments of the present invention, the safe and normal operation of the device may be further ensured through the arrangement of the protection module and/or the alarm module. When the oil filling amount of the oil tank exceeds the volume corresponding to the protection value set by the protection module, the system can automatically define the oil return point to the protection value and remind the equipment of supplementing medium oil. And if the oil filling amount of the oil tank reaches or exceeds the liquid level alarm value set by the alarm module, the alarm module gives an alarm and stops the whole system to wait for a user to detect and process faults.
By utilizing the gas filling substation medium oil compensation system or the gas filling substation medium oil compensation method provided by the invention, the oil filling system of the gas filling substation only needs to measure the pressure values of the oil filling pipeline and the oil return pipeline, and can automatically adjust the oil filling amount of the oil tank to the next gas cylinder through calculation, so that the oil filling amount of the gas cylinder can be increased to the maximum extent, and the gas discharging rate is ensured to the maximum extent. Through test and analysis, the gas discharge amount compensated by the method can reach 98 percent at most, and is higher than the gas discharge rate of 90 to 95 percent of the existing gas filling substation.
Exemplary embodiments of the filling substation medium oil compensation system and the filling substation medium oil compensation method according to the present invention are described and/or illustrated in detail above. Embodiments of the invention are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or step of one embodiment can also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. described and/or illustrated herein, the articles "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and the description are used merely as labels, and are not numerical limitations of their objects.
Although the gas filling substation dielectric oil compensation system and the gas filling substation dielectric oil compensation method according to the present invention have been described with reference to various specific embodiments, those skilled in the art will recognize that the invention can be practiced with modification within the spirit and scope of the claims.

Claims (10)

1. The utility model provides a gas filling substation medium oil compensation system sets up in a gas filling substation, the gas filling substation includes gas cylinder (1) and oil tank (2), oil tank (2) can be filled medium oil via oil injection pipeline (3) to gas cylinder (1) through power unit, gas cylinder (1) can pass through power unit will medium oil flows back via returning oil pipeline (4) to oil tank (2), gas filling substation medium oil compensation system includes:
the pressure detection module can respectively measure a first pressure in the gas cylinder (1) after the medium oil with the volume of a designed value is filled into the gas cylinder (1), and a second pressure in the gas cylinder (1) after the medium oil with the volume of the designed value flows back to the oil tank (2); and
and the calculation control mechanism can calculate the volume of a compensation value of the medium oil according to the first pressure and the second pressure, and the sum of the volume of the compensation value and the volume of the design value is used as the volume of an actual value for filling the medium oil.
2. The substation media oil compensation system of claim 1, wherein the pressure detection module comprises:
the first pressure detection device is arranged on the oil injection pipeline (3) and used for measuring the first pressure; and
and the second pressure detection device is arranged on the oil return pipeline (4) to measure the second pressure.
3. The gas substation dielectric oil compensation system of claim 1, further comprising:
the liquid level meter (8) is arranged on the oil tank (2), and the liquid level meter (8) provides a continuous analog quantity signal according to the actual filling quantity.
4. The gas substation dielectric oil compensation system of claim 1, further comprising:
and the protection module compares the actual value with a preset protection value, and when the actual value is greater than the protection value, the protection module adjusts the filling volume of the medium oil to be the protection value.
5. The gas substation dielectric oil compensation system of claim 1, further comprising:
and the alarm module compares the preset alarm value with the actual value, and when the actual value is greater than or equal to the alarm value, the alarm module sends an alarm signal and controls the power mechanism to stop working.
6. A filling substation medium oil compensation method is used for compensation control of filling amount of medium oil filled into a gas cylinder by an oil tank of a filling substation, and comprises the following steps:
detecting pressure, respectively measuring a first pressure in the gas cylinder after the medium oil with a volume of a designed value is filled into the gas cylinder, and a second pressure in the gas cylinder after the medium oil with the volume of the designed value is conveyed back to the oil tank; and
and calculating compensation, namely calculating the volume of a compensation value of the medium oil according to the first pressure and the second pressure, and taking the sum of the volume of the compensation value and the volume of the design value as the volume of an actual value for filling the medium oil.
7. A gas filling substation medium oil compensation method according to claim 6, wherein the pressure detection step comprises:
detecting a first pressure, and arranging a first pressure detection device on a filling pipeline through which the medium oil flows when being filled into the gas cylinder from the oil tank so as to measure the first pressure; and
and detecting a second pressure, and arranging a second pressure detection device on an oil return pipeline through which the medium oil flows from the gas cylinder to the oil tank so as to measure the second pressure.
8. A filling substation medium oil compensation method according to claim 6, further comprising:
and arranging a liquid level meter, and arranging the liquid level meter in the oil tank to provide a continuous analog quantity signal according to the actual filling quantity.
9. A filling substation medium oil compensation method according to claim 6, further comprising:
and protecting the medium oil, wherein a protection module is arranged to compare a preset protection value with the actual value, and when the actual value is greater than the protection value, the protection module adjusts the filling volume of the medium oil to the protection value.
10. The filling substation dielectric oil compensation method of claim 6, the oil tank being configured to fill the dielectric oil to the gas cylinder by a power mechanism, the filling substation dielectric oil compensation method further comprising:
the medium oil alarm system is characterized in that an alarm module is arranged to compare an alarm value with an actual value according to a preset alarm value, and when the actual value is larger than or equal to the alarm value, the alarm module sends an alarm signal and controls the power mechanism to stop working.
CN201511026966.3A 2015-12-31 2015-12-31 Gas filling substation medium oil compensation system and gas filling substation medium oil compensation method Active CN106931305B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201511026966.3A CN106931305B (en) 2015-12-31 2015-12-31 Gas filling substation medium oil compensation system and gas filling substation medium oil compensation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201511026966.3A CN106931305B (en) 2015-12-31 2015-12-31 Gas filling substation medium oil compensation system and gas filling substation medium oil compensation method

Publications (2)

Publication Number Publication Date
CN106931305A CN106931305A (en) 2017-07-07
CN106931305B true CN106931305B (en) 2020-07-03

Family

ID=59441521

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201511026966.3A Active CN106931305B (en) 2015-12-31 2015-12-31 Gas filling substation medium oil compensation system and gas filling substation medium oil compensation method

Country Status (1)

Country Link
CN (1) CN106931305B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0868494A (en) * 1994-08-29 1996-03-12 Tokyo Gas Co Ltd Gas feeder
CN201161923Y (en) * 2006-12-25 2008-12-10 安瑞科(廊坊)能源装备集成有限公司 Gas feeding substation system for hydraulic natural gas automobile
CN201249750Y (en) * 2008-08-07 2009-06-03 四川金科环保科技有限公司 Gas filling sub-station system for natural gas car
CN102705702A (en) * 2012-06-21 2012-10-03 重庆耐德能源装备集成有限公司 Auxiliary unit used for hydraulic horizontal-pushing pressurizer and hydraulic horizontal-pushing pressurizer
CN103185200A (en) * 2011-12-31 2013-07-03 安瑞科(廊坊)能源装备集成有限公司 Gas conveying system and gas conveying method
CN104266081A (en) * 2014-09-11 2015-01-07 新兴能源装备股份有限公司 Automobile gas filling sub-station for hydraulic natural gas
CN104747904A (en) * 2013-12-27 2015-07-01 安瑞科(廊坊)能源装备集成有限公司 Hydraulic type compressed natural gas secondary filling station and control method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0868494A (en) * 1994-08-29 1996-03-12 Tokyo Gas Co Ltd Gas feeder
CN201161923Y (en) * 2006-12-25 2008-12-10 安瑞科(廊坊)能源装备集成有限公司 Gas feeding substation system for hydraulic natural gas automobile
CN201249750Y (en) * 2008-08-07 2009-06-03 四川金科环保科技有限公司 Gas filling sub-station system for natural gas car
CN103185200A (en) * 2011-12-31 2013-07-03 安瑞科(廊坊)能源装备集成有限公司 Gas conveying system and gas conveying method
CN102705702A (en) * 2012-06-21 2012-10-03 重庆耐德能源装备集成有限公司 Auxiliary unit used for hydraulic horizontal-pushing pressurizer and hydraulic horizontal-pushing pressurizer
CN104747904A (en) * 2013-12-27 2015-07-01 安瑞科(廊坊)能源装备集成有限公司 Hydraulic type compressed natural gas secondary filling station and control method thereof
CN104266081A (en) * 2014-09-11 2015-01-07 新兴能源装备股份有限公司 Automobile gas filling sub-station for hydraulic natural gas

Also Published As

Publication number Publication date
CN106931305A (en) 2017-07-07

Similar Documents

Publication Publication Date Title
US8122918B2 (en) Pressure differential system for controlling high pressure refill gas flow into on board vehicle fuel tanks
US10815118B2 (en) Mobile distribution station having sensor communication lines routed with hoses
US9815683B1 (en) Method and system for mobile distribution station
CN101907541B (en) Pipeline pressure testing device
CN103075286B (en) Method and device for detecting fault of high-pressure oil pump incapable of establishing low rail pressure
CN201413278Y (en) Pipeline pressure testing device
JP6768687B2 (en) How and equipment to fill the tank
CN105692538B (en) A kind of speed changer filling oil system and method
CN102192859B (en) Pressure container corrosion fatigue testing device with closed-loop control
CN103033426B (en) A kind of pulse detection system and method for testing
CN106931305B (en) Gas filling substation medium oil compensation system and gas filling substation medium oil compensation method
CN106052790A (en) Gas monitoring device and method and gas storage device
CN203011494U (en) Pneumatic liquid adding verification device for float type liquid level sensor
CN107389463B (en) Water recycling system for water pressure detection of gas cylinder
US20100212763A1 (en) Well gauging system and method
CN202177402U (en) Accuracy detection system of micro leakage quantity of fuel injector for hydraulic automobile
CN109025923A (en) Obtain the device of water injection indication curve
CN208107608U (en) The full-automatic lubricating system of bus type intelligent
CN202402022U (en) Self-balanced double-tank thickened oil metering device
CN208275380U (en) The acid cycle system of expansible graphite and high-carbon graphite Joint Production
CN208313719U (en) A kind of gas cylinder hydraulic pressure detection water cycle utilization device
CN113702010A (en) Hydrogenation station, test system and test method thereof, hydrogenation machine and station control device
CN206132151U (en) Novel fuel oil consumption flowmeter
CN205715065U (en) A kind of hydraulic state detection maintenance cart
CN217542681U (en) Intelligent water inlet pipe pressure testing machine for water inlet pipe construction detection

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant