CN110886965A - Filling system - Google Patents
Filling system Download PDFInfo
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- CN110886965A CN110886965A CN201811044773.4A CN201811044773A CN110886965A CN 110886965 A CN110886965 A CN 110886965A CN 201811044773 A CN201811044773 A CN 201811044773A CN 110886965 A CN110886965 A CN 110886965A
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- filling
- filling pump
- pump
- valve
- output end
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/12—Arrangements for supervising or controlling working operations for injecting a composition into the line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
Abstract
The invention provides a filling system, comprising: a liquid storage tank and a filling pump; the input end of the filling pump is connected with the liquid storage tank, the output end of the filling pump is used for being connected with a control valve, the control valve is used for being connected with an oil-gas pipeline, the filling pump is used for injecting a filling medium in the liquid storage tank into the oil-gas pipeline, and the filling medium is a volatile or easily vaporized liquid medium; the filling device comprises a filling pump, an exhaust valve and a control valve, wherein the input end of the filling pump is provided with the exhaust valve, and the exhaust valve is used for exhausting gas generated by the filling medium at the input end of the filling pump when the filling pump does not add a quantity. The filling system provided by the invention solves the problem that the filling pump cannot be filled due to vaporization of the filling medium in the filling system, and can ensure the smooth operation of the filling process.
Description
Technical Field
The invention relates to the field of petroleum transmission, in particular to a filling system.
Background
In the transportation mode of petroleum and natural gas, the most common transportation mode is a pipeline transportation mode, but in the process of oil and gas pipeline transportation, the inner wall of the oil and gas pipeline is easily corroded by a transportation medium in the oil and gas pipeline, hydrates are generated, freezing and blocking are generated, and the service life and normal operation of the oil and gas pipeline are seriously influenced.
In order to reduce the damage of the oil-gas pipeline, in the prior art, a filling pump can be generally arranged on the oil-gas pipeline, and filling media are filled into the oil-gas pipeline with pressure by pressurizing the filling pump so as to reduce the damage and frozen blockage of the oil-gas pipeline.
However, in the filling process in the prior art, the filling medium is generally a volatile or easily gasified liquid medium, such as various inhibitors, and the filling medium at the inlet end of the filling pump is easy to generate a vaporization effect under the action of the suction pressure of the pump, so that the filling pump does not add a large amount of liquid and generates severe vibration, and the filling process is influenced.
Disclosure of Invention
The invention provides a filling system, which is used for eliminating the vaporization phenomenon of a filling medium in the filling system and ensuring the smooth operation of the filling process.
The invention provides a filling system, comprising: a liquid storage tank and a filling pump;
the input end of the filling pump is connected with the liquid storage tank, the output end of the filling pump is used for being connected with a control valve, the control valve is used for being connected with an oil-gas pipeline, the filling pump is used for injecting a filling medium in the liquid storage tank into the oil-gas pipeline, and the filling medium is a volatile or easily vaporized liquid medium;
the filling device comprises a filling pump, an exhaust valve and a control valve, wherein the input end of the filling pump is provided with the exhaust valve, and the exhaust valve is used for exhausting gas generated by the filling medium at the input end of the filling pump when the filling pump does not add a quantity.
According to the filling system provided by the embodiment of the invention, when the filling medium at the input end of the filling pump generates a vaporization effect under the action of the suction pressure of the pump, the exhaust valve can be opened, and the gas at the input end of the filling pump is exhausted out of the pipeline, so that the influence of the vaporization phenomenon on the filling pump can be avoided, and the smooth filling process is ensured; the output end of the exhaust valve is connected to the top of the liquid storage tank, so that leakage of toxic filling media can be avoided, the safety is high, and waste of the filling media is avoided; the filling system also controls the filling flow of the filling medium through the control valve, and can better avoid the damage of the oil-gas pipeline.
The filling system as described above, further comprising: a controller and a flow detection device;
the flow detection device is arranged at the output end of the filling pump, and the controller is electrically connected with the flow detection device and the exhaust valve respectively and used for controlling the exhaust valve to be opened when the flow detected by the flow detection device is smaller than or equal to a preset threshold value.
The preset threshold value is zero.
The filling system as described above, further comprising: a safety valve is arranged on the upper portion of the safety valve,
the safety valve is connected between the input end of the filling pump and the output end of the filling pump, and when the pressure difference between the input end of the filling pump and the output end of the filling pump exceeds a preset value, the safety valve is opened to communicate the input end and the output end.
The first end of the exhaust valve is connected to the input end of the filling pump; the second end of the exhaust valve is connected to the top end of the liquid storage tank or is an emptying end.
The filling system as described above, further comprising: a pressure gauge is arranged on the base plate,
the pressure gauge is arranged at the output end of the filling pump and used for detecting pressure information of the output end of the filling pump.
The filling system as described above, further comprising: an alarm device is arranged on the base plate,
the alarm is electrically connected with the flow detection device or the controller and used for giving an alarm when the flow detected by the flow detection device is smaller than or equal to the preset threshold value.
The filling pump comprises a piston drive for driving the flow of the filling medium by means of a piston movement.
The input of piston driver is connected with first check valve, the circulation direction of first check valve is the orientation piston driver's direction, piston driver's output is connected with the second check valve, the circulation direction of second check valve is for keeping away from piston driver's direction.
A filter is also arranged between the liquid storage tank and the liquid inlet of the filling pump.
According to the filling system provided by the embodiment of the invention, when the filling medium at the input end of the filling pump generates a vaporization effect under the action of the suction pressure of the pump, the exhaust valve can be opened, and the gas at the input end of the filling pump is exhausted out of the pipeline, so that the influence of the vaporization phenomenon on the filling pump can be avoided, and the smooth filling process is ensured; the output end of the exhaust valve is connected to the top of the liquid storage tank, so that leakage of toxic filling media can be avoided, the safety is high, and waste of the filling media is avoided; the filling system also controls the filling flow of the filling medium through a control valve, so that the damage to an oil-gas pipeline can be better avoided; by arranging the controller and the flow detection device, when the flow detection device detects that the flow is zero, the controller controls the exhaust valve to be opened, so that the filling amount of liquid at the inlet of the pump is increased to reduce the occurrence of the cutoff phenomenon; further, this embodiment still provides alarm device, and when flow detection device detected that the flow is zero, it appeared the cutout phenomenon to judge the filling pump, and alarm device sent the warning, reminded the staff in time to handle, further avoided the cutout phenomenon to influence the filling work.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a filling system according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a filling system according to a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a fill pump according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a filling system according to a third embodiment of the present invention;
fig. 5 is a schematic structural diagram of another filling system provided in the third embodiment of the present invention;
fig. 6 is a schematic structural diagram of a filling system according to a fourth embodiment of the present invention.
Reference numerals:
1-liquid storage tank
2-filling pump
21-piston drive
22-first check valve
23-second check valve
3-control valve
4-exhaust valve
5-controller
6-flow detection device
7-safety valve
8-pressure gauge
9-alarm
10-filter
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Fig. 1 is a schematic structural diagram of a filling system according to an embodiment of the present invention, and referring to fig. 1, the embodiment of the present invention provides a filling system, including: a liquid storage tank 1 and a filling pump 2;
the input end of the filling pump 2 is connected to the liquid storage tank 1, the output end of the filling pump 2 is used for being connected with a control valve 3, the control valve 3 is used for being connected with an oil-gas pipeline, the filling pump 2 is used for injecting a filling medium in the liquid storage tank 1 into the oil-gas pipeline, and the filling medium is a volatile or easily vaporized liquid medium;
the input end of the filling pump 2 is provided with an exhaust valve 4, and the exhaust valve 4 is used for exhausting gas generated by the filling medium at the input end of the filling pump 2 when the filling pump 2 is not in the upper-volume state.
Wherein, the liquid storage tank 1 is used for storing and filling media, and the filling media can be methanol, glycol, corrosion inhibitor, inhibitor and the like; the filling pump 2 can be of various types, for example: the device comprises a plunger type filling pump 2, a diaphragm type filling pump 2 and the like, wherein the filling pump 2 is used for filling a filling medium into a pressurized oil-gas pipeline to enable the filling medium to enter the oil-gas pipeline so as to protect the inner wall of the oil-gas pipeline from being damaged.
The exhaust valve 4 is arranged at the input end of the filling pump 2 in a bypass mode, a filling medium at the input end of the filling pump 2 is easy to generate a vaporization effect under the action of suction pressure of the filling pump 2, when the exhaust valve 4 is opened, gas in a pipeline between the liquid storage tank 1 and the filling pump 2 can be exhausted, and the phenomenon that the filling effect is influenced by pump body vibration caused by the fact that the filling pump 2 is not in high volume is avoided.
In the specific filling process, when a filling medium needs to be input into the oil-gas pipeline, the exhaust valve 4 is closed, the control valve 3 is opened, and the filling medium in the liquid storage tank 1 is injected into the oil-gas pipeline through the filling pump 2; when the input end of the filling pump 2 generates vaporization phenomenon to enable the flow rate to be zero and not to be increased, the exhaust valve 4 can be opened to enable the gas at the input end of the filling pump 2 to be exhausted, after the gas is exhausted completely, the exhaust valve 4 is closed, and the filling medium in the liquid storage tank 1 is injected into the oil-gas pipeline through the filling pump 2.
Further, the output end of the filling pump 2 is connected with the input end of a control valve 3, and the output end of the control valve 3 is used for being connected with an oil-gas pipeline. In this embodiment, the control valve 3 can control the flow rate of the output end of the filling pump 2, and further control the injection flow rate of the filling medium, so that a proper amount of the filling medium can be injected into the oil-gas pipeline, which not only can better avoid the damage of the oil-gas pipeline, but also can reduce the waste of the filling medium.
In this embodiment, the first end of the exhaust valve is connected to the input end of the filling pump; the second end of the exhaust valve is connected to the top end of the liquid storage tank or is an emptying end. Since many liquid media in the liquid storage tank 1 may have toxicity and may be vaporized into toxic gas at the inlet of the filling pump 2, and if the toxic gas is discharged into a special gas storage container, the equipment cost is increased, so the toxic gas is discharged into the liquid storage tank 1 in the embodiment, the toxic gas is mainly formed by vaporizing the liquid in the liquid storage tank 1, and after the toxic gas enters the liquid storage tank 1, the toxic gas can be liquefied into the filling medium to be stored in the liquid storage tank 1 due to the lower pressure in the liquid storage tank 1, so that the cost is saved, and the waste of the filling medium can be avoided. In addition, the output end of the exhaust valve 4 is connected to the top of the liquid storage tank 1, and according to the principle of a communicating vessel, the inlet of the pump is kept in a full pipe state under the action of the high potential energy of the liquid in the liquid storage tank 1; the vaporized gas comes from the liquid in the liquid storage tank 1, the states of the vaporized gas are different but the physical properties and the characteristics are basically consistent, and the vaporized gas is input into the liquid storage tank because the liquid storage tank is a closed device, so that the gas leakage can be avoided, and the safety is ensured.
According to the filling system provided by the embodiment of the invention, when the filling medium at the input end of the filling pump generates a vaporization effect under the action of the suction pressure of the pump, the exhaust valve can be opened, and the gas at the input end of the filling pump is exhausted out of the pipeline, so that the influence of the vaporization phenomenon on the filling pump can be avoided, and the smooth filling process is ensured; the output end of the exhaust valve is connected to the top of the liquid storage tank, so that leakage of toxic filling media can be avoided, the safety is high, and waste of the filling media is avoided; the filling system also controls the filling flow of the filling medium through the control valve, and can better avoid the damage of the oil-gas pipeline.
Example two
Fig. 2 is a schematic structural diagram of a filling system according to a second embodiment of the present invention, and referring to fig. 2, in this embodiment, a first end of an exhaust valve 4 is connected between a liquid storage tank 1 and a filling pump 2; the second end of the exhaust valve 4 is a vent end.
In the embodiment, the vaporized gas of the nontoxic filling medium is also nontoxic and harmless, and at the moment, the output end of the exhaust valve 4 can be communicated with the atmosphere, so that the gas is directly discharged into the atmosphere, and the cost is saved.
Fig. 3 is a schematic structural diagram of a filling pump according to an embodiment of the present invention, and referring to fig. 3, in this embodiment, the filling pump 2 includes a piston driver 21, and the piston driver 21 is configured to drive a filling medium to flow through a piston movement.
The input end of the piston driver 21 is connected with a first one-way valve 22, the flow direction of the first one-way valve 22 is the direction towards the piston driver 21, the output end of the piston driver 21 is connected with a second one-way valve 23, and the flow direction of the second one-way valve 23 is the direction far away from the piston driver.
When the piston in the piston driver 21 moves to enable the volume of the piston cavity to be increased, the pressure in the piston cavity is reduced, the first one-way valve 22 is opened, the second one-way valve 23 is closed, the filling medium in the liquid storage tank 1 flows into the piston cavity, when the piston in the piston driver 21 moves to enable the volume of the piston cavity to be decreased, the pressure in the piston cavity is increased, the first one-way valve 22 is closed, the second one-way valve 23 is opened, the filling medium in the piston cavity can be injected into the oil and gas pipeline through the second one-way valve 23 to achieve filling work, and the filling medium in the liquid storage tank 1 can be continuously injected into the oil and gas pipeline through reciprocating motion of the piston in the piston driver to achieve filling work.
Alternatively, the filling pump type may be other than a piston driver, for example: diaphragm metering pumps, and the like, without limitation herein.
According to the filling system provided by the embodiment of the invention, when the filling medium at the input end of the filling pump generates a vaporization effect under the action of the suction pressure of the pump, the exhaust valve can be opened, and the gas at the input end of the filling pump is exhausted out of the pipeline, so that the influence of the vaporization phenomenon on the filling pump can be avoided, and the smooth filling process is ensured; the output end of the exhaust valve is a discharge end, so that the exhaust valve is suitable for gas discharge of nontoxic media and is low in cost; the filling system also controls the filling flow of the filling medium through a control valve, so that the damage to an oil-gas pipeline can be better avoided; the filling system adopts a piston driver, and is matched with the one-way valve together to realize filling work, and the structure is reliable.
EXAMPLE III
Fig. 4 is a schematic structural diagram of a filling system provided in a third embodiment of the present invention, and referring to fig. 4, the filling system provided in the third embodiment of the present invention further includes: a controller 5 and a flow detection device 6;
the flow detection device 6 is arranged at the output end of the filling pump 2, and the controller 5 is respectively electrically connected with the flow detection device 6 and the exhaust valve 4 and is used for controlling the exhaust valve 4 to be opened when the flow detected by the flow detection device is less than or equal to a preset threshold value.
The flow detection device 6 is used for detecting the flow of the output end of the filling pump 2 in real time, and when the flow information of the flow detection device 6 is smaller than or equal to a preset threshold value, the controller 5 controls the exhaust valve 4 to be opened. In this embodiment, when the flow information of the flow detection device 6 is less than or equal to the preset threshold, it may be determined that the filling pump 2 has a local shut-off phenomenon, and at this time, the controller 5 may control the exhaust valve 4 to open, so that the gas at the input end of the filling pump 2 may be exhausted, so as to enable the filling pump 2 to be at a high volume, so as to avoid the shut-off phenomenon from occurring again.
Optionally, the preset threshold is zero. When the flow rate information of the flow rate detection device 6 is zero, the controller 5 controls the exhaust valve 4 to be opened. When the flow information of the flow detection device 6 is equal to zero, it can be judged that the filling pump 2 has a cutoff phenomenon, and at the moment, the controller 5 can control the exhaust valve 4 to be opened, so that the gas at the input end of the filling pump 2 can be exhausted to recover the normal flow.
Fig. 5 is a schematic structural diagram of another filling system provided in the third embodiment of the present invention, and referring to fig. 5, the filling system provided in this embodiment further includes: and the safety valve 7 is connected between the input end of the filling pump 2 and the output end of the filling pump 2, and when the pressure difference between the input end of the filling pump 2 and the output end of the filling pump 2 exceeds a preset value, the safety valve 7 is opened to communicate the input end and the output end of the filling pump 2.
In this embodiment, when the pressure at the output end of the filling pump 2 is high, in order to avoid damage to the pipeline device, the output end of the filling pump 2 may be provided with the safety valve 7, the safety valve 7 is in a normally closed state, and when the pressure at the input end of the safety valve 7 reaches a preset value, the safety valve 7 may be opened to communicate the input end and the output end of the filling pump 2, so that the pressure at the output end of the filling pump 2 may be reduced to protect the pipeline device from overpressure damage.
According to the filling system provided by the embodiment of the invention, when the filling medium at the input end of the filling pump generates a vaporization effect under the action of the suction pressure of the pump, the exhaust valve can be opened, and the gas at the input end of the filling pump is exhausted out of the pipeline, so that the influence of the vaporization phenomenon on the non-excessive amount of the filling pump can be avoided, and the smooth filling process is ensured; the output end of the exhaust valve is connected to the top of the liquid storage tank, so that leakage of toxic filling media can be avoided, the safety is high, and waste of the filling media is avoided; the filling system also controls the filling flow of the filling medium through a control valve, so that the damage to an oil-gas pipeline can be better avoided; by arranging the controller and the flow detection device, when the flow detection device detects that the flow is zero, the controller controls the exhaust valve to be opened, so that the occurrence of a cutoff phenomenon is reduced; the embodiment also provides a safety valve which is used for communicating the input end and the output end of the filling pump and protecting the pipeline device from being damaged by overpressure.
Example four
Fig. 6 is a schematic structural diagram of a filling system provided in a fourth embodiment of the present invention, and referring to fig. 6, the filling system provided in this embodiment further includes: and the pressure gauge 8 is arranged at the output end of the filling pump 2, and is used for detecting the pressure information of the output end of the filling pump 2. The outlet end pressure of the filling pump 2 can be detected in real time through the pressure gauge 8, when the outlet end pressure information of the filling pump 2 detected by the pressure gauge 8 fluctuates greatly, a worker can timely handle the pressure information, and damage to devices in a pipeline system is avoided.
Further, the filling system provided by this embodiment further includes: and the alarm 9 are electrically connected with the flow detection device 6 or the controller 5 and are used for giving an alarm when the flow detected by the flow detection device 6 is less than or equal to a preset threshold value.
When the flow information detected by the flow detection device 6 is zero, the phenomenon of flow break of the filling pump 2 can be judged, and the alarm 9 can give an alarm to remind a worker to process in time so as to prevent the filling pump 2 from vibrating and influencing filling work.
On the basis of the above embodiment, a filter 10 is further arranged between the liquid storage tank 1 and the liquid inlet of the filling pump 2. Because the filling medium in the liquid storage tank 1 often has some impurities with larger particles, and the impurities with larger particles can damage the filling pump 2 after entering the filling pump 2, and the service life of the filling pump 2 is influenced, therefore, the filter 10 is arranged, the filter 10 can filter out large-particle impurities in the filling medium, and the service life of the filling pump 2 can be prolonged.
According to the filling system provided by the embodiment of the invention, when the filling medium at the input end of the filling pump generates a vaporization effect under the action of the suction pressure of the pump, the exhaust valve can be opened, and the gas at the input end of the filling pump is exhausted out of the pipeline, so that the influence of the vaporization phenomenon on the filling pump can be avoided, and the smooth filling process is ensured; the output end of the exhaust valve is connected to the top of the liquid storage tank, so that leakage of toxic filling media can be avoided, the safety is high, and waste of the filling media is avoided; the filling system also controls the filling flow of the filling medium through a control valve, so that the damage to an oil-gas pipeline can be better avoided; by arranging the controller and the flow detection device, when the flow detection device detects that the flow is zero, the controller controls the exhaust valve to be opened, so that the occurrence of a cutoff phenomenon is reduced; further, this embodiment still provides alarm device, and when flow detection device detected that the flow is zero, it appeared the cutout phenomenon to judge the filling pump, and alarm device sent the warning, reminded the staff in time to handle, further avoided the cutout phenomenon to influence the filling work.
In the description of the present invention, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", and the like, are used to indicate an orientation or positional relationship based on that shown in the drawings, merely to facilitate the description of the invention and to simplify the description, and do not indicate or imply that the position or element referred to must have a particular orientation, be of particular construction and operation, and thus, are not to be construed as limiting the invention.
Furthermore, 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 invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integral; may be mechanically coupled, may be electrically coupled or may be in communication with each other; either directly or indirectly through intervening media, such as through internal communication or through an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A filling system, comprising: a liquid storage tank and a filling pump;
the input end of the filling pump is connected with the liquid storage tank, the output end of the filling pump is used for being connected with a control valve, the control valve is used for being connected with an oil-gas pipeline, the filling pump is used for injecting a filling medium in the liquid storage tank into the oil-gas pipeline, and the filling medium is a volatile or easily vaporized liquid medium;
the filling device comprises a filling pump, an exhaust valve and a control valve, wherein the input end of the filling pump is provided with the exhaust valve, and the exhaust valve is used for exhausting gas generated by the filling medium at the input end of the filling pump when the filling pump does not add a quantity.
2. The filling system of claim 1, further comprising: a controller and a flow detection device;
the flow detection device is arranged at the output end of the filling pump, and the controller is electrically connected with the flow detection device and the exhaust valve respectively and used for controlling the exhaust valve to be opened when the flow detected by the flow detection device is smaller than or equal to a preset threshold value.
3. A filling system according to claim 2, wherein the predetermined threshold value is zero.
4. A filling system as claimed in any one of claims 1 to 3, further comprising: a safety valve is arranged on the upper portion of the safety valve,
the safety valve is connected between the input end of the filling pump and the output end of the filling pump, and when the pressure difference between the input end of the filling pump and the output end of the filling pump exceeds a preset value, the safety valve is opened to communicate the input end of the filling pump with the output end of the filling pump.
5. A filling system according to any one of claims 1 to 3, wherein a first end of the vent valve is connected to an input of the filling pump; the second end of the exhaust valve is connected to the top end of the liquid storage tank or is an emptying end.
6. A filling system as claimed in any one of claims 1 to 3, further comprising: a pressure gauge is arranged on the base plate,
the pressure gauge is arranged at the output end of the filling pump and used for detecting pressure information of the output end of the filling pump.
7. A filling system as claimed in claim 2 or 3, further comprising: an alarm device is arranged on the base plate,
the alarm is electrically connected with the flow detection device or the controller and used for giving an alarm when the flow detected by the flow detection device is smaller than or equal to the preset threshold value.
8. A filling system according to any of claims 1-3, wherein the filling pump comprises a piston drive for driving the flow of the filling medium by piston movement.
9. The filling system of claim 8, wherein a first one-way valve is connected to the input end of the piston driver, the flow direction of the first one-way valve is toward the piston driver, and a second one-way valve is connected to the output end of the piston driver, the flow direction of the second one-way valve is away from the piston driver.
10. A filling system according to any one of claims 1 to 3, wherein a filter is further provided between the reservoir and the input of the filling pump.
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|---|---|---|---|
| CN201811044773.4A CN110886965B (en) | 2018-09-07 | 2018-09-07 | Filling system |
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|---|---|---|---|
| CN201811044773.4A CN110886965B (en) | 2018-09-07 | 2018-09-07 | Filling system |
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| CN110886965A true CN110886965A (en) | 2020-03-17 |
| CN110886965B CN110886965B (en) | 2021-09-28 |
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| CN110886965B (en) | 2021-09-28 |
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