阅读说明：本技术 加注系统 (Filling system ) 是由 朱昌军 张春生 谭建华 邹凯 徐乐乐 杨刚 付江 韩占方 尹志鹏 薛原 王书国 于 2018-09-07 设计创作，主要内容包括：本发明提供一种加注系统,包括：储液罐和加注泵；所述加注泵的输入端连接于所述储液罐,所述加注泵的输出端用于连接控制阀,所述控制阀用于连接油气管道,所述加注泵用于将所述储液罐内的加注介质注入到所述油气管道内,所述加注介质为易挥发或易汽化的液态介质；其中,所述加注泵的输入端设置有排气阀,所述排气阀用于在所述加注泵不上量时排出所述加注泵输入端的所述加注介质产生的气体。本发明提供的加注系统,消除了加注系统内的加注介质汽化导致的加注泵不上量的问题,可保证加注过程的顺利进行。(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.)

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.

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.