阅读说明：本技术 一种lng洗井清蜡车 (LNG well-flushing paraffin removal vehicle ) 是由 张建华 张海丽 张振 胡小刚 陈德 马潮 张�杰 吴鹏 代州 王薇 徐天赐 王 于 2019-10-23 设计创作，主要内容包括：本发明公开了一种LNG洗井清蜡车,包括底盘车、气瓶组、燃烧器和三缸柱塞泵,气瓶组包括450L气瓶和335L气瓶,底盘车上方设有锅炉和操作柜,锅炉上设有燃烧器,锅炉后侧连接有三缸柱塞泵,水柜通过水质控制系统连接三缸柱塞泵,气瓶组上连接有LNG气路系统,LNG气路系统连接燃烧器,底盘车上连接有传动系统；本发明结构的供气方式不会导致气瓶组压力明显下降,对降低罐内的压力具有显著、重要的作用,在燃烧器的持续运转下气瓶组内压力最终降至气体节约阀的设定压力,且本发明结构简单,能够合理分配利用洗井清蜡车上的空间,整车的通过性、灵活性和安全性高,且能够提供一个安全、自动化程度更高的洗井清蜡车。(The invention discloses an LNG well-flushing paraffin removal vehicle which comprises a chassis vehicle, a gas cylinder group, a combustor and a three-cylinder plunger pump, wherein the gas cylinder group comprises a 450L gas cylinder and a 335L gas cylinder; the gas supply mode of the structure of the invention can not cause the pressure of the gas cylinder group to obviously drop, has obvious and important function on reducing the pressure in the tank, and the pressure in the gas cylinder group is finally reduced to the set pressure of the gas saving valve under the continuous operation of the burner.)

1. The utility model provides a LNG well-flushing paraffin removal car which characterized in that: comprises a chassis truck (1), a gas cylinder group, a burner (4), a water tank (5), a boiler (6), an operation cabinet (7) and a three-cylinder plunger pump (8), wherein the gas cylinder group comprises a 450L gas cylinder (2) and a 335L gas cylinder (3), one side of the chassis truck (1) is provided with the 450L gas cylinder (2), the boiler (6) and the operation cabinet (7) are arranged above the chassis truck (1), the burner (4) is arranged on the boiler (6), the rear side of the boiler (6) is connected with the three-cylinder plunger pump (8), one side of the three-cylinder plunger pump (8) is provided with the water tank (5), the water tank (5) is internally provided with the 335L gas cylinder (3), the 335L gas cylinder (3) and the 450L gas cylinder (2) are connected through a plurality of groups of pipelines, the water tank (5) is connected with the three-cylinder plunger pump (8) through a water quality control system, and the gas cylinder group is connected with an LNG, LNG gas circuit system connection combustor (4), be connected with transmission system (9) on chassis car (1), three jar plunger pumps (8) are connected in transmission system (9), just transmission system (9) are through the main car gearbox of full power takeoff (10) connection chassis car (1).

2. An LNG well-flushing paraffin removal vehicle as claimed in claim 1, characterized in that: the LNG gas circuit system comprises a liquid inlet valve (11), a pressure increasing valve (12), a first check valve (13), a liquid overflowing valve (14), a pressure regulating valve (15), a liquid outlet valve (16), a gas saving valve (17), a liquid inlet (18), a pressure booster (19), a vent (20), a vent valve (21), a main safety valve (22), an auxiliary safety valve (23), a first pressure gauge (24), a liquid level meter (25), a vaporizer (26), a second pressure gauge (27), a pressure stabilizer (28), a buffer tank (29), a second check valve (30), a pressure reducing valve (31) and a third pressure gauge (32), wherein the liquid inlet valve (11) and the liquid inlet (18) are arranged on a pipeline between a 450L gas cylinder (2) and a 335L gas cylinder (3), the pressure increasing valve (12), the first check valve (13), the liquid overflowing valve (14) and the liquid inlet valve (18) are arranged on the 450L gas cylinder, Pressure-regulating valve (15), play liquid valve (16) and gas-saving valve (17), be equipped with booster (19), drain (20), atmospheric valve (21), main relief valve (22), vice relief valve (23) and level gauge (25) on 335L gas cylinder (3), be equipped with first manometer (24) on the pipeline between vice relief valve (23) and level gauge (25), gas cylinder group one side is connected with vaporizer (26), vaporizer (26) one side is equipped with buffer tank (29), be equipped with second manometer (27) and stabiliser (28) on the pipeline of vaporizer (26) and buffer tank (29), combustor (4) is connected in stabiliser (28), be equipped with second check valve (30), relief pressure valve (31) and third manometer (32) on the pipeline of stabiliser (28) and combustor (4).

3. An LNG well-flushing paraffin removal vehicle as claimed in claim 2, characterized in that: the water quality control system comprises a suction pipe system (33), a safety valve (34), a third check valve (35), a high-pressure valve (36), a liquid bag (37), a temperature sensor (38) and a pressure sensor (39), the suction pipe system (33) is arranged on the three-cylinder plunger pump (8), the safety valve (34), the third check valve (35) and the high-pressure valve (36) are arranged on pipelines of the three-cylinder plunger pump (8) and the boiler (6), the boiler (6) is connected with the liquid bag (37), and the temperature sensor (38) and the pressure sensor (39) are arranged on the liquid bag (37).

4. An LNG well-flushing paraffin removal vehicle according to claim 3, characterized in that: the safety valve (34), the main safety valve (22) and the auxiliary safety valve (23) are all spring servo and leakage type valves.

5. An LNG well-flushing paraffin removal vehicle as claimed in claim 2, characterized in that: the gas cylinder group is connected with a vaporizer (26) through a low-temperature pipe, and all pipelines between the vaporizer (26) and the combustor (4) are heat pipes.

6. An LNG well-flushing paraffin removal vehicle according to claim 3, characterized in that: the pipe of the pipeline and the pipe of the suction piping system (33) are both stainless steel pipes or copper pipes, and the connecting pieces on the pipeline and the pipe of the suction piping system (33) are both ferrule type joints.

7. An LNG well-flushing paraffin removal vehicle according to claim 6, characterized in that: the tubing suction piping (33) and connections need to be surface treated with a surfactant prior to installation and then dried.

Technical Field

The invention relates to the field of well flushing equipment, in particular to an LNG well flushing paraffin removal vehicle.

Background

In the process of crude oil exploitation, along with the continuous increase of oil wells, the continuous increase of workload, the change of oil quality and the aging of equipment, wax precipitation becomes more and more serious, the flow of crude oil is hindered, the oil yield of the oil wells is influenced, in addition, the demand of well washing and wax removing equipment is also continuously increased, the cost is also continuously increased, and the existing well washing and wax removing equipment of the oil wells can not meet the requirements of crude oil production more and more;

the number and the functions of the existing equipment on the well-flushing paraffin removal vehicle are increased, on the premise of meeting the technical performance requirements, the reasonable arrangement and the load distribution of the equipment on a platform need to be solved, the installation space is saved to the maximum extent, the trafficability, the flexibility and the safety of the whole vehicle are ensured, the well-flushing paraffin removal vehicle which is safer and has higher automation degree needs to be designed, and the safety of a well head and personal equipment is ensured.

Disclosure of Invention

In order to solve the problems, the invention provides the LNG well-flushing paraffin removal vehicle, the gas supply mode of the structure of the LNG well-flushing paraffin removal vehicle can not cause the pressure of a gas cylinder group to be obviously reduced, the LNG well-flushing paraffin removal vehicle has obvious and important effect on reducing the pressure in a tank, the pressure in the gas cylinder group is finally reduced to the set pressure of a gas saving valve under the continuous operation of a burner, the LNG well-flushing paraffin removal vehicle is simple in structure, the space on the well-flushing paraffin removal vehicle can be reasonably distributed and utilized, the trafficability, flexibility and safety of the whole vehicle are high, and the LNG well-flushing paraffin removal vehicle with higher safety and automation degree can be provided.

The invention provides an LNG well-flushing paraffin removal vehicle, which comprises a chassis vehicle, a gas cylinder group, a burner, a water tank, a boiler, an operation cabinet and a three-cylinder plunger pump, the gas cylinder group comprises a 450L gas cylinder and a 335L gas cylinder, one side of the chassis vehicle is provided with the 450L gas cylinder, a boiler and an operation cabinet are arranged above the chassis vehicle, a burner is arranged on the boiler, a three-cylinder plunger pump is connected with the rear side of the boiler, one side of the three-cylinder plunger pump is provided with a water tank, the inside of the water tank is provided with a 335L gas cylinder 3, the 335L gas cylinder and the 450L gas cylinder are connected through a plurality of groups of pipelines, the water tank is connected with the three-cylinder plunger pump through the water quality control system, the gas cylinder group is connected with an LNG gas circuit system, the LNG gas circuit system is connected with the combustor, the chassis car is connected with a transmission system, the transmission system is connected with the three-cylinder plunger pump, and the transmission system is connected with a main car gearbox of the chassis car through a full-power takeoff.

The further improvement lies in that: the LNG gas circuit system comprises a liquid inlet valve, a pressure increasing valve, a first check valve, a liquid overflow valve, a pressure regulating valve, a liquid outlet valve, a gas saving valve, a liquid inlet, a pressure increasing device, a vent, an emptying valve, a main safety valve, an auxiliary safety valve, a first pressure gauge, a liquid level meter, a vaporizer, a second pressure gauge, a pressure stabilizer, a buffer tank, a second check valve, a pressure reducing valve and a third pressure gauge, wherein the liquid inlet valve and the liquid inlet are arranged on a pipeline between a 450L gas cylinder and a 335L gas cylinder, the pressure increasing valve, the first check valve, the liquid overflow valve, the pressure regulating valve, the liquid outlet valve and the gas saving valve are arranged on the 450L gas cylinder, the pressure increasing device, the vent, the main safety valve, the auxiliary safety valve and the liquid level meter are arranged on the pipeline between the auxiliary safety valve and the liquid level meter, the first pressure gauge is arranged on the pipeline between the auxiliary, the pipeline of vaporizer and buffer tank is equipped with second manometer and stabiliser, the combustor is connected to the stabiliser, be equipped with second check valve, relief pressure valve and third manometer on the pipeline of stabiliser and combustor.

The further improvement lies in that: the water quality control system comprises a suction pipe system, a safety valve, a third check valve, a high-pressure valve, a liquid bag, a temperature sensor and a pressure sensor, the suction pipe system is arranged on the three-cylinder plunger pump, the safety valve, the third check valve and the high-pressure valve are arranged on the three-cylinder plunger pump and a pipeline of the boiler, the liquid bag is connected to the boiler, and the temperature sensor and the pressure sensor are arranged on the liquid bag.

The further improvement lies in that: the safety valve, the main safety valve and the auxiliary safety valve are all spring servo and leakage type valves.

The further improvement lies in that: the gas cylinder group is connected with a vaporizer through a low-temperature pipe, and all pipelines between the vaporizer and the burner are heat pipes.

The further improvement lies in that: the pipe material of the pipeline and the suction pipe system is stainless steel pipe or copper pipe, and the connecting pieces on the pipeline and the suction pipe system are ferrule type joints.

The further improvement lies in that: the tubing suction lines and connectors need to be surface treated with a surfactant prior to installation and then dried.

The invention has the beneficial effects that: the gas saving valve is in a closed state when the working pressure of the gas cylinder group is lower than the set pressure of the gas saving valve, when the burner operates, the pressure in the gas cylinder group only extrudes liquid from the bottom of the gas cylinder group into the vaporizer through the liquid outlet pipe, and the liquid is gasified and heated and then is supplied to the burner in a gas supply mode which can not cause the pressure of the gas cylinder group to obviously drop; when the working pressure of the gas cylinder group is higher than the set pressure of the gas saving valve, the gas saving valve is opened, when the burner operates, the gas-liquid mixed flow is gasified and heated in the vaporizer and then supplied to the engine, the obvious and important effect on reducing the pressure in the tank is achieved, and the pressure in the gas cylinder group is finally reduced to the set pressure of the gas saving valve under the continuous operation of the burner.

Drawings

FIG. 1 is a schematic front view of a well-flushing paraffin removal truck according to the present invention;

FIG. 2 is a schematic structural diagram of an LNG gas circuit system of the present invention;

FIG. 3 is a schematic view of a water quality control system according to the present invention;

FIG. 4 is a schematic diagram of the transmission system of the present invention.

Wherein: 1. a chassis truck; 2. a 450L gas cylinder; 3. a 335L gas cylinder; 4. a burner; 5. a water tank; 6. a boiler; 7. an operation cabinet; 8. a three-cylinder plunger pump; 9. a transmission system; 10. a full power takeoff; 11. a liquid inlet valve; 12. a pressure increasing valve; 13. a first check valve; 14. a liquid flow-through valve; 15. a pressure regulating valve; 16. a liquid outlet valve; 17. a body saver valve; 18. a liquid inlet; 19. a supercharger; 20. a vent port; 21. an atmospheric valve; 22. a main safety valve; 23. a secondary safety valve; 24. a first pressure gauge; 25. a liquid level meter; 26. a melting device; 27. a second pressure gauge; 28. a voltage regulator; 29. a buffer tank; 30. a second check valve; 31. a pressure reducing valve; 32. a third pressure gauge; 33. an intake piping system; 34. a safety valve; 35. a third check valve; 36. a high pressure valve; 37. liquid bags; 38. a temperature sensor; 39. a pressure sensor.

Detailed Description

In order to further understand the present invention, the following detailed description will be made with reference to the following examples, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

According to the drawings of fig. 1, 2, 3 and 4, the embodiment provides an LNG well-flushing paraffin removal truck, which comprises a chassis truck 1, a gas cylinder group, a burner 4, a water tank 5, a boiler 6, an operation cabinet 7 and a three-cylinder plunger pump 8, wherein the gas cylinder group comprises 450L gas cylinders 2 and 335L gas cylinders 3, the 450L gas cylinders 2 are arranged on one side of the chassis truck 1, the boiler 6 and the operation cabinet 7 are arranged above the chassis truck 1, the burner 4 is arranged on the boiler 6, the three-cylinder plunger pump 8 is connected to the rear side of the boiler 6, the water tank 5 is arranged on one side of the three-cylinder plunger pump 8, the 335L gas cylinders 3 are arranged in the water tank 5, the 335L gas cylinders 3 and the 450L 2 are connected through a plurality of pipelines, the water tank 5 is connected with the three-cylinder plunger pump 8 through a water quality control system, the gas cylinder group is connected with a gas cylinder system, the LNG gas cylinder system is connected with the burner 4, the chassis truck 1 is connected with a transmission, the transmission system 9 is connected with the three-cylinder plunger pump 8, and the transmission system 9 is connected with a main vehicle gearbox of the chassis vehicle 1 through a full-power takeoff 10.

The LNG gas circuit system comprises a liquid inlet valve 11, a pressure increasing valve 12, a first check valve 13, a liquid overflow valve 14, a pressure regulating valve 15, a liquid outlet valve 16, a gas saving valve 17, a liquid inlet 18, a pressure increasing device 19, a vent 20, a vent valve 21, a main safety valve 22, an auxiliary safety valve 23, a first pressure gauge 24, a liquid level gauge 25, a vaporizer 26, a second pressure gauge 27, a pressure stabilizer 28, a buffer tank 29, a second check valve 30, a pressure reducing valve 31 and a third pressure gauge 32, wherein the liquid inlet valve 11 and the liquid inlet 18 are arranged on a pipeline between 450L gas cylinders 2 and 335L gas cylinders 3, the pressure increasing valve 12, the first check valve 13, the liquid overflow valve 14, the pressure regulating valve 15, the liquid outlet valve 16 and the gas saving valve 17 are arranged on the 450L gas cylinders 3, the pressure increasing device 19, the vent 20, the vent valve 21, the main safety valve 22, the auxiliary safety valve 23 and the liquid level gauge 25 are arranged on a pipeline between the auxiliary safety valve 23 and the, one side of the gas cylinder group is connected with a vaporizer 26, one side of the vaporizer 26 is provided with a buffer tank 29, a second pressure gauge 27 and a voltage stabilizer 28 are arranged on pipelines of the vaporizer 26 and the buffer tank 29, the voltage stabilizer 28 is connected with the combustor 4, and a second check valve 30, a pressure reducing valve 31 and a third pressure gauge 32 are arranged on pipelines of the voltage stabilizer 28 and the combustor 4.

The water quality control system comprises a suction piping system 33, a safety valve 34, a third check valve 35, a high-pressure valve 36, a liquid bag 37, a temperature sensor 38 and a pressure sensor 39, wherein the suction piping system 33 is arranged on the three-cylinder plunger pump 8, the safety valve 34, the third check valve 35 and the high-pressure valve 36 are arranged on pipelines of the three-cylinder plunger pump 8 and the boiler 6, the boiler 6 is connected with the liquid bag 37, and the temperature sensor 38 and the pressure sensor 39 are arranged on the liquid bag 37.

The safety valve 34, the main safety valve 22 and the auxiliary safety valve 23 are all spring servo and leakage type valves.

The gas cylinder group is connected with a vaporizer 26 through a low-temperature pipe, and all pipelines between the vaporizer 26 and the combustor 4 are heat pipes.

The pipe of the pipeline and the suction pipe system 33 are both stainless steel pipes or copper pipes, and the connecting pieces on the pipeline and the suction pipe system 33 are both ferrule type joints.

The tubing suction piping 33 and connectors need to be surface treated with a surfactant prior to installation and then dried.

By arranging the main safety valve 22, the pressure rise caused by normal heat leakage loss of the heat insulating layer and the support, or the pressure rise caused by accelerated heat leakage after vacuum damage and under the condition of fire can be diffused, and by arranging the auxiliary safety valve 23, the auxiliary safety valve 23 can be started when the main safety valve 22 fails or is blocked, when the working pressure of the gas cylinder group is lower than the set pressure of the gas saving valve 17, the gas saving valve 17 is in a closed state, when the burner 4 operates, the pressure in the gas cylinder group only presses out liquid from the bottom of the gas cylinder group into the vaporizer 26 through the liquid outlet pipe, and the gas supply mode of supplying the liquid to the burner 4 after gasification and temperature rise can not cause the pressure of the gas cylinder group to be obviously reduced; when the working pressure of the gas cylinder group is higher than the set pressure of the gas saving valve 17, the gas saving valve 17 is opened, when the burner 4 operates, the gas-liquid mixed flow is supplied to the engine after the gas-liquid mixed flow is gasified and heated in the vaporizer 26, the obvious and important effect on reducing the pressure in the tank is achieved, and the pressure in the gas cylinder group is finally reduced to the set pressure of the gas saving valve 17 under the continuous operation of the burner 4.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.