Pumping unit wellhead flow path low-pressure steam cleaning device

Abstract

The pumping unit wellhead flow path low-pressure steam cleaning device comprises an insulation box, a water and medicine adding bin is installed in an inner cavity of the insulation box, an electromagnetic heating device is arranged on the outer side of the water and medicine adding bin, and one side of the water and medicine adding bin communicates with a steam generation pipeline; cleaning water and medicine are added into the water and medicine adding bin, the uniformity of the medicine is improved through stirring and mixing of the stirring assembly, then under the condition that the electromagnetic heating device is heated, the cleaning water is evaporated to generate steam with the medicine, meanwhile, the steam is pressurized by the low-pressure steam pressurizing bin, and the low-pressure steam is stabbed and washed to oil dirt devices of the rod-pumped well; and in the secondary process, the constant-temperature and constant-pressure electric control device can control the constant temperature and constant pressure of the water and chemical adding bin and the low-pressure steam pressurizing bin, oil stains on the surfaces of oil stain devices on the rod pumped well are cleaned through the cleaning capacity of steam, the workload of manual cleaning can be reduced, meanwhile, the cleaning speed and quality can be improved, and the well delivery speed can be increased.

Description

Technical Field

[0001] The present invention relates to the technical field of petroleum, and specifically to a low-pressure steam cleaning device for the wellhead process of a pumping unit. Background Art

[0002] The cleaning work of the wellhead oil stains left at the construction site of the oilfield pumping unit well operation, the oil leakage of the Christmas tree and the ground equipment, etc., has increased a great workload for the construction unit and the front-line oil production workers. Although the construction unit uses a boiler truck for cleaning and cooperation in well handover, due to the large workload of well handover and the limited number of boiler trucks, there are inevitably dead corners in the construction oil stain cleaning work, which often causes difficulties in well handover and affects the opening rate of the mechanical oil production well. In addition, some oilfields produce mechanical oil production wells for nearly six months in winter. It is difficult to handle faults such as oil leakage from the wellhead packing and the speed reducer in winter, and it can only rely on the post employees to wipe and clean by hand, which brings inconvenience to the oilfield production. Summary of the Invention

[0003] The purpose of the present invention is to provide a low-pressure steam cleaning device for the wellhead process of a pumping unit. The electromagnetic heating device heats the water and chemical addition tank to generate steam, and then, under the boosting of the low-pressure steam boosting tank, it is introduced from the steam transmission hose and sprayed out by the combined steam spray gun. The low-pressure steam is stabbed and washed to the oil stain components of the pumping unit well under the state of constant temperature and constant pressure, which will shorten the well handover cycle of the pumping unit well, improve the opening rate and production time rate of the oil well, and at the same time reduce the input cost of the boiler truck for cleaning oil stains and shorten the fault handling time of the wellhead packing, speed reducer, etc. of the pumping unit well, so as to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A low-pressure steam cleaning device for the wellhead process of a pumping unit, including an insulating box. An inner cavity of the insulating box is provided with a water and chemical addition tank. An electromagnetic heating device is arranged outside the water and chemical addition tank. One side of the water and chemical addition tank is communicated with a steam generating pipeline. The end of the steam generating pipeline far from the water and chemical addition tank is communicated with a low-pressure steam boosting tank. The low-pressure steam boosting tank is fixed in the inner cavity of the insulating box and fits against the inner side wall of the insulating box. The top of the low-pressure steam boosting tank is communicated with a steam transmission hose. The end of the steam transmission hose far from the low-pressure steam boosting tank penetrates through the insulating box and extends outwards and is provided with a combined steam spray gun. A stirring component is arranged inside the water and chemical addition tank. The top of the water and chemical addition tank is communicated with a water and chemical addition port.

[0005] Preferably, the electromagnetic heating device includes an electric control operation panel. The electric control operation panel is embedded on a side of the insulating box far from the low-pressure steam boosting tank. An electromagnetic coil is wound outside the water and chemical addition tank. Both ends of the electromagnetic coil are electrically connected to the electric control operation panel.

[0006] Preferably, the stirring assembly includes a low-speed motor fixed to the bottom of the inner cavity of the insulation box. A stirring rod is fixed to the output shaft of the low-speed motor. The stirring rod rotates at the bottom of the water and chemical addition tank through a bearing. One end of the stirring rod penetrates into the inner cavity of the water and chemical addition tank and is fixed with a chemical addition stirring impeller.

[0007] Preferably, a constant temperature and constant pressure electric control device electrically connected to the electric control operation panel is fixed in the inner cavity of the insulation box. A constant pressure steam valve is connected to the top of the low-pressure steam boosting chamber. The constant pressure steam valve is electrically connected to the constant temperature and constant pressure electric control device.

[0008] Preferably, a box door is hinged to the top of the insulation box through a hinge. A sealing plug is fixed to the bottom of the box door. The bottom of the sealing plug extends downward and penetrates into the inner cavity of the water and chemical addition port. A through hole is opened on one side of the top of the box door. The top of the constant pressure steam valve penetrates through the through hole and extends upward.

[0009] Preferably, a steam check valve is installed on the top of the low-pressure steam boosting chamber. One end of the steam transmission hose away from the combined steam spray gun is communicated with one end of the steam check valve.

[0010] Preferably, a heat preservation and flame retardant layer is arranged in the inner cavity of the low-pressure steam boosting chamber. A heat insulation protective sleeve is sleeved outside the water and chemical addition tank. The electromagnetic coil is embedded inside the heat insulation protective sleeve.

[0011] Preferably, the water and chemical addition tank is arranged in a cuboid shape. The electromagnetic coil is spiral and located at the lower end outside the water and chemical addition tank.

[0012] Preferably, a handle is installed on the top of the box door. The handle rotates through a hinge and is located outside the insulation box.

[0013] Preferably, it further includes four groups of universal wheels fixed to the bottom of the insulation box. A push rod is fixed to the outside of the insulation box. The push rod is located above the electric control operation panel.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, cleaning water and chemicals are added into the water and chemical addition tank. Through the stirring and mixing of the stirring assembly, the uniformity of the chemicals is improved. Subsequently, under the heating of the electromagnetic heating device, the cleaning water evaporates to generate steam with chemicals. At the same time, the steam is boosted by the low-pressure steam boosting chamber, and the low-pressure steam is sprayed to clean the oil-stained parts of the pumping well. During this process, the constant temperature and constant pressure electric control device can control the constant temperature and constant pressure of the water and chemical addition tank and the low-pressure steam boosting chamber. The oil stains on the surface of the oil-stained parts of the pumping well can be cleaned by using the cleaning ability of the steam, which can reduce the workload of manual cleaning, improve the cleaning speed and quality, and accelerate the well handover speed.

[0015] By setting the position and shape of the electromagnetic coil, the present invention facilitates placing the electromagnetic coil at the lower end of the water and chemical addition tank, thereby facilitating the heating treatment of the cleaning water in the water and chemical addition tank at all times. When the electromagnetic coil is located at the upper end, as the amount of cleaning water decreases, it is impossible to effectively and quickly heat the cleaning water, prolonging the time for steam formation and resulting in a reduction in cleaning efficiency. At the same time, the spiral electromagnetic coil can comprehensively heat the water and chemical addition tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention; Figure 2 is a sectional three-dimensional structural schematic diagram of the insulating box of the present invention; Figure 3 is a structural schematic diagram of the water and chemical addition tank of the present invention; Figure 4 is a sectional three-dimensional structural schematic diagram of the water and chemical addition tank of the present invention; Figure 5 is a three-dimensional structural schematic diagram of the low-pressure steam boosting tank of the present invention.

[0017] Reference numerals in the figures: 1, insulating box; 2, water and chemical addition tank; 3, electromagnetic heating device; 31, electric control operation panel; 32, electromagnetic coil; 4, steam generation pipeline; 5, low-pressure steam boosting tank; 6, steam transmission hose; 7, combined steam spray gun; 8, stirring assembly; 81, low-speed motor; 82, stirring rod; 83, chemical addition stirring impeller; 9, water and chemical addition port; 10, constant temperature and constant pressure electric control device; 11, constant pressure steam valve; 12, box door; 13, sealing plug; 14, through hole; 15, steam check valve; 16, heat insulation protective sleeve; 17, handle; 18, universal wheel; 19, push rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] The present invention provides as Figures 1 to 5The low-pressure steam cleaning device for the pumping unit wellhead process shown in the figure includes an insulating box 1. Inside the cavity of the insulating box 1, a water and chemical adding bin 2 is installed. On the outside of the water and chemical adding bin 2, an electromagnetic heating device 3 is arranged. One side of the water and chemical adding bin 2 is connected to a steam generating pipeline 4. The end of the steam generating pipeline 4 far away from the water and chemical adding bin 2 is connected to a low-pressure steam boosting bin 5. The low-pressure steam boosting bin 5 is fixed inside the insulating box 1 and fits against the side wall inside the insulating box 1. The top of the low-pressure steam boosting bin 5 is connected to a steam transmission hose 6. The end of the steam transmission hose 6 far away from the low-pressure steam boosting bin 5 extends out through the insulating box 1 and is installed with a combined steam spray gun 7. Inside the water and chemical adding bin 2, a stirring assembly 8 is arranged. The top of the water and chemical adding bin 2 is connected to a water and chemical adding port 9; By adding cleaning water and chemicals into the water and chemical adding bin 2, through the stirring and mixing of the stirring assembly 8, the uniformity of the chemicals is improved. Subsequently, under the heating of the electromagnetic heating device 3, the cleaning water evaporates to generate steam with chemicals. At the same time, the steam is boosted by the low-pressure steam boosting bin 5, and the low-pressure steam is used to wash the oil-stained parts of the pumping unit well. During this process, the constant temperature and constant pressure electronic control device 10 can control the constant temperature and constant pressure of the water and chemical adding bin 2 and the low-pressure steam boosting bin 5. Using the cleaning ability of the steam, the oil stains on the surface of the oil-stained parts of the pumping unit well can be cleaned, which can reduce the workload of manual cleaning, and at the same time can improve the cleaning speed and quality, and speed up the well handover speed.

[0020] The electromagnetic heating device 3 includes an electric control operation panel 31. The electric control operation panel 31 is embedded on the side of the insulating box 1 far away from the low-pressure steam boosting bin 5. An electromagnetic coil 32 is wound around the outside of the water and chemical adding bin 2. Both ends of the electromagnetic coil 32 are electrically connected to the electric control operation panel 31. At the same time, the water and chemical adding bin 2 is made of metal. Through the electric control operation panel 31, the heating temperature of the electromagnetic coil 32 can be controlled. Then, by energizing the electromagnetic coil 32 to generate a magnetic field, the metal water and chemical adding bin 2 is quickly heated up. Applying the principle of steam generation of an electromagnetic boiler, the steam generation speed is fast, the water consumption is low, the volume is small, and it is convenient to carry, so that the steam can be obtained immediately. At the same time, the hot steam can improve the cleaning efficiency of the oil stains.

[0021] The stirring assembly 8 includes a low-speed motor 81 fixed to the bottom of the inner cavity of the insulation box 1. A stirring rod 82 is fixed to the output shaft of the low-speed motor 81. The stirring rod 82 rotates at the bottom of the water and chemical addition tank 2 through a bearing. One end of the stirring rod 82 penetrates into the inner cavity of the water and chemical addition tank 2 and is fixed with a chemical addition stirring impeller 83. With the cooperation of the low-speed motor 81, the stirring rod 82 is driven to rotate, and then the stirring rod 82 drives the chemical addition stirring impeller 83 to rotate. This can not only mix the added chemicals and cleaning water, making the chemicals more evenly distributed in the water and chemical addition tank 2, but also drive the flow of the cleaning water when the electromagnetic heating device 3 heats the water and chemical addition tank 2, enabling the heat to be quickly absorbed by the cleaning water and generating steam, ensuring that the cleaning water in the water and chemical addition tank 2 is evenly heated, facilitating the rapid generation of hot steam, achieving the purpose of being ready to use immediately and shortening the time for steam generation.

[0022] A constant temperature and constant pressure electric control device 10 electrically connected to the electric control operation panel 31 is fixed in the inner cavity of the insulation box 1. A constant pressure steam valve 11 is connected to the top of the low-pressure steam booster chamber 5. The constant pressure steam valve 11 is electrically connected to the constant temperature and constant pressure electric control device 10. The electromagnetic coil 32 and the constant pressure steam valve 11 are controlled by the constant temperature and constant pressure device through an electric circuit to ensure the temperature in the water and chemical addition tank 2 and the pressure in the low-pressure steam booster chamber 5. When the combined steam spray gun 7 is opened, constant temperature and constant pressure hot steam can be obtained, which, combined with the chemicals, enhances the cleaning effect on oil stains. When the pressure in the low-pressure steam booster chamber 5 is higher than the predetermined value, the constant pressure steam valve 11 can act as a pressure relief valve to ensure that the steam in the low-pressure steam booster chamber 5 is in a constant pressure state.

[0023] A box door 12 is hinged to the top of the insulation box 1 through a hinge. A sealing plug 13 is fixed to the bottom of the box door 12. The bottom of the sealing plug 13 extends downward and penetrates into the inner cavity of the water and chemical addition port 9. A through hole 14 is opened on one side of the top of the box door 12. The top of the constant pressure steam valve 11 penetrates through the through hole 14 and extends upward. The hinged box door 12 facilitates the maintenance of the equipment in the insulation box 1. When the box door 12 is closed, the sealing plug 13 can block the water and chemical addition port 9, preventing the steam generated after the cleaning water in the water and chemical addition tank 2 is heated from leaking out through the water and chemical addition port 9. At the same time, after the box door 12 is opened, water and chemicals can be directly added to the water and chemical addition tank 2 through the water and chemical addition port 9, and the through hole 14 on the box door 12 facilitates the penetration of the constant pressure steam valve 11, preventing the steam discharged from the constant pressure steam valve 11 from entering the insulation box 1, which may increase the humidity in the insulation box 1 and cause circuit failures.

[0024] A steam check valve 15 is installed at the top of the low-pressure steam boosting chamber 5. One end of the steam transmission hose 6 far from the combined steam spray gun 7 is communicated with one end of the steam check valve 15. By installing the steam check valve 15 between the low-pressure steam boosting chamber 5 and the steam transmission hose 6, it is convenient for steam to be transported outward through the steam check valve 15, and to prevent the outside from being communicated with the low-pressure steam boosting chamber 5 through the steam transmission hose 6, thus ensuring the sealing performance of the steam transmission hose 6 during the non-working time of the combined steam spray gun 7.

[0025] A heat-insulating and flame-retardant layer is arranged in the inner cavity of the low-pressure steam boosting chamber 5, and a heat-insulating protective sleeve 16 is sleeved outside the water and chemical adding chamber 2. The electromagnetic coil 32 is embedded inside the heat-insulating protective sleeve 16. By arranging the heat-insulating and flame-retardant layer on the inner wall of the low-pressure steam boosting chamber 5, the heat-insulating and flame-retardant ability of the low-pressure steam boosting chamber 5 is improved, so as to prevent the heat from quickly cooling down in the low-pressure steam boosting chamber 5, resulting in the steam sprayed from the combined steam spray gun 7 not reaching the predetermined temperature and reducing the efficiency of steam cleaning oil stains. At the same time, it ensures that the temperature in the low-pressure steam boosting chamber 5 remains constant.

[0026] The water and chemical adding chamber 2 is arranged in a cuboid shape, and the electromagnetic coil 32 is in a spiral shape at the lower end outside the water and chemical adding chamber 2. By limiting the shape of the water and chemical adding chamber 2, the volume of the water and chemical adding chamber 2 can be maximally increased in the insulating box 1, effectively utilizing the space inside the insulating box 1, increasing the interval time for adding cleaning water and chemicals, and obtaining higher cleaning efficiency within a limited time.

[0027] A handle 17 is installed at the top of the box door 12. The handle 17 rotates through a hinge and is located outside the insulating box 1. By installing the handle 17 outside the box door 12, it is convenient to close and open the box door 12, preventing the operator's hand from being pinched during the operation. At the same time, by limiting the position after the handle 17 rotates, it is avoided that after the box door 12 is opened, the handle 17 is located between the insulating box 1 and the box door 12, which is likely to cause collision and make noise.

[0028] It also includes four groups of universal wheels 18 fixed at the bottom of the insulating box 1, and a push rod 19 is fixed outside the insulating box 1. The push rod 19 is located above the electric control operation panel 31. By setting the universal wheels 18, the flexibility of the insulating box 1 is improved. Cooperating with the push rod 19, it is convenient to move the device to a designated position, shortening the time when cleaning and transferring the oil-stained parts of the pumping well.

[0029] During specific use, open the cabinet door 12 through the handle 17. The sealing plug 13 on the cabinet door 12 is separated from the water and chemical adding port 9. Then, add cleaning water and chemicals into the water and chemical adding bin 2 through the water and chemical adding port 9. Then, set the temperature and pressure in the water and chemical adding bin 2 and the low-pressure steam boosting bin 5 through the electric control operation panel 31. The electric control operation panel 31 controls the start of the low-speed motor 81 to rotate. Subsequently, the low-speed motor 81 drives the stirring rod 82 to rotate, and the stirring rod 82 drives the chemical adding stirring impeller 83 to rotate and mix the cleaning water and chemicals. Then, the electric control operation panel 31 energizes the electromagnetic coil 32. After the electromagnetic coil 32 is energized, a magnetic field is generated around it. Apply the electromagnetic boiler steam generation principle to heat the water and chemical adding bin 2. Under the stirring of the chemical adding stirring impeller 83, the cleaning water quickly absorbs the heat in the water and chemical adding bin 2 and forms steam. The generated steam is introduced into the low-pressure steam boosting bin 5 through the steam generation pipeline 4 and the air pressure is increased by the low-pressure steam boosting bin 5. When the pressure value in the low-pressure steam boosting bin 5 is greater than the electric control operation panel 31, the constant temperature and constant pressure electric control device 10 reversely controls the electric control operation panel 31 to reduce the pressure and temperature, and at the same time opens the constant pressure steam valve 11 to release the excess steam, so as to keep the pressure constant in the low-pressure steam boosting bin 5. Subsequently, the user takes the combined steam spray gun 7 and opens it, and the steam is discharged from the steam transmission hose 6 through the steam check valve 15. Subsequently, the air pressure in the low-pressure steam boosting bin 5 becomes lower, and then the constant temperature and constant pressure electric control device 10 starts the electromagnetic heating device 3 and the low-pressure steam boosting bin 5 to work through the electric control operation panel 31 to ensure the constant temperature and constant pressure of the steam.

[0030] The circuit control scope involved above belongs to the prior art and is controlled by a circuit board and a control chip, which will not be described in detail in this patent.

[0031] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Low-pressure steam cleaning device for pumping unit wellhead process, including an insulating box (1), characterized in that: The inner cavity of the insulating box (1) is equipped with a water and medicine adding bin (2). An electromagnetic heating device (3) is arranged on the outer side of the water and medicine adding bin (2). One side of the water and medicine adding bin (2) is communicated with a steam generating pipeline (4). The end of the steam generating pipeline (4) far from the water and medicine adding bin (2) is communicated with a low-pressure steam boosting bin (5). The low-pressure steam boosting bin (5) is fixed in the inner cavity of the insulating box (1) and fits against the inner side wall of the insulating box (1). The top of the low-pressure steam boosting bin (5) is communicated with a steam transmission hose (6). The end of the steam transmission hose (6) far from the low-pressure steam boosting bin (5) penetrates through the insulating box (1) and extends outward and is equipped with a combined steam spray gun (7). A stirring assembly (8) is arranged inside the water and medicine adding bin (2). The top of the water and medicine adding bin (2) is communicated with a water and medicine adding port (9).

2. The low-pressure steam cleaning device for the pumping unit wellhead process according to claim 1, wherein: The electromagnetic heating device (3) includes an electric control operation panel (31). The electric control operation panel (31) is embedded on one side of the insulating box (1) far from the low-pressure steam boosting bin (5). An electromagnetic coil (32) is wound around the outer side of the water and medicine adding bin (2). Both ends of the electromagnetic coil (32) are electrically connected to the electric control operation panel (31).

3. The low-pressure steam cleaning device for the pumping unit wellhead process according to claim 1, characterized in that: The stirring assembly (8) includes a low-speed motor (81) fixed to the bottom of the inner cavity of the insulating box (1). A stirring rod (82) is fixed to the output shaft of the low-speed motor (81). The stirring rod (82) rotates through a bearing at the bottom of the water and medicine adding bin (2). One end of the stirring rod (82) penetrates into the inner cavity of the water and medicine adding bin (2) and is fixed with a medicine adding stirring impeller (83).

4. The low-pressure steam cleaning device for the pumping unit wellhead process according to claim 1, characterized in that: A constant temperature and constant pressure electric control device (10) electrically connected to the electric control operation panel (31) is fixed in the inner cavity of the insulating box (1). A constant pressure steam valve (11) is communicated with the top of the low-pressure steam boosting bin (5). The constant pressure steam valve (11) is electrically connected to the constant temperature and constant pressure electric control device (10).

5. The low-pressure steam cleaning device for the pumping unit wellhead process according to claim 4, characterized in that: The top of the insulating box (1) is hinged with a box door (12) through a hinge. A sealing plug (13) is fixed to the bottom of the box door (12). The bottom of the sealing plug (13) extends downward and penetrates into the inner cavity of the water and medicine adding port (9). A through hole (14) is opened on one side of the top of the box door (12). The top of the constant pressure steam valve (11) penetrates through the through hole (14) and extends upward.

6. The low-pressure steam cleaning device for the pumping unit wellhead process according to claim 1, characterized in that: A steam check valve (15) is installed on the top of the low-pressure steam boosting bin (5). One end of the steam transmission hose (6) far from the combined steam spray gun (7) is communicated with one end of the steam check valve (15).

7. The low-pressure steam cleaning device for the pumping unit wellhead process according to claim 2, wherein: A heat preservation and flame retardant layer is arranged in the inner cavity of the low-pressure steam boosting bin (5). A heat insulation protective sleeve (16) is sleeved on the outer side of the water and medicine adding bin (2). The electromagnetic coil (32) is embedded inside the heat insulation protective sleeve (16).

8. The low-pressure steam cleaning device for the pumping unit wellhead process according to claim 2, characterized in that: The water and medicine adding bin (2) is arranged in a cuboid shape. The electromagnetic coil (32) is in a spiral shape at the lower end of the outer side of the water and medicine adding bin (2).

9. The low-pressure steam cleaning device for the pumping unit wellhead process according to claim 5, wherein: A handle (17) is installed at the top of the box door (12), and the handle (17) is rotated through a hinge to be located outside the insulating box (1).

10. The low-pressure steam cleaning device for the pumping unit wellhead process according to claim 1, characterized in that: It further includes four groups of universal wheels (18) fixed to the bottom of the insulating box (1), a push rod (19) is fixed to the outside of the insulating box (1), and the push rod (19) is located above the electric control operation panel (31).

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