Oilfield steam injection boiler tail shifter

Abstract

The present application provides an oilfield steam injection boiler tail shifting device, which comprises a load-bearing hydraulic leg, a horizontal shifting hydraulic cylinder and a translation sliding rail. The load-bearing hydraulic leg is installed inside the boiler tail beam channel steel, the horizontal shifting hydraulic cylinder and the translation sliding rail are installed below the load-bearing hydraulic leg for lateral translation. The oilfield steam injection boiler tail shifting device realizes safe and rapid lateral shifting of the boiler tail in a curve or narrow section, self-adjusts the vehicle posture, improves the site adaptability during the relocation of the steam injection boiler, and improves the work efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oilfield steam injection boiler, in particular to an oilfield steam injection boiler tail shifting device. BACKGROUND

[0002] At present, the application of mobile steam injection boiler in oilfield is more and more extensive. In order to meet the demand of steam injection well displacement, the mobile steam injection boiler is designed as a large trailer structure with a length of about 16-18 meters and a width of 3 meters. However, the terrain of heavy oil thermal recovery site is often complex, and the boiler cannot pass through the curve and narrow road section during relocation due to the long wheelbase. Because the tail of the boiler has no self-shifting function to adjust the posture of the vehicle body, the crane and the flat push are currently mainly used for rescue and transportation. However, the use of crane and flat push needs to consider the construction environment and on-site safety factors, and the lifting belongs to direct operation link construction, which itself has certain risks.

[0003] The steam injection well fields in the oilfield are distributed in the farmland in a point form, and the well access roads are often complex and long with soil and stone paving. Road improvement and optimization need to invest a lot of manpower and material resources, and the poor road conditions are difficult to change in a short time. Therefore, it is urgent to develop a boiler tail shifting technology, and it is necessary to provide a safer boiler tail shifting device to solve the poor passability of the mobile steam injection boiler.

[0004] In the Chinese patent application with the application number CN201020672639.1, a movable steam injection boiler is involved. The cooling chamber of the steam injection boiler is between the radiation section and the convection section, the burner is arranged on the radiation section, the burner and the blower are connected through the air duct, the convection section is arranged above the cooling chamber, the chimney is at the outlet end of the convection section, the fuel vapor heater adopts an L-shaped serpentine reciprocating structure, and a single or multiple tube bundles are arranged in the cooling chamber.

[0005] In the Chinese patent application with the application number CN98251519.7, a steam boiler carrier is involved. The carrier mainly comprises a carrier body, the carrier body is composed of a cover body welded on a table plate, a door body is pivotally arranged on the cover body, a rotatable rotating body is arranged on the bottom surface of the table plate, a towing handle with a pull handle is pivotally arranged at one end of the table plate, the steam boiler is fixed on the table plate in the cover body through the fixed ears at the corners of the steam boiler, so that the steam boiler is fixed on the carrier body.

[0006] The oil field mobile vehicle-mounted boiler of the Chinese patent application No. CN202020276304.1 is composed of a traction device, a boiler body, a boiler shell, a burner, a fuel pipe, a pump water inlet pipe, a plunger pump, a medium flow meter, a temperature transmitter, an ultrasonic liquid level meter, and a trailer. The boiler body is provided with a water inlet on one side of the upper end and a water outlet on the other side of the bottom. A cavity is formed between the outer wall of the boiler body and the inner wall of the heat preservation bladder. The outer surface of the heat preservation bladder is fixed with the boiler shell. The wave-shaped furnace is installed in the boiler body. One end of the wave-shaped furnace is connected with the burner outside the boiler shell. The other end is sequentially connected with a smoke box, a threaded smoke pipe, and a chimney. The pump water inlet pipe is provided at the water outlet of the bottom of the boiler body. One end of the pump water inlet pipe is connected with the plunger pump outside the boiler shell, and the other end extends into the boiler body.

[0007] The above prior art is quite different from the present application and cannot solve the technical problems we want to solve. Therefore, we have invented a new oil field steam injection boiler tail shifting device. SUMMARY

[0008] The purpose of the present application is to provide an oil field steam injection boiler tail shifting device that improves the passability of the boiler in complex road sections.

[0009] The purpose of the present application can be achieved by the following technical measures: the oil field steam injection boiler tail shifting device includes two load-bearing hydraulic legs, a horizontal shifting hydraulic cylinder, and a translation sliding rail. The two load-bearing hydraulic legs are installed inside the boiler tail beam channel steel, the horizontal shifting hydraulic cylinder and the translation sliding rail are installed below the load-bearing hydraulic legs for lateral translation.

[0010] The oil field steam injection boiler tail shifting device further includes a high-strength support base. The lower end of the two load-bearing hydraulic legs is connected with the high-strength support base using a universal ball head.

[0011] The translation sliding rail includes a fixed end and a sliding track. The fixed end is located above the sliding track and provides a bolt fixing point for various components above. The sliding track is located at the bottom. The fixed end and the sliding track are connected using an interference fit concave-convex groove structure.

[0012] The fixed end is a groove structure, and the sliding track is a convex groove structure. The convex groove part of the sliding track is inserted into the groove structure of the fixed end to realize the relative sliding of the sliding track in the fixed end.

[0013] The sliding track is 3 meters long.

[0014] The high-strength support base is connected with the fixed end using a bolt.

[0015] The oilfield steam injection boiler tail part shifting device further comprises a horizontal shifting hydraulic cylinder, a sliding track and a high-strength supporting base.

[0016] The horizontal shifting hydraulic cylinder is a bidirectional horizontal shifting hydraulic cylinder.

[0017] The oilfield steam injection boiler tail part shifting device further comprises a hydraulic control system, which comprises a hydraulic connector, a hydraulic pipe bundle and a manual control valve.

[0018] The oilfield steam injection boiler tail part shifting device in the application can realize safe and rapid transverse shifting of the boiler tail part in a curve or a narrow road section, automatically adjust the posture of the vehicle body, improve the site adaptability during the relocation of the steam injection boiler and improve the work efficiency.

[0019] 1. The device uses hydraulic pressure as the driving force according to the current situation that the steam injection boiler is provided with hydraulic legs.

[0020] 2. The device uses mature hydraulic cylinders and sliding tracks as action units, has high reliability and requires less maintenance work.

[0021] 3. The device has two use modes, i.e., a static supporting leg of the boiler trailer and a horizontal dynamic shifting device of the boiler tail part.

[0022] 4. The supporting hydraulic legs are arranged inside the tail part groove beam of the vehicle body, which greatly reduces the distance between the supporting legs without sacrificing the supporting stability.

[0023] 5. The load-bearing hydraulic leg is connected with the sliding rail by a universal ball head, and two-point movable support is formed at the tail of the boiler, which can adapt to the road surface with a height difference of 100mm.

[0024] 6. The device uses bidirectional horizontal displacement hydraulic cylinders and high-strength support bases to solve the contradiction between the displacement of the support leg and the effective working distance of the displacement hydraulic cylinder, improve the reliability and integration of the device, and reduce the maintenance workload in the later period.

[0025] 7. The device uses horizontal displacement hydraulic cylinders with an effective stroke of 700mm, and the effective displacement distance of the device is 0.7m. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural diagram of a specific embodiment of the oil field steam injection boiler tail displacement device. DETAILED DESCRIPTION

[0027] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0028] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation and / or combination thereof.

[0029] The oil field steam injection boiler tail displacement device comprises a load-bearing hydraulic leg, a horizontal displacement hydraulic cylinder, a high-strength support base, a translation sliding rail and a hydraulic control system. The load-bearing hydraulic leg is installed on the tail beam of the boiler chassis. The horizontal displacement hydraulic cylinder for lateral translation and the translation sliding rail are installed below the load-bearing hydraulic leg, and the connection is detachable. The sliding rail of the translation sliding rail is about 3m long.

[0030] The load-bearing hydraulic leg is connected to the fixed seat installed vertically inside the groove steel of the tail beam of the boiler by bolts. Under the premise of ensuring the stability of the support, the effective working distance of the horizontal sliding rail is indirectly improved due to the inward movement of the support point, and the working efficiency of the device is improved.

[0031] The horizontal displacement hydraulic cylinder is a bidirectional horizontal displacement hydraulic cylinder. Under the premise of meeting the bidirectional thrust, the reliability and integration of the device are improved, and the maintenance workload in the later period is reduced. The hydraulic rod of the horizontal displacement hydraulic cylinder is connected to the translation action end by a shaft pin, and the translation action end is welded to one end of the sliding rail of the translation sliding rail.

[0032] A high-strength support base is used. The base adopts a hollow design, and a horizontal displacement hydraulic cylinder acts in the cavity of the base to force the translation action end welded on the sliding rail, thereby driving the sliding rail to move as a whole. The contradiction between the installation spacing of the two support legs and the effective working distance of the displacement hydraulic cylinder is solved, and the reliability of the device is further improved.

[0033] The lower end of the load-bearing hydraulic leg is connected with the high-strength support base through a ball head. The high-strength support base is divided into an upper circular support disc and a lower square support base, and the two parts are connected through bolts. The high-strength support base is connected with the fixed end of the translation sliding rail through bolts. The translation sliding rail is divided into a fixed end and a sliding rail. The fixed end is located above the sliding rail and provides a bolt fixing point for various components above. The sliding rail is located at the bottom, and the fixed end and the sliding rail are connected through a concave-convex groove structure with an interference fit. Specifically, the fixed end is a concave groove structure, and the sliding rail is a convex groove structure. The convex groove part of the sliding rail is inserted into the concave groove structure of the fixed end, so that the sliding rail can slide in the fixed end.

[0034] All the connection parts of the device are connected through bolts, which are easy to disassemble and maintain. The fixed end of the translation sliding rail and the sliding rail are connected through a concave-convex groove with an interference fit, which can be disassembled. The sliding rail is 3 meters long.

[0035] The load-bearing hydraulic leg and the sliding rail are connected through a universal ball head. The use of the universal ball head forms two movable supports at the tail of the boiler, which can realize self-leveling on a road surface with a height difference of 100mm, and further improves the convenience and road adaptability of the device.

[0036] The hydraulic control system is composed of a hydraulic connector, a hydraulic pipe bundle, and a manual control valve.

[0037] The hydraulic connector is fixed on the circular opening of the channel steel at the head of the boiler. One end is connected with the output pipe of the trailer hydraulic pump, and the other end is connected with the hydraulic pipe bundle.

[0038] When working, the hydraulic pipe bundle is filled with hydraulic oil, and the power is provided by the hydraulic pump at the head of the trailer.

[0039] The manual control valve is installed in the middle of the outer side of the cross beam channel steel at the tail of the boiler. The hydraulic oil is connected with the inlet of the manual control valve through the hydraulic connector and the hydraulic pipe bundle. The outlet of the manual control valve is connected with two load-bearing hydraulic legs and one bidirectional horizontal displacement hydraulic cylinder. The operation of the hydraulic cylinder is realized by controlling the flow of hydraulic oil in the pipeline.

[0040] When operating, the worker stands in the middle of the tail of the boiler to operate the hydraulic control valve to control the displacement device. The displacement range and lifting height can be adjusted in real time according to the actual situation on site.

[0041] The following are several specific embodiments of the application.

[0042] Embodiment 1

[0043] The present river H02 furnace relocation encounters a sharp bend and needs to be moved at the tail, and the moving distance is 0.3-0.6 meters; the total weight of the boiler is 70 tons, and the flat weight of the boiler tail is 35-40 tons.

[0044] In the application of a specific embodiment 1 of the present application, as shown in Figure 1 , it is a structural diagram of the tail moving device of the oilfield steam injection boiler of the present application. Figure 1 The load-bearing hydraulic leg (2) is installed on the inner side of the channel steel (1) and adopts a double-acting hydraulic cylinder. The lower end of the load-bearing hydraulic leg (2) is connected with the high-strength support base (4) through a ball head. The high-strength support base (4) is connected with the fixed end of the translation sliding rail (3) through bolts. The cylinder body part of the bidirectional horizontal moving hydraulic cylinder (5) is connected with the fixed end of the translation sliding rail (3) through bolts. The hydraulic rod of the bidirectional horizontal moving hydraulic cylinder (5) is connected with the translation action end (6) through a shaft pin. The translation action end (6) is welded on the sliding track of the translation sliding rail (3).

[0045] When in use, the sleeper (7) is placed directly below the translation sliding rail (3), the load-bearing hydraulic leg (2) is elongated by operating the control system, the translation sliding rail (3) is lowered to contact the surface of the sleeper (7), and the load-bearing hydraulic leg (2) is continuously elongated to lift the boiler tail off the ground. The sliding track of the translation sliding rail (3) is moved by controlling the bidirectional horizontal moving hydraulic cylinder (5), and the single moving distance is controlled to be 0.3-0.6 meters to complete the tail moving operation.

[0046] Embodiment 2

[0047] The present river H02 furnace relocation encounters a 90° bend and needs to be moved at the tail, and the moving distance is 1.0-1.5 meters; the total weight of the boiler is 70 tons, and the flat weight of the boiler tail is 35-40 tons.

[0048] In the application of a specific embodiment 1 of the present application, as shown in

[0049] , it is a structural diagram of the tail moving device of the oilfield steam injection boiler of the present application. Figure 1 Figure 1

[0050] ​​The load-bearing hydraulic leg (2) is installed on the inner side of the channel steel (1) and adopts a double-acting hydraulic cylinder; the lower end of the load-bearing hydraulic leg (2) is connected with the high-strength support base (4) through a ball head; the high-strength support base (4) is connected with the fixed end of the translation slide rail (3) through bolts; the cylinder body part of the bidirectional horizontal displacement hydraulic cylinder (5) is connected with the fixed end of the translation slide rail (3) through bolts; the hydraulic rod of the bidirectional horizontal displacement hydraulic cylinder (5) is connected with the translation action end (6) through a shaft pin; and the translation action end (6) is welded on the sliding track of the translation slide rail (3).

[0051] During use, the sleeper (7) is placed directly below the translation slide rail (3), the load-bearing hydraulic leg (2) is elongated by operating the control system, the translation slide rail (3) is lowered to contact the surface of the sleeper (7), the load-bearing hydraulic leg (2) is continuously elongated to lift the boiler tail and make the wheels leave the ground. The sliding track of the translation slide rail (3) is moved by operating the control system and driving the bidirectional horizontal displacement hydraulic cylinder (5), and after the single displacement distance reaches the displacement limit of 0.7 meters, the above operation is repeated until the displacement distance of the boiler tail meets the field requirement.

[0052] Embodiment 3

[0053] The present river H02 furnace relocation equipment needs to be placed statically on site, the whole boiler weighs 70 tons, and the boiler tail flatly weighs 35-40 tons.

[0054] In a specific embodiment 3 of the present application, as shown in Figure 1 , the structure diagram of the oilfield steam injection boiler tail displacement device of the present application is shown in Figure 1 .

[0055] The load-bearing hydraulic leg (2) is installed on the inner side of the channel steel (1) and adopts a double-acting hydraulic cylinder; the lower end of the load-bearing hydraulic leg (2) is connected with the high-strength support base (4) through a ball head; the high-strength support base (4) is connected with the fixed end of the translation slide rail (3) through bolts; the cylinder body part of the bidirectional horizontal displacement hydraulic cylinder (5) is connected with the fixed end of the translation slide rail (3) through bolts; the hydraulic rod of the bidirectional horizontal displacement hydraulic cylinder (5) is connected with the translation action end (6) through a shaft pin; and the translation action end (6) is welded on the sliding track of the translation slide rail (3).

[0056] During use, the sleeper (7) is placed directly below the translation slide rail (3), the load-bearing hydraulic leg (2) is elongated by operating the control system, the translation slide rail (3) is lowered to contact the surface of the sleeper (7), the load-bearing hydraulic leg (2) is continuously elongated to lift the boiler tail and make the wheels leave the ground. The sliding track of the translation slide rail (3) is moved by operating the control system and driving the bidirectional horizontal displacement hydraulic cylinder (5), and after the single displacement distance reaches the displacement limit of 0.7 meters, the above operation is repeated until the displacement distance of the boiler tail meets the field requirement.

[0057] The application uses a hydraulic walking device to realize autonomous displacement of a boiler tail, which can effectively improve the passability of the steam injection boiler on a complex road section.

[0058] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for the purpose of limiting the present application, although the foregoing detailed description of the application is made with reference to the foregoing examples, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included within the scope of the present application.

[0059] In addition to the technical features described in the specification, they are known to those skilled in the art.

Claims

1. A tail shift device for an oilfield steam injection boiler, characterized in that, The oilfield steam injection boiler tail moving device includes two load-bearing hydraulic legs, a horizontal moving hydraulic cylinder and a translation slide rail, the two load-bearing hydraulic legs are installed inside the boiler tail beam channel steel, the horizontal moving hydraulic cylinder and the translation slide rail for lateral translation are installed below the load-bearing hydraulic legs; The oilfield steam injection boiler tail moving device also includes a high-strength support base, the lower end of the two load-bearing hydraulic legs is connected with the high-strength support base through a universal ball head; The translation slide rail includes a fixed end and a sliding track, the fixed end is above the sliding track, providing a fixed point for the bolts of various components above; the sliding track is at the bottom, and the fixed end and the sliding track are connected through a concave-convex groove structure with interference fit; The oilfield steam injection boiler tail moving device also includes a translation action end, which is welded on the sliding track, the hydraulic rod of the horizontal moving hydraulic cylinder is connected with the translation action end through a shaft pin, the high-strength support base is designed as a hollow, and the horizontal moving hydraulic cylinder acts in the cavity of the high-strength support base, so that the translation action end is stressed and drives the sliding track to move as a whole; The horizontal moving hydraulic cylinder is a bidirectional horizontal moving hydraulic cylinder; The oilfield steam injection boiler tail moving device also includes a hydraulic control system, which includes a hydraulic connector, a hydraulic pipe bundle and a manual control valve, the hydraulic connector is fixed on the circular opening of the boiler head channel steel, one end is connected with the trailer hydraulic pump output pipe; the other end is connected with the hydraulic pipe bundle, which is filled with hydraulic oil during work; the hydraulic pump at the trailer head provides power, the manual control valve is installed in the middle of the outside of the boiler tail beam channel steel, the hydraulic connector, the hydraulic pipe bundle and the hydraulic oil inlet of the manual control valve are connected, and the outlet of the manual control valve is connected with the two load-bearing hydraulic legs and the horizontal moving hydraulic cylinder.

2. The oil field steam injection boiler tail shifting device according to claim 1, characterized in that, The fixed end is a groove structure, the sliding track is a convex groove structure, the convex groove part of the sliding track is inserted into the groove structure of the fixed end, realizing the relative sliding of the sliding track in the fixed end.

3. The oil field steam injection boiler tail shifting device of claim 1, wherein, The sliding track is 3 meters long.

4. The oil field steam injection boiler tail shifting device of claim 1, wherein, The high-strength support base is connected with the fixed end through a bolt.

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