Coal-fired steam injection boiler

Abstract

The present application relates to a coal-fired steam injection boiler, which belongs to the field of heavy oil thermal recovery equipment. It includes a mobile device, a boiler body and a steam-water separator, wherein the boiler body is arranged on the mobile device, and the steam-water separator is detachably connected to the boiler body. The mobile device includes a mounting plate and a rotating wheel arranged at the bottom of the mounting plate, and the boiler body is arranged on the mounting plate. The bottom of the mounting plate is provided with a plurality of lifting assemblies and a plurality of foot plates, and the lifting assemblies are used to drive the foot plates close to or away from the ground. A calibration assembly is also provided at the bottom of the mounting plate, and the calibration assembly is used to detect the inclination of the mounting plate and drive the lifting assembly to drive the foot plates to lift and lower. The present application has the effect of improving the problem that the mobile device may be offset.

Description

Technical Field

[0001] The present application relates to the field of heavy oil thermal recovery equipment, and in particular to a coal-fired steam injection boiler. Background Art

[0002] With the widespread application of oil resources, global oil consumption has increased rapidly, rare oil resources have become increasingly scarce, and crude oil prices have continued to rise. People have begun to turn their attention to the development of rich heavy oil resources. Thermal recovery steam injection boilers are the core equipment for heavy oil production and are widely used in heavy oil production operations. However, with the continuous rise in international oil prices, the cost of using conventional fuel-fired steam injection boilers to produce heavy oil has continued to rise. In order to save production costs, coal-fired steam injection boilers have developed rapidly.

[0003] The existing Chinese patent application with publication number CN110657415A discloses a superheated steam injection boiler, which specifically discloses a mobile device, a boiler body and a steam-water separator. The boiler body is installed on the mobile device, and the boiler body and the steam-water separator are detachably connected. When the steam injection well site needs to be transferred, the mobile device can transport the boiler body to the designated position of the well site, thereby realizing the installation and use of the mobile superheated steam injection boiler.

[0004] Regarding the above-mentioned related technologies, the on-site conditions of the well site are relatively complicated. The ground is generally a simply leveled mud surface. When encountering heavy rain, the well site will appear muddy and partially subside. At this time, the mobile device directly installed on the well site may be offset, affecting the normal use of the steam injection boiler. Summary of the invention

[0005] In order to improve the problem that the moving device may deviate, the present application provides a coal-fired steam injection boiler.

[0006] The coal-fired steam injection boiler provided in this application adopts the following technical solution:

[0007] A coal-fired steam injection boiler comprises a moving device, a boiler body and a steam-water separator, wherein the boiler body is arranged on the moving device, and the steam-water separator is detachably connected to the boiler body; the moving device comprises a mounting plate and a rotating wheel arranged at the bottom of the mounting plate; the boiler body is arranged on the mounting plate, and a plurality of lifting assemblies and a plurality of foot plates are arranged at the bottom of the mounting plate, wherein the lifting assemblies are used to drive the foot plates to move closer to or away from the ground; a calibration assembly is also arranged at the bottom of the mounting plate, and the calibration assembly is used to detect the inclination of the mounting plate and drive the lifting assembly to drive the foot plates to lift and lower.

[0008] By adopting the above technical solution, the boiler body is installed on the mounting plate, and the boiler body is pulled to the designated position on the well site by a trailer or other tools. The lifting assembly drives the foot plate to move to fit the ground, and the mounting plate is supported by the lifting assembly and the foot plate. The calibration assembly detects the mounting plate. When the mounting plate is tilted, the calibration assembly detects the inclination of the mounting plate and controls the lifting assembly at the lowest point of the inclination to drive the foot plate to move toward the ground, so that the foot plate at the lowest point of the inclination lifts the mounting plate to prevent the mounting plate from further tilting and affecting the operation of the steam injection boiler.

[0009] Optionally, a trailer hook is provided at one end of the mounting plate.

[0010] By adopting the above technical solution, the trailer hook installed at one end of the mounting plate facilitates the movement of the mounting plate and the boiler body on the mounting plate.

[0011] Optionally, the lifting assembly includes a hydraulic cylinder, which is arranged at the bottom of the mounting plate, the piston rod of the hydraulic cylinder extends toward the ground, and the foot plate is arranged at the end of the piston rod of the hydraulic cylinder.

[0012] By adopting the above technical solution, the hydraulic cylinder is started, and the piston rod of the hydraulic cylinder is extended or retracted, thereby driving the foot plate at the top end of the hydraulic cylinder piston rod to move closer to or away from the ground, thereby achieving the effect of facilitating the driving of the foot plate for lifting.

[0013] Optionally, a through hole is opened on the mounting plate near the hydraulic cylinder, a positioning rod is passed through the through hole, the positioning rod is vertically inserted into the ground, the calibration component includes a pressure sensor and a controller, a plurality of the positioning rods are sleeved with a fixing cylinder, the plurality of the fixing cylinders are connected by a connecting rod, a calibration rod is arranged on the fixing cylinder, the calibration rod is in conflict with the mounting plate, the pressure sensor is arranged on the top of the calibration rod, the controller is arranged on the calibration rod, the pressure sensor is electrically connected to the controller, and the controller is connected to the hydraulic cylinder.

[0014] By adopting the above technical solution, the positioning rod is vertically passed through the mounting plate and then inserted into the ground, a fixing cylinder is installed on multiple positioning rods, a calibration rod is installed on the fixing cylinder, and a pressure sensor and a controller are installed on the calibration rod. When the mounting plate is tilted, the distance between the lowest end of the mounting plate and the fixing cylinder is reduced, and the pressure on the pressure sensor on the calibration rod at the lower part of the mounting plate becomes greater. The controller receives the signal from the pressure sensor and starts the hydraulic cylinder, driving the piston rod of the hydraulic cylinder to extend, thereby lifting the lower end of the mounting plate until the pressures on multiple pressure sensors are the same, thereby achieving the effect of keeping the mounting plate level.

[0015] Optionally, a fixing assembly and an adjusting assembly are provided on the fixing cylinder, and the fixing assembly and the adjusting assembly are used to connect or separate the positioning rod and the fixing cylinder.

[0016] By adopting the above technical solution, the positioning rod passes through the fixing tube, and the adjusting component enables the positioning rod to smoothly pass through the fixing tube and be inserted into the ground. The fixing component fixes the fixing tube on the positioning rod, so that the reference frame is connected between multiple positioning rods, thereby achieving the effect of facilitating the fixing of the reference frame.

[0017] Optionally, a latch plate is provided on the fixing cylinder, a latch seat is provided on the cylinder body of the hydraulic cylinder, the latch plate is located in the latch seat, and fixing pins are provided on the latch seat and the latch plate.

[0018] By adopting the above technical solution, when the boiler body is moved, the fixing pin is passed through the latch seat and the latch plate, so that the reference frame is fixedly installed on the mounting plate; when the positioning rod is installed in place, the fixing pin is removed, and the reference frame is separated from the mounting plate, which is convenient for detecting the inclination of the mounting plate.

[0019] Optionally, the fixing assembly includes a plurality of retaining plates disposed around the fixing tube, the ends of the plurality of retaining plates are tilted downward, and the retaining plates extend toward the positioning rod and abut against the positioning rod.

[0020] By adopting the above technical solution, when the positioning rod is inserted downward into the ground, the positioning rod moves downward relative to the fixed tube, and the positioning rod pushes the ends of the multiple clamping plates to move downward. The gaps between the ends of the multiple clamping plates tend to increase, and the positioning rod can move downward smoothly; when the positioning rod is installed in place, the reference frame is separated from the mounting plate, and the reference frame tends to move downward under the action of gravity. The fixed tube moves downward relative to the positioning rod. At this time, the positioning rod presses the multiple clamping plates upward, and the gaps between the ends of the multiple clamping plates tend to decrease, so that the fixed tube is clamped on the positioning rod, thereby facilitating the fixed installation of the reference frame on the positioning rod.

[0021] Optionally, the adjustment assembly includes a sleeve and a spring, the sleeve is slidably disposed between the fixed cylinder and the positioning rod, one end of the spring is connected to the sleeve, and the other end is connected to the fixed cylinder, and the spring makes the sleeve always have a tendency to move away from the locking plate.

[0022] By adopting the above technical solution, when the positioning rod needs to be pulled out from the ground, the sleeve is pressed toward the clamping plate, and the sleeve moves until it contacts the clamping plate and pushes the clamping plate to deform, thereby expanding the gap between the ends of the multiple clamping plates. At this time, the multiple clamping plates no longer clamp the positioning rod, making it easy to pull out the positioning rod.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The boiler body is installed on the mounting plate. The boiler body is pulled to the designated position on the well site by a trailer or other tools. The lifting assembly drives the foot plate to move to fit the ground. The mounting plate is supported by the lifting assembly and the foot plate. The calibration assembly detects the mounting plate. When the mounting plate tilts, the calibration assembly detects the tilt of the mounting plate and controls the lifting assembly at the lowest point of the tilt to drive the foot plate to move toward the ground. The foot plate at the lowest point of the tilt lifts the mounting plate to prevent the mounting plate from further tilting and affecting the operation of the steam injection boiler.

[0025] 2. The positioning rod is inserted into the ground after passing through the mounting plate vertically. A fixing tube is installed on the multiple positioning rods. A calibration rod is installed on the fixing tube. The pressure sensor and the controller are installed on the calibration rod. When the mounting plate is tilted, the distance between the lowest end of the mounting plate and the fixing tube is reduced, and the pressure on the pressure sensor on the calibration rod at the lower part of the mounting plate increases. The controller receives the signal from the pressure sensor and starts the hydraulic cylinder, driving the piston rod of the hydraulic cylinder to extend, thereby lifting the lower end of the mounting plate until the pressure on multiple pressure sensors is the same, so as to achieve the effect of keeping the mounting plate level.

[0026] 3. When the positioning rod is inserted downward into the ground, the positioning rod moves downward relative to the fixing tube, and the positioning rod pushes the ends of the multiple tightening plates to move downward. The gaps between the ends of the multiple tightening plates tend to increase, and the positioning rod can move downward smoothly. When the positioning rod is installed in place, the reference frame is separated from the mounting plate, and the reference frame tends to move downward under the action of gravity. The fixing tube moves downward relative to the positioning rod. At this time, the positioning rod presses the multiple tightening plates upward, and the gaps between the ends of the multiple tightening plates tend to decrease, so that the fixing tube is clamped on the positioning rod, thereby facilitating the fixed installation of the reference frame on the positioning rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram for showing the structure of the calibration component in the embodiment of the present application.

[0029] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0030] Description of reference numerals:

[0031] 1. Boiler body; 2. Mounting plate; 21. Trailer hook; 3. Rotating wheel; 41. Foot plate;

[0032] 42. Hydraulic cylinder; 421. Latch seat; 5. Positioning rod; 6. Fixing cylinder; 61. Connecting rod; 62. Latch plate; 63. Fixing pin; 71. Calibration rod; 72. Pressure sensor; 73. Controller; 8. Clamping plate; 91. Sleeve; 92. Spring. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-3 This application is described in further detail.

[0034] The present application embodiment discloses a coal-fired steam injection boiler, referring to Figure 1 A coal-fired steam-injected boiler includes a moving device, a boiler body 1 and a steam-water separator. The boiler body 1 is installed on the moving device, and the boiler body 1 is detachably connected to the steam-water separator (not shown in the figure). The moving device includes a mounting plate 2 and a plurality of rotating wheels 3 rotatably mounted on the bottom of the mounting plate 2. The mounting plate 2 is a rectangular plate, and the boiler body 1 is mounted on the upper surface of the mounting plate 2. A trailer hook 21 is fixedly mounted at one end of the mounting plate 2 to facilitate the movement of the mounting plate 2 by a trailer or other transport equipment. A lifting assembly and a foot plate 41 are installed at the four corners of the bottom of the mounting plate 2. The lifting assembly is connected to the foot plate 41 and is used to drive the foot plate 41 closer to or away from the ground. A calibration assembly is installed at the bottom of the mounting plate 2. The calibration assembly detects the inclination of the mounting plate 2 and controls the lifting assembly to drive the foot plate 41 to lift and lower, so that the mounting plate 2 always remains in a horizontal state.

[0035] The installation plate 2 is moved to the designated position of the well site by a trailer or other equipment. The installation plate 2 is supported on the ground by the rotating wheels 3 at the bottom. The lifting assembly drives the multiple foot plates 41 to move toward the ground and make the multiple foot plates 41 contact the ground. At this time, the foot plates 41 are flush with the bottom of the rotating wheels 3, and the installation plate 2 is supported by the foot plates 41. When the well site is affected by factors such as heavy rain and causes soil erosion or partial settlement, the installation plate 2 may tilt. At this time, the calibration assembly detects the tilt of the installation plate 2, and the calibration assembly controls the lifting assembly to drive the corresponding foot plates 41 to lift and lower the tilted lower end of the installation plate 2 through the lifting assembly, and the installation plate 2 is maintained in a horizontal state. This allows the boiler body 1 to operate normally and stably.

[0036] Reference Figure 1 and Figure 2 The lifting assembly includes a hydraulic cylinder 42, which is installed at the four corners of the bottom of the mounting plate 2. The cylinder body of the hydraulic cylinder 42 is fixedly connected to the bottom of the mounting plate 2, and the end of the piston rod of the hydraulic cylinder 42 extends vertically downward and is fixedly connected to the foot plate 41. A through hole is vertically opened on the mounting plate 2 and located on one side of each hydraulic cylinder 42. A positioning rod 5 is penetrated in the through hole. The positioning rod 5 vertically passes through the through hole and is inserted into the ground. A hole for the positioning rod 5 to pass through is opened on the foot plate 41 at a position directly opposite to the positioning rod 5.

[0037] Reference Figure 2 and Figure 3 , a fixing tube 6 is sleeved on each of the four positioning rods 5, the four fixing tubes 6 are located on the same horizontal plane, and the four fixing tubes 6 are fixedly connected in sequence through connecting rods 61. The calibration assembly includes a pressure sensor 72 and a controller 73. A calibration rod 71 is vertically mounted on the fixing tube 6, the calibration rod 71 extends toward the bottom wall of the mounting plate 2 and contacts the mounting plate 2, the pressure sensor 72 is mounted on the top of the calibration rod 71, the controller 73 is mounted on the calibration rod 71, the pressure sensor 72 is electrically connected to the controller 73, and the controller 73 is connected to the hydraulic cylinder 42.

[0038] There is no connection between the four positioning rods 5 and the mounting plate 2. The fixing tube 6 is fixedly installed on the positioning rod 5. When the mounting plate 2 is tilted, the distance between the mounting plate 2 and the fixing tube 6 changes. The tilted lower end of the mounting plate 2 will squeeze the pressure sensor 72 on the calibration rod 71. The pressure sensor 72 transmits the detected pressure signal to the controller 73. The controller 73 controls the hydraulic cylinder 42 to start. The hydraulic cylinder 42 drives the foot plate 41 to move toward the ground to lift the mounting plate 2 until the pressures on multiple pressure sensors 72 are the same. At this time, the mounting plate 2 is in a horizontal state, so that the boiler body 1 on the mounting plate 2 can operate normally.

[0039] Reference Figure 2 and Figure 3 A latch plate 62 is fixedly installed on the side of the fixed cylinder 6 facing the hydraulic cylinder 42, a latch seat 421 is installed on the outer wall of the hydraulic cylinder 42, the latch plate 62 is inserted into the latch seat 421, and a fixing pin 63 is inserted between the latch plate 62 and the latch seat 421. When the boiler body 1 moves under the drive of the mounting plate 2, the fixed cylinder 6 is fixedly installed on the hydraulic cylinder 42, which is convenient for driving multiple fixed cylinders 6 to move. A fixing component and an adjusting component are installed on the fixed cylinder 6. The fixing component is used to fix the fixed cylinder 6 on the positioning rod 5, and the adjusting component is used to separate the fixed cylinder 6 from the positioning rod 5, so as to facilitate the removal of the positioning rod 5 from the fixed cylinder 6. When the mounting plate 2 moves to the target position, the positioning rod 5 is passed through the mounting plate 2 and the fixed cylinder 6. At this time, the fixed cylinder 6 is connected to the positioning rod 5 through the fixing component, so that the calibration component on the fixed cylinder 6 can detect the inclination of the mounting plate 2. When the mounting plate 2 is moved again, the fixing tube 6 is separated from the positioning rod 5 by using the adjusting assembly, and the positioning rod 5 is pulled out.

[0040] Reference Figure 2 and Figure 3The inner wall of the fixing tube 6 is provided with an annular groove, and the fixing assembly includes a plurality of abutting pieces 8 mounted around the fixing tube 6. The abutting pieces 8 are steel sheets, so the abutting pieces 8 have a certain toughness. The abutting pieces 8 are fixedly connected to the inner wall of the annular groove, and the ends of the abutting pieces 8 extend downwardly at an angle. The ends of the plurality of abutting pieces 8 are inclined toward the positioning rod 5 and abut against the positioning rod 5. The surface of the positioning rod 5 is rough.

[0041] When the positioning rod 5 is inserted into the fixed cylinder 6 from top to bottom, the positioning rod 5 pushes the multiple abutting pieces 8 downward, so that the gaps between the ends of the multiple abutting pieces 8 tend to increase, and the positioning rod 5 can be smoothly inserted into the fixed cylinder 6. After the positioning rod 5 is inserted into the ground to the designed depth, the fixed cylinder 6 is separated from the hydraulic cylinder 42. At this time, the fixed cylinder 6 has a tendency to move downward under the action of gravity. At this time, the ends of the multiple abutting pieces 8 are in conflict with the positioning rod 5, and the gaps between the ends of the multiple abutting pieces 8 tend to decrease, thereby clamping and fixing the positioning rod 5 in the fixed cylinder 6.

[0042] Reference Figure 2 and Figure 3 The adjustment component includes a sleeve 91 and a spring 92. The sleeve 91 is slidably installed in the fixed cylinder 6, and the sleeve 91 is located between the fixed cylinder 6 and the positioning rod 5. The positioning rod 5 is inserted into the sleeve 91. There are multiple springs 92 vertically installed on the top of the fixed cylinder 6. One end of the spring 92 is connected to the fixed cylinder 6 and the other end is connected to the sleeve 91. The spring 92 makes the sleeve 91 always have a tendency to move away from the locking plate 8.

[0043] When it is necessary to move the boiler body 1 and pull the positioning rod 5 out of the fixed tube 6, press the sleeve 91 downward, and the sleeve 91 moves downward until it contacts the multiple clamping plates 8. Continue to press the sleeve 91, and the sleeve 91 drives the ends of the multiple clamping plates 8 away from each other, so that the gaps between the ends of the multiple clamping plates 8 increase, so that the positioning rod 5 can be pulled out from between the fixed tubes 6.

[0044] The implementation principle of a coal-fired steam injection boiler in an embodiment of the present application is as follows: the mounting plate 2 is moved to the designated position of the well site by a trailer or other tool, the hydraulic cylinder 42 drives the foot plate 41 to move to contact the ground, the foot plate 41 provides auxiliary support for the mounting plate 2, the positioning rod 5 is vertically inserted into the ground from the through hole on the mounting plate 2, the fixing pin 63 is pulled out, so that the fixing cylinder 6 is separated from the hydraulic cylinder 42; when the mounting plate 2 is tilted, the distance between the mounting plate 2 at the lowest end of the tilt and the fixing cylinder 6 here is reduced, the pressure sensor 72 here is pressurized, the pressure sensor 72 transmits the detected pressure signal to the controller 73, the controller 73 controls the hydraulic cylinder 42 to extend, thereby supporting the mounting plate 2, until the pressures applied to the multiple pressure sensors 72 are the same, and the mounting plate 2 is adjusted to a horizontal state.

[0045] Finally, it should be noted that in the description of this application, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A coal-fired steam injection boiler, comprising a mobile device, a boiler body (1) and a steam-water separator, wherein the boiler body (1) is arranged on the mobile device, and the steam-water separator is detachably connected to the boiler body (1), characterized in that: The moving device comprises a mounting plate (2) and a rotating wheel (3) arranged at the bottom of the mounting plate (2); the boiler body (1) is arranged on the mounting plate (2); a plurality of lifting assemblies and a plurality of foot plates (41) are arranged at the bottom of the mounting plate (2); the lifting assemblies are used to drive the foot plates (41) to move closer to or farther from the ground; a calibration assembly is also arranged at the bottom of the mounting plate (2); the calibration assembly is used to detect the inclination of the mounting plate (2) and control the lifting assembly to drive the foot plates (41) to move up and down; The lifting assembly comprises a hydraulic cylinder (42), the hydraulic cylinder (42) is arranged at the bottom of the mounting plate (2), the piston rod of the hydraulic cylinder (42) extends toward the ground, and the foot plate (41) is arranged at the end of the piston rod of the hydraulic cylinder (42); A through hole is provided on the mounting plate (2) near the hydraulic cylinder (42), a positioning rod (5) is inserted into the through hole, the positioning rod (5) is vertically inserted into the ground, the calibration component comprises a pressure sensor (72) and a controller (73), a plurality of the positioning rods (5) are sleeved with a fixing tube (6), the plurality of the fixing tubes (6) are connected by a connecting rod (61), a calibration rod (71) is provided on the fixing tube (6), the calibration rod (71) is in contact with the mounting plate (2), the pressure sensor (72) is arranged at the top end of the calibration rod (71), the controller (73) is arranged on the calibration rod (71), the pressure sensor (72) is electrically connected to the controller (73), and the controller (73) is connected to the hydraulic cylinder (42).

2. A coal-fired steam injection boiler according to claim 1, characterized in that: A trailer hook (21) is provided at one end of the mounting plate (2).

3. A coal-fired steam injection boiler according to claim 1, characterized in that: The fixing cylinder (6) is provided with a fixing component and an adjusting component, and the fixing component and the adjusting component are used to connect or separate the positioning rod (5) and the fixing cylinder (6).

4. A coal-fired steam injection boiler according to claim 3, characterized in that: The fixing cylinder (6) is provided with a latch plate (62), the cylinder body of the hydraulic cylinder (42) is provided with a latch seat (421), the latch plate (62) is located in the latch seat (421), and fixing pins (63) are provided on the latch seat (421) and the latch plate (62).

5. A coal-fired steam injection boiler according to claim 4, characterized in that: The fixing assembly comprises a plurality of retaining plates (8) disposed in a surrounding manner within the fixing tube (6), the ends of the plurality of retaining plates (8) being inclined downward, and the retaining plates (8) extending toward the positioning rod (5) and in contact with the positioning rod (5).

6. A coal-fired steam injection boiler according to claim 5, characterized in that: The adjustment assembly comprises a sleeve (91) and a spring (92); the sleeve (91) is slidably arranged between the fixed cylinder (6) and the positioning rod (5); one end of the spring (92) is connected to the sleeve (91) and the other end is connected to the fixed cylinder (6); the spring (92) enables the sleeve (91) to always have a tendency to move away from the retaining plate (8).

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