Injection head tower, lifting skid frame and processing method thereof

Abstract

The present application provides an injection head tower, a lifting skid frame and a processing method thereof, wherein the lifting skid frame comprises a bottom skid frame, a movable skid frame and a lifting cylinder. The bottom skid frame comprises a bottom frame, a top frame and a guide column, wherein a first mounting hole is formed on the bottom frame, a second mounting hole is formed on the top frame, and the two ends of the guide column are respectively connected with the first mounting hole and the second mounting hole. The movable skid frame is formed with a guide hole, and the guide hole is slidably matched with the guide column so that the movable skid frame can be lifted and lowered along the guide column. One end of the lifting cylinder is connected to the bottom skid frame, and the other end is connected to the movable skid frame. The lifting skid frame provided in the present application can effectively reduce the risk of the movable skid frame getting stuck when being raised or lowered.

Description

Technical Field

[0001] The present application relates to the technical field of oil production engineering machinery, and in particular to an injection head tower, a lifting skid frame and a processing method thereof. Background Art

[0002] At present, in the process of oil production, it is usually necessary to place a coiled tubing injection head tower at the wellhead of the oil well, or to place the injection head on a simple injection head tower when repairing the injection head. The injection head tower generally includes a base frame and a multi-layer skid frame. The top skid frame can usually be raised and lowered to facilitate the replacement of the blowout preventer tool at the injection head.

[0003] However, in the prior art, the lifting skid frame is usually of a climbing type, which is prone to getting stuck during the process of raising or lowering. Summary of the invention

[0004] In view of this, the embodiments of the present application hope to provide an injection head tower, a lifting skid frame and a processing method thereof, so as to solve the problem of the lifting skid frame getting stuck during operation.

[0005] To achieve the above-mentioned purpose, a first aspect of an embodiment of the present application provides a lifting skid frame, comprising:

[0006] The bottom pry frame comprises a bottom frame, a top frame and a guide column, wherein the bottom frame is formed with a first mounting hole, the top frame is formed with a second mounting hole, and two ends of the guide column are respectively matched and connected with the first mounting hole and the second mounting hole;

[0007] A movable skid frame is formed with a guide hole, wherein the guide hole is slidably matched with the guide column so that the movable skid frame can be lifted and lowered along the guide column;

[0008] A lifting cylinder, one end of which is connected to the bottom skid frame, and the other end of which is connected to the movable skid frame.

[0009] Furthermore, the coaxiality of the first mounting hole, the second mounting hole and the guide hole is less than or equal to 0.06 mm, and the coaxiality of the guide column is less than or equal to 0.06 mm.

[0010] Furthermore, the number of the guide posts is four, and the four guide posts are distributed in a rectangular shape on the bottom skid frame.

[0011] Further, the number of the jacking cylinders is two, which are respectively arranged at the diagonals of the four guide columns distributed in a rectangular shape; or,

[0012] The number of the jacking cylinders is four, and they are respectively arranged at right angles of the four guide columns distributed in a rectangular shape.

[0013] Furthermore, the lifting skid frame also includes a sleeve, the sleeve is installed in the guide hole, and the guide column is slidably matched with the sleeve.

[0014] Further, the guide post comprises a guide post body and a chrome-plated layer formed on the surface of the guide post body; and / or,

[0015] The surface hardness of the guide column is 285-315 HB.

[0016] The lifting skid frame provided in the embodiment of the present application adopts a guide column, thereby providing a certain guiding effect for the movable skid frame during the process of the movable skid frame rising or falling relative to the bottom skid frame, thereby making the process of the movable skid frame rising or falling smoother and less likely to get stuck.

[0017] A second aspect of the embodiments of the present application provides an injection head tower, comprising an injection head mounting platform and the lifting skid frame described in any one of the above embodiments, wherein the injection head mounting platform is connected to the movable skid frame, and the stroke of the lifting cylinder is 1m to 2m.

[0018] The injection head tower provided in the embodiment of the present application has the same technical effect as the lifting skid provided in any of the above embodiments, and will not be described in detail here.

[0019] A third aspect of the embodiments of the present application provides a method for processing a lifting skid frame, which is used to process the lifting skid frame described in any of the above embodiments. The processing method includes:

[0020] Processing and forming the frame of the bottom frame, the frame of the top frame and the frame of the movable skid frame;

[0021] Positioning and fixing the frame of the bottom frame, the frame of the top frame and the frame of the movable skid frame;

[0022] The first mounting hole, the second mounting hole and the guide hole are integrally processed to form a coaxiality with a first preset value;

[0023] The guide column is processed to have a coaxiality that is the first preset value.

[0024] Furthermore, the first preset value is less than or equal to 0.06 mm.

[0025] Furthermore, the step of machining the guide column with a coaxiality of a first preset value comprises:

[0026] Obtaining a blank of the guide column;

[0027] Rough turning the blank to make the coaxiality of the blank reach a first preset value;

[0028] Performing quenching and tempering treatment on the rough-turned blank;

[0029] Chromium plating the quenched and tempered blank;

[0030] The roughcast part is finely ground and chrome-plated.

[0031] The processing method of the lifting skid frame provided in the embodiment of the present application is to first position and fix the frame of the bottom frame, the frame of the top frame and the frame of the movable skid frame together before processing and forming the first mounting hole, the second mounting hole and the guide hole, and then process the whole frame to form the coaxial first mounting hole, the second mounting hole and the guide hole. Through such a processing method, the coaxiality of the first mounting hole, the second mounting hole and the guide hole can be effectively guaranteed, thereby greatly reducing the gap between the guide hole and the guide column, and effectively reducing the risk of the movable skid frame getting stuck during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of the structure of a lifting skid frame provided in an embodiment of the present application in a raised state;

[0033] Figure 2 A schematic diagram of the structure of a lifting skid frame provided in an embodiment of the present application in a descending state;

[0034] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0035] Figure 4 A schematic diagram of the structure of an injection head tower provided in one embodiment of the present application;

[0036] Figure 5 A flowchart of a method for processing a lifting skid frame provided in an embodiment of the present application; and

[0037] Figure 6 The present invention is a flow chart of a method for processing a guide column provided by an embodiment of the present invention.

[0038] Description of reference numerals:

[0039] 100. Lifting skid frame; 1. Bottom skid frame; 11. Bottom frame; 111. First mounting hole; 12. Top frame; 121. Second mounting hole; 13. Guide column; 2. Movable skid frame; 21. Guide hole; 3. Lifting cylinder; 4. Sleeve; 200. Injection head mounting platform. DETAILED DESCRIPTION

[0040] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed description in the specific implementation method should be understood as an explanation of the purpose of the present application and should not be regarded as an improper limitation on the present application.

[0041] The directional terms in the description of this application 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 operate in a specific orientation, and therefore should not be understood as limiting this application.

[0042] Most of the lifting skids in the prior art are climbing structures, that is, the movable skid is integrally connected with the bottom skid, and when the movable skid needs to move relative to the bottom skid, it is usually achieved by relative sliding between the connecting parts of the two. Usually, the connecting parts of the movable skid and the bottom skid are large in area and have limited rigidity, so it is easy to generate a gap between the sliding parts of the two. Therefore, in the process of the movable skid moving relative to the bottom skid, especially when the force on the movable skid is uneven and tilting occurs, the two are prone to get stuck in the relative movement, especially after a long time, the connecting parts of the two will be worn, deformed and other adverse factors, which makes it easier for the two to get stuck, causing many inconveniences to normal construction operations.

[0043] In view of this, a first aspect of an embodiment of the present application provides a lifting skid frame 100, see Figure 1 to Figure 4 , including a bottom skid frame 1, a movable skid frame 2 and a lifting cylinder 3. The bottom skid frame 1 includes a bottom frame 11, a top frame 12 and a guide column 13. The bottom frame 11 is formed with a first mounting hole 111, the top frame 12 is formed with a second mounting hole 121, and the two ends of the guide column 13 are respectively connected with the first mounting hole 111 and the second mounting hole 121. The movable skid frame 2 is formed with a guide hole 21, and the guide hole 21 is slidably matched with the guide column 13, so that the movable skid frame 2 can be lifted and lowered along the guide column 13. One end of the lifting cylinder 3 is connected to the bottom skid frame 1, and the other end is connected to the movable skid frame 2.

[0044] Specifically, the movable skid frame 2 cooperates with the guide column 13 through the guide hole 21, and is raised or lowered along the guide column 13 under the action of the lifting cylinder 3. Due to the guiding effect of the guide column 13, the movable skid frame 2 can be raised or lowered along the guide column 13 smoothly.

[0045] It can be understood that the lifting cylinder 3 includes a piston rod (not shown in the figure) and a cylinder barrel (not shown in the figure), and one of the movable skid frame 2 and the bottom skid frame 1 is connected to the piston rod, and the other is connected to the cylinder barrel. In this way, when the cylinder barrel moves relative to the piston rod, the movable skid frame 2 rises or falls relative to the bottom skid frame 1.

[0046] The lifting skid frame 100 provided in the embodiment of the present application adopts the guide column 13, thereby providing a certain guiding effect for the movable skid frame 2 during the process of the movable skid frame 2 being raised or lowered relative to the bottom skid frame 1, thereby making the process of the movable skid frame 2 being raised or lowered smoother and less likely to get stuck.

[0047] Further, in one embodiment, in the lifting skid frame 100 provided by the present application, the coaxiality of the first mounting hole 111, the second mounting hole 121 and the guide hole 21 is less than or equal to 0.06 mm, and the coaxiality of the guide column 13 is less than or equal to 0.06 mm. For example, the coaxiality of the first mounting hole 111, the second mounting hole 121 and the guide hole 21 and the coaxiality of the guide column 13 can be 0.06 mm or 0.04 mm, etc. It can be understood that the two ends of the guide column 13 are respectively installed in the first mounting hole 111 and the second mounting hole 121. By setting the coaxiality of the first mounting hole 111, the second mounting hole 121 and the guide hole 21 to be less than or equal to 0.06 mm, combined with the coaxiality of the guide column 13 itself, it is beneficial to ensure the coaxiality between the two ends of the guide column 13, and then ensure the straightness of the motion trajectory of the movable pry frame 2 during the sliding process along the guide column 13, thereby effectively reducing the gap between the movable pry frame 2 and the guide column 13, and then greatly reducing the risk of the lifting pry frame 100 getting stuck during the lifting process.

[0048] In one embodiment, see Figure 1 and Figure 2 In the lifting skid frame 100 provided in the present application, the number of guide posts 13 is four, and the four guide posts 13 are distributed in a rectangular shape on the bottom skid frame 1. By providing four guide posts 13, and the four guide posts 13 are distributed in a rectangular shape, more effective support is provided for the movable skid frame 2, and the risk of the movable skid frame 2 tilting during the movement can be effectively reduced, thereby effectively reducing the risk of the movable skid frame 2 getting stuck during the movement.

[0049] In one embodiment, see Figure 2 In the lifting skid frame 100 provided in the present application, the number of the jacking oil cylinders 3 is two, which are respectively arranged at the diagonal positions of the four rectangularly distributed guide columns 13. By respectively arranging the two jacking oil cylinders 3 at the diagonal positions of the four rectangularly distributed guide columns 13, it is beneficial for the movable skid frame 2 to apply force to the two jacking oil cylinders 3 in a more balanced manner, preventing the two jacking oil cylinders 3 from being stuck due to a large difference in force, and the more balanced force of the two jacking oil cylinders 3 is also beneficial to the maintenance and care of the jacking oil cylinders 3 themselves, thereby increasing their service life.

[0050] In an optional embodiment, in the lifting skid frame 100 provided by the present application, the number of lifting cylinders is four, which are respectively arranged at right angles of four guide columns 13 distributed in a rectangular shape. By providing four lifting cylinders 3, it is more conducive to the balance of the supporting force of the lifting cylinders 3 on the movable skid frame 2, and while reducing the gap between the guide column 13 and the guide hole 21, it also reduces the bearing capacity requirements of a single lifting cylinder 3.

[0051] It should be noted that the number and arrangement positions of the jacking cylinders 3 are not limited to the above two methods, and the number and arrangement positions of the jacking cylinders 3 can be reasonably selected according to the actual bearing capacity requirements and the feasible spatial layout of the jacking cylinders 3.

[0052] In one embodiment, see Figure 2 and Figure 3 The lifting skid frame 100 provided in the present application further includes a sleeve 4, which is installed in the guide hole 21, and the guide column 13 is slidably matched with the sleeve 4. By providing the sleeve 4, the movement of the movable skid frame 2 relative to the guide column 13 can be smoother, reducing the risk of jamming.

[0053] Preferably, the sleeve 4 is a self-lubricating brass sleeve 4, which provides lubrication for the sliding mating surface between the guide column 13 and the sleeve 4 through its own self-lubricating medium, thereby greatly reducing the friction resistance during the lifting or lowering of the movable skid frame 2. Since the brass material is relatively soft and easily deformed, the risk of the movable skid frame 2 getting stuck during the movement is effectively reduced.

[0054] In an embodiment not shown, in the lifting skid frame 100 provided by the present application, the guide post 13 includes a guide post 13 body and a chrome-plated layer formed on the guide post 13 body. By providing the chrome-plated layer on the surface of the guide post 13 body, the hardness of the guide post 13 can be greatly improved, so that the guide post 13 is less likely to be deformed and its surface is less likely to be damaged, thereby effectively reducing the risk of a gap between the guide post 13 and the guide hole 21 of the movable skid frame 2, and further reducing the risk of the movable skid frame 2 getting stuck during the process of lifting or lowering.

[0055] Optionally, in one embodiment, in the lifting skid frame 100 provided in the present application, the surface hardness of the guide column 13 is 285-315HB, for example, it can be 285HB, 295HB, 300HB, or 315HB, etc., which can effectively reduce the risk of damage and deformation of the surface of the guide column 13.

[0056] The second aspect of the embodiment of the present application provides an injection head tower, see Figure 4 , including an injection head installation platform 200 and a lifting skid frame 100 as described in any of the above embodiments. The injection head installation platform 200 is connected to the movable skid frame 2, and the stroke of the lifting cylinder 3 is 1m to 2m. Specifically, the stroke of the lifting cylinder 3 can be 1m, 1.5m or 2m, etc. Preferably, the stroke of the lifting cylinder 3 is 1.5m.

[0057] The injection head tower provided in the embodiment of the present application has the same technical effect as the lifting skid frame 100 provided in any of the above embodiments, and will not be described in detail here.

[0058] The third aspect of the embodiment provides a method for processing a lifting skid frame 100. Figure 5 , used for processing the lifting skid frame 100 described in any one of the above embodiments, the processing method includes:

[0059] S10, processing to form the frame of the bottom frame 11, the frame of the top frame 12 and the frame of the movable skid frame 2;

[0060] S20, positioning and fixing the frame of the bottom frame 11, the frame of the top frame 12 and the frame of the movable skid frame 2;

[0061] S30, integrally processing to form a first mounting hole 111, a second mounting hole 121 and a guide hole 21 with a coaxiality of a first preset value;

[0062] S40, processing to form a guide column 13 with a coaxiality of a first preset value.

[0063] It can be known from the processing method provided in the above embodiment that before the first mounting hole 111, the second mounting hole 121 and the guide hole 21 are processed, the frame of the bottom frame 11, the frame of the top frame 12 and the frame of the movable pry frame 2 are first positioned and fixed together, and then the first mounting hole 111, the second mounting hole 121 and the guide hole 21 with a coaxiality of the first preset value are processed as a whole. Through such a processing method, the coaxiality of the first mounting hole 111, the second mounting hole 121 and the guide hole 21 can be effectively guaranteed, and the coaxiality between the two ends of the guide column 13 can be effectively guaranteed in combination with the coaxiality of the guide column 13, which greatly reduces the tilting amount caused by the lateral force of the movable pry frame 2 in the process of sliding along the guide column 13, thereby greatly reducing the gap between the guide hole 21 and the guide column 13, and effectively reducing the risk of the movable pry frame 2 getting stuck during movement.

[0064] In one embodiment, in the processing method provided by the present application, the first preset value is less than or equal to 0.06 mm, specifically, it can be 0.06 mm or 0.04 mm, etc.

[0065] For further information, see Figure 6 In the processing method provided in the embodiment of the present application, the step of S40, processing and forming the guide column 13 with a coaxiality of the first preset value, includes:

[0066] S41, obtaining a blank of the guide column 13;

[0067] S42, rough turning the blank, and making the coaxiality of the blank reach a first preset value;

[0068] S43, performing quenching and tempering treatment on the rough workpiece after rough turning;

[0069] S44, chrome plating the rough parts after quenching and tempering;

[0070] S45, rough parts after fine grinding and chrome plating.

[0071] Specifically, the size of the guide post 13 is obtained through the rough turning process, and the fine grinding allowance in the subsequent steps is left, and the coaxiality of the blank is guaranteed to be the first preset value through the rough turning process. The purpose of tempering the blank after rough turning is to improve the overall hardness of the guide post 13 to reduce the risk of its deformation. Then, by chrome-plating the blank after the tempering process, the surface hardness of the guide post 13 can be effectively improved. Further, the fine grinding process is used to reduce the surface roughness of the guide post 13, so that the movement of the movable skid 2 is smoother, and the risk of the movable skid 2 being stuck during the movement of the guide post 13 is further reduced. At the same time, since it is difficult to control the size of the workpiece during the chrome plating process, the dimensional accuracy of the guide post 13 formed by the processing can be better guaranteed by the fine grinding process after the chrome plating.

[0072] In this way, the formed part from the blank to the guide column 13 needs to go through a series of process flows including rough turning, tempering treatment, fine grinding and chrome plating. This process is similar to the processing method of the cylinder rod, which is beneficial to improve the hardness of the guide column 13 and make it meet the relevant coaxiality requirements, effectively reducing the risk of deformation and surface damage of the guide column 13 under the action of various directional forces, and further effectively reducing the risk of the movable skid 2 getting stuck during movement.

[0073] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0074] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A lifting skid frame, characterized in that: include: The bottom pry frame comprises a bottom frame, a top frame and a guide column, wherein the bottom frame is formed with a first mounting hole, the top frame is formed with a second mounting hole, and two ends of the guide column are respectively matched and connected with the first mounting hole and the second mounting hole; A movable skid frame is formed with a guide hole, wherein the guide hole is slidably matched with the guide column so that the movable skid frame can be lifted and lowered along the guide column; A lifting cylinder, one end of which is connected to the bottom skid frame, and the other end of which is connected to the movable skid frame; Wherein, the first mounting hole, the second mounting hole, the guide hole and the guide column are coaxially arranged.

2. The lifting skid frame according to claim 1, characterized in that: The coaxiality of the first mounting hole, the second mounting hole and the guide hole is less than or equal to 0.06 mm, and the coaxiality of the guide column is less than or equal to 0.06 mm.

3. The lifting skid frame according to claim 1, characterized in that: The number of the guide posts is four, and the four guide posts are distributed on the bottom skid frame in a rectangular shape.

4. The lifting skid frame according to claim 3, characterized in that: The number of the jacking cylinders is two, which are respectively arranged at the diagonals of the four guide columns distributed in a rectangular shape; or, The number of the jacking cylinders is four, and they are respectively arranged at right angles of the four guide columns distributed in a rectangular shape.

5. The lifting skid frame according to claim 1, characterized in that: The lifting skid frame further comprises a sleeve, which is installed in the guide hole, and the guide column is slidably matched with the sleeve.

6. The lifting skid frame according to claim 1, characterized in that: The guide post comprises a guide post body and a chrome-plated layer formed on the surface of the guide post body; and / or, The surface hardness of the guide column is 285-315 HB.

7. An injection head tower, characterized in that: It comprises an injection head installation platform and a lifting skid frame as described in any one of claims 1 to 6, wherein the injection head installation platform is connected to the movable skid frame, and the stroke of the lifting cylinder is 1m to 2m.

8. A method for processing a lifting skid frame, characterized in that: Used for processing the lifting skid frame according to any one of claims 1 to 6, the processing method comprises: Processing and forming the frame of the bottom frame, the frame of the top frame and the frame of the movable skid frame; Positioning and fixing the frame of the bottom frame, the frame of the top frame and the frame of the movable skid frame; The first mounting hole, the second mounting hole and the guide hole are integrally processed to form a coaxiality with a first preset value; The guide column is processed to have a coaxiality that is the first preset value.

9. The processing method according to claim 8, characterized in that: The first preset value is less than or equal to 0.06 mm.

10. The processing method according to claim 8, characterized in that: The step of machining the guide column to form a coaxiality of the guide column to a first preset value comprises: Obtaining a blank of the guide column; Rough turning the blank to make the coaxiality of the blank reach a first preset value; Performing quenching and tempering treatment on the rough-turned blank; Chromium plating the quenched and tempered blank; The roughcast part is finely ground and chrome-plated.

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