Sealing device for rotating head of petroleum drilling machine

Abstract

The utility model relates to a sealing device for a rotating head of a petroleum drilling machine. The sealing device comprises an arc-shaped sealing body, two hinges are fixedly connected to the side surface of the arc-shaped sealing body; the other side surface of the arc-shaped sealing body is fixedly connected with a handle; a plurality of sealing nails are distributed on the side face of the arc-shaped sealing body, and the sealing nails and the handle are located on the same side. A rod body is wrapped at the upper end in the arc-shaped sealing body; a petroleum swivel is wrapped at the bottom end in the arc-shaped sealing body; the rod body is fixedly connected with the connecting ring, and the petroleum swivel is rotationally connected with the interior of the connecting ring. Through the arrangement of the arc-shaped sealing body, a closed space can be formed at the position of the connecting ring at the connecting position of the rod body and the petroleum swivel, the closed space is isolated from the external complex working environment, and therefore the connecting ring is protected; through cooperation of a hinge and a handle, the arc-shaped sealing body can be freely opened and closed, and device disassembly is facilitated; and by arranging the sealing nail, the arc-shaped sealing body can be integrally closed, and the sealing effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of mechanical seal, specifically is a petroleum drilling rig rotary head sealing device. BACKGROUND

[0002] The petroleum drilling rig rotary head sealing device is an important component of the petroleum drilling equipment, and the design purpose is to ensure the sealing performance between the rotary head and the rotating rod during drilling, and the main purpose is to prevent the leakage of liquid or other fluids in the drilling, so as to ensure the safety of the drilling operation and improve the work efficiency.

[0003] The existing petroleum drilling rig rotary head sealing device is generally sleeved with a rubber sleeve between the rotating rod and the rotary head, and then sealed by some additional auxiliary devices, and the sealing mode is single, the sealing element sealing device and the rotary head combination are not handled well, which leads to poor sealing performance.

[0004] Therefore, the utility model provides a petroleum drilling rig rotary head sealing device. UTILITY MODEL CONTENTS

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem in the background art is solved.

[0006] The utility model solves the technical scheme that the utility model discloses a petroleum drilling rig rotary head sealing device, including arc sealing body, the arc sealing body side fixedly connected with two hinges, the arc sealing body opposite side fixedly connected with handle, the arc sealing body side distribution has a plurality of sealing nails, and sealing nail is located with handle same side, the arc sealing body inside upper end is wrapped with rod body, the arc sealing body inside bottom end is wrapped with petroleum rotary head, the rod body is connected with connecting ring fixedly, and petroleum rotary head is rotatably connected with the connecting ring inside. Through the setting of the arc sealing body, a closed space can be formed at the connecting ring at the connection between the rod body and the petroleum rotary head, which is isolated from the complex working environment outside, thereby forming protection for the connecting ring, through the cooperation of the hinge and the handle, the arc sealing body can be freely opened and closed, which is beneficial to the disassembly of the device, and through the setting of the sealing nail, the arc sealing body can be closed as a whole, achieving the effect of sealing.

[0007] A first sealing ring is fixedly connected to the arc sealing body at the middle link. Through the setting of the first sealing ring, the closed joint of the arc sealing body can be made more tightly, and the sealing effect is enhanced.

[0008] The bottom side of the rod body is fixedly connected with a supporting rod, the supporting rod is located on the upper part of the connecting ring and inside the arc-shaped sealing body.

[0009] The inner top end of the arc-shaped sealing body is provided with a second sealing ring, the second sealing ring is annularly sleeved on the rod body and is in close contact with the rod body and the inner part of the arc-shaped sealing body respectively.

[0010] The inner bottom end of the arc-shaped sealing body is provided with a movable ring, the movable ring is annularly sleeved on the petroleum rotary head and is in close contact with the inner wall of the bottom end of the arc-shaped sealing body, rotating beads are distributed in the middle layer of the movable ring, and the rotating beads are annularly distributed.

[0011] The upper surface of the arc-shaped sealing body is fixedly connected with a fixed cone, and the fixed cone is inserted into the rod body through the insertion hole.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The utility model discloses a petroleum drilling rig rotary head sealing device, through the setting of arc-shaped sealing body, can form the closed space at the connecting ring of the connection of rod body and petroleum rotary head, is isolated with the complex working environment of outside, thereby forms the protection to the connecting ring, through the cooperation of hinge and handle, can freely open and close arc-shaped sealing body, is favorable to the device dismounting, through the setting sealing nail, can close arc-shaped sealing body as a whole, reaches the effect of closing.

[0014] 2. The utility model discloses a petroleum drilling rig rotary head sealing device, due to the complex working environment in the rotary well, the arc-shaped sealing body bears pressure outside, through the setting of supporting rod, can resist the partial pressure of arc-shaped sealing body outside, makes arc-shaped sealing body not easy to deform, and further enhances the life of this device. DRAWINGS

[0015] The utility model will be further described below in combination with the drawings.

[0016] Figure 1 It is the perspective view of the utility model;

[0017] Figure 2 It is the internal perspective view of the utility model;

[0018] Figure 3 is a bottom sectional view in the utility model;

[0019] Figure 4 is a top sectional view in the utility model;

[0020] Figure 5 is a bottom sectional view in the utility model;

[0021] Figure 6 is Figure 2 is the local enlarged view of 4 and 5 in the figure;

[0022] Figure 7 is a top side view in the utility model;

[0023] In the figure: 1, arc-shaped sealing body; 11, hinge; 12, handle; 13, sealing nail; 14, rod body; 15, petroleum rotary head; 16, connecting ring; 2, first sealing ring; 3, supporting rod; 4, second sealing ring; 5, movable ring; 51, rotating bead; 6, fixed cone; 61, insertion hole. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0025] As Figures 1-2 shown, the utility model embodiment described a petroleum drilling machine rotary head sealing device, including arc-shaped sealing body 1, arc-shaped sealing body 1 side fixed connection has two hinges 11, arc-shaped sealing body 1 another side fixed connection has handle 12, arc-shaped sealing body 1 side distribution has multiple sealing nails 13, sealing nail 13 and handle 12 are located at the same side, arc-shaped sealing body 1 inside upper end is wrapped with rod body 14, arc-shaped sealing body 1 inside bottom end is wrapped with petroleum rotary head 15, rod body 14 is fixedly connected with connecting ring 16, petroleum rotary head 15 is rotatably connected with the inside of connecting ring 16.Working, first, rod body 14 and petroleum rotary head 15 are rotatably connected through connecting ring 16, arc-shaped sealing body 1 is formed by two semicircles, closes and forms a closed body, hinge 11 is fixedly connected in the side of two semicircles, is the rotating shaft, at this time, arc-shaped sealing body 1 is opened through handle 12, after arc-shaped sealing body 1 is set on rod body 14, petroleum rotary head 15, installs sealing nail 13 in corresponding hole position, and is tightened fixedly.By the setting of arc-shaped sealing body 1, can form closed space at the connecting ring 16 of rod body 14 and petroleum rotary head 15, is isolated from the complex working environment of outside, thereby forming protection to connecting ring 16, through the cooperation of hinge 11 and handle 12, arc-shaped sealing body 1 can be freely opened and closed, which is beneficial to the disassembly of the device, by setting sealing nail 13, arc-shaped sealing body 1 can be closed as a whole, and the effect of airtightness is achieved.

[0026] As Figure 2 shown, the arc-shaped sealing body 1 is fixed with a first sealing ring 2 at the middle link. When the arc-shaped sealing body 1 is wrapped around the rod body 14 and the oil rotary head 15, the first sealing ring 2 is installed before closing, and then the handle 12 is used to close the arc-shaped sealing body 1, and the sealing pin 13 is installed in the corresponding hole and is tightly fixed. The setting of the first sealing ring 2 can make the closed joint of the arc-shaped sealing body 1 more tightly, and the sealing effect is enhanced.

[0027] As Figure 3 shown, the bottom side of the rod body 14 is fixed with a support rod 3, which is located on the upper part of the connecting ring 16 and inside the arc-shaped sealing body 1. When the arc-shaped sealing body 1 wraps the rod body 14 and closes, the top end of the support rod 3 is in contact with the inside of the arc-shaped sealing body 1, which supports the inside of the arc-shaped sealing body 1. Due to the complex working environment inside the rotary well, the outside of the arc-shaped sealing body 1 bears pressure. The setting of the support rod 3 can resist the pressure of the outside of the arc-shaped sealing body 1, so that the arc-shaped sealing body 1 is not easy to deform, and the service life of the device is enhanced.

[0028] As Figure 2 , Figure 4 and Figure 6 shown, the inside top of the arc-shaped sealing body 1 is sleeved with a second sealing ring 4, which is annularly sleeved on the rod body 14 and tightly contacts the rod body 14 and the inside of the arc-shaped sealing body 1. When the arc-shaped sealing body 1 is wrapped around the rod body 14 and the oil rotary head 15, the second sealing ring 4 is installed on the rod body 14 before closing, and then the arc-shaped sealing body 1 is closed. At this time, the inner wall of the second sealing ring 4 tightly fits the outer surface of the rod body 14, and the outer side of the second sealing ring 4 tightly fits the inner wall of the upper end of the arc-shaped sealing body 1, and the sealing effect is achieved. The setting of the second sealing ring 4 achieves the sealing effect of the upper end, and further enhances the sealing property of the device.

[0029] As Figures 5-6 shown, the inside bottom of the arc-shaped sealing body 1 is sleeved with a movable ring 5, which is annularly sleeved on the oil rotary head 15 and tightly contacts the inner wall of the bottom of the arc-shaped sealing body 1. The movable ring 5 is distributed with rotating beads 51 in the middle layer, and the rotating beads 51 are annularly distributed. When the arc-shaped sealing body 1 is wrapped around the rod body 14 and the oil rotary head 15, the movable ring 5 and the rotating beads 51 are installed on the oil rotary head 15 before closing, and then the arc-shaped sealing body 1 is closed. At this time, the rotating beads 51 tightly fit the outer wall of the oil rotary head 15 and the inner side of the bottom of the arc-shaped sealing body 1. Due to the large number and close arrangement of the rotating beads 51, the bottom mud is not easy to enter the inside of the arc-shaped sealing body 1 under the condition of rotation, and the bottom sealing effect is further improved.

[0030] As Figure 7 The upper surface of the arc-shaped sealing body 1 is fixed with a fixed cone 6, and the fixed cone 6 is inserted into the rod body 14 through the insertion hole 61. In operation, the arc-shaped sealing body 1 is closed, the fixed cone 6 is inserted through the insertion hole 61, and the fixed cone 6 is uniformly distributed on the upper surface of the arc-shaped sealing body 1. By setting the insertion hole 61, the arc-shaped sealing body 1 can be tightly fixed on the upper surface of the rod body 14 to prevent it from rotating and falling off, thereby enhancing the sealing performance of the device.

[0031] The working principle is that in operation, the rod body 14 and the petroleum rotating head 15 are first rotationally connected through the connecting ring 16, the arc-shaped sealing body 1 is composed of two semicircles, and is closed to form a sealed body. The hinge 11 is fixed on the side surface of the two semicircles and serves as a rotating shaft. After the arc-shaped sealing body 1 is sleeved on the rod body 14 and the petroleum rotating head 15, the sealing pin 13 is installed on the corresponding hole position and is tightly fixed. In operation, after the arc-shaped sealing body 1 is sleeved on the rod body 14 and the petroleum rotating head 15, a first sealing ring 2 is installed on the arc-shaped sealing body 1 before it is closed, the arc-shaped sealing body 1 is closed through the handle 12, and the sealing pin 13 is installed on the corresponding hole position and is tightly fixed. In operation, when the arc-shaped sealing body 1 wraps the rod body 14 and is closed, the top end of the supporting rod 3 is in contact with the inside of the arc-shaped sealing body 1 and supports the inside of the arc-shaped sealing body 1. In operation, after the arc-shaped sealing body 1 is sleeved on the rod body 14 and the petroleum rotating head 15, a second sealing ring 4 is installed on the rod body 14 before it is closed, and the arc-shaped sealing body 1 is closed. At this time, the inner wall of the second sealing ring 4 is tightly attached to the outer surface of the rod body 14, and the outer side of the second sealing ring 4 is tightly attached to the inner wall of the upper end of the arc-shaped sealing body 1, thereby achieving the sealing effect. In operation, after the arc-shaped sealing body 1 is sleeved on the rod body 14 and the petroleum rotating head 15, a movable ring 5 and a rotating bead 51 are installed on the petroleum rotating head 15 before it is closed, and the arc-shaped sealing body 1 is closed. At this time, the rotating bead 51 is tightly attached to the outer wall of the petroleum rotating head 15 and the inner side of the bottom of the arc-shaped sealing body 1. In operation, the arc-shaped sealing body 1 is closed, the fixed cone 6 is inserted through the insertion hole 61, and the fixed cone 6 is uniformly distributed on the upper surface of the arc-shaped sealing body 1.

[0032] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A sealing device for a rotary head of an oil drilling rig, characterized by: The arc-shaped sealing body (1) comprises an arc-shaped sealing body (1); two hinges (11) are fixedly connected to the side of the arc-shaped sealing body (1); a handle (12) is fixedly connected to the other side of the arc-shaped sealing body (1); a plurality of sealing pins (13) are distributed on the side of the arc-shaped sealing body (1), and the sealing pins (13) and the handle (12) are located on the same side; the upper end of the interior of the arc-shaped sealing body (1) is wrapped with a rod (14); the lower end of the interior of the arc-shaped sealing body (1) is wrapped with an oil swivel (15); the end of the rod (14) is fixedly connected to a connecting ring (16), and the oil swivel (15) is rotatably connected to the interior of the connecting ring (16).

2. The oil drilling rig rotary head sealing device according to claim 1, characterized in that: A first sealing ring (2) is fixedly connected to each of the middle connecting points of the arc-shaped sealing body (1).

3. The sealing device for a rotary head of an oil drilling rig according to claim 2, characterized in that: A support rod (3) is fixedly connected to the side surface of the bottom of the rod body (14), and the support rod (3) is located on the upper part of the connecting ring (16) and is also located inside the arc-shaped sealing body (1).

4. The sealing device for a rotary head of an oil drilling rig according to claim 3, characterized in that: A second sealing ring (4) is sleeved on the top end of the inner portion of the arc-shaped sealing body (1); the second sealing ring (4) is sleeved on the rod body (14) in an annular shape and is in close contact with the rod body (14) and the inner portion of the arc-shaped sealing body (1), respectively.

5. The oil drilling rig rotary head sealing device according to claim 4, characterized in that: The bottom end of the arc-shaped sealing body (1) is sleeved with a dynamic ring (5), which is sleeved on the oil rotary head (15) in an annular manner and is in close contact with the inner wall of the bottom end of the arc-shaped sealing body (1). Rotating beads (51) are distributed in the middle interlayer of the dynamic ring (5), and the rotating beads (51) are distributed in an annular manner.

6. The sealing device for a rotary head of an oil drilling rig according to claim 5, characterized in that: A fixing cone (6) is fixedly connected to the upper surface of the arc-shaped sealing body (1), and the fixing cone (6) is inserted into the rod body (14) through the insertion hole (61).

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