CN105937699B - A thread sealing grease gun - Google Patents

Abstract

The invention provides a thread sealing grease gun, which comprises a gun body (10) and a gun head (20), wherein the gun head (20) is arranged at one end of the gun body (10), a closed cavity (111) for containing sealing grease is arranged in the gun body (10), the gun head (20) is provided with a sealing grease outlet (23), the gun body (10) also comprises a piston (17) which can extrude the sealing grease in the closed cavity (111) and discharge the sealing grease from the sealing grease outlet (23), and the thread sealing grease gun also comprises a rotary grease discharging driving part which can drive the piston (17) to extrude the sealing grease in the closed cavity (111) and simultaneously rotate the gun head (20). The thread sealing grease gun can drive the sealing grease gun head to rotate through the rotation of the handle, and meanwhile, the piston is pushed to further press the thread sealing grease to overflow from the sealing grease outlet of the gun head, so that the purpose that the sealing grease is uniformly coated on the internal thread of the oil pipe coupling is achieved.

Description

A thread sealing grease gun

technical field

The invention relates to a thread sealing grease gun capable of applying thread sealing grease to threads.

Background technique

During downhole construction, before the tubing that needs to withstand internal pressure is run into the well, when the pressure test string or pump string is lowered, the thread sealant must be evenly applied to the tubing thread to prevent the string from leaking. At present, the application method of oil pipe thread sealant is very simple. Most of them use bamboo chips or wooden sticks to take an appropriate amount of thread sealant and apply it evenly on the inner thread of the oil pipe coupling. The existing method cannot formulate operating specifications, and cannot guarantee the uniformity of thread sealant application.

Contents of the invention

In order to solve the problem that the existing method cannot ensure that the thread sealant is applied evenly on the outside of the thread, the invention provides a thread sealant gun, which can drive the head of the sealant gun to rotate through the rotation of the handle, and at the same time push the piston to compress The thread sealant overflows from the sealant outlet of the gun head, so as to achieve the purpose of evenly spreading the sealant on the inner thread of the oil pipe coupling.

The technical solution adopted by the present invention to solve its technical problems is:

A thread sealant gun, comprising a gun body and a gun head, the gun head is arranged at one end of the gun body, the gun body contains a closed cavity for receiving the sealant, the gun head is provided with a sealant outlet, and the gun body also contains a A piston that squeezes the sealing grease in the closed cavity and discharges the sealing grease from the sealing grease outlet. The threaded sealing grease gun also includes a rotating grease-discharging drive part that can squeeze the closed cavity when the driving piston is driven. Rotate the gun head while removing the sealant in the cavity.

The gun body includes a gun barrel, the closed cavity is located in the gun barrel, the gun head is arranged outside one end of the gun barrel, and the piston is located in the other end of the gun barrel.

The rotating degreasing driving part includes a driving rod, which is sleeved in the gun barrel, and both ends of the driving rod are located outside the gun barrel. Outside the external thread section, the piston is threadedly engaged with the external thread section.

The gun barrel is also sleeved with a cylindrical sealing grease clip, and the other end of the gun barrel is provided with an annular protrusion. One end of the sealing grease clip corresponds to one end of the gun barrel, and the other end of the sealing grease clip corresponds to the The annular protrusion pushes against, and one end of the sealing grease magazine is provided with an annular stopper, and the closed cavity is located in the sealing grease magazine.

The inner diameter of the sealing grease clip is equal to the inner diameter of the annular protrusion, the outer diameter of the piston is equal to the inner diameter of the annular protrusion, the piston jacket is provided with a sealing ring, the outer diameter of the annular stopper is equal to the inner diameter of the sealing grease cartridge, and the annular stopper The inner diameter is larger than the outer diameter of the drive rod.

The other end of the gun barrel is provided with a lower end cover, which can close the other end of the gun barrel. The lower end cover is sleeved outside the driving rod. The inner diameter of the lower end cover is equal to the outer diameter of the driving rod. The handle used to turn the drive rod, the handle is located on the outside of the lower end cover, and the piston is located on the inside of the lower end cover.

The rotating fat-discharging driving part also includes a gun mount used to be connected with the gun head. The cylindrical gun mount is arranged outside one end of the gun barrel, and the gun mount is sleeved outside one end of the drive rod. The inner diameter of the gun mount is larger than that of the drive rod. The outer diameter, the gun seat is connected and fixed with the driving rod through the connecting piece, and the connecting piece is provided with an inner through hole connecting the two ends of the gun seat.

One end of the gun barrel is provided with a cylindrical bearing seat, the axis of the bearing seat coincides with the axis of the gun barrel, one end of the bearing seat is connected to one end of the gun barrel by threads, and the other end of the bearing seat is connected to one end of the gun seat through a bearing. An annular baffle is arranged in the bearing seat, the outer diameter of the annular baffle is equal to the inner diameter of the bearing seat, the inner diameter of the annular baffle is larger than the outer diameter of the driving rod, the annular baffle is located between the bearing and one end of the gun barrel, and the other end of the bearing seat is An upper end cover for covering the bearing is also provided outside one end.

The gun head contains a shell and a plug. The shell is cylindrical. A plurality of sealing grease outlets are evenly arranged along the outer peripheral wall of the shell. The sealing grease outlets are strips arranged along the axis of the shell. One end of the shell is connected to The rotating grease-discharging driving part is connected, and the plug is fixed at the other end of the casing, and the casing contains an inner flow channel communicating with the sealing grease outlet and the other end of the casing.

The gun head contains a shell and a plug. Both the shell and the plug are cylindrical. The shell is sleeved outside the plug. A number of sealing grease outlets are evenly arranged along the inner peripheral wall of the plug. The sealing grease outlet is along the plug. One end of the housing is connected to the rotating grease-discharging drive part, the other end of the housing is sealed and connected to one end of the plug, the other end of the plug is a closed structure, and there is a gap between the housing and the plug. The internal flow passage connecting the sealing grease outlet and one end of the housing.

The beneficial effects of the present invention are:

1. Solve the problem of uneven application of oil pipe thread sealant in downhole operations in oil fields;

2. Reduce the labor intensity of workers;

3. The structure is simple and practical.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

Figure 1 is an assembly drawing of the gun body.

Figure 2 is an enlarged view of the gun barrel.

Figure 3 is an assembly diagram of the first gun head.

Figure 4 is a thread sealant gun.

Fig. 5 is an exploded schematic diagram of the first type of gun head.

Fig. 6 is an assembly diagram of the second gun head.

Fig. 7 is an exploded schematic view of the second type of gun head.

Reference signs in the figure:

10. Gun body; 20. Gun head;

11. Gun seat; 12. Upper end cover; 13. Bearing; 14. Bearing seat; 15. Gun barrel; 16. Sealant cartridge; 17. Piston; 18. Sealing ring; 19. Lower end cover; 110. Drive rod; 111, closed cavity; 112, handle;

21. Plug; 22. Shell; 23. Sealing grease outlet;

141. Annular baffle;

161, an annular blocking piece.

detailed description

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

A thread sealing grease gun, comprising a gun body 10 and a gun head 20, the gun head 20 is arranged on one end of the gun body 10, the gun body 10 contains a closed cavity 111 for receiving the sealing grease, and the gun head 20 is provided with a sealing Grease outlet 23, the gun body 10 also contains a piston 17 that can squeeze the sealant in the closed cavity 111 and discharge the sealant from the sealant outlet 23, and the threaded sealant gun also includes a rotating grease discharge drive part, The rotating grease removal driving part can rotate the gun head 20 while the driving piston 17 squeezes the sealing grease in the closed cavity 111 , as shown in FIGS. 1 to 7 .

In this embodiment, as shown in Figures 1 and 2, the gun body 10 includes a gun barrel 15, the axis of the gun barrel 15 is arranged in a vertical direction, and the gun head 20 is arranged outside the upper end of the gun body 10, and the closed cavity 111 Located in the gun barrel 15 , the gun head 20 is arranged outside the upper end of the gun barrel 15 , and the piston 17 is located in the lower end of the gun barrel 15 . This rotating degreasing driving part comprises driving rod 110, and driving rod 110 is sleeved in the gun barrel 15, and the axis of driving rod 110 is also arranged along the vertical direction, and the upper and lower ends of driving rod 110 are all positioned at the outside of gun barrel 15, and the driving rod 110 110 contains an external thread section, which is located in the gun barrel 15, and the piston 17 is sleeved outside the external thread section. The piston 17 contains a threaded through hole, and the piston 17 is threadedly engaged with the external thread section. When the drive rod 110 rotates around the center line in Fig. 1, the viscous resistance of the paste sealant in the closed cavity 111 to the piston 17 will prevent the piston 17 from rotating with the drive rod 110, so the drive rod 110 will rotate The driving piston 17 reciprocates along the centerline direction in FIG. 1 . When the piston 17 moves from bottom to top in FIG. The grease exits 23, thereby coating the threaded surfaces. Or, in order to prevent the piston 17 from rotating with the drive rod 110, an anti-rotation part can also be set in the gun body 10, and the anti-rotation part can be a thin rod fixed relative to the gun barrel 15, and the thin rod is parallel to the drive rod 110. The rod is plugged into the piston 17 , that is, the piston 17 is sleeved on the thin rod, the axis of the driving rod 110 coincides with the axis of the piston 17 , and the thin rod deviates from the axis of the piston 17 .

In this embodiment, the barrel 15 is also sleeved with a cylindrical sealant clip 16, and the lower end of the barrel 15 is provided with an annular protrusion, and the position of the upper end of the sealant clip 16 and the upper end of the barrel 15 Correspondingly, the lower end of the sealing grease clip 16 abuts against the annular protrusion, and the upper end of the sealing grease clip 16 is provided with an annular baffle 161, the closed cavity 111 is located in the sealing grease clip 16, and the sealing grease clip 16 Used to hold sealing grease. The inner diameter of the sealing grease magazine 16 is equal to the inner diameter of the annular protrusion, the outer diameter of the piston 17 is equal to the inner diameter of the annular protrusion, the outer diameter of the piston 17 is provided with a sealing ring 18, and the outer diameter of the ring stopper 161 is equal to the sealing grease magazine 16 The inner diameter of the annular baffle 161 is greater than the outer diameter of the drive rod 110, and the sealant in the sealant cartridge 16 can be discharged from the gun barrel between the inner diameter of the annular baffle 161 and the outer diameter of the drive rod 110 after being pressed. 15.

In this embodiment, the lower end of the gun barrel 15 is provided with a lower end cap 19, the lower end cap 19 can close the lower end of the gun barrel 15, the lower end cap 19 is sleeved outside the driving rod 110, and the inner diameter of the lower end cap 19 is equal to the driving rod 110. The outer diameter of the rotating grease removal driving part also includes a handle 112 for rotating the driving rod 110, the handle 112 is located outside the lower end cover 19, and the piston 17 is located inside the lower end cover 19, as shown in Fig. 1 and Fig. 2 .

In this embodiment, the rotating grease removal drive part also includes a gun seat 11 for connecting with the gun head 20, the cylindrical gun seat 11 is arranged outside the upper end of the gun barrel 15, and the gun seat 11 is sleeved on the drive rod 110 Outside the upper end of the gun seat 11, the axis of the gun seat 11 coincides with the axis of the drive rod 110, the inner diameter of the gun seat 11 is greater than the outer diameter of the drive rod 110, an annular cavity is formed between the gun seat 11 and the drive rod 110, and the gun seat 11 passes through the connecting piece It is fixedly connected with the driving rod 110, and when the driving rod 110 rotates around the centerline in FIG. The connector is provided with internal through holes communicating with the two ends of the gun seat 11 , so that the sealing grease will be able to enter the gun head 20 through the inside of the gun seat 11 after being discharged from the gun barrel 15 .

In this embodiment, the upper end of the gun barrel 15 is provided with a cylindrical bearing seat 14, the axis of the bearing seat 14 coincides with the axis of the gun barrel 15, and the lower end of the bearing seat 14 and the upper end of the gun barrel 15 are fixed by threaded connection, as As shown in Fig. 1 and Fig. 2, the upper end of the bearing seat 14 is connected with the lower end of the gun seat 11 through the bearing 13, and the bearing seat 14 is provided with an annular baffle 141, and the outer diameter of the annular baffle 141 is equal to the inner diameter of the bearing seat 14. The inner diameter of baffle plate 141 is greater than the outer diameter of drive rod 110, and the inner diameter of annular baffle plate 141 is equal to the inner diameter of gun seat 11, and annular baffle plate 141 is positioned between bearing 13 and the upper end of gun barrel 15, and the upper end of bearing seat 14 is also An upper cover 12 for covering the bearing 13 is provided. The upper end cover 12 is annular, and the upper end cover 12 is sleeved outside the middle part of the gun seat 11, and the upper end cover 12 is connected and fixed with the upper end of the bearing seat 14.

In this embodiment, the gun head 20 includes a housing 22 and a plug 21, the housing 22 is cylindrical, and a plurality of sealing grease outlets 23 are evenly arranged in the circumferential direction of the outer peripheral wall of the housing 22, and the sealing grease outlets 23 are The strip shape arranged along the axial direction of the housing 22, the lower end of the housing 22 is screwed to the upper end of the gun barrel 15 of the rotating grease-discharging drive part, as shown in Figure 4, the plug 21 is fixed on the upper end of the housing 22 , the housing 22 contains an inner flow channel communicating with the sealant grease outlet 23 and the lower end of the housing 22, as shown in FIGS. 4 and 5 .

The gun head 20 shown in FIG. 3 , FIG. 4 and FIG. 5 is the first type of gun head, and the first type of gun head is used to apply sealing grease to the internal thread. When in use, first insert the gun head 20 into the oil pipe coupling or oil pipe joint that contains internal threads, the axis of the gun head 20 coincides with the axis of the oil pipe coupling or oil pipe joint, and the outer diameter of the shell 22 of the gun head 20 should be consistent with the axis of the oil pipe joint. The inner diameter of the oil pipe collar or the oil pipe joint is matched, and then the handle 112 and the driving rod 111 are rotated, and the gun seat 11 and the gun head 20 are rotated accordingly. The sealing grease overflows from the sealing grease outlet 23 of the gun head 20 . The gun barrel 15 does not move, and the driving rod 11 only needs to rotate 1/4 turn to 1/2 turn to finish the internal thread sealing grease smearing of a single oil pipe collar or oil pipe joint. Since the gun head 20 overflows the sealing grease while rotating, and the sealing grease outlets 23 are evenly distributed, it can ensure that the thread sealing grease is evenly applied to the internal thread surface of the oil pipe collar or the oil pipe joint. The first gun head can be of various specifications, that is, the housing 22 has a variety of different outer diameters, and the housing 22 is detachably connected (such as threaded) to the gun holder 11, so as to adapt to oil pipe collars or oil pipe joints of different specifications. .

In order to be able to apply sealing grease to the external thread, the application also provides a second gun head, the gun head 20 includes a housing 22 and a plug 21, the housing 22 and the plug 21 are both cylindrical, and the housing 22 is sleeved on the Outside the plug 21, a plurality of sealing grease outlets 23 are evenly arranged along the circumferential direction of the inner peripheral wall of the plug 21. The sealing grease outlets 23 are elongated along the axial direction of the plug 21. The lower end of the housing 22 is connected to the The upper end of the gun barrel 15 that rotates the grease-discharging drive part is threaded, the upper end of the housing 22 is sealed and connected with the upper end of the plug 21, and the lower end of the plug 21 is a closed structure (the plug 21 is a cylindrical shape with the lower end closed and the upper end open), There is an inner flow channel communicating between the sealing grease outlet 23 and the lower end of the housing 22 between the body 22 and the plug 21 .

During use, first insert the oil pipe containing the external thread into the plug 21 of the gun head 20, the axis of the gun head 20 coincides with the axis of the oil pipe, and the inner diameter of the plug 21 of the gun head 20 should match the outer diameter of the oil pipe. Then the handle 112 and the driving rod 111 are rotated, and the gun holder 11 and the gun head 20 rotate thereupon. overflow. The gun barrel 15 does not move, and the driving rod 11 only needs to rotate 1/4 turn to 1/2 turn to finish the external thread sealant application of a single oil pipe. Since the gun head 20 overflows the sealing grease while rotating, and the sealing grease outlets 23 are evenly distributed, it can ensure that the thread sealing grease is evenly applied to the surface of the external thread of the oil pipe. The second gun head can be of various specifications, that is, the plug 21 has a variety of different inner diameters, and the housing 22 is detachably connected (such as threaded) to the gun seat 11 to adapt to oil pipes of different specifications.

The above is only a specific embodiment of the present invention, and cannot limit the scope of the invention, so the replacement of its equivalent components, or the equivalent changes and modifications made according to the patent protection scope of the present invention, should still fall within the scope of this patent. category. In addition, the technical features and technical features, technical features and technical solutions, and technical solutions and technical solutions in the present invention can be used in free combination.

Claims (8)

1. a thread sealing grease gun, the thread sealing grease gun comprises a gun body (10) and a gun head (20), and the gun head (20) is arranged on an end of the gun body (10), and the gun body (10) contains There is a closed cavity (111) for bearing sealant, the gun head (20) is provided with a sealant outlet (23), and the gun body (10) also contains the sealant that can squeeze the sealant in the closed cavity (111) and A piston (17) that makes the sealing grease discharge from the sealing grease outlet (23), and the threaded sealing grease gun also includes a rotating grease-discharging driving part, which can squeeze the closed cavity when the driving piston (17) While this sealing grease in (111) makes gun head (20) rotate; Gun body (10) comprises gun barrel (15), and closed cavity (111) is positioned at gun barrel (15), and gun head (20) is arranged on the outside of an end of gun barrel (15), and piston (17) is positioned at gun barrel ( 15) inside the other end; This rotating degreasing driving part comprises driving rod (110), and driving rod (110) is sleeved in the gun barrel (15), and the two ends of driving rod (110) are all positioned at the outside of gun barrel (15), and driving rod (110) Contain external thread section, this external thread section is positioned at gun barrel (15), and piston (17) is sheathed outside this external thread section, and piston (17) and this external thread section thread fit, and the axis of drive rod (110) and The axes of the pistons (17) coincide. 2. thread sealing grease gun according to claim 1, is characterized in that, also is provided with cylindrical sealing grease magazine (16) in the gun barrel (15), is provided with in the other end of gun barrel (15). Annular protrusion, one end of the sealing grease clip (16) corresponds to one end of the gun barrel (15), and the other end of the sealing grease clip (16) abuts against the annular projection, and the sealing grease clip (16) An annular baffle (161) is provided at one end, and the closed cavity (111) is located in the sealant cartridge (16). 3. thread sealing grease gun according to claim 2, is characterized in that, the inner diameter of sealing grease clip (16) is equal to the inner diameter of this annular protrusion, and the outer diameter of piston (17) is equal to the inner diameter of this annular protrusion, The piston (17) is provided with a sealing ring (18), the outer diameter of the annular stopper (161) is equal to the inner diameter of the sealant cartridge (16), and the inner diameter of the annular stopper (161) is greater than the outer diameter of the drive rod (110) . 4. thread sealing grease gun according to claim 3, is characterized in that, the other end of gun barrel (15) is provided with lower end cover (19) outside, and lower end cover (19) can be the other end of gun barrel (15) Closed, the lower end cover (19) is sleeved outside the drive rod (110), the inner diameter of the lower end cover (19) is equal to the outer diameter of the drive rod (110), and the rotating grease removal drive part also includes a handle (112), the handle (112) is positioned at the outside of the lower end cap (19), and the piston (17) is positioned at the inboard of the lower end cap (19). 5. The thread sealing grease gun according to claim 1, characterized in that, the rotating grease removal drive part also includes a gun seat (11) for being connected with the gun head (20), and the cylindrical gun seat (11) Be arranged outside an end of gun barrel (15), gun seat (11) is sleeved outside an end of drive rod (110), and the internal diameter of gun seat (11) is greater than the outer diameter of drive rod (110), and gun seat (11) The connecting piece is connected and fixed with the driving rod (110), and the connecting piece is provided with internal through holes communicating with the two ends of the gun holder (11). 6. thread sealing grease gun according to claim 5, is characterized in that, one end of gun barrel (15) is provided with cylindrical bearing seat (14), and bearing seat (14) axis line and gun barrel (15) Axes coincide, and one end of bearing seat (14) is threadedly connected with an end of gun barrel (15), and the other end of bearing seat (14) is connected with one end of gun seat (11) by bearing (13), and bearing seat (14) An annular baffle (141) is provided inside, and the outer diameter of the annular baffle (141) is equal to the inner diameter of the bearing seat (14), and the inner diameter of the annular baffle (141) is greater than the outer diameter of the drive rod (110), and the annular baffle ( 141) is positioned between bearing (13) and an end of gun barrel (15), and the other end of bearing seat (14) is also provided with the upper end cover (12) that is used for sealing bearing (13). 7. The thread sealing grease gun according to claim 1, characterized in that the gun head (20) contains a housing (22) and a plug (21), the housing (22) is cylindrical, and a plurality of sealing grease outlets (23) are evenly arranged along the outer peripheral wall of the housing (22), the sealing grease outlet (23) is a bar shape arranged along the axial direction of the housing (22), and one end of the housing (22) is connected to the rotating grease discharge drive The components are connected, the plug (21) is fixed on the other end of the housing (22), and the housing (22) contains an inner flow channel communicating with the sealing grease outlet (23) and the other end of the housing (22). 8. The thread sealing grease gun according to claim 1, characterized in that, the gun head (20) contains a housing (22) and a plug (21), and the housing (22) and the plug (21) are both tubes shape, the housing (22) is sleeved outside the plug (21), and a plurality of sealing grease outlets (23) are evenly arranged along the inner peripheral wall of the plug (21), and the sealing grease outlets (23) are arranged along the plug (21) ), one end of the housing (22) is connected to the rotating grease-discharging drive part, the other end of the housing (22) is in sealing connection with one end of the plug (21), and the other end of the plug (21) One end is a closed structure, and there is an inner flow channel connecting the sealing grease outlet (23) and one end of the housing (22) between the housing (22) and the plug (21).