CN217402250U - Automatic alarm device for oil well packing lubrication - Google Patents

Abstract

The utility model belongs to the technical field of oil gas development corollary equipment, especially, relate to an oil well packing lubrication automatic alarm device. This kind of lubricated autoalarm of oil well packing is through lasting providing lubrication to packing, polished rod to solve high friction, the high load between current packing and the polished rod and consume the problem, finally realize prolonging polished rod, packing life's purpose by a wide margin. An automatic alarm device for oil well packing lubrication comprises: an outer housing; the outer shell consists of an upper packing retaining head, a lower packing box pressing cap and a grease box; the upper packing retainer head is connected with the upper packing of the polish rod in a sealing way, and the lower packing box pressing cap is connected with the lower packing of the polish rod in a sealing way; the inner parts of the upper disk root retaining head and the lower disk root box pressing cap are communicated to form a lubricating inner cavity; a lubricating outer cavity is formed inside the lubricating grease box; the lubricating inner cavity is communicated with the lubricating outer cavity through an oil outlet; the lubricating inner cavity is also internally provided with a Glan head which is contacted with the polished rod of the oil well, and a plurality of seepage holes are uniformly distributed on the Glan head at equal intervals.

Description

Automatic alarm device for oil well packing lubrication

Technical Field

The invention belongs to the technical field of oil-gas development corollary equipment, and particularly relates to an automatic alarm device for oil well packing lubrication.

Background

The rod oil extraction is the most frequently used oil extraction production mode in the oil and gas development process, and accounts for 80 percent of the total oil extraction production. The polish rod packing is used as a dynamic sealing element for connecting the sealing packing box and an oil well in the polish rod movement process, and can cause abrasion due to eccentric wear or long-term friction with the polish rod after being used for a period of time, so that the polish rod is leaked, and oil gas in a shaft leaks out from the wellhead packing box. Especially for high water content and thick oil wells, the problem of untight or failure of packing seal is a long-standing old problem.

The existing means for dealing with the above problems is to perform treatment after leakage is found during well patrol, for example: maintenance measures such as screwing down a packing, replacing the packing and the like are adopted; however, the operation not only adds extra workload to the workers, but also causes a series of problems of increased packing consumption of the pumping unit, increased power consumption of the pumping unit, increased production cost, environmental pollution, waste and the like.

Disclosure of Invention

The invention provides an automatic alarm device for oil well packing lubrication, which continuously provides lubrication for a packing and a polished rod, so that the problems of high friction and high load loss between the conventional packing and the polished rod are solved, and the aims of greatly prolonging the service lives of the polished rod and the packing are finally fulfilled.

In order to solve the technical problems, the invention adopts the following technical scheme:

an automatic alarm device for oil well packing lubrication comprises:

an outer housing; the outer shell consists of an upper packing stopper, a lower packing pressing cap and a grease box; the upper packing retainer head is connected with the upper packing of the polish rod in a sealing way, and the lower packing box pressing cap is connected with the lower packing of the polish rod in a sealing way; the lubricating grease box consists of an outer cavity and an inner cavity; wherein a plurality of seepage holes are uniformly distributed on the interval between the outer cavity and the inner cavity; the inner cavity of the grease box is respectively communicated with the upper packing retaining head and the lower packing box pressing cap; the grease box is provided with an oil injection nozzle.

Preferably, the grease cartridge is further provided with a grease cartridge pressing cap.

Preferably, the inner cavity of the grease box is also internally provided with an internal spring matched with the polish rod.

Preferably, the method further comprises the following steps: an alarm circuit; the alarm circuit comprises an alarm control chip, a pressure change interface and a liquid level detection interface, wherein the pressure change interface and the liquid level detection interface are arranged on the lubricating grease box;

wherein, the alarm control chip selects a processor chip with the model of EFM32L, and is respectively communicated and interconnected with the pressure-variable interface and the liquid level detection interface.

Preferably, an upper lip-shaped sealing element is arranged in the upper disk root retaining head, one lip edge of the upper lip-shaped sealing element is contacted with the upper disk root, and the other lip edge of the upper lip-shaped sealing element is contacted with the inner side wall of the upper disk root retaining head;

and a lower lip-shaped sealing element is arranged in the lower packing box pressing cap, one lip edge of the lower lip-shaped sealing element is contacted with the lower packing, and the other lip edge of the lower lip-shaped sealing element is contacted with the inner side wall of the lower packing box pressing cap.

The invention provides an automatic alarm device for oil well packing lubrication, which comprises an upper packing retaining head, a lower packing box pressing cap, a grease box and other structural units. The automatic alarm device for oil well packing lubrication with the structural characteristics at least has the following characteristics:

1. the problem of friction load of a polished rod on a sealing packing during the operation of a heavy oil well and a high water-cut well is solved.

2. The problem of the packing that punctures because of high temperature causes is solved, the life of packing can be improved by a wide margin.

3. The device has the functions of leakage detection and alarm.

4. The packing device is adaptable to different wellhead models and has unified packing operation rules.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the following drawings:

FIG. 1 is a schematic structural diagram of an automatic alarm device for oil well packing lubrication according to the present invention;

FIG. 2 is a schematic diagram of the electrical connection of the alarm control chip, the pressure-variable interface and the liquid level detection interface in the present invention;

reference numerals are as follows: 1. an upper disc root stop head; 2. pressing a cap on the lower packing box; 3. a grease cartridge (lubricated outer chamber); 4. lubricating the inner cavity; 5. an oil outlet; 6. an oil injection nozzle; 7. a voltage-variable interface; 8. infiltrating holes; 9. a glan head; 10. the grease box presses the cap.

Detailed Description

The invention provides an automatic alarm device for oil well packing lubrication, which continuously provides lubrication for a packing and a polished rod, so that the problems of high friction and high load loss between the conventional packing and the polished rod are solved, and the aims of greatly prolonging the service lives of the polished rod and the packing are finally fulfilled.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention provides an automatic alarm device for oil well packing lubrication, which comprises an outer shell as shown in figure 1. The outer shell is composed of an upper packing retaining head, a lower packing box pressing cap and a grease box; wherein, the upper packing root stopper is connected with the upper packing root of the polish rod in a sealing way, and the lower packing root box pressing cap is connected with the lower packing root of the polish rod in a sealing way. As a preferred embodiment of the present invention, an upper lip-shaped sealing element is disposed in the upper packing retainer head, and a lower lip-shaped sealing element is disposed in the lower packing box pressing cap; wherein, the upper lip-shaped sealing element and the lower lip-shaped sealing element are used for playing a sealing role; one lip edge of the upper lip-shaped sealing element is contacted with the upper disk root, and the other lip edge of the upper lip-shaped sealing element is contacted with the inner side wall of the upper disk root retaining head; one lip edge of the lower lip-shaped sealing element is contacted with the lower disk root, and the other lip edge of the lower lip-shaped sealing element is contacted with the inner side wall of the lower disk root box pressing cap.

As shown in fig. 1, the inner parts of the upper packing retaining head and the lower packing box pressing cap are communicated with each other to form a lubricating inner cavity; the inside of the grease box forms a lubricating outer cavity. The lubricating inner cavity is communicated with the lubricating outer cavity through an oil outlet. The purpose of separating the outer and inner lubricating cavities is to control the rate of grease supply (by controlling the size of the oil outlet) and to prevent excessive grease from clogging the well polish rod. And a Glan head which is contacted with the polish rod of the oil well is also arranged in the lubricating inner cavity, and a plurality of seepage holes are uniformly distributed on the Glan head at equal intervals (an internal spring which is matched with the polish rod is also arranged in the Glan head). The seepage hole is used for coating lubricating grease flowing into the lubricating cavity on the polished rod in the reciprocating motion process of the polished rod, and the purpose of lubricating the polished rod (and the upper packing and the lower packing) is achieved.

Furthermore, as the utility model discloses a comparatively preferred embodiment, still install oil filler point and grease box pressure cap on the grease box. Wherein, this oil filler point is used for filling lubricating grease to the lubricating grease box. And the lubricating grease box pressing cap is used for pressing the lubricating grease box to prevent the lubricating grease box from loosening during reciprocating motion.

Finally, it should be added that, as a preferred embodiment of the automatic alarm device for oil well packing lubrication of the present invention, the automatic alarm device for oil well packing lubrication further includes an alarm circuit. As shown in figure 2, the alarm circuit comprises an alarm control chip, a pressure-variable interface and a liquid level detection interface which are arranged on the lubricating grease box. Wherein, the alarm control chip selects a processor chip with the model of EFM32L, and is respectively communicated and interconnected with the pressure-variable interface and the liquid level detection interface. It should be noted that the processor chip of the EFM32L model belongs to an industrial grade low power consumption core processor, the core size is 10 x 10 x 1.05mm, the operation speed is 48MHz, an (8 x12 bit) analog-to-digital converter is arranged in a matching manner, and the working temperature range is-40 ℃ to 85 ℃.

And the parameters of the voltage-variable interface can be referred to as follows: non-linearity: less than or equal to +/-0.05% FS, repeatability: less than or equal to +/-0.02 percent of FS and hysteresis: less than or equal to +/-0.02 percent of FS, long-term stability: 0.1% FS/year, working temperature range: -40 to 125 ℃, power supply: 2.0mADC or less, input impedance: 2k Ω to 8k Ω, output impedance: 3.5-6 k omega, response time (10-90%): <1ms, insulation resistance: 100M Ω,100 VDC.

The pressure change interface can be used for monitoring the pressure change in the lubricating grease box, so that an alarm is given for accidents caused by the leakage (sudden pressure drop) of the packing; and the liquid level detection interface is used for monitoring the residual quantity of the lubricating grease in the lubricating grease box, so that the lubricating grease can be reminded before being used up.

The invention provides an automatic alarm device for oil well packing lubrication, which comprises structural units such as an upper packing retaining head, a lower packing box pressing cap and a grease box. The automatic alarm device for oil well packing lubrication with the structural characteristics at least has the following characteristics:

1. the problem of friction load of a polished rod on a sealing packing during the operation of a heavy oil well and a high water-cut well is solved.

2. The problem of the packing that causes because of high temperature thorn hourglass is solved, can increase substantially the life of packing.

3. The device has the functions of leakage detection and alarm.

4. The packing device is adaptable to different wellhead models and has unified packing operation rules.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (5)

1. The utility model provides an lubricated autoalarm of oil well packing which characterized in that, including:

an outer housing; the outer shell consists of an upper packing stopper, a lower packing pressing cap and a grease box; wherein, the upper packing root stopper is connected with the upper packing root of the polished rod in a sealing way, and the lower packing root box pressing cap is connected with the lower packing root of the polished rod in a sealing way; the inner parts of the upper disk root retaining head and the lower disk root box pressing cap are communicated to form a lubricating inner cavity; a lubricating outer cavity is formed inside the lubricating grease box; the lubricating inner cavity is communicated with the lubricating outer cavity through an oil outlet;

the lubricating inner cavity is also provided with a gland head which is contacted with the polish rod of the oil well, and a plurality of seepage holes are uniformly distributed on the gland head at equal intervals.

2. The automatic alarm device for oil well packing lubrication according to claim 1, wherein the grease box is further provided with an oil nozzle and a grease box pressing cap.

3. The automatic alarm device for oil well packing lubrication according to claim 1, wherein the gland head is further internally provided with an internal spring matched with the polish rod.

4. The automatic alarm device for oil well packing lubrication according to claim 1, further comprising: an alarm circuit; the alarm circuit comprises an alarm control chip, a pressure change interface and a liquid level detection interface, wherein the pressure change interface and the liquid level detection interface are arranged on the lubricating grease box;

wherein, the alarm control chip selects a processor chip with the model of EFM32L, and is respectively communicated and interconnected with the pressure-variable interface and the liquid level detection interface.

5. The automatic alarm device for oil well packing lubrication according to claim 1, characterized in that an upper lip-shaped seal is arranged in the upper disc root retaining head, one lip edge of the upper lip-shaped seal is contacted with the upper disc root, and the other lip edge of the upper lip-shaped seal is contacted with the inner side wall of the upper disc root retaining head;

and a lower lip-shaped sealing element is arranged in the lower packing box pressing cap, one lip edge of the lower lip-shaped sealing element is contacted with the lower packing, and the other lip edge of the lower lip-shaped sealing element is contacted with the inner side wall of the lower packing box pressing cap.

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