CN216589865U

CN216589865U - Breather valve for reduction gearbox of oil pumping unit and reduction gearbox of oil pumping unit

Info

Publication number: CN216589865U
Application number: CN202123311146.2U
Authority: CN
Inventors: 闫广; 贺焱; 刘黎明
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-05-24
Anticipated expiration: 2031-12-27

Abstract

A breather valve for a reduction gearbox of an oil pumping unit, namely a reduction gearbox for thickened oil, belongs to the technical field of oil gas drilling and production auxiliary equipment. The breather valve comprises a valve rod, a valve seat and a valve cap, wherein one end of the valve rod is communicated with a reduction gearbox of the pumping unit, the other end of the valve rod is communicated with the bottom of the valve seat, and a first channel is arranged in the valve rod; a second channel and a plurality of fourth channels communicated with the atmosphere are arranged in the valve seat, the openings of the fourth channels face downwards, the second channel is communicated with the first channel, a first silk screen is further arranged in the second channel, and a second silk screen is arranged in any one of the fourth channels; the valve cap with the connection can be dismantled to the disk seat, just the valve cap with form the third passageway between the disk seat, the second passageway the fourth passageway all with the third passageway intercommunication. Through setting up the second silk screen for the probability that outside rainwater got into in the beam-pumping unit reducing gear box is littleer, and the volume is still less, can prolong the life-span of lubricating oil, practices thrift the cost.

Description

Breather valve for reduction gearbox of oil pumping unit and reduction gearbox of oil pumping unit

Technical Field

The utility model relates to a beam-pumping unit reducing gear box technical field, concretely relates to beam-pumping unit reducing gear box of this breather valve is used promptly to breather valve for beam-pumping unit reducing gear box.

Background

The reduction gearbox is an important component of the oil pumping unit and is connected with the motor and the crank, and the rotation speed of the motor is reduced through the reduction gearbox, so that the crank moves at a proper speed. Generally, a breather valve communicating the interior of the reduction gearbox with the atmosphere is provided on the reduction gearbox so that the interior of the reduction gearbox can maintain normal working pressure. The breather valve commonly used on the oil field station directly sets up a valve rod and valve gap, is equipped with the breather hole simultaneously in valve rod and valve gap inside to make it can exert its function. But it has the problem that dust and rainwater easily get into the reducing gear box inside through the breathing hole, lead to the lubricating oil in the reducing gear box to deteriorate, the effect worsens.

Therefore, the prior art attempts to improve the above-mentioned structure, for example, chinese patent CN2091960814U discloses a breather valve for a reduction gearbox of a pumping unit and a reduction gearbox of a pumping unit, in which the opening of a breather hole communicated with the atmosphere is arranged downward, so that a large amount of rainwater can be prevented from entering the breather valve. However, in summer rainstorm and extra-heavy rainstorm, the pressure in the reduction gearbox suddenly drops, external air can enter the reduction gearbox, and meanwhile when the rain is too heavy, raindrops fall on the outer side wall of the breather valve, a small amount of rainwater still enters the reduction gearbox, and the maximum water content allowed by common lubricating oil is not more than 0.03%, so that the service life and the effect of the lubricating oil can be influenced even if a small amount of rainwater exists; meanwhile, the device does not consider the loss of lubricating oil when the reduction gearbox works under the high-temperature condition in summer.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims to provide a breather valve for beam-pumping unit reducing gear box, it is when reducing the interior lubricating oil loss of reducing gear box, can also reduce the entering of outside rainwater, reduces the working cost of reducing gear box.

The technical scheme provided by the utility model is that the breather valve for the reduction gearbox of the pumping unit comprises a valve rod, a valve seat and a valve cap, wherein one end of the valve rod is communicated with the reduction gearbox of the pumping unit, the other end of the valve rod is communicated with the bottom of the valve seat, and a first channel is arranged in the valve rod; a second channel and a plurality of fourth channels communicated with the atmosphere are arranged in the valve seat, the openings of the fourth channels face downwards, the second channel is communicated with the first channel, a first silk screen is further arranged in the second channel, and a second silk screen is arranged in any one of the fourth channels; the valve cap with the connection can be dismantled to the disk seat, just the valve cap with form the third passageway between the disk seat, the second passageway the fourth passageway all with the third passageway intercommunication.

The utility model discloses an embodiment lies in, second silk screen detachable set up in the fourth passageway, first silk screen fixed set up in the disk seat.

Preferably, the fourth channel is a variable diameter channel, and the upper size of the fourth channel is relatively large.

The utility model discloses an embodiment lies in, the valve cap with the disk seat adopts threaded connection, the fixed at least one piece that blocks that is equipped with of valve cap inside wall.

The utility model discloses an embodiment lies in, the fourth passageway winds second passageway evenly distributed all around.

Another object of the utility model is to provide a beam-pumping unit reducing gear box is equipped with foretell breather valve on this beam-pumping unit reducing gear box, and the life-span of the lubricating oil in this reducing gear box is longer, and it is lower relatively to move.

The utility model discloses the technical effect who plays is: by arranging the first silk screen, the waste of lubricating oil in the reduction gearbox of the oil pumping unit can be reduced, and the cost is saved; through setting up the second silk screen for the probability that outside rainwater got into in the beam-pumping unit reducing gear box is littleer, and the volume is still less, can prolong the life-span of lubricating oil, practices thrift the cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an enlarged structural diagram of a fourth channel.

In the figure, 1 is a valve stem, 2 is a valve seat, 3 is a valve cap, 4 is a stop, 5 is a first wire mesh, 6 is a first passage, 7 is a second wire mesh, 8 is a second passage, 9 is a third passage, and 10 is a fourth passage.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and accompanying drawings.

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

The high temperature resistant membrane of the utility model refers to a membrane material with a long-term working temperature of 232 ℃.

Example 1:

a breather valve for a reduction gearbox of an oil pumping unit comprises a valve rod 1, a valve seat 2 and a valve cap 3, wherein one end of the valve rod 1 is communicated with the reduction gearbox of the oil pumping unit, the other end of the valve rod 1 is communicated with the bottom of the valve seat 2, and a first channel 6 is arranged in the valve rod 1; a second channel 8 and a plurality of fourth channels 10 communicated with the atmosphere are arranged in the valve seat 2, the openings of the fourth channels 10 face downwards, the second channel 8 is communicated with the first channel 6, a first silk screen 5 is also arranged in the second channel 8, and a second silk screen 7 is arranged in any one of the fourth channels 10; the bonnet 3 with the connection can be dismantled to the valve seat 2, just the bonnet 3 with form third passageway 9 between the valve seat 2, second passageway 8 fourth passageway 10 all with third passageway 9 communicates.

Specifically, referring to fig. 1, the valve rod 1 is used for being connected with a reduction gearbox of the pumping unit, and the connection mode can be generally set as threaded connection, that is, an external thread is arranged on the valve rod 1, and a corresponding internal thread is arranged on the reduction gearbox of the pumping unit.

The valve seat 2 is fixedly connected with the end, which is not provided with threads, of the valve rod 1, the bonnet 3 is used for covering the end, which is far away from the valve rod 1, of the valve seat 2, and as for the bonnet 3, the structure of the bonnet is like a hat: the integral structure is a hollow cylinder or a hollow column body without a bottom surface.

In order to facilitate the communication between the reduction gearbox of the pumping unit and the atmosphere, a first channel 6 is arranged inside the valve rod 1, one end of the first channel 6 is communicated with the reduction gearbox of the pumping unit, and the other end of the first channel is communicated with a second channel 8 on the valve seat 2.

A second passage 8 and a plurality of fourth passages 10 are provided in the valve seat 2, wherein the second passage 8 communicates with the first passage 6, and one end of the fourth passages 10 communicates with the atmosphere. Generally speaking, in order to facilitate the communication between the second passage 8 and the first passage 6, and at the same time to facilitate the communication between the whole breathing valve and the atmosphere, it is preferable to arrange: the second channel 8 is provided in the centre of the valve seat 2 and the fourth channel 10 is provided at the edge of the valve seat 2.

Because the pumping unit is basically arranged in the field, particularly for some pumping units arranged in inland desert, the temperature is higher in summer and can reach 80 ℃ at most, and the temperature is higher due to the continuous operation of the reduction gearbox, the saturated vapor pressure of the lubricating oil in the reduction gearbox of the pumping unit is increased at the high temperature, and the loss of the lubricating oil is increased. Therefore, in the present embodiment, the first wire mesh 5 is disposed inside the second passage, the size of the first wire mesh 5 is the same as the size of the cross section of the second passage 8, and when the lubricant is evaporated, the vapor of the lubricant is intercepted by the first wire mesh 5, so that the loss of the lubricant can be reduced.

The bonnet 3 and the valve seat 2 are provided as a removable connection, typically a threaded or flanged connection, preferably threaded in view of cost and convenience, i.e.: the upper part of the valve seat 2 is provided with an external thread, and the inside of the valve cap 3 is provided with an internal thread.

In order to allow the first passage 6 to communicate with the atmosphere, a third passage 9 needs to be provided under the condition that the second passage 8 and the fourth passage 10 do not communicate with each other, and the third passage 9 needs to communicate with the second passage 8 and the fourth passage 10 at the same time. In the present embodiment, the third passage 10 is provided as a space between the bonnet 3 and the valve seat 2.

Under the condition that valve cap 3 and disk seat 2 adopt threaded connection, in order to make valve cap 3 and disk seat 2's connection more firm relatively, avoid disk seat 2 and valve cap 3's connection too closely simultaneously, make the space between valve cap 3 and the disk seat 2 very little or even disappear, this embodiment still is provided with two on the inside wall of valve cap 3 and blocks piece 4, through this block piece 4, can enough make valve cap 3 and disk seat 2 connect more firmly, can also make simultaneously and have certain circulation passageway between disk seat 2 and the valve cap 3.

The first channel 6, the second channel 8, the third channel 9 and the fourth channel 10 are arranged, so that the interior of the reduction gearbox of the pumping unit is communicated with the atmosphere. However, this arrangement does not completely prevent rainwater from entering the interior thereof, and therefore, in this embodiment, a second wire mesh 7 is provided inside each fourth channel 10, and in some extreme cases, even if rainwater passes through the fourth channel 10, the rainwater is blocked by the second wire mesh 7, so that it is difficult for rainwater to further enter the interior of the breather valve.

Through inventor's test, adopt the shower nozzle as simulation rain ware, the rainfall angle is about 10 ~ 15, when the simulation rainfall reaches the heavy rain rank (the rainfall reaches more than 50mm in 24 hours), sets up the size of fourth passageway and is 4mm, sets up 4 fourth passageways in total, lasts 24h after, demolishs the second silk screen in the fourth passageway, wipes dry whole breather valve surface and fourth passageway simultaneously, and whole weight increase is about 0.05 g. When the second screen in the fourth passage was not provided, the overall weight increase was about 0.2g under the same conditions. The embodiment can effectively prevent rainwater from entering the interior of the breather valve.

Referring to fig. 2, generally speaking, the second wire mesh 7 disposed in the fourth channel 10 needs to face not only the external rain water but also solid-phase particle impurities such as dust, sand, etc., especially in some desert and partition areas, after long-term use, the second wire mesh 7 is blocked to cause the gas guide to be not smooth, and at this time, the second wire mesh 7 needs to be taken out for replacement or cleaning, so the second wire mesh 7 needs to be designed to be detachable, and on the contrary, most of the lubricating oil droplets condensed on the first wire mesh 5 for the first wire mesh 5, if the lubricating oil droplets are replaced at regular time, part of the lubricating oil is lost, and therefore the lubricating oil is fixedly disposed. In the present embodiment, the fourth channel 10 is designed as a diameter-variable channel, and the upper portion of the fourth channel is relatively large in size, so that the second screen 7 can be placed from the upper portion of the fourth channel 10 when being filled.

When the breather valve is used, the first silk screen 5 is fixed, the second silk screen 7 is placed into the fourth channel 10, the valve cap 3 is installed, and then the whole breather valve is installed on a reduction gearbox of the oil pumping unit, so that the work can be started.

When the second mesh 7 is clogged with solid particles such as dust and gravel, the bonnet 3 is opened, and the second mesh 7 is taken out by a hook and replaced.

A reduction gearbox of an oil pumping unit is provided with the breather valve in the embodiment.

In the description of the present invention, it is to be noted that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and the terms "first", "second", and the like are merely for convenience of description and simplification of the description, but 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, and are not to be construed as limiting the present invention

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the embodiments of the present invention are all covered by the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A breather valve for a reduction gearbox of an oil pumping unit is characterized by comprising a valve rod, a valve seat and a valve cap, wherein one end of the valve rod is communicated with the reduction gearbox of the oil pumping unit, the other end of the valve rod is communicated with the bottom of the valve seat, and a first channel is arranged in the valve rod; a second channel and a plurality of fourth channels communicated with the atmosphere are arranged in the valve seat, the openings of the fourth channels face downwards, the second channel is communicated with the first channel, a first silk screen is further arranged in the second channel, and a second silk screen is arranged in any one of the fourth channels; the valve cap with the connection can be dismantled to the disk seat, just the valve cap with form the third passageway between the disk seat, the second passageway the fourth passageway all with the third passageway intercommunication.

2. The breather valve of claim 1, wherein the second wire mesh is removably disposed within the fourth passage and the first wire mesh is fixedly disposed within the valve seat.

3. The respiratory valve of claim 2, wherein the fourth passageway is a variable diameter passageway and has a relatively large upper dimension.

4. The breather valve according to claim 1, wherein the bonnet is threadably connected to the valve seat, and at least one stop is fixedly disposed on an inner sidewall of the bonnet.

5. The breather valve of claim 1, wherein the fourth passages are evenly distributed around the second passage.

6. A reduction gearbox of an oil pumping unit, which is characterized by comprising a breather valve as claimed in any one of claims 1-5.