CN211851744U - Packing box gland and packing box - Google Patents

Abstract

The utility model discloses a packing box gland and a packing box, which belong to the field of oil exploitation. The packing box gland (00) comprises: a gland body (10), a sleeve (20), a pressing plate assembly (30), a first box body (40) and a second box body (50). Since the first box body (40) contains the corrosion inhibitor, and the first box body (40) is communicated with the sleeve (20), the corrosion inhibitor in the first box body (40) can flow into the sleeve (40). 20), make the corrosion inhibitor contact with the polished rod (01) in the pumping unit, the corrosion inhibitor can effectively slow down the corrosion of the polished rod (01) in the pumping unit, and prolong the service life of the polished rod (01). At the same time, the second box body (50) contains lubricating oil, so the lubricating oil in the second box body (50) can also flow into the sleeve (20), so that the surface of the polished rod (01) is not easily damaged, Thus, the service life of the polished rod (01) is prolonged.

Description

Packing box gland and packing box

technical field

The utility model relates to the field of petroleum exploitation, in particular to a packing box gland and a packing box.

Background technique

The packing box is a device that uses its internal packing to seal the polished rod in the pumping unit, and plays the role of sealing the annular space between the oil pipe and the polished rod in the pumping unit during the oil well production process.

In the related art, a packing box may include: a packing, a packing box body and a packing box gland disposed above the packing box body, the packing box body has a sealing cavity inside, and the sealing cavity is filled with a sealing chamber. Packing, used to achieve the sealing effect of the packing box.

At present, during the use of the packing box, lubricating oil can be injected into the packing box to prevent the friction between the gland of the packing box and the polished rod in the pumping unit from being large, resulting in a higher probability of damage to the polished rod. big. However, at present, the function of the packing box is relatively simple.

Utility model content

The embodiment of the utility model provides a packing box gland and a packing box. The problem that the function of the packing box in the prior art is relatively single can be solved, and the technical solution is as follows:

In a first aspect, a packing box gland is provided, including:

gland body;

a sleeve connected with the gland body at one end;

a pressure plate assembly connected with the end of the sleeve away from the gland body;

and, a first box body and a second box body that are fixedly connected to the side wall of the sleeve and communicated with the sleeve, wherein the first box body is configured to accommodate a liquid corrosion inhibitor, so The second case is configured to accommodate lubricating oil.

Optionally, the first box body includes: a first box body body and a first connecting pipe, the first end of the first connecting pipe is fixedly connected to the end face of the first end of the first box body body and is In communication with the first box body, the second end of the first connecting pipe is fixedly connected with the side wall of the sleeve and communicated with the sleeve.

Optionally, the first box body further includes: a box body end cover, and the box body end cover is detachably connected to the second end of the first box body body.

Optionally, the first box body has a plurality of connecting rods that are fixedly connected to the end face of the first end of the first box body, and the plurality of connecting rods are located on the first box body. Inside, the length directions of the plurality of connecting rods are all parallel to the height direction of the first box body, and the length of each of the connecting rods is greater than the height of the first box body;

The box body end cover has a plurality of connecting holes that are sleeved with the plurality of connecting rods in a one-to-one correspondence.

Optionally, the first box body further includes: a second connecting pipe, the first end of the second connecting pipe is fixedly connected with the end face of the second end of the first box body and is connected with the first box The body is communicated with each other, and the end face of the second end of the second connecting pipe has an opening.

Optionally, the opening of the end surface of the second end of the second connecting pipe faces the second end of the first box body and is parallel to the end surface of the second end of the first box body.

Optionally, the pressure plate assembly includes: a circular plate-shaped first pressure plate and a second pressure plate, the diameter of the first pressure plate is smaller than the diameter of the second pressure plate, and the first pressure plate is opposite to the second pressure plate. the pressing plate is close to the gland body;

One end of the sleeve away from the gland body has a first stepped structure connected with the first pressing plate and a second stepped structure connected with the second pressing plate.

Optionally, the sleeve further has a first space between the first pressing plate and the gland body, and a second space between the first pressing plate and the second pressing plate;

The first box body communicates with the first space, and the second box body communicates with the second space.

Optionally, the pressure plate assembly further includes: a first sealing sheet located between the first pressure plate and the first stepped structure, and a first sealing sheet located between the second pressure plate and the second stepped structure. Two sealing sheets.

In a second aspect, a packing box is provided, comprising: a packing box body, a packing box gland connected to the packing box body, and a packing located in the packing box body, the disk The root box gland is the packing box gland described in any one of the first aspect.

The beneficial effects brought by the technical solutions provided by the embodiments of the present utility model are:

The packing box gland includes: a gland body, a sleeve, a pressing plate assembly, a first box body and a second box body. Since the first box body contains liquid corrosion inhibitor, and the first box body is communicated with the sleeve, the corrosion inhibitor in the first box can flow into the sleeve, so that the corrosion inhibitor and the The corrosion inhibitor can effectively slow down the corrosion of the polished rod in the pumping unit and prolong the service life of the polished rod; at the same time, the second box body contains lubricating oil, and the second box body is also communicated with the sleeve , therefore, the lubricating oil in the second box can also flow into the sleeve, so that the lubricating oil is in contact with the polished rod in the pumping unit, and the lubricating oil can effectively reduce the friction between the polished rod and the packing box gland. Therefore, the surface of the polished rod is not easily damaged, thereby prolonging the service life of the polished rod. When the packing box gland is installed in the packing box, the functions of the packing box are effectively enriched.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the drawings in the following description are only some implementations of the present invention. For example, for those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is a scene schematic diagram of a packing box gland provided by an embodiment of the present invention in use;

Fig. 2 is the scene schematic diagram of another packing box gland provided by the embodiment of the present invention in use;

3 is a schematic structural diagram of a first pressing plate provided by an embodiment of the present invention;

4 is a schematic structural diagram of a second pressing plate provided by an embodiment of the present invention;

5 is a cross-sectional view of a sleeve provided by an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present utility model more clear, the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings.

The embodiment of the present invention provides a packing box gland, and the packing box gland is used to slow down the corrosion of the polished rod in the oil pumping unit. Referring to FIG. 1 , FIG. 1 is a schematic diagram of a scene when a packing box gland provided by an embodiment of the present invention is in use. When the packing box gland 00 is in use, the packing box gland 00 can be sleeved outside the polished rod 01, and the packing box gland 00 can include: a gland body 10, a sleeve 20, a pressure plate assembly 30, a first The box body 40 and the second box body 50 .

The gland body 10 is connected with one end of the sleeve 20 .

The pressing plate assembly 30 is connected with the end of the sleeve 20 away from the pressing cover body 10 .

Both the first box body 40 and the second box body 50 are fixedly connected to the side wall of the sleeve 20 and communicate with the sleeve 20 , wherein the first box body 40 is configured to accommodate liquid corrosion inhibitor, and the second box body 40 is configured to accommodate liquid corrosion inhibitors. Body 50 is configured to contain lubricating oil. Exemplarily, the corrosion inhibitor can be a mixture, and the mixture can be composed of alkynyloxymethylamine, imidazoline derivative, emulsifying dispersant and water, wherein the content of alkynyloxymethylamine is 10% to 15% The content of imidazoline derivatives is 30% to 45%; the content of emulsifying dispersant is 5% to 10%; the content of water is 30% to 50%. The lubricating oil may be butter.

When the packing box gland shown in FIG. 1 needs to be used, first, the operator needs to install the packing box gland 00 on the packing box body; then, the operator can pour the liquid corrosion inhibitor into the disk into the first box body 40 in the root box gland 00; after that, the operator can pour lubricating oil into the second box body 50 in the packing box gland 00; finally, the operator can start the oil pump to Make the polished rod 01 reciprocate up and down relative to the packing box cover 00 .

To sum up, the packing box gland provided by the embodiment of the present invention includes: a gland body, a sleeve, a pressure plate assembly, a first box body and a second box body. Since the first box body contains liquid corrosion inhibitor, and the first box body is communicated with the sleeve, the corrosion inhibitor in the first box can flow into the sleeve, so that the corrosion inhibitor and the The corrosion inhibitor can effectively slow down the corrosion of the polished rod in the pumping unit and prolong the service life of the polished rod; at the same time, the second box body contains lubricating oil, and the second box body is also communicated with the sleeve, so , the lubricating oil in the second box can also flow into the sleeve, so that the lubricating oil is in contact with the polished rod in the pumping unit. The lubricating oil can effectively reduce the friction between the polished rod and the packing box gland, so that the The surface of the polished rod is not easily damaged, thereby extending the service life of the polished rod. When the packing box gland is installed in the packing box, the functions of the packing box are effectively enriched.

In the embodiment of the present invention, referring to FIG. 2 , FIG. 2 is a schematic diagram of another packing box gland provided in the embodiment of the present invention in use. The first box body 40 may include: a first box body 401 and a first connecting pipe 402, the first end of the first connecting pipe 402 is fixedly connected to the end face of the first end of the first box body 401 and is connected to the first The box body 401 is in communication, and the second end of the first connecting pipe 402 is fixedly connected to the side wall of the sleeve 20 and communicated with the sleeve 20 . For example, the extension shape of the first connecting pipe 402 is L-shaped, so that when the liquid corrosion inhibitor is poured into the first box body 401, the corrosion inhibitor can flow into the sleeve through the first connecting pipe 402 20 , so that the corrosion inhibitor is in contact with the surface of the polished rod 01 located in the sleeve 20 , thereby slowing down the corrosion of the polished rod 01 .

Optionally, referring to FIG. 2 , the first box body 40 may further include: a box body end cover 403 , the box body end cover 403 is detachably connected to the second end of the first box body body 401 , and the box body end cover 403 is detachably connected to the second end of the first box body body 401 . When connected with the second end of the first box body 401 , the box end cover is buckled on the second end of the first box body 401 to realize the sealing of the first box body 401 . In this way, when the corrosion inhibitor needs to be added, it is only necessary to open the end cover 403 of the box body, then pour the corrosion inhibitor to be added into the first box body 401, and then close the end cover 403 of the box body, and the corrosion inhibition is completed. Addition of drugs.

In the embodiment of the present invention, referring to FIG. 2 , the first box body 401 has a plurality of connecting rods 401 a that are fixedly connected with the end face of the first end of the first box body 401 , and the plurality of connecting rods 401 a are located in the In the first box body 401, the length directions of the plurality of connecting rods 401a are all parallel to the height direction (that is, the thickness direction) of the first box body 401, and the length of each connecting rod 401a is greater than that of the first box body. 401 height. The box body end cover 403 has a plurality of connecting holes (not shown in FIG. 2 ) that are sleeved with the plurality of connecting rods 401a in one-to-one correspondence. Exemplarily, the plurality of connecting rods 401a may be two connecting rods 401a, that is, the plurality of connecting holes may also be two connecting holes. The two connecting rods 401a are connected to the two connecting holes in a one-to-one correspondence, thereby improving the firmness of the connection between the box end cover 403 and the first box body 401, and also facilitating the connection between the box end cover 403 and the first box body 401. Separation of the body body 401 .

Optionally, referring to FIG. 2 , the first box body 40 may further include: a second connecting pipe 404 , the first end of the second connecting pipe 404 is fixedly connected with the end face of the second end of the first box body 401 and is connected with the first end of the second connecting pipe 404 . A box body 401 communicates with each other, and the end face of the second end of the second connecting pipe 404 has an opening. Since the polished rod 01 has been reciprocating up and down relative to the packing box gland 00, the heat generated by friction during the up and down reciprocating motion will cause the temperature in the packing box gland 00 to be higher, so the second connecting pipe that communicates with the outside world 404 can reduce the temperature in the packing box gland 00, so that the anti-corrosion effect of the corrosion inhibitor is better.

In the embodiment of the present invention, referring to FIG. 2 , the opening of the end face of the second end of the second connecting pipe 404 faces the second end of the first box body 401 and is parallel to the end face of the second end of the first box body 401 . That is, the opening of the end face of the second end of the second connecting pipe 404 faces the ground. In rainy and snowy weather, it can effectively prevent rain and snow from entering the first box body 401 through the second connecting pipe 404 . Exemplarily, the second connecting pipe 404 may include: a straight pipe 404a having one end fixedly connected to the box body end cover 403, a U-shaped pipe 404b having one end fixedly connected to the other end of the straight pipe 404a, and the other end of the U-shaped pipe 404b The opening of the end face faces the box body end cover 403 and is parallel to the end face of the box body end cover 403 .

Optionally, see FIG. 2 , FIG. 3 and FIG. 4 , FIG. 3 is a schematic structural diagram of a first pressure plate provided by an embodiment of the present invention, and FIG. 4 is a structure of a second pressure plate provided by an embodiment of the present invention. Schematic. For example, the first pressing plate 301 and the second pressing plate 302 have the same shape and different sizes. The pressing plate assembly 30 may include: a circular plate-shaped first pressing plate 301 and a second pressing plate 302 , the diameter of the first pressing plate 301 is smaller than that of the second pressing plate 302 , and the first pressing plate 301 is close to the pressing cover relative to the second pressing plate 302 body 10 . Referring to FIG. 5, FIG. 5 is a cross-sectional view of a sleeve provided by an embodiment of the present invention. One end of the sleeve 20 away from the gland body 10 has a first stepped structure 201 connected with the first pressing plate 301 and a second stepped structure 202 connected with the second pressing plate 302 . The shape and size of the first stepped structure 201 are matched with the first pressing plate 301 , and the shape and size of the second stepped structure 202 are also matched with the second pressing plate 302 , wherein the first stepped structure 201 is far away from the sleeve 20 The ratio of the distance between one end of the gland body 10 and the height of the sleeve 20 is 1:3;

It should be noted that the first pressing plate 301 has a plurality of first threaded holes 301a, and the plurality of first threaded holes 301a are evenly distributed around the axis of the first pressing plate 301; the second pressing plate 302 has a plurality of second threaded holes 302a , the plurality of second threaded holes 302a are evenly distributed around the axis of the second pressing plate 302; The axis lines of the shape enclosed by the second step structure 202 are evenly distributed; the second step structure 202 has a plurality of fourth threaded holes 202a, and the plurality of fourth thread holes 202a are evenly distributed around the axis line of the shape enclosed by the second step structure 202 . Moreover, the plurality of first threaded holes 301a are in one-to-one correspondence with the plurality of third threaded holes 201a, and the plurality of second threaded holes 302a are in one-to-one correspondence with the plurality of fourth threaded holes 202a. The pressing plate assembly 30 may further include: a plurality of first screws 303 and a plurality of second screws 304, the plurality of first screws 303 are in one-to-one correspondence with the plurality of first threaded holes 301a, and the plurality of second screws 304 are connected with the plurality of first screws 301a. The second threaded holes 302a are in one-to-one correspondence. When it is necessary to connect the first pressing plate 301 with the first stepped structure 201 , it is only necessary to pass each first screw 303 through the first threaded hole 301 a on the first pressing plate 301 and the third thread on the first stepped structure 201 in sequence. The hole 201a is sufficient. When the second pressing plate 302 needs to be connected to the second stepped structure 202 , each second screw 304 only needs to pass through the second threaded hole 302 a on the second pressing plate 302 and the fourth thread on the second stepped structure 202 in sequence. The hole 202a is sufficient.

In the embodiment of the present invention, referring to FIG. 2 , the sleeve 20 further has a first space 20 located between the first pressing plate 301 and the gland body 10 , and a first space 20 located between the first pressing plate 301 and the second pressing plate 302 . 2. Space 204. The first box body 40 communicates with the first space 203 , and the second box body 50 communicates with the second space 204 . In this way, the corrosion inhibitor in the first box 40 can flow into the first space 203, the lubricating oil in the second box 50 can flow into the second space 204, and the surface of the polished rod 01 in the first space 203 can be soaked in the first space 203. In the corrosion inhibitor in the first space 203, the effect of slowing down the surface corrosion of the polished rod 01 is achieved, and the lubricating oil flowing into the second space 204 can lubricate the contact surface of the polished rod 01 and the first pressing plate 301, and can also lubricate the polished rod 01 and the surface of the first pressure plate 301. The surface contacted by the second pressing plate 302 is lubricated, so that the surface of the polished rod 01 is not easily damaged, thereby prolonging the service life of the polished rod 01 .

Optionally, referring to FIG. 2 , the pressure plate assembly 30 may further include: a first sealing sheet 305 located between the first pressure plate 301 and the first stepped structure 201 , and a first sealing sheet 305 located between the second pressure plate 302 and the second stepped structure 202 . The second sealing sheet 306 . For example, the material of the first sealing sheet 305 and the second sealing sheet 306 may be silica gel. The first sealing sheet 305 can improve the airtightness between the first space 203 and the second space 204, and the second sealing sheet 306 can improve the airtightness between the pressing plate assembly 30 and the outside, thereby improving the packing box gland 00 tightness.

It should be noted that, referring to FIG. 2 , FIG. 3 and FIG. 4 , the first pressing plate 301 and the second pressing plate 302 may be of circular truncated structure. The first sealing sheet 305 of the ring structure can be sleeved on the boss of the first pressing plate 301, and then the first pressing plate 301 is connected to the first stepped structure 201, so that the first pressing plate 301 and the first stepped structure 201 are connected. Under the action, the first sealing sheet 305 is fixed between the first pressing plate 301 and the first stepped structure 201 . The second sealing sheet 306 of the annular structure can be sleeved on the boss of the second pressing plate 302, and then the second pressing plate 302 is connected to the second stepped structure 202, so that the second pressing plate 302 and the second stepped structure 202 are connected. Under the action, the second sealing sheet 306 is fixed between the second pressing plate 302 and the second stepped structure 202 .

It should be noted that, in the packing box gland 00 shown in FIG. 1 and FIG. 2 , the opening on the side wall of the sleeve 20 is for the purpose of seeing the internal structure of the sleeve 20 more clearly. The first box body 401 In order to see the internal structure of the first box body 401 more clearly, in actual use, neither the sleeve 20 nor the side wall of the first box body 401 is provided with an opening.

To sum up, the packing box gland provided by the embodiment of the present invention includes: a gland body, a sleeve, a pressure plate assembly, a first box body and a second box body. Since the first box body contains liquid corrosion inhibitor, and the first box body is communicated with the sleeve, the corrosion inhibitor in the first box can flow into the sleeve, so that the corrosion inhibitor and the The corrosion inhibitor can effectively slow down the corrosion of the polished rod in the pumping unit and prolong the service life of the polished rod; at the same time, the second box body contains lubricating oil, and the second box body is also communicated with the sleeve , therefore, the lubricating oil in the second box can also flow into the sleeve, so that the lubricating oil is in contact with the polished rod in the pumping unit, and the lubricating oil can effectively reduce the friction between the polished rod and the packing box gland. Therefore, the surface of the polished rod is not easily damaged, thereby prolonging the service life of the polished rod. When the packing box gland is installed in the packing box, the functions of the packing box are effectively enriched.

The embodiment of the present invention also provides a packing box, the packing box may include: a packing box body, a packing box gland connected with the packing box body, and a packing located in the packing box body, The packing box gland can be the packing box gland 00 shown in FIG. 1 or FIG. 2 .

When the packing box needs to be installed in the pumping unit, first, the operator needs to put the packing into the packing box body, and install the packing box gland on the packing box body; then, the operator needs to The liquid corrosion inhibitor can be poured into the first box in the packing box gland; after that, the operator can pour lubricating oil into the second box in the packing box gland; finally, the operator can start pumping. oil machine, so that the polished rod reciprocates up and down relative to the packing box.

To sum up, in the packing box provided by the embodiment of the present invention, the packing box gland in the packing box includes: a gland body, a sleeve, a pressing plate assembly, a first box body and a second box body. Since the first box body contains liquid corrosion inhibitor, and the first box body is communicated with the sleeve, the corrosion inhibitor in the first box can flow into the sleeve, so that the corrosion inhibitor and the The corrosion inhibitor can effectively slow down the corrosion of the polished rod in the pumping unit and prolong the service life of the polished rod; at the same time, the second box body contains lubricating oil, and the second box body is also communicated with the sleeve , therefore, the lubricating oil in the second box can also flow into the sleeve, so that the lubricating oil is in contact with the polished rod in the pumping unit, and the lubricating oil can effectively reduce the friction between the polished rod and the packing box gland. Therefore, the surface of the polished rod is not easily damaged, thereby prolonging the service life of the polished rod. It effectively enriches the functions of the packing box.

In this application, the terms "first" and "second" are used for descriptive purposes only, and should not be construed to indicate or imply relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise.

The above are only optional embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the within the scope of protection of the present invention.

Claims (10)

1. A packing box gland, comprising:

a gland body (10);

a sleeve (20) with one end connected with the gland body (10);

the pressing plate assembly (30) is connected with one end of the sleeve (20) far away from the gland body (10);

and a first box body (40) and a second box body (50) which are fixedly connected with the side wall of the sleeve (20) and communicated with the sleeve (20), wherein the first box body (40) is configured to contain a liquid corrosion inhibition medicament, and the second box body (50) is configured to contain lubricating oil.

2. The packing box gland according to claim 1,

the first case (40) includes: the box body comprises a first box body (401) and a first connecting pipe (402), wherein the first end of the first connecting pipe (402) is fixedly connected with the end face of the first end of the first box body (401) and communicated with the first box body (401), and the second end of the first connecting pipe (402) is fixedly connected with the side wall of the sleeve (20) and communicated with the sleeve (20).

3. The packing box gland according to claim 2,

the first container (40) further comprises: a cartridge end cap (403), the cartridge end cap (403) being removably connected to the second end of the first cartridge body (401).

4. The packing box gland according to claim 3,

the first box body (401) is provided with a plurality of connecting rods (401a) fixedly connected with the end face of the first end of the first box body (401), the connecting rods (401a) are all located in the first box body (401), the length directions of the connecting rods (401a) are all parallel to the height direction of the first box body (401), and the length of each connecting rod (401a) is greater than the height of the first box body (401);

the box body end cover (403) is provided with a plurality of connecting holes which are sleeved with the connecting rods (401a) in a one-to-one correspondence mode.

5. The packing box gland according to claim 2,

the first container (40) further comprises: the first end of the second connecting pipe (404) is fixedly connected with the end face of the second end of the first box body (401) and communicated with the first box body (401), and the end face of the second end of the second connecting pipe (404) is provided with an opening.

6. The packing box gland according to claim 5,

the opening of the end surface of the second end of the second connection pipe (404) faces the second end of the first box body (401) and is parallel to the end surface of the second end of the first box body (401).

7. The packing box gland according to any one of claims 1 to 6,

the platen assembly (30) includes: a first platen (301) and a second platen (302) of circular plate shape, the diameter of the first platen (301) being smaller than the diameter of the second platen (302), the first platen (301) being close to the gland body (10) relative to the second platen (302);

one end, far away from the gland body (10), of the sleeve (20) is provided with a first step structure (201) connected with the first pressing plate (301) and a second step structure (202) connected with the second pressing plate (302).

8. The packing box gland according to claim 7,

the sleeve (20) further having a first space (203) between the first platen (301) and the gland body (10), and a second space (204) between the first platen (301) and the second platen (302);

the first container (40) is in communication with the first space (203), and the second container (50) is in communication with the second space (204).

9. The packing box gland according to claim 7,

the platen assembly (30) further comprises: a first sealing fin (305) located between the first pressure plate (301) and the first step structure (201), and a second sealing fin (306) located between the second pressure plate (302) and the second step structure (202).

10. A packing box, comprising:

the packing box body, with this internal packing box gland that connects of packing box, and be located this internal packing of packing box, the packing box gland be claim 1 to 9 any packing box gland.

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