CN216111237U - Pressure stress combination pump head body liquid cavity - Google Patents
Pressure stress combination pump head body liquid cavity Download PDFInfo
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- CN216111237U CN216111237U CN202122110156.3U CN202122110156U CN216111237U CN 216111237 U CN216111237 U CN 216111237U CN 202122110156 U CN202122110156 U CN 202122110156U CN 216111237 U CN216111237 U CN 216111237U
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Abstract
A pressure stress combination pump head body liquid cavity comprises a cavity outer wall and an inner cavity barrel, wherein a mounting opening is formed in the side surface of the cavity outer wall, the inner cavity barrel is inserted into the cavity outer wall from the mounting opening, a body fluid cavity is formed in the inner cavity barrel, and a liquid inlet and outlet chamber is formed in the inner part of the cavity outer wall and communicated with the body fluid cavity; the utility model adopts a combined cavity mounting mode, can generate tangential pressure stress on the inner cylinder and tangential tensile stress on the outer wall of the chamber through interference fit connection, further enables the stress distribution borne by the cylinder wall direction to be more uniform and reasonable, and prolongs the service life of the high-pressure plunger pump head.
Description
Technical Field
The utility model belongs to the technical field of high-pressure plunger pump accessories, and particularly relates to a pressure stress combined pump head body liquid cavity.
Background
In the working process of the high-pressure plunger pump, the liquid cylinder body in the high-pressure plunger pump can continuously suck and discharge liquid, the discharge stroke generated by the working of the high-pressure plunger pump is an intermittent process, the discharge stroke can generate larger dynamic load in the initial stage and cause the instantaneous pressure borne by the liquid cylinder body to be far larger than the working pressure, and the pressure borne by the liquid cylinder body is larger and larger as the oil well is exploited deeper and deeper; in order to improve the service life of the cylinder body, the existing methods generally increase the wall thickness of the liquid cylinder body and change the manufacturing material of the cylinder body as an improvement point. However, such methods are inefficient and increase the overall quality and cost of manufacturing the cylinder.
The high pressure plunger pump head that uses at present divide into integral and split type, and above two kinds of pump heads all are at the inside processing play liquid cavity of the blank of the pump head body, and the pump head body liquid cavity is at the during operation inner chamber pressurized and the outer wall is pressureless, and the internal pressure that produces in the during operation hydraulic cylinder acts on the hydraulic cylinder medial surface, and this effort reduces gradually along the wall thickness direction, and the gradient is great. At the intersection of the hole and the hole inside the chamber, the stress on the intersection is the largest due to the abrupt change of the curvature. The cause of the cracking failure of the pump head body is generally formed by the beginning of the intersection.
Disclosure of Invention
In view of the technical problems in the background art, the utility model provides a pressure stress combined pump head body liquid cavity, which adopts a combined cavity installation mode, and can enable an inner cylinder to generate tangential pressure stress and generate tangential tensile stress on the outer wall of a cavity through interference fit connection, so that the stress distribution borne by the cylinder wall is more uniform and reasonable, and the service life of a high-pressure plunger pump head is prolonged.
In order to solve the technical problems, the utility model adopts the following technical scheme to realize:
the utility model provides a pressure stress combination pump head body liquid cavity, includes a cavity outer wall and an intracavity section of thick bamboo, has seted up the installing port including the side of cavity outer wall, and an intracavity section of thick bamboo inserts the cavity outer wall from the installing port department in, has seted up the body fluid cavity in the intracavity section of thick bamboo, and the inside of cavity outer wall has been seted up and has been advanced out the liquid room and be linked together with the body fluid cavity.
In the preferred scheme, the upper and lower lateral wall department of a intracavity section of thick bamboo is equipped with the location bolt, and the installation department of cavity outer wall has seted up the location jack, and when an intracavity section of thick bamboo inserted in the cavity outer wall, the location bolt adaptation was inserted in the location jack.
In the preferred scheme, the port parts of the cavity inner cylinder and the mounting port are provided with scale marks.
In a preferred scheme, the outer diameter of the cavity inner cylinder is slightly larger than the inner diameter of the mounting opening.
In the preferred scheme, an interference fit connection mode is adopted between the cavity inner cylinder and the cavity outer wall.
This patent can reach following beneficial effect:
1. the device adopts a combined cylinder body installation mode, reduces the tensile stress of the inner surface of the hydraulic cylinder, particularly the intersection of the hole and the hole, improves the utilization rate of pump head materials and prolongs the service life of the pump head;
2. be provided with scale mark and bolt on the device, can show the assembly precision that improves the cylinder body, can improve the fastness between the cylinder body through the mounting means who adopts interference fit.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a schematic view of the overall appearance structure of the present invention;
FIG. 2 is a sectional view showing the internal structure of the present invention;
FIG. 3 is a second cross-sectional view of the internal structure of the present invention;
fig. 4 is a schematic plan view of the internal structure of the present invention.
In the figure: the device comprises a chamber outer wall 1, a chamber inner cylinder 2, a positioning bolt 3, a positioning jack 4, scale marks 5, a body fluid chamber 6, a liquid inlet and outlet chamber 7 and a mounting port 8.
Detailed Description
As shown in fig. 1 to 4, a pressure stress combined pump head body liquid cavity comprises a cavity outer wall 1 and an inner cavity barrel 2, wherein a mounting opening 8 is formed in the side surface of the cavity outer wall 1, the inner cavity barrel 2 is inserted into the cavity outer wall 1 from the mounting opening 8, and the inner cavity barrel 2 and the cavity outer wall 1 adopt a split design, so that the inner cavity barrel 2 can generate tangential pressure stress and the cavity outer wall 1 can generate tangential tensile stress; a body fluid cavity 6 is arranged in the cavity inner barrel 2, and a liquid inlet and outlet chamber 7 is arranged in the cavity outer wall 1 and communicated with the body fluid cavity 6.
According to the preferable scheme, as shown in fig. 1 and fig. 2, the upper side wall and the lower side wall of the cavity inner cylinder 2 are provided with positioning bolts 3, the mounting port 8 of the cavity outer wall 1 is provided with a positioning jack 4, and when the cavity inner cylinder 2 is inserted into the cavity outer wall 1, the positioning bolts 3 are inserted into the positioning jack 4 in a matching way; through the design, the inner cavity barrel 2 can be ensured not to rotate mistakenly in the process of being inserted into the outer wall 1 of the chamber, and the assembly precision between the inner cavity barrel 2 and the outer wall 1 of the chamber is ensured.
Preferably, as shown in fig. 1, the end openings of the intracavity drum 2 and the mounting opening 8 are provided with scale marks 5, and the scale marks 5 can further improve the assembly precision between the intracavity drum 2 and the chamber outer wall 1.
As shown in fig. 1 to 3, the outer diameter of the cavity inner barrel 2 is slightly larger than the inner diameter of the mounting opening 8; the inner cavity barrel 2 and the outer cavity wall 1 are connected in an interference fit mode. During installation, the cavity inner barrel 2 is rapidly cooled and frozen by liquid nitrogen, and the cavity inner barrel 2 is rapidly pressed into the outer wall 1 of the cavity after the cavity inner barrel 2 is precooled and contracted;
the connection between the cavity inner barrel 2 and the cavity outer wall 1 is firmer in the way; in addition, compare in the cavity design of integral type, the tensile stress that adopts this mode to carry out the chamber intracavity section of thick bamboo 2 of combining can be less than the tensile stress of ordinary hydraulic cylinder, and the tensile stress of chamber outer wall 1 then can be higher than the tensile stress of ordinary hydraulic cylinder, and then makes the more even reasonable of the stress distribution of chamber inside and outside wall, has guaranteed the stability of combination pump head later stage operation.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the utility model.
Claims (5)
1. The utility model provides a pressure stress combination pump head body liquid chamber, includes cavity outer wall (1) and intracavity section of thick bamboo (2), its characterized in that: mounting hole (8) have been seted up to the side of cavity outer wall (1), and cavity inner tube (2) are followed mounting hole (8) and are inserted in cavity outer wall (1), have seted up body fluid cavity (6) in cavity inner tube (2), and the inside of cavity outer wall (1) has been seted up and has been advanced liquid room (7) and be linked together with body fluid cavity (6).
2. A pressure-stress combination pump head body liquid chamber according to claim 1, characterized in that: the upper side wall and the lower side wall of the cavity inner barrel (2) are provided with positioning bolts (3), the mounting hole (8) of the outer wall (1) of the cavity is provided with a positioning insertion hole (4), and when the cavity inner barrel (2) is inserted into the outer wall (1) of the cavity, the positioning bolts (3) are adapted to be inserted into the positioning insertion hole (4).
3. A pressure-stress combination pump head body liquid chamber according to claim 1, characterized in that: and the end openings of the cavity inner cylinder (2) and the mounting opening (8) are provided with scale marks (5).
4. A pressure-stress combination pump head body liquid chamber according to claim 1, characterized in that: the outer diameter of the cavity inner cylinder (2) is slightly larger than the inner diameter of the mounting opening (8).
5. A pressure-stress combination pump head body liquid chamber according to claim 1, characterized in that: the inner cavity barrel (2) and the outer cavity wall (1) are connected in an interference fit mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122110156.3U CN216111237U (en) | 2021-09-02 | 2021-09-02 | Pressure stress combination pump head body liquid cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122110156.3U CN216111237U (en) | 2021-09-02 | 2021-09-02 | Pressure stress combination pump head body liquid cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216111237U true CN216111237U (en) | 2022-03-22 |
Family
ID=80730559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122110156.3U Active CN216111237U (en) | 2021-09-02 | 2021-09-02 | Pressure stress combination pump head body liquid cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216111237U (en) |
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2021
- 2021-09-02 CN CN202122110156.3U patent/CN216111237U/en active Active
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