CN113757104A - Rotary positioning and compressing structure for crosshead slideway of reciprocating pump - Google Patents
Rotary positioning and compressing structure for crosshead slideway of reciprocating pump Download PDFInfo
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- CN113757104A CN113757104A CN202111105014.6A CN202111105014A CN113757104A CN 113757104 A CN113757104 A CN 113757104A CN 202111105014 A CN202111105014 A CN 202111105014A CN 113757104 A CN113757104 A CN 113757104A
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- crosshead
- slideway
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- positioning
- slide way
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- 238000003825 pressing Methods 0.000 claims description 33
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000005192 partition Methods 0.000 claims description 4
- 238000003754 machining Methods 0.000 claims description 3
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 239000003208 petroleum Substances 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/22—Arrangements for enabling ready assembly or disassembly
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention discloses a rotary positioning and compressing structure of a crosshead slide way of a reciprocating pump, which relates to the field of petroleum engineering equipment and specifically comprises a crosshead cavity mounting crosshead lower slide way part, a mounting upper slide way part, a crosshead cavity, a crosshead lower slide way, a long press plate, a crosshead lower slide way support rib, a positioning press plate, a hexagon socket screw, a crosshead upper slide way support rib, a crosshead upper slide way, a tensioning press plate, a tensioning positioning press plate and the like, wherein each crosshead slide way is compressed by 16M 12 hexagon socket head screws, stress points are arranged on the crosshead support rib, the contact surfaces of the press plate and the slide way are inclined planes, the fitting degree of the crosshead slide way and a rack meets the requirement that the fitting degree is more than or equal to 85 percent, each crosshead slide way is provided with a specified positioning method and a specified compressing method, a user does not need to align when mounting the crosshead slide way, and can accurately control the inclined planes of the crosshead slide ways to be at specified rotary equal heights, the technical requirements on the user are reduced.
Description
Technical Field
The invention relates to the field of petroleum engineering equipment, in particular to a rotary positioning and compacting structure of a crosshead slide way of a reciprocating pump.
Background
Two reciprocating pumps with very similar structures, namely a drilling pump and a fracturing pump, appear in the field of petroleum engineering equipment. The two reciprocating pumps are provided with a friction pair consisting of a pair of crosshead and a slideway, the crosshead, a crankshaft and a connecting rod which are arranged in a rack form a typical crank connecting rod mechanism, the rotary motion of the crankshaft is converted into the reciprocating linear motion of the crosshead, the slideway is fixedly arranged on the rack, the service life of the friction pair is long, one of important conditions is to ensure that the contact specific pressure between the excircle of the crosshead and the inner hole of the slideway is small, namely the same pressure, the contact area between the excircle of the crosshead and the inner hole of the slideway is large, the diameter of the excircle of the crosshead and the inner hole of the slideway is the most effective measure, but the distance between each cylinder of the reciprocating pump is increased after the diameter is increased, harmful functions are generated after the distance between each cylinder is increased, and because the reciprocating pump is a crank connecting rod mechanism, the first-order inertia moment, the second-order inertia moment and the rotary inertia moment of the crank connecting rod mechanism cannot be balanced in the reciprocating pump, the first order moment of inertia, the second order moment of inertia and the rotating moment of inertia are in direct proportion to the distance between each cylinder, the larger the distance between each cylinder is, the larger the values of the first order moment of inertia, the second order moment of inertia and the rotating moment of inertia are, which is a pair of contradictions, in order to solve the contradictions, when designing the reciprocating pump, the larger the value of the outer circle of the crosshead and the inner hole of the slide way, and the smaller the distance between each cylinder, which brings a problem that the distance is reduced, the space is very narrow, the press of the crosshead slide way is difficult, because the crosshead slide way occupies space, in order to meet the requirement, a solution of a reciprocating pump slide way device of patent is that, taking a five-cylinder reciprocating pump as an example, all reinforcing partition plates between five cylinders are removed, which influences the strength of a frame of the reciprocating pump, the second measure is that the pressing device of the crosshead slide is used for processing 8 large countersunk holes on the friction surface of the crosshead slide to fix the crosshead slide on the frame, but the friction surface is discontinuous, so that an oil film between the crosshead slide and the crosshead is damaged, and the service lives of the crosshead and the crosshead slide are short. Another patent "a connection structure for a cross head slide of a drill pump" solves two problems of "a slide device of a reciprocating pump", but has 2 problems: the first problem is that only 8 compression bolts of one slide way can be used, the pressure for compressing the slide way is insufficient, the fit degree of the slide way and a rack does not meet the requirement that the fit degree is greater than or equal to 85%, the contact area between the friction surface of the slide way and a crosshead is reduced, and the service life of the crosshead and the crosshead slide way is shortened; the 2 nd problem is that the briquetting of two sides of cross head slide does not design the rotatory location structure of restriction cross head slide, and the user must fine alignment when installing the cross head slide, still needs to use the depth slide caliper to measure, and is too high to user's technical requirement, therefore needs to improve a reciprocating pump cross head slide rotational positioning and compact structure of these two problems and has become the problem that awaits a urgent need to be solved.
Disclosure of Invention
The invention aims to provide a rotary positioning and pressing structure for a crosshead slide way of a reciprocating pump.
The technical scheme of the invention is as follows:
the defects of the patent technology of 'a reciprocating pump slideway device' are found, the pressing slideway can not process a countersunk hole on the friction surface of the slideway for installing a pressing bolt absolutely, so that the friction surface is not discontinuous, an oil film between a crosshead slideway and a crosshead is not damaged, and the service life of the crosshead and the crosshead slideway is not shortened.
The method finds the defects of the patent technology of 'a connecting structure for a cross head slide way of a drilling pump', and overcomes the defects one by one, the 1 st measure is that only 8 compression bolts of the original cross head slide way can be increased to 16 bolts with the same specification, the pressure for compressing the cross head slide way is expanded by 1 time, the fitting degree of the cross head slide way and a rack completely reaches the design requirement of more than or equal to 85%, the contact area between the friction surface of the cross head slide way and a cross head is expanded, and the service life of the cross head and the cross head slide way is prolonged; the 2 nd measure is, the briquetting of two sides of cross head slide, and one of them briquetting compresses tightly earlier, has just carried out accurate positioning to the rotatory position of cross head slide automatically, does not need the user to measure the alignment with degree of depth slide caliper when the installation cross head slide completely, and the user is very convenient.
Drawings
FIG. 1-a perspective view of a five cylinder reciprocating pump crosshead cavity compression crosshead slide;
FIG. 2 is a partial perspective view of a crosshead lower runner with a crosshead cavity mounted;
3-5 upper run mount upper run partial perspective views;
FIG. 4-3 are perspective views of the upper run mount with the upper run partially installed;
FIG. 5-the top view of FIG. 1;
FIG. 6-section A-A of FIG. 5;
fig. 7-B cross-sectional view of fig. 5.
The reference numbers are as follows:
1-crosshead cavity installation crosshead lower slideway part, 2-5 th upper slideway seat installation upper slideway part, 3-3 rd upper slideway seat installation upper slideway part, 4-crosshead cavity, 5-crosshead lower slideway, 6-long press plate, 7-crosshead lower slideway support rib, 8-positioning press plate, 9-inner hexagonal screw and gasket set, 10-5 th upper slideway seat, 11-crosshead upper slideway support rib, 12-crosshead upper slideway, 13-tensioning press plate, 14-inner hexagonal screw and gasket set, 15-3 rd upper slideway seat, 16-tensioning positioning press plate, 17-gapless, 18-gapless, 4.1-reinforcing partition plate, 5.1-inclined surface, 6.1-inclined surface, 8.1-inclined surface, 12.1-inclined surface, 13.1-inclined surface, 16.1-inclined plane.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
The embodiments of the present invention are not limited to the following examples, and various changes made without departing from the spirit of the present invention are within the scope of the present invention.
Referring to fig. 1 to 7, the rotary positioning and compressing structure for the crosshead slide of the reciprocating pump in this embodiment includes a crosshead lower slide portion 1 installed in a crosshead cavity, an upper slide portion 2 installed in a 5 th upper slide seat, an upper slide portion 3 installed in a 3 rd upper slide seat, a crosshead cavity 4, a crosshead lower slide 5, a long press plate 6, a crosshead lower slide support rib 7, a positioning press plate 8, an inner hexagon screw and washer set 9, a 5 th upper slide seat 10, an upper crosshead slide support rib 11, an upper crosshead slide 12, a tensioning press plate 13, an inner hexagon screw and washer set 14, an upper 3 rd slide seat 15, a tensioning positioning press plate 16, no gap 17, a gap 18, a reinforcing partition plate 4.1, an inclined surface 5.1, an inclined surface 6.1, an inclined surface 8.1, an inclined surface 12.1, an inclined surface 13.1, and an inclined surface 16.1.
Referring to fig. 1, 2, 3 and 4, the reciprocating pump has a crosshead cavity 4, the crosshead cavity 4 is divided into a crosshead cavity mounting crosshead lower chute portion 1, the crosshead cavity mounting crosshead upper chute portion is provided, as shown in fig. 1, the crosshead cavity mounting crosshead lower chute portion 1 is an integral part, as shown in fig. 2, the crosshead cavity upper chute mounting upper chute is divided into 5 independent parts 1, 2, 3, 4 and 5, which can be independently assembled and disassembled, according to the upper chute seat mounting upper chute form, divided into two types, the 1 st and 5 th parts on both sides are one type, the 2 nd, 3 rd and 4 th parts in the middle are another type, so that the 5 th upper chute seat mounting upper chute portion 2 and the 3 rd upper chute seat mounting upper chute portion 3 are used as two representatives, as shown in fig. 3 and 4 respectively.
Referring to fig. 5, 6 and 7, since the crosshead cavity 4 of the reciprocating pump is divided into a crosshead cavity for mounting the crosshead lower slideway part 1, a 5 th upper slideway seat for mounting the upper slideway part 2, a 3 rd upper slideway seat for mounting the upper slideway part 3 and the like for mounting the upper slideway part, the forms of the upper part and the lower part of the crosshead cavity 4 for pressing the crosshead slideways are different, no matter the crosshead cavity 4 is an upper cavity or a lower cavity, the two sides and the middle are different, and because the space distance between the two sides is slightly larger, the forms of the two sides and the middle of the crosshead cavity 4 for pressing the crosshead slideways are different.
Referring to fig. 2, 5 and 6, 5 crosshead glideslopes are compressed by 16 hexagon socket head cap screws and washer sets 9, the first characteristic is that each crosshead glideslope is compressed by 16 hexagon socket head cap screws and washer sets 9, the types of the bolts are all M12, which is twice as large as that of a compression screw in the 'connecting structure for a drill pump crosshead glideslope', the second characteristic is that stress points of a positioning pressing plate 8 and a long pressing plate 6 are both arranged on a crosshead glideslope supporting rib 7, the 3 rd characteristic is that the contact surfaces of the crosshead pressing plate and the glideslope 5 are inclined surfaces, namely, the inclined surface 8.1 of the positioning pressing plate 8 is in good contact with the inclined surface 5.1 of the crosshead lower slideway 5, the inclined surface 6.1 of the long pressing plate 6 is in good contact with the inclined surface 5.1 of the crosshead lower slideway 5, and the three characteristics can fully ensure that the stress condition is very good when the crosshead lower slideway 5 is compressed, deformation cannot be generated, and the joint degree of the crosshead slideway and a rack meets the requirement that the joint degree is more than or equal to 85 percent.
Referring to fig. 2, 5 and 6, the rotary positioning mode of the crosshead gliders 5 of the crosshead cavities 4, namely the height of the inclined planes 5.1 at the two sides of the crosshead gliders 5 is limited, is controlled by the inclined planes 8.1 of the positioning pressing plates 8 at the two ends, because the positions of the crosshead glider supporting ribs 7 are guaranteed by machining before assembly, and the positioning pressing plates 8 are respectively fixed at the specified positions of the crosshead glider supporting ribs 7 at the two sides by 2 groups of hexagon socket head screws and gasket groups 9, so that the positions of the inclined planes 5.1 at the two sides of the crosshead glider 5 are accurately limited; the pressing mode is that the inclined surface 6.1 of the long pressing plate 6 is placed on the inclined surface 5.1 of the crosshead slipway 5, each long pressing plate 6 is respectively pressed to a specified torque value by 4 socket head cap screws and gasket groups 9, and all the 5 crosshead slipways 5 control the inclined surfaces 5.1 to be at the same height.
Referring to fig. 3, 5, 6 and 7, the crosshead ways 12 at the two ends of the crosshead cavity 4 are positioned by the rotary positioning pressing plates 8, because the positions of the crosshead way support ribs 11 are guaranteed by machining before assembly, the positioning pressing plates 8 are respectively fixed at the specified positions of the crosshead way support ribs 11 by 2 groups of hexagon socket head cap screws and washer groups 9, so that the rotary positions of the inclined planes 12.1 at the two sides of the crosshead way 12 are accurately limited, the pressing mode is that the inclined planes 13.1 of the tensioning pressing plates 13 are placed on the inclined planes 12.1 of the crosshead way 12, each tensioning pressing plate 13 is respectively tensioned to the specified torque value by 2 groups of hexagon socket head screws and washer groups 14, and the crosshead way 12 controls the inclined planes 12.1 to be at the same height.
Referring to fig. 4, 5, 6 and 7, the crosshead shoe 12 in the middle of the crosshead cavity 4 is rotationally positioned by tensioning the positioning platen 16, because the position of the crosshead slideway support rib 11 is ensured by processing before assembly, 2 groups of inner hexagon screws and gasket groups 14 are respectively used for fixing the tensioning and positioning pressure plates 16 at the specified positions of the crosshead slideway support rib 11, the tensioning and positioning pressure plates 16 and the crosshead slideway support rib 11 have no gap 17, therefore, the positions of the inclined surfaces 12.1 at the two sides of the crosshead slideway 12 are accurately limited, the pressing mode is that the inclined surface 13.1 of the tensioning pressure plate 13 is placed on the inclined surface 12.1 of the crosshead slideway 12, the tensioning pressure plate 13 and the crosshead slideway support rib 11 have a gap 18, each tensioning pressure plate 13 can be respectively tensioned to a specified torque value by 2 groups of hexagon socket head screws and washers 14, and the inclined surfaces 12.1 of the crosshead slideway 12 can be controlled at the same height.
Because each crosshead lower slideway 5 and each crosshead upper slideway 12 have a specified rotary positioning method and a specified pressing method, a user does not need to align when mounting the crosshead slideways and measure by using a depth vernier caliper, and the inclined planes of the crosshead slideways can be mounted at specified equal height positions, so that the technical requirements for the user are reduced.
The invention takes a five-cylinder reciprocating pump as an example, and the positioning and pressing methods of the three-cylinder reciprocating pump are completely the same.
The above detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art, and these changes are within the protection of the present invention and also within the protection scope of the present invention.
Claims (5)
1. A rotary positioning and compressing structure of a cross head slideway of a reciprocating pump is characterized in that a cross head cavity is provided with a cross head lower slideway part (1), a 5 th upper slideway seat is provided with an upper slideway part (2), a 3 rd upper slideway seat is provided with an upper slideway part (3), a cross head cavity (4), a cross head lower slideway (5), a long pressing plate (6), a cross head lower slideway supporting rib (7), a positioning pressing plate (8), an inner hexagonal screw and gasket group (9), a 5 th upper slideway seat (10), a cross head upper slideway supporting rib (11), a cross head upper slideway (12), a tensioning pressing plate (13), an inner hexagonal screw and gasket group (14), a 3 rd upper slideway seat (15), a tensioning positioning pressing plate (16), no clearance (17), a clearance (18), a reinforcing partition plate (4.1), an inclined plane (5.1), an inclined plane (6.1), an inclined plane (8.1) and an inclined plane (12.1), a bevel (13.1) and a bevel (16.1).
2. The rotary positioning and compacting structure of a reciprocating pump crosshead slide according to claim 1, wherein 5 compacted crosshead gliders have common characteristics, the first characteristic is that each crosshead glider is compacted by 16 socket head cap screws and a gasket set (9), the types of bolts are M12, the second characteristic is that stress points of a positioning pressure plate (8) and a long pressure plate (6) are all arranged on a crosshead glider support rib (7), and the 3 rd characteristic is that contact surfaces of the pressure plate and the crosshead glider (5) are inclined surfaces, and the three characteristics can fully ensure that the crosshead gliders (5) are stressed well when being compacted, cannot deform, and ensure that the degree of fit between the gliders and a rack reaches the requirement of more than or equal to 85%.
3. A reciprocating pump crosshead slide rotary positioning and clamping structure as claimed in claim 1, wherein the rotary positioning mode of the crosshead glidepath (5) of the crosshead cavity (4), i.e. the height of the inclined planes (5.1) at both sides of the crosshead glidepath (5) is limited, and is controlled by the inclined planes (8.1) of the positioning press plates (8) at both ends, because the position of the crosshead glidepath support rib (7) is guaranteed by machining before assembly, 2 sets of hexagon socket head cap screws and gasket sets (9) are respectively used for fixing the positioning press plates (8) at the specified positions of the crosshead glidepath support ribs (7) at both sides, so that the positions of the inclined planes (5.1) at both sides of the crosshead glidepath (5) are accurately limited, the clamping mode is that the inclined planes (6.1) of the long press plates (6) are placed on the inclined planes (5.1) of the crosshead glidepath (5), and each long press plate (6) is respectively clamped to the specified torque value by 4 sets of hexagon socket head cap screws and gasket sets (9), the 5 crosshead gliders (5) all control the ramp (5.1) at the same height.
4. A reciprocating pump crosshead slide way rotary positioning and clamping structure as claimed in claim 1, the crosshead slideways (12) at both ends of the crosshead cavity (4) are positioned by positioning press plates (8), because the position of the cross head upper slideway support rib (11) is ensured by processing before assembly, 2 groups of inner hexagon screws and gasket groups (9) are respectively used for fixing the positioning pressure plate (8) at the specified position of the cross head upper slideway support rib (11), therefore, the positions of the inclined surfaces (12.1) at the two sides of the crosshead slideway (12) are accurately limited, the compression mode is that the inclined surfaces (13.1) of the tensioning pressure plates (13) are placed on the inclined surfaces (12.1) of the crosshead slideway (12), each tensioning pressure plate (13) is tensioned to a specified torque value by 2 groups of hexagon socket head screws and washers (14), and the crosshead slideway (12) controls the inclined surfaces (12.1) to be at the same height.
5. A rotary positioning and compacting structure of a cross head slideway of a reciprocating pump according to claim 1, wherein the positioning of the cross head slideway (12) in the middle of the cross head cavity (4) is ensured by a tensioning positioning pressing plate (16), because the position of the cross head slideway supporting rib (11) is processed before assembly, 2 groups of inner hexagon screws and gasket groups (14) are respectively used for fixing the tensioning positioning pressing plate (16) at the specified position of the cross head slideway supporting rib (11), the tensioning positioning pressing plate (16) and the cross head slideway supporting rib (11) have no gap 17, thereby accurately limiting the positions of the inclined planes (12.1) at both sides of the cross head slideway (12), the compacting mode is that the inclined plane (13.1) of the tensioning pressing plate (13) is placed on the inclined plane (12.1) of the cross head slideway (12), and the tensioning pressing plate (13) and the cross head slideway supporting rib (11) have a gap (18), each tensioning pressure plate (13) can be tensioned to a specified torque value by 2 groups of socket head cap screws and washers (14), and the inclined surfaces (12.1) of the cross head upper slideway (12) can be controlled to be at the same height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111105014.6A CN113757104A (en) | 2021-09-22 | 2021-09-22 | Rotary positioning and compressing structure for crosshead slideway of reciprocating pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111105014.6A CN113757104A (en) | 2021-09-22 | 2021-09-22 | Rotary positioning and compressing structure for crosshead slideway of reciprocating pump |
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| CN113757104A true CN113757104A (en) | 2021-12-07 |
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| CN202111105014.6A Pending CN113757104A (en) | 2021-09-22 | 2021-09-22 | Rotary positioning and compressing structure for crosshead slideway of reciprocating pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114012371A (en) * | 2021-12-27 | 2022-02-08 | 黄秀芳 | Reciprocating pump high-precision rack welding technical scheme and tool structure |
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