CN108953108B - Sectional type compressor piston counter weight device - Google Patents
Sectional type compressor piston counter weight device Download PDFInfo
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- CN108953108B CN108953108B CN201810683753.5A CN201810683753A CN108953108B CN 108953108 B CN108953108 B CN 108953108B CN 201810683753 A CN201810683753 A CN 201810683753A CN 108953108 B CN108953108 B CN 108953108B
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- counterweight
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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
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
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- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
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Abstract
The invention relates to the technical field of compressor parts, in particular to a sectional compressor piston counterweight device which comprises a piston body, wherein a middle assembly through hole for installing and fixing a piston rod is transversely formed in the center of the interior of the piston body, and an annular left counterweight groove and an annular right counterweight groove are formed in the outer side wall of the piston body. According to the sectional compressor piston counterweight device, the counterweight grooves internally provided with the upper counterweight sleeve and the lower counterweight sleeve are formed in the outer side wall of the piston body, and the counterweight lead block sleeves with the limiting grooves in the counterweight sleeves are sleeved in the counterweight grooves with the limiting strips to balance the mass of each row of pistons, so that reciprocating inertia force is balanced, and the stable operation of the compressor is ensured.
Description
Technical Field
The invention relates to the technical field of compressor parts, in particular to a sectional compressor piston counterweight device.
Background
The compressor is a general machine for increasing the pressure of various gases, and is one of the most extensive products in the mechanical industry. The power plant is widely applied in many departments of national economy, and almost extends to many fields of industry, agriculture, transportation, medical treatment and health, national defense, scientific research and even people's life, and is indispensable power equipment particularly in the aspects of chemical industry, synthesis, coal, petroleum, building construction, ocean engineering and the like. The piston is a main part of a piston compressor and cooperates with the cylinder to form a compression volume. The quality of the piston design is strongly related to the performance of the compressor. The materials commonly used for processing the piston include cast aluminum alloy, gray cast iron, steel materials and the like.
The weight of the piston is designed to be light to reduce the reciprocating inertia force. The mass balance of each row of pistons of the compressors with more than two rows of pistons should be balanced as much as possible according to the principle of inertia force balance. In the design of the compressor piston, the low-pressure stage piston with a larger diameter generally adopts cast aluminum to reduce the mass, and the high-pressure stage piston has a mass close to that of the low-pressure stage piston to achieve the aim of balancing reciprocating inertia force, so that the compressor can stably and reliably operate. However, sometimes, because the cylinder diameter of the low-pressure stage is large and the piston mass is heavy, and the cylinder diameter of the high-pressure stage is small, the piston of the high-pressure stage is difficult to reach the mass of the piston of the low-pressure stage, so that the masses of the pistons of the rows are unbalanced, and the risk that the compressor cannot run stably exists.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problems existing in the background technology, an improved sectional compressor piston counterweight device is provided, and the problems that the mass of each row of pistons is unbalanced and the risk that the compressor cannot run stably due to the fact that the piston of the high-pressure stage cannot reach the mass of the piston of the low-pressure stage at present are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a sectional compressor piston counterweight device comprises a piston body, wherein a middle assembly through hole for installing and fixing a piston rod is transversely formed in the center position in the piston body, an annular left counterweight groove and an annular right counterweight groove are formed in the outer side wall of the piston body, an arc-shaped upper counterweight sleeve is sleeved at the upper end in the left counterweight groove and the right counterweight groove, arc-shaped lower counterweight sleeves are sleeved at the lower ends in the left counterweight groove and the right counterweight groove, corresponding internal thread fixing holes are formed in the connecting surface of the upper counterweight sleeve and the lower counterweight sleeve, bolt assembling holes communicated with the corresponding internal thread fixing holes are formed in the outer arc surface of the upper counterweight sleeve and the outer arc surface of the lower counterweight sleeve, the upper counterweight sleeve and the lower counterweight sleeve are fixedly connected with fixing bolts in the bolt assembling holes through the internal thread fixing holes, and the upper counterweight sleeve and the lower counterweight sleeve form a counterweight ring through bolt fixing, the inner side walls of the upper counterweight sleeve and the lower counterweight sleeve are provided with counterweight grooves internally provided with detachable counterweight lead blocks, and the upper counterweight sleeve and the lower counterweight sleeve are sleeved on the left counterweight groove and the right counterweight groove at corresponding positions through fixing bolts and are fixedly connected with the piston body.
Furthermore, the inner side arc faces of the left counterweight groove and the right counterweight groove are fixedly connected with limiting strips protruding outwards, and limiting grooves matched with the limiting strips are formed in the side walls of the counterweight lead block, close to the left counterweight groove and the right counterweight groove.
Furthermore, the inner thread of the bolt assembling hole is connected with an external thread plug used for improving the sealing performance of the piston body and the safety of the fixing bolt.
Furthermore, the left counterweight groove and the right counterweight groove have the same size.
Furthermore, the upper counterweight sleeve and the lower counterweight sleeve have the same size.
The sectional compressor piston counterweight device has the advantages that the counterweight grooves with the built-in upper and lower counterweight sleeves are formed in the outer side wall of the piston body, and the counterweight lead block sleeves with the limiting grooves in the counterweight sleeves are sleeved in the counterweight grooves with the limiting strips to balance the mass of each row of pistons, balance reciprocating inertia force and ensure stable operation of the compressor.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
In the drawing, 1, a piston body, 2, a middle assembly through hole, 3, a left counterweight groove, 4, a right counterweight groove, 5, an upper counterweight sleeve, 6, a lower counterweight sleeve, 7, an internal thread fixing hole, 8, a bolt assembly hole, 9, a fixing bolt, 10, a counterweight lead block, 11, a counterweight groove, 12, a limiting strip, 13, a limiting groove and 14, an external thread plug are arranged.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
The sectional compressor piston counterweight device shown in figures 1 and 2 comprises a piston body 1, a central assembly through hole 2 for installing and fixing a piston rod is transversely arranged at the central position in the piston body 1, an annular left counterweight groove 3 and an annular right counterweight groove 4 are arranged on the outer side wall of the piston body 1, an arc-shaped upper counterweight sleeve 5 is sleeved at the upper end in the left counterweight groove 3 and the right counterweight groove 4, an arc-shaped lower counterweight sleeve 6 is sleeved at the lower end in the left counterweight groove 3 and the right counterweight groove 4, corresponding internal thread fixing holes 7 are arranged on the connecting surface of the upper counterweight sleeve 5 and the lower counterweight sleeve 6, bolt assembling holes 8 communicated with the internal thread fixing holes 7 at the corresponding positions are respectively arranged on the outer arc surface of the upper counterweight sleeve 5 and the outer arc surface of the lower counterweight sleeve 6, the upper counterweight sleeve 5 and the lower counterweight sleeve 6 are fixedly connected through the internal thread fixing holes 7 and a fixing bolt 9 in the bolt assembling holes 8, go up counter weight cover 5 and counter weight cover 6 and form a counter weight ring through the bolt fastening, go up counter weight cover 5 and set up the counter weight groove 11 of built-in detachable counter weight lead 10 on the 6 inside walls of counter weight cover down, go up counter weight cover 5 and counter weight cover 6 down and pass through fixing bolt 9 cover and piston body 1 fixed connection on the left side counter weight groove 3 and the right side counter weight groove 4 of corresponding position.
Furthermore, the inner side arc surfaces of the left counterweight groove 3 and the right counterweight groove 4 are fixedly connected with a limiting strip 12 which protrudes outwards, the side wall of the counterweight lead block 10 close to the left counterweight groove 3 and the right counterweight groove 4 is provided with a limiting groove 13 which is matched with the limiting strip 12, further, the inner part of the bolt assembly hole 8 is in threaded connection with an external thread plug 14 which is used for improving the sealing property of the piston body 1 and the safety of the fixing bolt 9, further, the left counterweight groove 3 and the right counterweight groove 4 have the same size, further, the upper counterweight sleeve 5 and the lower counterweight sleeve 6 have the same size, the sectional compressor piston counterweight device of the invention balances the mass of each row of pistons by arranging the counterweight grooves which are internally provided with the upper counterweight sleeve and the lower counterweight sleeve on the outer side wall of the piston body 1 and utilizing the counterweight lead block 10 which is provided with the limiting groove 13 in the counterweight sleeve to be sleeved in the counterweight groove with the limiting strip 12, balance the reciprocating inertia force and ensure the stable operation of the compressor.
Common material density (g/cm) of piston3): the cast aluminum was 2.68, the gray cast iron was 7.35, and the steel was 7.85. And lead has a density of 11.34, which is about 4.23 times that of cast aluminum, 1.54 times that of gray cast iron, and 1.44 times that of steel, and thus can be used as a weight material for a piston.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. The utility model provides a sectional type compressor piston counter weight device, includes piston body (1), characterized by: piston body (1) inside central point put and transversely seted up and be used for installing fixed piston rod put assembly through-hole (2) in, piston body (1) lateral wall seted up annular left side and put counterweight groove (3) and annular right side and put counterweight groove (4), the inside upper end cover of left side put counterweight groove (3) and right side put counterweight groove (4) have an arc and go up counter weight cover (5), the inside lower pot head of left side put counterweight groove (3) and right side put counterweight groove (4) have an arc counter weight cover (6) down, last counter weight cover (5) and counter weight cover (6) connect and seted up corresponding internal thread fixed orifices (7) on the face, last counter weight cover (5) outside arcwall face and counter weight cover (6) outside arcwall face all set up bolt pilot hole (8) that are linked together with corresponding position internal thread fixed orifices (7), last counter weight cover (5) and lower counter weight cover (6) through internal thread fixed orifices (7) and bolt pilot hole (8) in The upper counterweight sleeve (5) and the lower counterweight sleeve (6) are fixed by bolts to form a counterweight ring, the inner side walls of the upper counterweight sleeve (5) and the lower counterweight sleeve (6) are provided with counterweight grooves (11) internally provided with detachable counterweight lead blocks (10), and the upper counterweight sleeve (5) and the lower counterweight sleeve (6) are sleeved on the left counterweight groove (3) and the right counterweight groove (4) at corresponding positions by the fixing bolts (9) and are fixedly connected with the piston body (1);
put left side counterweight groove (3) and right side counterweight groove (4) inboard arcwall face on equal fixedly connected with outside bellied spacing (12), counterweight lead (10) nearly left side counterweight groove (3) and right side counterweight groove (4) lateral wall on offer with spacing (12) matched with spacing (13).
2. The piston counterweight device of a sectional compressor as claimed in claim 1, wherein: and an external thread plug (14) used for improving the sealing property of the piston body (1) and the safety of the fixing bolt (9) is connected with the internal thread of the bolt assembling hole (8).
3. The piston counterweight device of a sectional compressor as claimed in claim 1, wherein: the left counterweight groove (3) and the right counterweight groove (4) have the same size.
4. The piston counterweight device of a sectional compressor as claimed in claim 1, wherein: the upper counterweight sleeve (5) and the lower counterweight sleeve (6) have the same size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810683753.5A CN108953108B (en) | 2018-06-28 | 2018-06-28 | Sectional type compressor piston counter weight device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810683753.5A CN108953108B (en) | 2018-06-28 | 2018-06-28 | Sectional type compressor piston counter weight device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108953108A CN108953108A (en) | 2018-12-07 |
| CN108953108B true CN108953108B (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810683753.5A Active CN108953108B (en) | 2018-06-28 | 2018-06-28 | Sectional type compressor piston counter weight device |
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| Country | Link |
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| CN (1) | CN108953108B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04284190A (en) * | 1991-03-12 | 1992-10-08 | Matsushita Refrig Co Ltd | Sealed type reciprocating compressor |
| CN201133336Y (en) * | 2007-09-28 | 2008-10-15 | 王宏斌 | Compressor piston possessing spring support and guiding piece |
| CN201679680U (en) * | 2010-05-20 | 2010-12-22 | 扎努西电气机械天津压缩机有限公司 | Piston of compressor for refrigerator |
| CN206397690U (en) * | 2017-01-05 | 2017-08-11 | 浙江强盛压缩机制造有限公司 | A kind of split type balancing weight of compressor |
| CN107575361A (en) * | 2017-09-28 | 2018-01-12 | 蚌埠高科能源装备有限公司 | It is a kind of to balance the compressor piston for moving back and forth inertia force |
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2018
- 2018-06-28 CN CN201810683753.5A patent/CN108953108B/en active Active
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| Publication number | Publication date |
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| CN108953108A (en) | 2018-12-07 |
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