CN114001017A

CN114001017A - Diaphragm compressor cylinder with clamp and jackscrew

Info

Publication number: CN114001017A
Application number: CN202111016871.9A
Authority: CN
Inventors: 黄津鹄; 尹祥; 郑权明
Original assignee: Guangdong Foran Technology Co ltd; Guangdong Foran Tiangao Fluid Machinery Equipment Co ltd; Foshan Gas High Pressure Pipe Network Co ltd
Current assignee: Guangdong Foran Technology Co ltd; Guangdong Foran Tiangao Fluid Machinery Equipment Co ltd; Foshan Gas High Pressure Pipe Network Co ltd
Priority date: 2021-08-31
Filing date: 2021-08-31
Publication date: 2022-02-01

Abstract

The invention provides a diaphragm compressor cylinder with a hoop and a jackscrew, which comprises a cylinder body and a cylinder cover, wherein the lower end of the cylinder cover is matched with the upper end of the cylinder body, and the cylinder cover is fixedly connected with the cylinder body; still include clamp structure and jackscrew structure, the cylinder body with the contact surface of cylinder cap sets up the inboard of clamp structure, the interior edge of clamp with the cylinder body with the cooperation is followed outward to the cylinder cap, the cylinder cap with the cylinder body passes through clamp structure and jackscrew structure fixed connection and reaches the requirement of cylinder cap pretightning force, the clamp structure comprises two at least clamp piece fixed connection. The clamp and the jackscrew are matched to replace the original mode of fixedly connecting the cylinder cover and the cylinder body through a bolt with a larger diameter, so that the overall structure is reduced, and space resources are saved; most bolt pretension moment changes the horizontal direction into by the vertical direction, and pretension moment diminishes simultaneously, and the staff need apply torque when the installation and reduce, has avoided the staff to need use big laborsaving spanner.

Description

Diaphragm compressor cylinder with clamp and jackscrew

Technical Field

The invention belongs to the field of diaphragm compressors, and particularly relates to a diaphragm compressor cylinder with a hoop and a jackscrew.

Background

The diaphragm compressor is a positive displacement compressor and has two main characteristics determined by the structural characteristics: the compression ratio is large, the sealing performance is good, and the life force of the diaphragm compressor is the same. The main working principle is as follows: the diaphragm is arranged between the cylinder cover and the cylinder body, the periphery of the diaphragm is a sealing surface, the concave-convex curved surface of the cylinder cover and the diaphragm and the sealing surface form an air cavity and an oil cavity, the piston or the plunger is driven by the driving mechanism to reciprocate, the piston or the plunger pushes oil (the oil is incompressible) in the oil cylinder to drive the diaphragm to compress air, the volume of the air in the diaphragm cavity is changed, and the purpose of air compression is realized under the matching of the air suction valve and the air discharge valve. The traditional diaphragm compressor is generally composed of single and double cylinders with one or two stages of compression, the structural form is generally Z, P, V, L, H and D, the most economical compression ratio is generally controlled within 14, that is to say: in a typical two-stage compression diaphragm compressor, the total compression ratio is 250 or less, and the discharge pressure is typically 16, 20, or 25 Mpa. With the development of economy in China, containers with the storage pressure of 35-100 Mpa are widely used, and the development of diaphragm compressor products with the total compression ratio of 250-1000 and the exhaust pressure of 35-100 Mpa generally becomes a new market demand. The higher the working pressure of the diaphragm compressor cylinder, the larger the diaphragm chamber volume, the thicker the fastening bolt of the circumference, for example: the pre-tightening force of the thickest bolt M68X4 used at present reaches 15000N.m, the bolt is very difficult to fasten and assemble, and a labor-saving wrench with the ratio of 1: 56-1: 70 is generally used for fastening, which is equivalent to fastening one bolt by 50-70 people.

Disclosure of Invention

Therefore, in order to solve the above problems, an object of the present invention is to provide a diaphragm compressor cylinder with a hoop and a jackscrew, including a cylinder body and a cylinder cover, wherein a convex edge is arranged at the lower part of the cylinder cover, so that the cylinder cover is in an inverted T shape, a groove is arranged on the side wall of the cylinder body, so that the cylinder body is in an i shape, the upper surface of the cylinder body and the lower surface of the cylinder cover jointly form a curved surface of a film cavity, a diaphragm is arranged in the curved surface of the film cavity, and the cylinder body is provided with a hole for placing a piston pair or a plunger pair; still include clamp structure and jackscrew structure, clamp structure comprises two at least clamp piece fixed connection, clamp structure's upper end is caught the top on protruding edge, clamp structure's lower extreme card is in the recess, clamp structure's interior edge with the cylinder cap with the cylinder body cooperation and then restricted the cylinder cap with the radial movement of cylinder body, the axial displacement of axial jacking force restriction cylinder cap is applyed to the cylinder cap to the jackscrew structure, clamp structure with the jackscrew structure mutually supports and makes the cylinder cap with cylinder body fixed connection just reaches the requirement of cylinder cap pretightning force.

Further, the jackscrew structure includes jackscrew swivel nut and jackscrew instrument, the upper end of clamp structure be equipped with jackscrew instrument matched with jackscrew hole, the jackscrew swivel nut sets up the upper end of clamp structure, the jackscrew instrument passes the jackscrew swivel nut with the jackscrew hole, the lower extreme of jackscrew instrument can the butt the upper end on protruding edge is screwed up the jackscrew instrument and is made the jackscrew instrument remove down, and it makes cylinder cap and cylinder body fixed to exert decurrent pressure on protruding edge.

Further, the jackscrew structure still is including setting up the packing ring of the upper end on protruding edge, the packing ring with the jacking force evenly spread that the jackscrew instrument produced on the cylinder cap is by the top surface, avoid the direct conflict cylinder cap of jackscrew instrument to make the jacking force of production concentrate and lead to the cylinder cap to warp, equally, in order to avoid the packing ring to receive the jacking force of jackscrew instrument to concentrate and lead to the deformation, the packing ring needs to adopt the material of high rigidity.

Further, the upper wall slope of recess, the interior slope of edge of the lower extreme of clamp structure and with the upper wall cooperation of recess, through the cooperation between the inclined plane, the radial movement of restriction cylinder body guarantees the structural stability of cylinder.

Further, the clamp blocks are fixedly connected through clamp bolts.

Further, the axis of the band bolt is parallel to the horizontal plane.

Furthermore, the inside of cylinder cap is equipped with the first cooling water course that can supply the one-way circulation of cooling water, forms the first cooling water course of broken line type through drilling technology, and first cooling water course encircles the cylinder cap a week as far as possible under the condition of guaranteeing cylinder cap overall structure stability, makes the cylinder cap everywhere can both fully cool off, is equipped with the water-cooling hole that supplies cooling water business turn over first cooling water course on the clamp structure.

Further, first cooling water course includes the at least two-layer water course of high difference, through first vertical water course intercommunication between the not individual layer water course of co-altitude, compares in individual layer cooling water course, and the cooling water course that the multilayer set up can, the cooling of wider messenger's cylinder cap, and the whole refrigerated efficiency of cylinder cap improves.

Furthermore, a second cooling water channel for unidirectional circulation of cooling water is arranged in the cylinder body, the cylinder body is made of the same or similar material as the cylinder cover, and unidirectional circulating cooling water is introduced into the cooling water channel to reduce the temperature of the cylinder body.

Furthermore, the second cooling water channel comprises three layers of water channels with different heights, the single layers of water channels with different heights are communicated through a second vertical water channel, a water inlet of the second cooling water channel is formed in the lower surface of the bottom end of the cylinder body, a water outlet of the second cooling water channel is formed in the side surface of the bottom end of the cylinder body, the three layers of second cooling water channels are reasonably arranged aiming at the cylinder body with the I-shaped structure, and therefore the whole cylinder body can be fully cooled by circulating cooling water.

The diaphragm compressor can make the gas temperature rise in the equipment, and the cylinder of diaphragm compressor has strict service temperature requirement, and when the temperature was higher than a certain threshold value, the unable normal operating of cylinder, equally too high temperature also can not satisfy the requirement of safety in production, so good cooling system is the guarantee of diaphragm compressor cylinder normal operating.

The high-temperature gas is easy to generate hydrogen embrittlement phenomenon on the sealing surface of the cylinder, so that the cylinder needs to use a high-content hydrogen embrittlement-resistant material, but if a good cylinder cooling system is provided, the use of the hydrogen embrittlement-resistant material can be greatly reduced.

The invention has the beneficial effects that:

set up clamp and jackscrew to cooperate the cylinder body and the cylinder cap of corresponding shape, through the radial movement of clamp restriction cylinder body and cylinder cap, the axial displacement of rethread jackscrew structure restriction cylinder cap makes cylinder body and cylinder cap fixed connection:

(1) the clamp and the jackscrew are matched to replace the original mode of fixedly connecting the cylinder cover and the cylinder body through a bolt with a larger diameter, so that the overall structure is reduced, and space resources are saved;

(2) the vertical direction of most bolt pre-tightening torque is changed into the horizontal direction, the pre-tightening torque is reduced, the torque required to be applied by the working personnel during installation is reduced, the pre-tightening force required by the curved surface of the die cavity can be met, and the situation that the working personnel need to use a large labor-saving wrench is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic perspective view of a cylinder head;

FIG. 4 is a schematic perspective view of the cylinder;

wherein, 1, a cylinder cover; 11. a gasket; 2. a cylinder body; 3. a clamp structure; 31. a clamp bolt; 4. a jackscrew structure; 41. a jackscrew thread insert; 42. a jackscrew tool; 5. a first cooling channel; 51. a first vertical flume; 6. a second cooling channel; 61. a second vertical flume.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Example (b):

fig. 1-4 show a diaphragm compressor cylinder with a hoop and a jackscrew provided by the invention, which comprises a cylinder body 2 and a cylinder cover 1, wherein the lower part of the cylinder cover 1 is provided with a convex edge, so that the cylinder cover 1 is in an inverted T shape, the side wall of the cylinder body 2 is provided with a groove, so that the cylinder body 2 is in an i shape, the upper surface of the cylinder body 2 and the lower surface of the cylinder cover 1 jointly form a film cavity curved surface, a diaphragm is arranged in the film cavity curved surface, and the cylinder body 2 is provided with a hole for placing a piston pair or a plunger pair; still include clamp structure 3 and jackscrew structure 4, clamp structure 3 comprises two at least clamp piece fixed connection, the top on protruding edge is caught on clamp structure 3's upper end, clamp structure 3's lower extreme card is in the recess, clamp structure 3's interior edge and

cylinder cap

1 and 2 cooperations of cylinder body and then has restricted cylinder cap 1 and the radial movement of cylinder body 2, jackscrew structure 4 exerts the axial thrust to cylinder cap 1 and restricts the axial displacement of cylinder cap 1, clamp structure 3 and jackscrew structure 4 mutually support and make

cylinder cap

1 and 2 fixed connection and reach the requirement of 1 pretightning force of cylinder cap 1. Jackscrew structure 4 includes jackscrew swivel nut 41 and jackscrew instrument 42, and the upper end of clamp structure 3 is equipped with the jackscrew hole with jackscrew instrument 42 matched with, and jackscrew swivel nut 41 sets up the upper end at clamp structure 3, and jackscrew instrument 42 passes jackscrew swivel nut 41 and jackscrew hole, and the lower extreme of jackscrew instrument 42 can butt the upper end on protruding edge, screws up jackscrew instrument 42 and makes jackscrew instrument 42 downstream, and it makes cylinder cap 1 fixed with cylinder body 2 to exert decurrent pressure to protruding edge.

The jackscrew structure 4 still includes setting up the packing ring 11 in the upper end of protruding edge, and packing ring 11 is evenly distributed on cylinder cap 1 by the top surface with the jacking force that jackscrew instrument 42 produced, avoids jackscrew instrument 42 directly to contradict cylinder cap 1 to make the jacking force of production concentrate and lead to cylinder cap 1 to warp, and is the same, in order to avoid packing ring 11 to receive jackscrew instrument 42 jacking force to concentrate and lead to warping, and packing ring 11 needs to adopt the material of high rigidity.

The upper wall slope of recess, the interior slope of edge of the lower extreme of clamp structure 3 and with the upper wall cooperation of recess, through the cooperation between the inclined plane, the radial movement of restriction cylinder body guarantees the structural stability of cylinder.

The clamp blocks are fixedly connected by clamp bolts 31.

The axis of the band bolt 31 is parallel to the horizontal plane.

The inside of cylinder cap 1 is equipped with the first cooling water course 5 that can supply the one-way circulation of cooling water, forms the first cooling water course 5 of broken line type through drilling technology, and first cooling water course 5 encircles 1 a week of cylinder cap as far as possible under the condition of guaranteeing 1 overall structure stability of cylinder cap, makes cylinder cap 1 everywhere can both fully cool off, for the convenience of cooling water from the inside of side business turn over cylinder cap 1, is equipped with the limbers that supplies the cooling water business turn over first cooling water course 5 on the clamp structure 3.

First cooling water course 5 includes the at least two-layer water course of high difference, through first vertical water course 51 intercommunication between the not individual layer water course of co-altitude, compares in the cooling water course of individual layer, and the cooling water course that the multilayer set up can, the more cooling of wider messenger cylinder cap 1, and the whole refrigerated efficiency of cylinder cap 1 improves.

The inside of cylinder body 2 is equipped with the second cooling water course 6 that can supply the one-way circulation of cooling water, and cylinder body 2 is the same with the cylinder cap 1 material or similar, lets in the cooling water of one-way circulation in the cooling water course and makes the temperature of cylinder body 2 reduce.

Second cooling water course 6 includes the three-layer water course of high difference, through the vertical water course 61 intercommunication of second between the single-layer water course of different heights, and the water inlet setting of second cooling water course 6 is at the lower surface of the bottom of cylinder body 2, and the delivery port setting of second cooling water course 6 is at the side surface of the bottom of cylinder body 2, to being cylinder body 2 of "worker" style of calligraphy structure, rationally sets up three-layer second cooling water course 6, makes whole cylinder body 2 fully cooled by the cooling water of circulation.

The working principle is as follows:

the cylinder cover 1 and the cylinder body 2 are arranged on the same axis, all clamp blocks are fixedly connected and combined into a clamp structure 3 through horizontally arranged bolts, the cylinder cover 1 and the cylinder body 2 are enclosed at the inner side of the clamp, the radial movement of the cylinder body 2 and the cylinder cover 1 is limited by the clamp structure 3, the axial movement of the cylinder body 2 and the cylinder cover 1 is primarily limited, and the movement of the cylinder body 2 and the cylinder cover 1 is further limited by the inclined plane at the lower side of the inner edge of the clamp; after the installation of clamp structure 3 is accomplished, twist the jackscrew hole that changes jackscrew instrument 42 and pass the clamp upper end, make the lower extreme of jackscrew instrument 42 conflict and predetermine packing ring 11 on cylinder cap 1, jackscrew instrument 42 is screwed up and is made cylinder cap 1 receive decurrent pressure, the axial displacement of cylinder cap 1 and cylinder body 2 has further been restricted, whole installation mainly exerts pretension moment to clamp bolt 31 and exerts pretension moment to jackscrew instrument 42, satisfy cylinder cap 1 and cylinder body 2's pretightning force requirement, the original mode of only exerting pretension moment through to jumbo size bolt has been replaced, the pretension moment that need apply when having reduced the installation, make the staff not need the big spanner of practical laborsaving proportion to screw up the bolt, overall structure's volume has been reduced simultaneously, space resources are saved.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "upper", "lower", "left", "right" and the like are used herein for illustrative purposes only.

Claims

1. The diaphragm compressor cylinder with the hoop and the jackscrew is characterized by comprising a cylinder body and a cylinder cover, wherein a convex edge is arranged at the lower part of the cylinder cover, and a groove is arranged on the side wall of the cylinder body; still include clamp structure and jackscrew structure, the clamp structure comprises two at least clamp piece fixed connection, the upper end of clamp structure is caught the top on protruding edge, the lower extreme card of clamp structure is in the recess, the jackscrew structure sets up the upper end of clamp structure just the jackscrew structure can be right the cylinder cap is applyed decurrent jacking force.

2. The diaphragm compressor cylinder with clamp and jackscrew of claim 1, wherein the jackscrew structure comprises a jackscrew thread sleeve and a jackscrew tool, the upper end of the clamp structure is provided with a jackscrew hole matched with the jackscrew tool, the jackscrew thread sleeve is arranged at the upper end of the clamp structure, the jackscrew tool passes through the jackscrew thread sleeve and the jackscrew hole, and the lower end of the jackscrew tool can abut against the upper end of the convex edge.

3. The diaphragm compressor cylinder with a clamp and a jackscrew of claim 2, wherein the jackscrew structure further comprises a washer disposed at an upper end of the ledge.

4. The diaphragm compressor cylinder with clamp and jackscrew of claim 1, wherein the upper wall of the groove is sloped and the inner edge of the lower end of the clamp structure is sloped and engages the upper wall of the groove.

5. The diaphragm compressor cylinder with a clamp and a jackscrew of claim 1, wherein the clamp block is fixedly connected by a clamp bolt.

6. The diaphragm compressor cylinder with yoke and jackscrew of claim 5, wherein the axis of the yoke bolt is parallel to the horizontal plane.

7. The diaphragm compressor cylinder with clamp band and jackscrew of claim 1, wherein the inside of said cylinder cover is provided with a first cooling water channel for unidirectional flow of cooling water.

8. The diaphragm compressor cylinder according to claim 7, wherein the first cooling channel comprises at least two layers of channels having different heights, the single layers of channels having different heights communicating with each other through a first vertical channel.

9. The diaphragm compressor cylinder with clamp band and jackscrew of claim 1, wherein the inside of the cylinder body is provided with a second cooling water passage through which cooling water flows in one direction.

10. The diaphragm compressor cylinder with the clamp and the jackscrew according to claim 9, wherein the second cooling water passage comprises three water passages having different heights, the single water passages having different heights communicate with each other through a second vertical water passage, an inlet of the second cooling water passage is disposed at a lower surface of the bottom end of the cylinder body, and an outlet of the second cooling water passage is disposed at a side surface of the bottom end of the cylinder body.