CN217682214U

CN217682214U - Unloader for reciprocating compressor

Info

Publication number: CN217682214U
Application number: CN202220523781.2U
Authority: CN
Inventors: 吴越
Original assignee: Shanghai Aoteng Industrial Co ltd; Aoteng Energy Technology Development Suzhou Co ltd
Current assignee: Shanghai Aoteng Industrial Co ltd; Aoteng Energy Technology Development Suzhou Co ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-10-28
Anticipated expiration: 2032-03-11

Abstract

The utility model relates to an unloader for reciprocating compressor belongs to compressor technical field. The technical scheme is that the unloading device mainly aims at the problems that the unloading of the existing reciprocating compressor unloader is realized by utilizing the thrust of a spring, namely the elastic force of the spring is very important, the elastic force can be reduced along with the long-time use of the spring, the unloading effect can be reduced, and the elastic force of the spring cannot be directly sensed under the condition of reduction, and the unloading device has the advantages that: including first valve body and valve gap, the lid inner face an organic whole of valve gap is equipped with the flange, the flange outside cover is equipped with the arc connection piece, the both ends of arc connection piece all are connected with an inductor installation base block, every the surface of inductor installation base block all rabbets and has a pressure sensors. The utility model discloses can carry out the perception to the elastic property of spring, conveniently master the use degree of spring to in time change the spring that uses excessively, in order to avoid influencing the off-load effect.

Description

Unloader for reciprocating compressor

Technical Field

The utility model relates to a compressor technical field especially relates to an unloader for reciprocating compressor.

Background

The reciprocating compressor is a compressor which can make the volume of cylinder body change periodically by means of reciprocating movement of piston or diaphragm in the cylinder and can implement pressurization and delivery of gas. The unloader is an important component for adjusting the load of the reciprocating compressor and reducing the energy consumption of the compressor according to the use requirement of the process, and the unloader can adjust the load of the compressor by opening and closing an air inlet valve of the compressor through the reciprocating action of a valve rod. In the unloading device of the reciprocating compressor disclosed in the publication No. CN208364933U, when the unloading of the reciprocating compressor is required, the passage of nitrogen to the second valve body is in a cut-off state, and the valve rod is driven to move to the bottom dead center under the action of the urging force of the spring, so that the intake valve is forcibly opened to realize the unloading. That is, the elastic force of the spring is important, and the elastic force is reduced with the long-term use of the spring, the unloading effect is reduced, and the elastic force of the spring cannot be directly sensed when the elastic force is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the problem that exists among the background art, provide an unloader for reciprocating compressor.

The technical scheme of the utility model: the utility model provides an unloader for reciprocating compressor, includes first valve body and valve gap, the lid inner face an organic whole of valve gap is equipped with the flange, flange outside cover is equipped with the arc connection piece, the both ends of arc connection piece all are connected with an inductor installation base block, every the surface of inductor installation base block all is rabbeted and is had a pressure sensors.

Preferably, the opposite surfaces of the two sensor mounting base blocks are connected with positioning clamping blocks, and the outer surface of the flange is provided with positioning clamping grooves matched with the positioning clamping blocks.

Preferably, the first valve body endotheca is equipped with the valve rod, the valve gap is provided with a pair ofly, two be connected with the second valve body between the valve gap, one of them the end connection of valve gap and first valve body, another the valve gap is connected with the gland, the one end of valve rod is connected with the guide post after stretching into the inside of second valve body, the guide post docks with the gland.

Preferably, a spring is sleeved outside the guide post, and one end of the spring is pressed on the pressure sensor.

Preferably, the outer end of the gland is connected with a scale cylinder, an indicating rod is movably embedded in the gland, one end of the indicating rod is connected with the guide column, and the other end of the indicating rod extends into the scale cylinder.

Preferably, the end portion of the indicating rod, which is located inside the scale drum, is connected with a connecting shaft, one end, which is far away from the indicating rod, of the connecting shaft is connected with an indicating bead, scale marks are arranged on the outer surface of the scale drum, and the indicating bead corresponds to the scale marks.

Preferably, the middle part of connecting axle is provided with the guide ring, be connected with the guide bar between the both ends inner wall of a scale section of thick bamboo, just the guide bar cup joints with the guide ring activity.

Preferably, the one end that the guide post is close to the indicator pole is rotated and is connected with the switching post, the one end fixedly connected with spiral shell axle of switching post, the guide post is close to the terminal surface of indicator pole and offers the spiral shell groove that can with spiral shell axle screwed connection.

Compared with the prior art, the beneficial effects of the utility model are that:

(1): the spring unloading device can sense the elastic performance of the spring, and the using degree of the spring can be conveniently mastered, so that the spring which is used excessively can be replaced in time, and the unloading effect is prevented from being influenced;

(2): the application can directly observe the advancing position of the valve rod outside through the design of structures such as the indicating rod and the scale drum.

Drawings

FIG. 1 is a schematic view showing the construction of an unloader for a reciprocating compressor;

FIG. 2 is a side view schematic of the connection of the pressure sensor and the valve cover of FIG. 1;

fig. 3 is a connection sectional view of a portion of the structure of fig. 1.

Reference numerals: 1. a first valve body; 2. a valve stem; 3. a second valve body; 4. a valve cover; 41. a flange; 5. a gland; 6. a guide post; 7. a spring; 8. a pressure sensor; 9. an indication lever; 10. a scale drum; 11. scale lines; 12. installing a base block on the inductor; 13. an arc-shaped connecting sheet; 14. bolt holes; 15. positioning a fixture block; 16. positioning a clamping groove; 17. a connecting shaft; 18. an indicator bead; 19. a guide ring; 20. a guide bar; 21. a transfer column; 22. a screw shaft; 23. and (4) a spiral groove.

Detailed Description

The following describes the technical solution of the present invention with reference to the accompanying drawings and specific embodiments.

Example one

As shown in fig. 1-3, the utility model provides an unloader for reciprocating compressor, including first valve body 1 and valve gap 4, the cover is equipped with valve rod 2 in the first valve body 1, and valve gap 4 is provided with a pair ofly altogether, is connected with second valve body 3 between two valve gaps 4, and one of them valve gap 4 and the end connection of first valve body 1, another valve gap 4 are connected with gland 5, and the one end of valve rod 2 is connected with guide post 6 after stretching into the inside of second valve body 3, and guide post 6 docks with gland 5. The cover inner face of valve gap 4 is integrative to be equipped with flange 41, and the cover outside flange 41 is equipped with arc connection piece 13, and arc connection piece 13 passes through bolt and valve gap 4 fixed connection, and arc connection piece 13 is equipped with at least one bolt hole 14. Inductor installation base block 12 of equal fixedly connected with in both ends of arc connection piece 13, the surface of every inductor installation base block 12 all has a pressure sensors 8 through bolt fastening scarf joint, the outside cover of guide post 6 is equipped with spring 7, and the one end of spring 7 is pressed on pressure sensors 8, through the thrust data that 8 perception springs 7 of pressure sensors applied, the outside display device who sets up and 8 electric connection of pressure sensors of unloader for the pressure data that 8 perceptions of pressure sensors arrived of visual display. The opposite surfaces of the two inductor installation base blocks 12 are connected with positioning fixture blocks 15, positioning clamp grooves 16 matched with the positioning fixture blocks 15 are formed in the outer surfaces of the flanges 41, and one ends of the positioning clamp grooves 16 are communicated with the end surfaces of the flanges 41.

In this embodiment, when the reciprocating compressor requires unloading, the passage of nitrogen gas into the second valve body 3 is in a cut-off state, and the valve rod 2 is driven to move to the bottom dead center under the action of the elastic thrust of the spring 7, so that the air inlet valve is forcibly opened, thereby realizing unloading. Spring 7 also can receive valve rod 2's thrust reversal at the in-process that pushes away valve rod 2, this thrust directly transmits pressure sensors 8 on, this pressure information of pressure sensors 8 perception, along with spring 7's elasticity performance reduces, the elastic thrust that spring 7 can apply can reduce, the pressure that pressure sensors 8 perception arrived also can reduce, consequently, the in service behavior of spring 7 can be monitored to the pressure data through pressure sensors 8 perception, in time change the too much spring 7 of performance reduction.

Example two

As shown in fig. 1-3, the utility model provides an unloader for reciprocating compressor, including first valve body 1 and valve gap 4, the cover is equipped with valve rod 2 in the first valve body 1, and valve gap 4 is provided with a pair ofly altogether, is connected with second valve body 3 between two valve gaps 4, and one of them valve gap 4 and the end connection of first valve body 1, another valve gap 4 are connected with gland 5, and the one end of valve rod 2 is connected with guide post 6 after stretching into the inside of second valve body 3, and guide post 6 docks with gland 5. The cover inner face of valve gap 4 is integrative to be equipped with flange 41, and the cover outside flange 41 is equipped with arc connection piece 13, and arc connection piece 13 passes through bolt and valve gap 4 fixed connection, and arc connection piece 13 is equipped with at least one bolt hole 14. Inductor installation base block 12 of the equal fixedly connected with in both ends of arc connection piece 13, the surface of every inductor installation base block 12 all has a pressure sensors 8 through the bolt fastening scarf joint, the outside cover of guide post 6 is equipped with spring 7, and the one end of spring 7 is pressed on pressure sensors 8, through the thrust data that 8 perception springs 7 of pressure sensors were applyed, the outside display device who sets up and 8 electric connection of pressure sensors of unloader for the pressure data that 8 perceptions of visual display pressure sensors arrived. The opposite surfaces of the two inductor mounting base blocks 12 are connected with positioning clamping blocks 15, positioning clamping grooves 16 matched with the positioning clamping blocks 15 are formed in the outer surface of the flange 41, and one end of each positioning clamping groove 16 is communicated with the end face of the flange 41.

Compared with the first embodiment, the present embodiment further includes: the outer end fixedly connected with scale section of thick bamboo 10 of gland 5, the inside activity scarf joint of gland 5 has indicator 9, and the left end of indicator 9 is rotated and is connected with switching post 21, and the left end fixedly connected with spiral shell axle 22 of switching post 21, the right-hand member face of guide post 6 is seted up can with spiral shell axle 22 screwed connection's spiral groove 23.

In this embodiment, through the indicator 9 and the scale drum 10, the position where the valve rod 2 is located is convenient to observe, that is, the travel distance of the valve rod 2 can be observed, and the position of the valve rod 2 can be clearly determined by the size of the residual space between the indicator 9 and the scale drum 10.

EXAMPLE III

As shown in fig. 1-3, the utility model provides an unloader for reciprocating compressor, including first valve body 1 and valve gap 4, the cover is equipped with valve rod 2 in the first valve body 1, and valve gap 4 is provided with a pair ofly altogether, is connected with second valve body 3 between two valve gaps 4, and one of them valve gap 4 and the end connection of first valve body 1, another valve gap 4 are connected with gland 5, and the one end of valve rod 2 is connected with guide post 6 after stretching into the inside of second valve body 3, and guide post 6 docks with gland 5. The cover inner face of valve gap 4 is integrative to be equipped with flange 41, and the cover outside flange 41 is equipped with arc connection piece 13, and arc connection piece 13 passes through bolt and valve gap 4 fixed connection, and arc connection piece 13 is equipped with at least one bolt hole 14. Inductor installation base block 12 of the equal fixedly connected with in both ends of arc connection piece 13, the surface of every inductor installation base block 12 all has a pressure sensors 8 through the bolt fastening scarf joint, the outside cover of guide post 6 is equipped with spring 7, and the one end of spring 7 is pressed on pressure sensors 8, through the thrust data that 8 perception springs 7 of pressure sensors were applyed, the outside display device who sets up and 8 electric connection of pressure sensors of unloader for the pressure data that 8 perceptions of visual display pressure sensors arrived. The opposite surfaces of the two inductor mounting base blocks 12 are connected with positioning clamping blocks 15, positioning clamping grooves 16 matched with the positioning clamping blocks 15 are formed in the outer surface of the flange 41, and one end of each positioning clamping groove 16 is communicated with the end face of the flange 41. The outer end fixedly connected with scale section of thick bamboo 10 of gland 5, the inside activity scarf joint of gland 5 has indicator 9, and the left end of indicator 9 is rotated and is connected with switching post 21, and the left end fixedly connected with spiral shell axle 22 of switching post 21, the right-hand member face of guide post 6 is seted up can with spiral shell axle 22 screwed connection's spiral groove 23.

Compared with the first or second embodiment, the present embodiment further includes: the right-hand member of instruction lever 9 stretches into a pair of connecting axle 17 of fixedly connected with behind the inside of scale section of thick bamboo 10, and the end that deviates from of two connecting axles 17 indicates pearl 18 one of the equal fixedly connected with of end, and the surface of scale section of thick bamboo 10 is provided with scale mark 11, and indicates that pearl 18 corresponds with scale mark 11 position. The middle part of the connecting shaft 17 is provided with a guide ring 19, a guide rod 20 is connected between the inner walls of the two ends of the scale drum 10, and the guide rod 20 is movably sleeved with the guide ring 19.

In this embodiment, the scale drum 10 is made of transparent materials such as glass, and the position of the indication bead 18 can be directly observed from the outside, so that the position data of the end part of the indication rod 9 can be directly indicated through the indication bead 18 and the scale lines 11, and the position of the valve rod 2 can be determined more accurately.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art.

Claims

1. The utility model provides an unloader for reciprocating compressor, includes first valve body (1) and valve gap (4), its characterized in that: the cover inner face of valve gap (4) an organic whole is equipped with flange (41), flange (41) outside cover is equipped with arc connection piece (13), the both ends of arc connection piece (13) all are connected with an inductor installation base block (12), every the surface of inductor installation base block (12) all is rabbeted and is had a pressure sensors (8).

2. The unloader for the reciprocating compressor according to claim 1, wherein opposite faces of the two sensor mounting base blocks (12) are connected with positioning clamping blocks (15), and a positioning clamping groove (16) matched with the positioning clamping blocks (15) is formed in the outer surface of the flange (41).

3. The unloader for the reciprocating compressor according to claim 1, wherein a valve rod (2) is sleeved in the first valve body (1), a pair of valve covers (4) are arranged, a second valve body (3) is connected between the two valve covers (4), one of the valve covers (4) is connected with the end of the first valve body (1), the other valve cover (4) is connected with a gland (5), one end of the valve rod (2) extends into the second valve body (3) and then is connected with a guide column (6), and the guide column (6) is in butt joint with the gland (5).

4. An unloader for a reciprocating compressor according to claim 3, wherein a spring (7) is sleeved outside the guide post (6), and one end of the spring (7) presses on the pressure sensor (8).

5. An unloader for a reciprocating compressor according to claim 3, wherein a scale drum (10) is connected to the outer end of the gland (5), an indicating rod (9) is movably embedded in the gland (5), one end of the indicating rod (9) is connected with the guide post (6), and the other end of the indicating rod (9) extends into the scale drum (10).

6. The unloader for the reciprocating compressor according to claim 5, wherein a connecting shaft (17) is connected to an end portion of the indication rod (9) located inside the scale drum (10), an indication ball (18) is connected to one end, far away from the indication rod (9), of the connecting shaft (17), a scale mark (11) is arranged on the outer surface of the scale drum (10), and the indication ball (18) corresponds to the scale mark (11) in position.

7. The unloader for the reciprocating compressor according to claim 6, wherein a guide ring (19) is arranged in the middle of the connecting shaft (17), a guide rod (20) is connected between the inner walls of the two ends of the scale drum (10), and the guide rod (20) is movably sleeved with the guide ring (19).

8. The unloader for the reciprocating compressor according to claim 5, wherein an adapter column (21) is rotatably connected to one end of the indication rod (9) close to the guide column (6), a screw shaft (22) is fixedly connected to one end of the adapter column (21), and a screw groove (23) capable of being in screw connection with the screw shaft (22) is formed in an end face of the guide column (6) close to the indication rod (9).