CN209925185U - Single-action liquid-filled type clearance stepless adjusting actuating mechanism - Google Patents
Single-action liquid-filled type clearance stepless adjusting actuating mechanism Download PDFInfo
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- CN209925185U CN209925185U CN201920555642.6U CN201920555642U CN209925185U CN 209925185 U CN209925185 U CN 209925185U CN 201920555642 U CN201920555642 U CN 201920555642U CN 209925185 U CN209925185 U CN 209925185U
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Abstract
The utility model relates to a single-action liquid-filled type clearance stepless regulation actuating mechanism. The single-action liquid-filled type clearance stepless adjusting actuating mechanism comprises an actuating mechanism shell, a clearance piston, a sealing assembly, a displacement sensor and a liquid filling control unit. The clearance piston of the single-action liquid-filled clearance stepless adjusting actuating mechanism is not driven by a piston rod, but the volume of the clearance volume cavity is correspondingly adjusted by adjusting the volume of the liquid filling cavity, so that the integral structure is greatly shortened, the adjustment is convenient, and the use is safe and flexible.
Description
Technical Field
The utility model relates to a reciprocating compressor tolerance adjusts technical field, especially relates to a single-action liquid filling formula clearance infinitely variable control actuating mechanism.
Background
The reciprocating compressor needs to be able to adjust the displacement within a certain range to meet the production requirements. The clearance adjustment air quantity is a common adjustment mode, the volume coefficient of the compressor is changed by adjusting the clearance of the compressor cylinder, so that the adjustment of the air quantity of the compressor is realized, and the air quantity adjusting device has the advantages of small investment, reliable performance and the like. The clearance stepless adjusting technology is characterized in that a compressor cylinder cover is replaced by a clearance adjusting actuating mechanism, the actuating mechanism is driven to obtain a clearance volume with a proper size, the adjustment is convenient, and the performance is excellent.
The clearance cavity volume of the clearance stepless adjusting actuator is controlled by the clearance cylinder barrel and the movable piston. The existing movable pistons are all provided with piston rods and are driven and locked in a hydraulic, electric, pneumatic, mechanical and other modes. Therefore, the actuating mechanism is long in structure and heavy in weight, some actuating mechanisms need to be additionally supported, and the inspection and maintenance space is even influenced after some actuating mechanisms are transformed.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a remedy prior art not enough, provide a single action liquid filling formula clearance infinitely variable control actuating mechanism, the clearance piston does not pass through the piston rod drive, but utilizes the volume of adjusting the liquid filling chamber to correspond the volume of adjusting clearance volume chamber, has solved the problem that exists among the prior art.
The utility model discloses a realize through following technical scheme:
a single-action liquid-filling type clearance stepless adjusting actuating mechanism comprises an actuating mechanism shell, a clearance piston, a sealing assembly, a displacement sensor and a liquid-filling control unit;
the clearance piston divides the actuating mechanism shell into a clearance volume cavity and a liquid filling cavity, and the liquid filling cavity is connected with the liquid filling control unit;
the liquid filling control unit and the displacement sensor are matched to control the liquid filling amount in the liquid filling cavity, and further the volume of the clearance volume cavity is adjusted.
The sealing assembly is arranged between the clearance piston and the actuating mechanism shell and is used for preventing liquid media in the liquid filling cavity from leaking.
The single-action liquid-filled type clearance stepless adjusting actuating mechanism further comprises a leakage monitoring cavity, the sealing assembly is arranged between the clearance piston and the actuating mechanism shell on two sides of the leakage monitoring cavity, and the leakage monitoring cavity is used for monitoring the sealing performance of the sealing assembly.
The liquid charging control unit comprises a liquid charging cavity outlet valve, a flow limiting valve, an overflow valve, an oil tank, a hydraulic pump, a one-way valve, an energy accumulator, a liquid charging cavity inlet valve and a pipeline.
The liquid filling cavity is formed by a clearance piston end surface and an inner surface of an actuating mechanism shell.
And a cavity recessed into the end face of the clearance piston is arranged on the clearance piston, and the cavity and the corresponding inner surface of the actuating mechanism shell form the liquid filling cavity.
The liquid medium of the liquid-filling control unit is hydraulic oil, compressor lubricating oil or a liquid medium with the boiling point higher than the highest working temperature of a compressor cylinder.
And a stroke limiting stop ring is arranged on the actuating mechanism shell on one side of the clearance volume cavity.
The limit stop ring is used for preventing the collision between the clearance piston and the compressor piston.
The single-action liquid-filled type clearance stepless adjusting actuating mechanism further comprises a heat exchange assembly, and the heat exchange assembly is arranged in the liquid-filled cavity.
The heat exchange assembly is used for cooling the actuating mechanism, the service life of the sealing assembly can be prolonged, the index of the compression process is reduced, the compression work is saved, and the working temperature of the liquid filling cavity is stabilized.
The heat exchange assembly is a heat exchange coil.
The single-action liquid-filled type clearance stepless adjusting actuating mechanism further comprises a pressure sensor and/or a temperature sensor.
The pressure sensor and the temperature sensor are arranged on an inner end cover of the actuating mechanism shell in the liquid filling cavity.
The utility model has the advantages that:
the single-action liquid-filling type clearance stepless adjusting actuating mechanism correspondingly adjusts the volume of the clearance volume cavity by adjusting the volume of the liquid filling cavity, does not need to drive the clearance piston through a piston rod, does not drive the piston rod and an oil piston, and shortens the axial length of the actuating mechanism. The liquid medium in the liquid filling cavity can play a role in buffering the clearance piston, so that the service life of the actuating mechanism can be prolonged; the stroke limiting baffle ring arranged on the actuating mechanism shell can prevent the clearance piston from colliding with the compressor piston; by providing leak monitoring, it is possible to monitor whether the seal assembly is failing. The actuating mechanism has the advantages of compact structure, convenient adjustment, safety and reliability.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of the fill level control unit of FIG. 1;
FIG. 3 is a schematic structural view of a housing of the actuator of FIG. 1;
fig. 4 is a schematic structural diagram of embodiment 2 of the present invention.
In the figure, a liquid filling control unit 1, a displacement sensor 2, an actuator shell 3, a clearance piston 4, a sealing assembly 5, a leakage monitoring cavity 6, a liquid filling cavity 7, a clearance volume cavity 8, a heat exchange coil 9, a pressure sensor 10, a temperature sensor 11, a liquid filling cavity outlet valve 1-1, a flow limiting valve 1-2, an overflow valve 1-3, an oil tank 1-4, a hydraulic pump 1-5, a check valve 1-6, an energy accumulator 1-7, a liquid filling cavity inlet valve 1-8, a distance limiting stop ring 3-1, an actuator cylinder 3-2, a liquid filling cavity outlet 3-3, an actuator end cover 3-4, a liquid filling cavity inlet 3-5, a leakage monitoring port 3-6, a connecting flange 3-7 and an actuator shell inner cavity 3-8.
Detailed Description
In order to clearly illustrate the technical features of the present invention, the present invention is explained in detail by the following embodiments in combination with the accompanying drawings.
Example 1
As shown in fig. 1-3, the single-acting liquid-filled clearance stepless adjustment actuator is composed of a liquid-filled control unit 1, a displacement sensor 2, an actuator housing 3, a clearance piston 4, a seal assembly 5 and a pipeline. The liquid charging control unit 1 mainly comprises a liquid charging cavity outlet valve 1-1, a flow limiting valve 1-2, an overflow valve 1-3, an oil tank 1-4, a hydraulic pump 1-5, a one-way valve 1-6, an energy accumulator 1-7, a liquid charging cavity inlet valve 1-8 and a pipeline.
And a cavity recessed into the end face of the clearance piston is arranged on one end face of the clearance piston 4, and the cavity and the corresponding inner surface of the actuating mechanism shell form the liquid filling cavity 7. And a leakage monitoring cavity 6 is arranged on the side wall of the contact surface of the clearance piston 4 and the executing mechanism shell, and an output pipeline communicated with the leakage monitoring cavity is arranged on the side wall of the executing mechanism shell. Once the tightness of the clearance piston is in problem, leakage liquid enters the leakage monitoring cavity and then flows out of an output pipeline.
The two groups of sealing assemblies 5 are respectively arranged on two sides of the leakage monitoring cavity 6.
The displacement sensor 2 is connected with the inner side wall of the clearance piston on one side of the liquid filling cavity and used for determining the position of the clearance piston relative to the actuating mechanism shell.
In the initial state, the outlet valve 1-1 of the liquid charging cavity and the inlet valve 1-8 of the liquid charging cavity are opened, the liquid charging cavity 7 is filled with liquid medium by using the hydraulic pump 1-5, gas in the liquid charging cavity is exhausted, and the outlet valve 1-1 of the liquid charging cavity and the inlet valve 1-8 of the liquid charging cavity are closed. In the working state, the proper clearance volume is determined according to the requirement of the air quantity of the compressor, and then the clearance volume is converted into the position of the clearance piston. If the clearance volume needs to be increased, opening an outlet valve 1-1 of the liquid filling cavity, pushing a clearance piston 4 to move by using the gas pressure at the side of a compressor cylinder, reducing the liquid filling amount, and controlling the outlet valve 1-1 of the liquid filling cavity to be closed according to the position of the clearance piston obtained by a displacement sensor 2; if the clearance volume needs to be reduced, opening inlet valves 1-8 of the liquid filling cavity, pushing the clearance piston 4 to move by using the medium pressure of the hydraulic pumps 1-5 or the energy accumulators 1-7, increasing the liquid filling amount, and controlling the inlet valves 1-8 of the liquid filling cavity to be closed according to the position of the clearance piston obtained by the displacement sensor 2. The liquid filling control unit 1 and the displacement sensor 2 are used for controlling the liquid filling amount in the liquid filling cavity 7, so that the volume stepless regulation of the clearance volume cavity can be realized, and the requirement of the reciprocating compressor on the gas amount stepless regulation is met.
A leakage monitoring cavity 6 is formed by the side surface of the clearance piston 4 and the actuating mechanism shell 3 and is used for monitoring whether the sealing assembly fails or not and ensuring the safe operation of the actuating mechanism. The actuating mechanism shell 3 is provided with a limit stop ring 3-1 to prevent the collision between a clearance piston and a compressor piston; connecting flanges 3-7 are provided for connection with the compressor cylinder. The leakage monitoring cavity 6, the liquid filling cavity 7 and the clearance volume cavity 8 are sealed through the sealing assembly 5.
The sealing assembly 5 may be a sealing ring.
Example 2
As shown in fig. 4, the single-acting liquid-filled clearance stepless adjustment actuator is a single-acting liquid-filled clearance stepless adjustment actuator with a heat exchange coil 9. The actuating mechanism comprises a liquid filling control unit 1, a displacement sensor 2, an actuating mechanism shell 3, a clearance piston 4, a sealing assembly 5, a heat exchange coil 9, a pressure sensor 10, a temperature sensor 11, a pipeline and the like. The liquid charging control unit 1 mainly comprises a liquid charging cavity outlet valve 1-1, a flow limiting valve 1-2, an overflow valve 1-3, an oil tank 1-4, a hydraulic pump 1-5, a one-way valve 1-6, an energy accumulator 1-7, a liquid charging cavity inlet valve 1-8 and a pipeline.
And a cavity recessed into the end face of the clearance piston is arranged on one end face of the clearance piston 4, and the cavity and the corresponding inner surface of the actuating mechanism shell form the liquid filling cavity 7. And a leakage monitoring cavity 6 is arranged on the side wall of the contact surface of the clearance piston 4 and the executing mechanism shell, and an output pipeline communicated with the leakage monitoring cavity is arranged on the side wall of the executing mechanism shell.
The two groups of sealing assemblies 5 are respectively arranged on two sides of the leakage monitoring cavity 6.
A supporting rod is arranged on the side wall of the clearance piston at one side of the liquid filling cavity, and the displacement sensor 2 is arranged on the supporting rod; the heat exchange coil 9 is arranged outside the supporting rod.
In the initial state, the outlet valve 1-1 of the liquid charging cavity and the inlet valve 1-8 of the liquid charging cavity are opened, the liquid charging cavity is filled with liquid medium by using the hydraulic pump 1-5, gas in the liquid charging cavity is exhausted, and the outlet valve 1-1 of the liquid charging cavity and the inlet valve 1-8 of the liquid charging cavity are closed. In the working state, the proper clearance volume is determined according to the requirement of the air quantity of the compressor, and then the clearance volume is converted into the position of the piston. If the clearance volume needs to be increased, opening an outlet valve 1-1 of the liquid filling cavity, pushing a clearance piston to move by using the gas pressure at the side of a compressor cylinder, reducing the liquid filling amount, and controlling the outlet valve 1-1 of the liquid filling cavity to be closed according to a displacement sensor 2; if the clearance volume needs to be reduced, opening inlet valves 1-8 of the liquid charging cavity, pushing the clearance piston to move by using the medium pressure of a hydraulic pump 1-5 or an energy accumulator 1-7, increasing the liquid charging amount, and controlling the inlet valves 1-8 of the liquid charging cavity to be closed according to the displacement sensor 2. The liquid filling amount is controlled by the liquid filling control unit and the displacement sensor, so that the volume stepless regulation of the clearance volume cavity can be realized, and the requirement of the reciprocating compressor on the stepless regulation of the air amount is met. A leakage monitoring cavity 6 is formed by the side surface of the clearance piston 4 and the actuating mechanism shell 3 and is used for monitoring whether the sealing assembly fails or not and ensuring the safe operation of the actuating mechanism. The actuating mechanism shell 3 is provided with a limit stop ring 3-1 to prevent the collision between a clearance piston and a compressor piston; connecting flanges 3-7 are provided for connection with the compressor cylinder. The leakage monitoring cavity 6, the liquid filling cavity 7 and the clearance volume cavity 8 are sealed through the sealing assembly 5. The arranged heat exchange coil 9 is used for cooling the actuating mechanism, so that the service life of the sealing assembly is prolonged, the index of the compression process can be reduced, and the compression work is saved; the working temperature of the liquid filling cavity can be stabilized, and the clearance volume is kept stable. The pressure sensor 10 and the temperature sensor 11 can better observe the operation condition of the actuating mechanism, and provide basis for safe operation and fault diagnosis.
The heat exchange coil pipe 9 is arranged in the liquid filling cavity of the single-action liquid filling type clearance stepless adjusting actuating mechanism, and the pressure sensor 10 and the temperature sensor 11 are arranged on the end cover of the actuating mechanism, so that the adjusting operation of the clearance volume is more stable and reliable, and the long-period safe operation of a clearance adjusting system is facilitated.
The above-mentioned specific embodiments can not be regarded as the restriction to the scope of protection of the utility model, to technical personnel in this technical field, it is right the utility model discloses any replacement improvement or transform that embodiment made all fall within the scope of protection of the utility model.
The parts of the present invention not described in detail are the known techniques of those skilled in the art.
Claims (10)
1. A single-action liquid-filling type clearance stepless adjusting actuating mechanism is characterized by comprising an actuating mechanism shell, a clearance piston, a sealing assembly, a displacement sensor and a liquid-filling control unit;
the clearance piston divides the actuating mechanism shell into a clearance volume cavity and a liquid filling cavity, and the liquid filling cavity is connected with the liquid filling control unit;
the liquid filling control unit and the displacement sensor are matched to control the liquid filling amount in the liquid filling cavity, and further the volume of the clearance volume cavity is adjusted.
2. A single-acting, liquid-filled clearance stepless adjustment actuator as set forth in claim 1 wherein the seal assembly is disposed between the clearance piston and the actuator housing, the seal assembly being for preventing leakage of the liquid medium in the liquid-filled cavity.
3. The single-acting, liquid-filled clearance stepless adjustment actuator of claim 1, further comprising a leakage monitoring cavity; the sealing assembly is arranged between the clearance piston and the executing mechanism shell on two sides of the leakage monitoring cavity, and the leakage monitoring cavity is used for monitoring the sealing performance of the sealing assembly.
4. A single-acting liquid-filled clearance stepless adjustment actuator according to any one of claims 1-3, characterized in that the liquid-filling control unit comprises a liquid-filled chamber outlet valve, a flow-limiting valve, an overflow valve, an oil tank, a hydraulic pump, a check valve, an accumulator, a liquid-filled chamber inlet valve and a pipe.
5. A single-acting, liquid-filled clearance stepless adjustment actuator as defined in any one of claims 1-3 wherein the liquid-filled chamber is defined by the clearance piston end surface and the actuator housing inner surface.
6. A single-acting liquid-filled clearance stepless adjustment actuator as claimed in claim 5, wherein a chamber is provided on the clearance piston recessed into the end face of the clearance piston, the chamber forming the liquid-filled cavity with its corresponding actuator housing inner surface.
7. A single-acting liquid-filled clearance stepless adjustment actuator according to any one of claims 1 to 3, characterized in that the liquid medium of the liquid-filled control unit is hydraulic oil, compressor lubricating oil or a liquid medium with a boiling point higher than the maximum working temperature of the compressor cylinder.
8. A single-acting, liquid-filled clearance stepless adjustment actuator as defined in any one of claims 1-3, wherein a limit stop ring is provided on the actuator housing on the side of the clearance volume chamber.
9. A single-acting liquid-filled clearance stepless adjustment actuator according to any one of claims 1-3, further comprising a heat exchange assembly disposed in the liquid-filled cavity.
10. A single-acting, liquid-filled clearance stepless adjustment actuator as defined in claim 9, further comprising a pressure sensor, and/or a temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920555642.6U CN209925185U (en) | 2019-04-22 | 2019-04-22 | Single-action liquid-filled type clearance stepless adjusting actuating mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920555642.6U CN209925185U (en) | 2019-04-22 | 2019-04-22 | Single-action liquid-filled type clearance stepless adjusting actuating mechanism |
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| CN209925185U true CN209925185U (en) | 2020-01-10 |
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| CN201920555642.6U Active CN209925185U (en) | 2019-04-22 | 2019-04-22 | Single-action liquid-filled type clearance stepless adjusting actuating mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944786A (en) * | 2019-04-22 | 2019-06-28 | 山东易阳石化节能装备有限公司 | A kind of single-acting liquid-filled clearance step-less adjustment executing agency |
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2019
- 2019-04-22 CN CN201920555642.6U patent/CN209925185U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109944786A (en) * | 2019-04-22 | 2019-06-28 | 山东易阳石化节能装备有限公司 | A kind of single-acting liquid-filled clearance step-less adjustment executing agency |
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