CN212479531U - Reciprocating compressor filler sweeps control system - Google Patents
Reciprocating compressor filler sweeps control system Download PDFInfo
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- CN212479531U CN212479531U CN202021075005.8U CN202021075005U CN212479531U CN 212479531 U CN212479531 U CN 212479531U CN 202021075005 U CN202021075005 U CN 202021075005U CN 212479531 U CN212479531 U CN 212479531U
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Abstract
The utility model discloses a reciprocating compressor packs and sweeps control system, including reciprocating compressor's sealed packing main chamber and packing compartment, be provided with nitrogen gas input port and delivery outlet respectively in sealed packing main chamber and packing compartment, nitrogen gas input port connection nitrogen gas transport control pipeline, nitrogen gas delivery outlet connects the collection liquid treatment tank through retrieving the pipeline, nitrogen gas transport control pipeline includes the nitrogen gas source interface of being connected with the nitrogen gas source, and at nitrogen gas source interface back sequential connection filter, main relief pressure valve, pressure differential control valve, the output of pressure differential control valve is through main way flow meter and flow control valve connection sealed packing main chamber's nitrogen gas input port, and the reference atmospheric pressure input port of pressure differential control valve connects the nitrogen gas delivery outlet of sealed packing main chamber; a branch pipe is connected between the main pressure reducing valve and the differential pressure control valve, a branch pressure reducing valve is arranged on the branch pipe, and the output of the branch pressure reducing valve is connected with a nitrogen input port of the sealed packing compartment through a branch flowmeter and a flow regulating valve.
Description
Technical Field
The utility model relates to a reciprocating compressor packs and sweeps control system.
Background
When the reciprocating compressor piston shaft works, dangerous gas can be leaked to the packing main chamber and the packing compartment due to poor sealing, and the danger of working environment can be increased due to leakage. Therefore, people can increase the pressure of the packing compartment or the common discharge pipeline by purging the compressor compartment or the common discharge pipeline, which is beneficial to reducing the leakage of dangerous gas, playing the role of isolation protection and preventing medium leakage; meanwhile, impurities in the seal can be blown out; the function of exchanging the air or medium in the filler seal when starting up; the pressure balance between the cavities is realized during the operation of the compressor, and the sealing is strengthened, however, the current purging is not perfect, for example, the purging pressure is unstable, and the risk of leakage exists.
Disclosure of Invention
The utility model aims at providing a reciprocating compressor packs and sweeps control system, through to packing main room and the compartment input inert gas that packs to and the pressure differential measurement feedback of increase keeps a stable pressure in packing main room and the compartment that packs, has guaranteed that the gas of double entry compressor piston shaft work does not leak.
In order to achieve the purpose, the technical scheme of the invention is as follows: a reciprocating compressor filler blowing control system comprises a sealed filler main chamber and a filler compartment of a reciprocating compressor, wherein a nitrogen input port and a nitrogen output port are respectively arranged on the sealed filler main chamber and the filler compartment, the nitrogen input port is connected with a nitrogen conveying control pipeline, and the nitrogen output port is connected with a liquid collecting treatment tank through a recovery pipeline; a branch pipe is connected between the main pressure reducing valve and the differential pressure control valve, a branch pressure reducing valve is arranged on the branch pipe, and the output of the branch pressure reducing valve is connected with a nitrogen input port of the sealed packing compartment through a branch flowmeter and a flow regulating valve; and safety valves are respectively arranged on an output pipeline of the differential pressure control valve and a branch pipeline output by the branch pressure reducing valve.
The scheme is further as follows: a stop valve is arranged between the filter and the nitrogen source interface; a system pressure gauge is arranged between the main pressure reducing valve and the differential pressure control valve; a differential pressure monitoring sensor is arranged between the output of the differential pressure control valve and the reference air pressure input port of the differential pressure control valve; a branch pressure monitoring sensor is arranged between the output of the branch pressure reducing valve and the branch flowmeter and between the output of the branch pressure reducing valve and the flow regulating valve.
The scheme is further as follows: a filter status indicator is disposed between the filter inlet and the filter outlet.
The scheme is further as follows: the nitrogen source interface, the filter, the main pressure reducing valve, the differential pressure control valve, the main flow meter, the flow regulating valve, the branch pressure reducing valve, the branch flow meter, the flow regulating valve, the safety valve, the differential pressure monitoring sensor and the branch pressure monitoring sensor are integrally installed on one control panel.
The scheme is further as follows: the main flow meter and the flow regulating valve and the branch flow meter and the flow regulating valve are respectively provided with a plurality of valves, and the plurality of main flow meters and the flow regulating valves are respectively connected with the sealing packing main chambers of different reciprocating compressors; the multi-branch flow meter and the flow regulating valve are respectively connected with the packing compartments of different reciprocating compressors.
The utility model has the advantages that: inert gas is input into the filling main chamber and the filling compartment, a constant pressure is maintained in the filling main chamber and the filling compartment by increasing food pressure difference measurement feedback, the working gas of the piston shaft of the compound compressor is ensured not to leak, a constant pressure control valve and a constant pressure difference control valve are integrated in the system, the purging pressure can be ensured to be output at a constant pressure, the constant pressure difference output is also realized, the purging pressure can be at least 0.1Mpa higher than the discharge pressure, and when the discharge pressure is changed, the purging pressure is automatically changed by the system, and the constant pressure difference control is realized. The system solves the problem of filler leakage caused by untight sealing of the reciprocating compressor, and simultaneously integrates multiple rows of purging output into an independent structure, so that the process requirements of reciprocating compressors of different models can be met.
The system utilizes constant pressure and constant pressure difference control to solve the problem of filler leakage of the reciprocating compressor, utilizes pure mechanical and pneumatic control, integrates the control, and well meets the application requirement of explosion-proof places; meanwhile, the system solves the problems that the reciprocating compressor is required to be installed in a scattered mode on site, maintenance is difficult, and no pressure difference control is caused by integration and constant pressure difference control of the compressor purging system.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a schematic diagram of the system control integrated structure of the present invention.
Detailed Description
The utility model provides a reciprocating compressor packs and sweeps control system, as shown in figure 1, the system includes reciprocating compressor's sealed packing main chamber 1 and packing compartment 2, is provided with nitrogen gas input port and the nitrogen gas delivery outlet that has had impurity respectively in sealed packing main chamber and packing compartment, and nitrogen gas input port connection nitrogen gas transport control pipeline, nitrogen gas delivery outlet connect a collection liquid processing jar 3 through retrieving the pipeline, wherein, nitrogen gas transport control pipeline includes nitrogen source interface 5 with nitrogen source 4 is connected, and at nitrogen source interface back in proper order connect with filter 6, main relief pressure valve 7, pressure differential control valve 8, main relief pressure valve 7 adjusts the total pressure of admitting air, and the total pressure of admitting air is higher than reciprocating compressor leakage pressure, and the output of pressure differential control valve 8 is through main branch flow meter and governing valve 9 and connect the nitrogen gas input port of sealed packing main chamber 1 through interface 10, and the reference atmospheric pressure input port 801 of pressure control valve 8 is through interface 11 connection sealed packing main chamber, Namely, on the recovery pipeline of the input port of the liquid collecting treatment tank 3, the differential pressure control valve 8 ensures that the purging pressure of the sealing filler main chamber 1 is at least 0.1Mpa higher than the discharge pressure, and when the discharge pressure changes, the system automatically changes the purging pressure to realize the constant differential pressure control; a branch pipe is connected between the main pressure reducing valve and the differential pressure control valve, a branch pressure reducing valve 12 is arranged on the branch pipe and used for adjusting the pressure of the branch pipe, and the output of the branch pressure reducing valve is connected with a nitrogen input port of the sealed packing compartment 2 through a branch flowmeter and a flow regulating valve 13 and a connector 14; safety valves 15 and 16 are respectively arranged on an output pipeline of the differential pressure control valve and a branch pipeline of the output of the branch pressure reducing valve.
For convenient control, a stop valve 17 is arranged between the filter 6 and the nitrogen source interface 5; for monitoring, a system pressure gauge 18 is provided between the primary pressure reducing valve 7 and the differential pressure control valve 8; a differential pressure monitoring sensor 19 is arranged between the output of the differential pressure control valve 8 and the reference air pressure input port of the differential pressure control valve, and the differential pressure monitoring sensor 19 is a monitoring display meter with an output signal; a branch pressure monitoring sensor 20 is arranged between the output of the branch pressure reducing valve 12 and the branch flowmeter and the flow regulating valve 13, and the branch pressure monitoring sensor 20 is also a monitoring display meter with an output signal.
For the convenience of control, a filter status indicator 21 is provided at the inlet and outlet of the filter 6, and the filter status indicator 21 is a differential pressure indicator.
For convenience of installation and monitoring, as shown in fig. 2, the nitrogen source interface 5, the filter 6, the main pressure reducing valve 7, the differential pressure control valve 8, the main flow meter and the flow regulating valve 9, the branch pressure reducing valve 12, the branch flow meter and the flow regulating valve 13, the safety valves 15 and 16, the differential pressure monitoring sensor 19, and the branch pressure monitoring sensor 20 are integrally installed on a control panel 22. Wherein: the main flow meter and the flow regulating valve 9 and the branch flow meter and the flow regulating valve 13 are respectively provided with a plurality of (4 in the figure), and the plurality of main flow meters and the flow regulating valves are respectively connected with the sealing packing main chambers of different reciprocating compressors; the multi-branch flow meter and the flow regulating valve are respectively connected with the packing compartments of different reciprocating compressors.
The branch pressure reducing valve and the differential pressure control valve of the system ensure that the purging pressure can be output at a constant pressure, the differential pressure control valve can ensure that the purging pressure is at least 0.1Mpa higher than the discharging pressure, and when the discharging pressure changes, the system automatically changes the purging pressure to realize the constant differential pressure control. The system not only solves the problem of filler leakage caused by untight sealing of the reciprocating compressor, but also integrates multiple rows of blowing output into an independent structure, and can meet the process requirements of reciprocating compressors of different models. The system utilizes branch constant pressure and constant pressure difference control to solve the problem of filler leakage of the reciprocating compressor, and utilizes pure mechanical and pneumatic control to integrate the control, thereby well meeting the application in explosion-proof places. The integrated branch pressure monitoring sensor and the differential pressure sensor can convert the pressure alarm signal into an electric signal to be output.
Claims (5)
1. A reciprocating compressor filler blowing control system comprises a sealed filler main chamber and a filler compartment of a reciprocating compressor, wherein a nitrogen input port and a nitrogen output port are respectively arranged on the sealed filler main chamber and the filler compartment, the nitrogen input port is connected with a nitrogen conveying control pipeline, and the nitrogen output port is connected with a liquid collecting treatment tank through a recovery pipeline; a branch pipe is connected between the main pressure reducing valve and the differential pressure control valve, a branch pressure reducing valve is arranged on the branch pipe, and the output of the branch pressure reducing valve is connected with a nitrogen input port of the sealed packing compartment through a branch flowmeter and a flow regulating valve; and safety valves are respectively arranged on an output pipeline of the differential pressure control valve and a branch pipeline output by the branch pressure reducing valve.
2. The control system according to claim 1, wherein a shut-off valve is provided between the filter and the nitrogen source interface; a system pressure gauge is arranged between the main pressure reducing valve and the differential pressure control valve; a differential pressure monitoring sensor is arranged between the output of the differential pressure control valve and the reference air pressure input port of the differential pressure control valve; a branch pressure monitoring sensor is arranged between the output of the branch pressure reducing valve and the branch flowmeter and between the output of the branch pressure reducing valve and the flow regulating valve.
3. The control system of claim 1, wherein a filter status indicator is disposed between the filter inlet and outlet.
4. The control system of claim 2, wherein the nitrogen source interface, the filter, the main pressure reducing valve, the differential pressure control valve, the main flow meter, the flow regulating valve, the branch pressure reducing valve, the branch flow meter, the flow regulating valve, the safety valve, the differential pressure monitoring sensor and the branch pressure monitoring sensor are integrally mounted on a control panel.
5. The control system according to claim 4, wherein the main flow meter and the flow control valve and the branch flow meter and the flow control valve are respectively provided in plural numbers, and the plural main flow meters and the flow control valves are respectively connected to the main sealing packing chambers of different reciprocating compressors; the multi-branch flow meter and the flow regulating valve are respectively connected with the packing compartments of different reciprocating compressors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021075005.8U CN212479531U (en) | 2020-06-12 | 2020-06-12 | Reciprocating compressor filler sweeps control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021075005.8U CN212479531U (en) | 2020-06-12 | 2020-06-12 | Reciprocating compressor filler sweeps control system |
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| Publication Number | Publication Date |
|---|---|
| CN212479531U true CN212479531U (en) | 2021-02-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021075005.8U Active CN212479531U (en) | 2020-06-12 | 2020-06-12 | Reciprocating compressor filler sweeps control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212479531U (en) |
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2020
- 2020-06-12 CN CN202021075005.8U patent/CN212479531U/en active Active
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