Novel compressor emptying and blowdown system

Abstract

The invention discloses a novel compressor emptying and sewerage system which comprises an inert gas input end, the inert gas input end is connected to a sealing piece and a spacing piece of at least one air cylinder end through two pipelines, and the two pipelines connected with the inert gas input end are correspondingly provided with pressure regulating valves used for regulating the pressure of the pipelines. The pressures on the two pipelines are not equal; the sealing element of at least one cylinder end is connected to the blow-down tank through a blow-down pipeline and is discharged into the blow-down tank through the upper part, gas is directly discharged, and liquid flows into the blow-down tank; at least one spacing piece at the air cylinder end is connected to the blow-down pipeline through an emptying pipeline and sinks into the lower part of the blow-down tank, liquid is left in the blow-down tank through liquid seal, and gas enters the upper part of the blow-down tank. According to the invention, inert gas multi-pressure inflation is realized; the abnormal leakage condition can be reflected in time; low-pressure gas can be discharged into the high-pressure pipe network; and the gauge piece can obtain overpressure protection and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical equipment, and more particularly to a novel compressor venting and sewage discharge system. Background Art

[0002] Due to the movement and sealing characteristics of the compressor, some gas leakage and oil pollution will inevitably occur. If the leaked gas and oil pollution cannot be discharged in time, it will cause the accumulation of dangerous sources or leak into the crankcase, endangering the safety of equipment and personnel.

[0003] To address this issue, some manufacturers have adopted the method of injecting inert gas to reduce seal leakage, but the pressure control is inaccurate, which may cause overpressure in the spacing parts. The leaked gas is generally discharged locally, posing safety and environmental risks. Summary of the invention

[0004] An object of the present invention is to provide a novel compressor venting and sewage discharge system, which has the advantages of multi-pressure inflation of inert gas; abnormal leakage can be reflected in time; low-pressure gas can be discharged into the high-pressure pipeline network; and the spacing piece can obtain overpressure protection.

[0005] In order to solve the above technical problems, the present invention provides a novel compressor venting and sewage discharge system, including an inert gas input end, which is respectively connected to a seal and a distance piece at at least one cylinder end through two pipelines, and the two pipelines connected to the inert gas input end are correspondingly provided with a pressure regulating valve for adjusting the pressure of the pipeline, and the pressures on the two pipelines are not equal; it also includes a sewage discharge tank, and the seals of at least one cylinder end are connected to the sewage discharge tank through the sewage discharge pipeline, and discharged into the sewage discharge tank through the upper part, the gas is directly discharged, and the liquid flows into the sewage discharge tank; the distance piece at at least one cylinder end is connected to the sewage discharge pipeline through the venting pipeline and sinks to the lower part of the sewage discharge tank. Through the liquid seal, the liquid remains in the sewage discharge tank, and the gas enters the upper part of the sewage discharge tank.

[0006] Preferably, flow sensors are provided on the two pipelines connected to the inert gas input end, and a pressure sensor is provided in front of the pressure regulating valve, and the pressure regulated by the pressure regulating valve is fed back through the pressure sensor.

[0007] Preferably, the pressures on the two pipelines connected to the inert gas input end are both reduced, and the pressure on each sealing member filled into each cylinder end is greater than the pressure on each spacing member filled into each cylinder end.

[0008] Preferably, temperature sensors are respectively installed on the sewage pipelines corresponding to the multiple cylinder ends.

[0009] Preferably, the sewage tank is provided with two liquid level switches for respectively monitoring the high level and the low level of the liquid; and the sewage tank is provided with a pressure sensor for monitoring the pressure of the sewage tank.

[0010] Preferably, the sewage tank is connected to the low-pressure vent via a discharge pipeline, and a safety valve is also provided in parallel on the discharge pipeline.

[0011] Preferably, an ejector is also provided in parallel on the discharge pipeline, and is connected to external high-pressure ejection gas through an ejection pipeline.

[0012] Preferably, a high-pressure ejection gas regulating valve is provided on the ejection pipeline, which is interlocked with a pressure sensor provided on the sewage tank to achieve synchronous adjustment of the opening and closing size.

[0013] Preferably, a sewage pump is also provided at the bottom of the sewage tank.

[0014] Preferably, it also includes a control system, which is used to obtain data from each pressure sensor, flow sensor, temperature sensor, and liquid level switch. The control system is also used to control the opening and closing of the pressure regulating valve, safety valve, high-pressure induced gas regulating valve, and sewage pump, and the opening size; the control system controls the pressure regulating valve to reduce the pressure to a set pressure value by obtaining the pressure sensor data on the two pipelines corresponding to the inert gas input end; the control system monitors the temperature sensor data on the sewage pipeline and compares it with the set threshold value, and alarms if the threshold value is exceeded; the control system monitors the liquid level switch data on the sewage tank and compares it with the set threshold value, if the liquid level exceeds the maximum value or is less than the minimum value, an alarm is issued, and if the liquid level exceeds the maximum value, the control system controls the sewage pump to start sewage discharge; the control system monitors the pressure sensor data corresponding to the sewage tank, and compares it with the set spacing piece pressure, if the data difference is within the set range, the safety valve is controlled to start, and the low-pressure gas is introduced into the low-pressure vent pipeline; the control system controls the opening size of the high-pressure induced gas regulating valve and the sewage tank pressure sensor to change synchronously in proportion.

[0015] The present invention has at least the following beneficial effects:

[0016] 1. In order to solve the technical problems mentioned in the background technology, the present invention uses inert gases such as nitrogen to inflate the unit at two pressures to form a slight positive pressure and reduce gas leakage. The low-pressure part of the inflation is vented and discharged into the manifold, and discharged into the sewage tank through a liquid seal; the high-pressure part of the sewage is directly discharged into the sewage tank. The gas in the sewage tank is discharged into the venting pipeline through high-pressure gas injection, and the liquid is discharged through the sewage pump, so that the low-pressure gas is discharged into the closed pipe network, which is safe and environmentally friendly.

[0017] 2. The system of the present invention is equipped with high-pressure sewage temperature detection, which is realized by temperature sensors; it is also equipped with inert gas flow detection, low-pressure vent gas flow detection, low-pressure vent pipeline safety valve and other equipment. Through high-pressure injection, the leaked low-pressure gas, that is, the mixed gas introduced into the sewage tank, can be introduced into the high-pressure vent pipeline behind the low-pressure vent port, so that even if the pressure of the leaked low-pressure gas is high, it can be discharged smoothly; through high-pressure sewage temperature detection and flow detection, it can timely detect and reflect the abnormal sealing situation, protect the spacing parts from overpressure; through the high-pressure gas flow regulating valve PCV1601, it can dynamically adjust the high-pressure injection gas consumption, reduce consumption, and save energy.

[0018] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the system structure of the present invention. DETAILED DESCRIPTION

[0020] In order to better understand the purpose, structure and function of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement it according to the description.

[0021] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0022] like Figure 1 As shown, the present invention provides a novel compressor venting and sewage discharge system, including an inert gas input end, which is respectively connected to a seal and a distance piece at at least one cylinder end through two pipelines, and the two pipelines connected to the inert gas input end are correspondingly provided with a pressure regulating valve for adjusting the pressure of the pipeline, and the pressures on the two pipelines are not equal; it also includes a sewage discharge tank, and the seals of at least one cylinder end are connected to the sewage discharge tank through the sewage discharge pipeline, and are discharged into the sewage discharge tank through the upper part, the gas is directly discharged, and the liquid flows into the sewage discharge tank; the distance piece at at least one cylinder end is connected to the sewage discharge pipeline through the venting pipeline and sinks to the lower part of the sewage discharge tank, and through the liquid seal, the liquid remains in the sewage discharge tank, and the gas enters the upper part of the sewage discharge tank.

[0023] The two pipelines connected to the inert gas input end are both provided with flow sensors, and a pressure sensor is provided in front of the pressure regulating valve, and the pressure regulated by the pressure regulating valve is fed back through the pressure sensor. The pressure on the two pipelines connected to the inert gas input end is reduced by pressure reduction, and the pressure on each sealing member filled into each cylinder end is greater than the pressure on each spacing member filled into each cylinder end.

[0024] Temperature sensors are installed on the sewage pipelines corresponding to the multiple cylinder ends. Two liquid level switches are installed on the sewage tank to monitor the high and low levels of the liquid respectively; a pressure sensor is installed on the sewage tank to monitor the pressure of the sewage tank. A sewage pump is also installed at the bottom of the sewage tank.

[0025] The sewage tank is connected to the low-pressure vent through a discharge pipeline, and a safety valve is also arranged in parallel on the discharge pipeline. An ejector is also arranged in parallel on the discharge pipeline, which is connected to the external high-pressure ejector gas through the ejector pipeline. A high-pressure ejector gas regulating valve is arranged on the ejector pipeline, which is interlocked with the pressure sensor arranged on the sewage tank to achieve synchronous adjustment of the opening and closing size.

[0026] It also includes a control system, which is used to obtain data from each pressure sensor, flow sensor, temperature sensor, and liquid level switch. The control system is also used to control the opening and closing of the pressure regulating valve, safety valve, high-pressure induced gas regulating valve, and sewage pump, and the opening size; the control system controls the pressure regulating valve to reduce the pressure to a set pressure value by obtaining the pressure sensor data on the two pipelines corresponding to the inert gas input end; the control system monitors the temperature sensor data on the sewage pipeline and compares it with the set threshold value, and alarms if the threshold value is exceeded; the control system monitors the liquid level switch data on the sewage tank and compares it with the set threshold value, if the liquid level exceeds the maximum value or is less than the minimum value, an alarm is issued, and if the liquid level exceeds the maximum value, the control system controls the sewage pump to start sewage discharge; the control system monitors the pressure sensor data corresponding to the sewage tank, and compares it with the set spacing piece pressure, if the data difference is within the set range, the safety valve is controlled to start, and the low-pressure gas is introduced into the low-pressure vent pipeline; the control system controls the opening size of the high-pressure induced gas regulating valve and the sewage tank pressure sensor to change synchronously in proportion.

[0027] Embodiment (taking setting two cylinder ends as an example):

[0028] like Figure 1As shown, the inert gas is divided into two paths. One path is equipped with flow sensor FT-1601, pressure regulating valve PCV-1601, and pressure sensor PT-1601. The pressure is reduced to P1 through the pressure reducing valve (pressure regulating valve PCV-1601); the other path is equipped with flow sensor FT-1602, pressure regulating valve PCV-1602, and pressure sensor PT-1602. The pressure is reduced to P2 through the pressure reducing valve (pressure regulating valve PCV-1602); where P1 is greater than P2. P1 pressure gas is filled into each seal at each cylinder end, and P2 pressure gas is filled into each spacing piece at each cylinder end. If the pressure changes after pressure regulation, timely feedback can be provided through pressure sensor PT-1601 and pressure sensor PT-1602.

[0029] The seal drain pipeline between the two cylinder ends and the drain tank is equipped with temperature sensors TT-1601 and TT-1602 respectively, and is discharged into the drain tank V-1601 through the upper part; the gas is discharged directly, and the liquid flows into the drain tank. The spacer vent pipeline merges into the drain pipeline, sinks to the lower part of the drain tank, and through the liquid seal, the liquid remains in the drain tank, and the gas enters the upper part of the drain tank.

[0030] When the seal leakage increases, the temperature of the sewage pipeline increases due to the high exhaust temperature of the compressor, and the feedback temperature of the temperature sensor TT-1601 or the temperature sensor TT-1602 increases. The sewage tank is equipped with liquid level switches LSL-101, LSH-102, and pressure sensor PT-1603. When the liquid level on the low-pressure side is too high or too low, or the pressure in the sewage tank is too high, an alarm is issued in time.

[0031] The gas side of the sewage tank is equipped with a flow sensor FT-1603, a safety valve PSV-1601, an ejector, a high-pressure ejector gas regulating valve PCV-1601, and also various ball valves VL, various check valves VC, and a pressure gauge PG. When the pressure of the sewage tank is too high and close to the pressure of the spacing piece, the safety valve PSV-1601 will start to release the gas into the low-pressure vent; the high-pressure ejector gas passes through the ejector and introduces the low-pressure gas into the low-pressure vent pipeline through the "Venturi effect", so that even if the pressure of the leaked low-pressure gas is high, it can be discharged smoothly. The high-pressure ejector gas regulating valve PCV-1601 is interlocked with the sewage tank pressure sensor PT-1603. When the sewage tank pressure increases, the regulating valve opening increases. When the sewage tank pressure decreases, the regulating valve opening decreases to reduce the consumption of high-pressure ejector gas. When the seal leakage increases, the gas flow FT-1603 and the sewage tank pressure PT-1603 increase.

[0032] When there is too much liquid in the sewage tank, the liquid level switch LSH-102 alarms, prompting the sewage pump P-1601 to discharge the liquid.

[0033] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation mode, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, other modifications can be easily implemented, so without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. A new type of compressor venting and sewage discharge system, characterized in that: It includes an inert gas input end, which is respectively connected to a seal and a distance piece at at least one cylinder end through two pipelines. The two pipelines connected to the inert gas input end are correspondingly provided with a pressure regulating valve for adjusting the pressure of the pipeline, and the pressures on the two pipelines are not equal; it also includes a sewage tank, the seals at at least one cylinder end are connected to the sewage tank through a sewage pipeline, and are discharged into the sewage tank through the upper part, the gas is directly discharged, and the liquid flows into the sewage tank; the distance piece at at least one cylinder end is connected to the sewage pipeline through a venting pipeline and sinks to the lower part of the sewage tank. Through the liquid seal, the liquid remains in the sewage tank and the gas enters the upper part of the sewage tank.

2. The novel compressor venting and sewage discharge system as claimed in claim 1 is characterized in that: Flow sensors are provided on the two pipelines connected to the inert gas input end, and a pressure sensor is provided in front of the pressure regulating valve, and the pressure regulated by the pressure regulating valve is fed back through the pressure sensor.

3. The novel compressor venting and sewage discharge system as claimed in claim 1 is characterized in that: The pressures on the two pipelines connected to the inert gas input end are both reduced, and the pressure on each sealing member filled into each cylinder end is greater than the pressure on each spacing member filled into each cylinder end.

4. The novel compressor venting and sewage discharge system as claimed in claim 1 is characterized in that: Temperature sensors are respectively installed on the sewage pipelines corresponding to the multiple cylinder ends.

5. The novel compressor venting and sewage discharge system as claimed in claim 1 is characterized in that: The sewage tank is provided with two liquid level switches for respectively monitoring the high and low liquid levels; the sewage tank is provided with a pressure sensor for monitoring the pressure of the sewage tank.

6. The novel compressor venting and sewage discharge system as claimed in claim 5 is characterized in that: The sewage tank is connected to the low-pressure vent through a discharge pipeline, and a safety valve is also arranged in parallel on the discharge pipeline.

7. The novel compressor venting and sewage discharge system as claimed in claim 6 is characterized in that: The discharge pipeline is also provided with an ejector in parallel, which is connected to the external high-pressure ejection gas through the ejection pipeline.

8. The novel compressor venting and sewage discharge system as claimed in claim 7 is characterized in that: The ejection pipeline is provided with a high-pressure ejection gas regulating valve, which is interlocked with the pressure sensor provided on the sewage tank to achieve synchronous adjustment of the opening and closing size.

9. The novel compressor venting and sewage discharge system as claimed in claim 5, characterized in that: A sewage pump is also arranged at the bottom of the sewage tank.

10. A novel compressor venting and sewage discharge system as claimed in any one of claims 2, 4, 8 or 9, characterized in that: It also includes a control system, which is used to obtain data from each pressure sensor, flow sensor, temperature sensor, and liquid level switch. The control system is also used to control the opening and closing of the pressure regulating valve, safety valve, high-pressure induced gas regulating valve, and sewage pump, and the opening size; the control system controls the pressure regulating valve to reduce the pressure to a set pressure value by obtaining the pressure sensor data on the two pipelines corresponding to the inert gas input end; the control system monitors the temperature sensor data on the sewage pipeline and compares it with the set threshold value, and alarms if the threshold value is exceeded; the control system monitors the liquid level switch data on the sewage tank and compares it with the set threshold value, if the liquid level exceeds the maximum value or is less than the minimum value, an alarm is issued, and if the liquid level exceeds the maximum value, the control system controls the sewage pump to start sewage discharge; the control system monitors the pressure sensor data corresponding to the sewage tank, and compares it with the set spacing piece pressure, if the data difference is within the set range, the safety valve is controlled to start, and the low-pressure gas is introduced into the low-pressure vent pipeline; the control system controls the opening size of the high-pressure induced gas regulating valve and the sewage tank pressure sensor to change synchronously in proportion.

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