A skid-mounted explosion-proof air compressor

Abstract

This utility model provides a skid-mounted explosion-proof air compressor, relating to the field of explosion-proof air compressor skid-mounted technology. The utility model includes two screw air compressors fixedly installed on the bottom surface of the housing. The bottom surface of the housing also has a gas cylinder, a heatless regenerative adsorption dryer, and a PLC control cabinet. The PLC control cabinet integrates a Siemens explosion-proof PLC module, a pressure transmitter, and a temperature sensor. The probe end of the pressure transmitter extends into the gas cylinder, and the probe end of the temperature sensor is fixed to the top surface inside the housing. This utility model, through auxiliary devices, utilizes its own independent air preparation and supply components, eliminating the need for the production platform's instrument air supply system. It can directly provide compressed air to the well workover equipment, fundamentally avoiding the pressure fluctuations in the production platform's air supply caused by the large amount of air consumed during well workover operations. This ensures the normal operation of the production platform's instruments and guarantees that the monitoring and control of production platform parameters are not interfered with.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof air compressor skid-mounted technology, and in particular to an explosion-proof air compressor skid-mounted equipment. Background Technology

[0002] In well workover operations at oil and gas extraction sites, compressed air is a crucial power source, supplying air to multiple critical pieces of equipment. Currently, the compressed air required for well workover is typically provided by the production platform's air supply system. The core function of this system is to supply air to the platform's instruments, and its design air supply volume and pressure parameters are based on meeting the instrument requirements.

[0003] However, the amount of compressed air used during well workover operations far exceeds the air demand of instruments. Excessive air consumption can cause pressure fluctuations in the production platform's air supply system, disrupting the stability of the air supply. On the one hand, this may affect the normal operation of instruments, thereby interfering with the parameter monitoring and control of the production platform. On the other hand, unstable air supply can also cause abnormal operation of workover equipment (such as pneumatic winches and blowout preventers), reduce the efficiency of well workover operations, and even cause safety hazards. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned above in the background art by proposing an explosion-proof air compressor skid-mounted equipment.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a skid-mounted explosion-proof air compressor equipment, comprising a housing, a door connected to one side surface of the housing via hinges, and an auxiliary device provided on the inner bottom surface of the housing, the auxiliary device including two screw air compressors fixedly installed on the inner bottom surface of the housing, a gas cylinder, a heatless regenerative adsorption dryer, and a PLC control cabinet also fixedly installed on the inner bottom surface of the housing, the PLC control cabinet integrating a Siemens explosion-proof PLC module, a pressure transmitter, and a temperature sensor, with the probe end of the pressure transmitter extending into the gas cylinder and the probe end of the temperature sensor fixed on the inner top surface of the housing; the front of the PLC control cabinet is provided with a touch screen display and an emergency stop button.

[0006] Preferably, a centrifugal fan is fixedly installed on the top surface of the housing, an exhaust pipe is fixedly installed at the input end of the centrifugal fan, the end of the exhaust pipe away from the centrifugal fan is connected to the interior of the housing through an air duct, and an exhaust pipe is fixedly installed at the output end of the centrifugal fan.

[0007] Preferably, a natural exhaust vent is provided on one side surface of the room, and a gravity damper is fixedly installed inside the natural exhaust vent.

[0008] Preferably, a first explosion-proof control box and a second explosion-proof control box are installed on one side surface of the building, located to the right of the door. Both the first explosion-proof control box and the second explosion-proof control box are electrically connected to the PLC control cabinet via explosion-proof cables.

[0009] Preferably, the outlet of the screw air compressor is connected to the inlet of the heatless regenerative adsorption dryer through an explosion-proof pipe, the outlet of the heatless regenerative adsorption dryer is connected to the inlet of the gas cylinder through an explosion-proof pipe, and the outlet of the gas cylinder extends to the outside of the chamber through an explosion-proof pipe.

[0010] Preferably, the first explosion-proof control box is used to control the explosion-proof electric fireproof damper of the exhaust duct in the HVAC system, and the second explosion-proof control box is used to control the explosion-proof electric fireproof damper of the natural exhaust vent connecting pipe in the HVAC system, and a fusible plug is installed on the valve plate of the explosion-proof electric fireproof damper.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] In this invention, by setting up an auxiliary device, the self-contained independent air preparation and supply component can directly provide compressed air to the well workover equipment without relying on the instrument air supply system of the production platform. This fundamentally avoids the fluctuation of the production platform's air supply pressure caused by the large amount of air consumption during well workover operations, thereby ensuring the normal operation of the production platform's instruments and ensuring that the monitoring and control of the production platform's parameters are not disturbed. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0014] Figure 2 This is a schematic diagram of the internal structure of the housing body of this utility model;

[0015] Figure 3 This utility model Figure 1 Another structural diagram from a different angle;

[0016] Figure 4 This utility model Figure 3 Another structural diagram from another angle.

[0017] Legend: 1. Room body; 2. Room door; 3. Auxiliary devices; 301. Screw air compressor; 302. Gas cylinder; 303. Heatless regenerative adsorption dryer; 304. PLC control cabinet; 305. Centrifugal fan; 306. Air supply duct; 307. Exhaust duct; 308. Gravity damper; 309. First explosion-proof control box; 310. Second explosion-proof control box. Detailed Implementation

[0018] Example 1, as Figure 1-4As shown, an explosion-proof air compressor skid-mounted equipment includes a housing 1, and a door 2 is connected to one side surface of the housing 1 via a hinge.

[0019] Reference Figure 1-4 As shown in this embodiment: An auxiliary device 3 is provided on the inner bottom surface of the chamber 1. The auxiliary device 3 includes two screw air compressors 301 fixedly installed on the inner bottom surface of the chamber 1. A gas cylinder 302, a heatless regenerative adsorption dryer 303, and a PLC control cabinet 304 are also fixedly installed on the inner bottom surface of the chamber 1. The PLC control cabinet 304 integrates a Siemens explosion-proof PLC module, a pressure transmitter, and a temperature sensor. The probe end of the pressure transmitter extends into the gas cylinder 302, and the probe end of the temperature sensor is fixed to the inner top surface of the chamber 1. A touch screen and an emergency stop button are provided on the front of the PLC control cabinet 304. A centrifugal fan 305 is fixedly installed on the top surface of the chamber 1. An exhaust pipe 306 is fixedly installed at the input end of the centrifugal fan 305. The end of the exhaust pipe 306 away from the centrifugal fan 305 is connected to the interior of the chamber 1 through a duct. An exhaust pipe 307 is fixedly installed at the output end of the centrifugal fan 305. A natural exhaust vent is provided on one side surface of the chamber 1. Furthermore, a gravity damper 308 is fixedly installed inside the natural discharge outlet. On one side of the chamber 1, to the right of the main entrance, are installed a first explosion-proof control box 309 and a second explosion-proof control box 310. Both the first explosion-proof control box 309 and the second explosion-proof control box 310 are electrically connected to the PLC control cabinet 304 via explosion-proof cables. The outlet of the screw air compressor 301 is connected to the inlet of the heatless regenerative adsorption dryer 303 via an explosion-proof pipe. The outlet of the heatless regenerative adsorption dryer 303... The outlet is connected to the inlet of gas cylinder 302 through an explosion-proof pipe, and the outlet of gas cylinder 302 extends to the outside of the building 1 through an explosion-proof pipe. The first explosion-proof control box 309 is used to control the explosion-proof electric fireproof damper of the exhaust pipe 306 in the HVAC system. The second explosion-proof control box 310 is used to control the explosion-proof electric fireproof damper of the natural exhaust vent connecting pipe in the HVAC system. A fusible plug is installed on the valve plate of the explosion-proof electric fireproof damper. The adsorbent of the heatless regeneration adsorption dryer 303 is activated alumina.

[0020] Working principle: When the device is needed, first open door 2, connect the main three-phase power supply to the equipment, and then observe whether the red power indicator light on PLC control cabinet 304 is lit. At the same time, confirm whether the touch screen is started normally and displays "standby status". Next, check the values ​​of the pressure transmitter and temperature sensor through the touch screen: the initial pressure in cylinder 302 should be ≤0.1MPa, and the ambient temperature in chamber 1 should be ≤40℃. Ensure that the core parameters meet the start-up requirements. After the parameters are checked and found to be correct, manually open the three explosion-proof valves: the first explosion-proof valve is installed between the screw air compressor 301 and the heatless regenerative adsorption dry... The first explosion-proof valve is installed on the explosion-proof pipeline between the dryer 303 and the gas cylinder 302; the second explosion-proof valve is installed on the explosion-proof pipeline between the gas cylinder 302 and the exterior of the chamber 1; and the third explosion-proof valve is installed on the explosion-proof pipeline extending from the gas cylinder 302 to the exterior of the chamber 1. This ensures unobstructed gas flow throughout the entire passage. After opening the valves, turn on the power switches of the first explosion-proof control box 309 and the second explosion-proof control box 310. Check if the green indicator light of the explosion-proof electric fireproof damper is lit to confirm that the damper is in the "open" state, preventing air duct blockage. After completing the preparations, first press the "Fan Start" button on the PLC control cabinet 304. Press the button, and centrifugal fan 305 starts running and supplies air into chamber 1. During air supply, the positive pressure inside chamber 1 is monitored in real time via the touch screen. When the positive pressure reaches +50Pa, observe the observation window on the outside of chamber 1 to confirm that the blades of gravity damper 308 have automatically opened, ensuring normal ventilation inside chamber 1. After the ventilation system is stable, press the "Compressor Start" button on PLC control cabinet 304. PLC control cabinet 304 will automatically start one of the screw air compressors 301. The left compressor starts by default. After the compressor starts discharging, its discharge pressure will gradually rise to 1.2MPa. The compressed air first enters the heatless regenerative adsorption dryer 303 through a DN50 explosion-proof pipe. Simultaneously, the dryer starts its adsorption program, with an adsorption cycle of 8 hours. The adsorbent is activated alumina, which dries the compressed air to ensure the dew point of the dried compressed air is ≤-40℃. Then, the dried compressed air enters the gas cylinder 302 through a DN40 explosion-proof pipe. The pressure inside the gas cylinder 302 gradually increases. When the touch screen displays that the pressure inside the gas cylinder 302 reaches 1MPa, the PLC control cabinet 304 automatically controls the currently running screw air compressor 301 to stop. If the pressure inside the gas cylinder 302 subsequently drops to 0...At 6MPa, the PLC control cabinet 304 will automatically restart the compressor to continuously supply air to the external well repair equipment. During equipment operation, if one of the screw air compressors 301 malfunctions, such as abnormal exhaust pressure or abnormal noise, the fault light on the PLC control cabinet 304 will immediately illuminate yellow. At the same time, the system will automatically start another compressor to ensure uninterrupted air supply. Operators need to promptly troubleshoot the faulty compressor. In case of fire, the manual operating levers on the first explosion-proof control box 309 and the second explosion-proof control box 310 should be pulled immediately to close the explosion-proof electric fireproof damper. If the temperature inside the duct reaches 70±3℃, the fusible plug at the valve plate of the explosion-proof electric fireproof damper will automatically melt, and the damper will automatically close, cutting off the air passage and preventing flames from entering the interior of the chamber 1. If the equipment malfunctions severely, such as explosion-proof pipe leakage or severe abnormal noise from the compressor, the emergency stop button 3045 on the PLC control cabinet 304 should be pressed immediately to cut off the power supply to all equipment. After the fault is completely eliminated, the equipment should be restarted following the above steps.

[0021] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. A skid-mounted explosion-proof air compressor, comprising a housing (1), wherein a door (2) is connected to one side surface of the housing (1) via a hinge, characterized in that: The bottom of the chamber (1) is provided with an auxiliary device (3). The auxiliary device (3) includes two screw air compressors (301) fixedly installed on the bottom of the chamber (1). The bottom of the chamber (1) is also fixedly installed with a gas cylinder (302), a heatless regeneration adsorption dryer (303), and a PLC control cabinet (304). The PLC control cabinet (304) integrates a Siemens explosion-proof PLC module, a pressure transmitter, and a temperature sensor. The probe end of the pressure transmitter extends into the gas cylinder (302), and the probe end of the temperature sensor is fixed on the top of the chamber (1). The front of the PLC control cabinet (304) is provided with a touch screen and an emergency stop button.

2. The explosion-proof air compressor skid-mounted equipment according to claim 1, characterized in that: A centrifugal fan (305) is fixedly installed on the top surface of the room (1). An air supply pipe (306) is fixedly installed at the output end of the centrifugal fan (305). The end of the air supply pipe (306) away from the centrifugal fan (305) is connected to the interior of the room (1) through an air duct. An exhaust pipe (307) is fixedly installed at the output end of the centrifugal fan (305).

3. The explosion-proof air compressor skid-mounted equipment according to claim 1, characterized in that: A natural exhaust vent is provided on one side surface of the room (1), and a gravity damper (308) is fixedly installed inside the natural exhaust vent.

4. The explosion-proof air compressor skid-mounted equipment according to claim 1, characterized in that: On one side surface of the building (1), located to the right of the door, there is a first explosion-proof control box (309) and a second explosion-proof control box (310). Both the first explosion-proof control box (309) and the second explosion-proof control box (310) are electrically connected to the PLC control cabinet (304) via explosion-proof cables.

5. The explosion-proof air compressor skid-mounted equipment according to claim 1, characterized in that: The outlet of the screw air compressor (301) is connected to the inlet of the heatless regenerative adsorption dryer (303) through an explosion-proof pipe. The outlet of the heatless regenerative adsorption dryer (303) is connected to the inlet of the gas cylinder (302) through an explosion-proof pipe. The outlet of the gas cylinder (302) extends to the outside of the chamber (1) through an explosion-proof pipe.

6. The explosion-proof air compressor skid-mounted equipment according to claim 4, characterized in that: The first explosion-proof control box (309) is used to control the explosion-proof electric fireproof damper of the exhaust pipe in the HVAC system, and the second explosion-proof control box (310) is used to control the explosion-proof electric fireproof damper of the natural exhaust vent connecting pipe in the HVAC system, and a fusible plug is installed on the valve plate of the explosion-proof electric fireproof damper.

Images