Screw reciprocating integrated compressor unit for pressurizing combustible gas

Abstract

The utility model discloses a screw reciprocating integrated compressor unit for pressurizing combustible gas, which belongs to the technical field of crude oil gas recovery and comprises a pressure stabilizing tank, the top of the pressure stabilizing tank is communicated with the top of an oil tank through a gas inlet pipe, and gas in the oil tank enters the pressure stabilizing tank through the gas inlet pipe; an inlet of the screw pressurizing assembly is communicated with the top of the pressure stabilizing tank, the screw pressurizing assembly is provided with a first outlet and a second outlet, and the first outlet is suitable for being communicated with a low-pressure user pipe network; an inlet of the reciprocating pressurizing assembly communicates with the second outlet, and an outlet of the reciprocating pressurizing assembly is suitable for communicating with a high-pressure user pipe network. According to the integrated compressor unit designed by the utility model, through the combination of the screw pressurizing assembly and the reciprocating pressurizing assembly, gas mixed with volatile petroleum in an oil tank is prevented from being directly emptied to a torch, efficient utilization of crude oil is realized, energy conservation and emission reduction are realized, multi-stage pressurizing of gas is realized, the overall pressurizing efficiency is improved, and the cost is reduced. And users with different pressure requirements can be met at the same time.

Description

Technical Field

[0001] This utility model belongs to the field of crude oil and gas recovery technology, specifically relating to a screw reciprocating compressor unit for pressurizing combustible gases. Background Technology

[0002] In related technologies, crude oil tanks store crude oil. When crude oil is discharged and refilled, it affects the oil-gas ratio in the crude oil tank. In order to ensure that the gas pressure in the crude oil tank is stable within a certain range, it is usually vented through a control valve to discharge the gas mixed with volatile crude oil in the crude oil tank to the flare. This results in low crude oil utilization and makes it difficult to ensure the cleanliness of the discharge. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of the present invention is to provide a screw reciprocating integrated compressor unit for pressurizing combustible gases.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This utility model provides a screw reciprocating integrated compressor unit for boosting combustible gas, comprising: a pressure stabilizing tank, the top of which is connected to the top of an oil tank via an inlet pipe, and gas in the oil tank entering the pressure stabilizing tank through the inlet pipe; a screw booster assembly, the inlet of which is connected to the top of the pressure stabilizing tank, the screw booster assembly having a first outlet and a second outlet, the first outlet being suitable for connection to a low-pressure user pipeline network; and a reciprocating booster assembly, the inlet of which is connected to the second outlet, the outlet of which is suitable for connection to a high-pressure user pipeline network.

[0006] According to this utility model, the screw reciprocating integrated compressor unit for combustible gas pressurization, through the combination of screw pressurizing components and reciprocating pressurizing components, avoids directly venting the gas mixed with volatile petroleum in the oil tank to the flare, thus achieving efficient utilization of crude oil and energy saving and emission reduction. Simultaneously, it achieves multi-stage gas pressurization, improving overall pressurization efficiency and meeting the needs of users with different pressure requirements. Moreover, the multi-stage pressurization design allows the system to operate stably within different pressure ranges, reducing the risk of failure that may arise from a single pressurizing device. Maintaining appropriate gas pressure helps improve gas recovery efficiency and reduce unnecessary energy consumption. Furthermore, the integrated compressor unit can flexibly adjust gas distribution according to actual needs, either directly supplying gas to low-pressure user pipelines or meeting the needs of high-pressure users through secondary pressurization.

[0007] Further, the screw supercharging assembly comprises a screw compressor, an inlet of the screw compressor being communicated with the top of the surge tank; a screw separation tank, the screw separation tank being communicated with an outlet of the screw compressor, the screw separation tank being provided with the first outlet and the second outlet.

[0008] Further, the screw supercharging assembly further comprises a screw oil-gas separator, the screw oil-gas separator being arranged between the screw compressor and the screw separation tank, and one end of the screw oil-gas separator being communicated with the outlet of the screw compressor; a screw air cooler, the screw air cooler being arranged between the screw oil-gas separator and the screw separation tank, the screw air cooler being adapted to communicate the other end of the screw oil-gas separator with the screw separation tank.

[0009] Further, the reciprocating supercharging assembly comprises a reciprocating compressor, the reciprocating compressor having a first-stage compression mechanism and a second-stage compression mechanism, an inlet of the first-stage compression mechanism being communicated with the second outlet, an outlet of the first-stage compression mechanism being communicated with an inlet of the second-stage compression mechanism, and an outlet of the second-stage compression mechanism being adapted to be communicated with the high-pressure user pipe network.

[0010] Further, the reciprocating supercharging assembly further comprises a first-stage intake separator, the first-stage intake separator being arranged between the screw separation tank and the reciprocating compressor, the first-stage intake separator being adapted to communicate the second outlet with the inlet of the first-stage compression mechanism.

[0011] Further, the reciprocating supercharging assembly further comprises a second-stage intake separator, the second-stage intake separator being adapted to communicate the outlet of the first-stage compression mechanism with the inlet of the second-stage compression mechanism.

[0012] Further, the reciprocating supercharging assembly further comprises a reciprocating air cooler, the reciprocating air cooler being adapted to communicate the outlet of the first-stage compression mechanism with the inlet of the second-stage compression mechanism, and / or the reciprocating air cooler being adapted to communicate the second-stage compression mechanism with the high-pressure user pipe network.

[0013] Further, the reciprocating supercharging assembly further comprises a blowdown assembly, the blowdown assembly being selectively communicated with the bottom of the surge tank, the blowdown assembly being adapted to be communicated with the surge tank when the amount of waste oil at the bottom of the surge tank exceeds a threshold value, so as to discharge the waste oil at the bottom of the surge tank.

[0014] Further, the reciprocating supercharging assembly further comprises a mounting platform, the mounting platform being provided with a first mounting surface and a second mounting surface, the first mounting surface being located above the second mounting surface, the first mounting surface being provided with the surge tank, and the second mounting surface being provided with the screw supercharging assembly, the reciprocating supercharging assembly and the blowdown assembly; wherein in the axial direction of the surge tank, the screw supercharging assembly, the blowdown assembly and the reciprocating supercharging assembly are sequentially arranged.

[0015] Other advantages, objects, and features of the present application will become apparent from the following specification, claims, and accompanying drawings, and will be apparent to one of ordinary skill in the art and practice of the present application. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] To make the objects, technical solutions and advantages of the present application clearer, the present application is described below with the help of the accompanying drawings:

[0017] Fig. 1 is a front view of the integrated compressor unit of the present application;

[0018] Fig. 2 is a rear view of the integrated compressor unit of the present application;

[0019] Fig. 3 is a schematic view of the cooperation of the second mounting surface with the screw supercharging assembly, the reciprocating supercharging assembly and the blowdown assembly of the present application.

[0020] The symbols in the drawings are as follows:

[0021] 1. integrated compressor unit;

[0022] 10. pressure stabilizing tank;

[0023] 21. screw compressor; 22. screw separation tank; 23. screw oil-gas separator; 24. screw air cooler;

[0024] 31. reciprocating compressor; 32. first-stage intake gas separator; 33. second-stage intake gas separator; 34. reciprocating air cooler;

[0025] 40. blowdown assembly;

[0026] 50. mounting platform; 51. first mounting surface; 52. second mounting surface. DETAILED DESCRIPTION

[0027] To make the objects, technical solutions and advantages of the present application clearer, the present application is described below with the help of the accompanying drawings:

[0028] In the following description, numerous specific details are set forth to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details. In other instances, well-known structures, circuits, materials or processes have not been described in detail in order to avoid obscuring aspects of the present application.

[0029] Reference throughout this specification to "one embodiment", "an embodiment", "one example", or "an example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one embodiment of the application. Thus, appearances of the phrases "one embodiment", "an embodiment", "one example", or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics can be combined in any suitable

[0030] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "high", "low", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application.

[0031] Embodiment one:

[0032] As shown in Figs. 1-3 The present application provides a screw reciprocating integrated compressor set 1 for combustible gas pressurization, comprising: a pressure stabilizing tank 10, a screw pressurization assembly and a reciprocating pressurization assembly, the top of the pressure stabilizing tank 10 is communicated with the top of the oil tank through a gas inlet pipe, the gas in the oil tank enters the pressure stabilizing tank 10 through the gas inlet pipe, the inlet of the screw pressurization assembly is communicated with the top of the pressure stabilizing tank 10, the screw pressurization assembly has a first outlet and a second outlet, the first outlet is adapted to be communicated with a low-pressure user pipe network, the inlet of the reciprocating pressurization assembly is communicated with the second outlet, and the outlet of the reciprocating pressurization assembly is adapted to be communicated with a high-pressure user pipe network.

[0033] In some embodiments, the top of the surge tank 10 is in communication with the top of the oil tank through the gas inlet pipe, and the surge tank 10 is used to receive gas from the top of the oil tank to play a role of preliminary pressure stabilization, so as to ensure that the gas pressure entering the screw pressurizing assembly and the reciprocating pressurizing assembly is relatively stable. The inlet of the screw pressurizing assembly is in communication with the top of the surge tank 10, the screw pressurizing assembly is responsible for the preliminary compression of the gas entering from the surge tank 10, the screw pressurizing assembly has a first outlet and a second outlet, the first outlet is adapted to be in communication with the low-pressure user pipe network to deliver the gas after preliminary compression to the low-pressure user pipe network, and the second outlet is adapted to be in communication with the reciprocating pressurizing assembly to provide a path for the gas requiring further pressurization, the inlet of the reciprocating pressurizing assembly is in communication with the second outlet of the screw pressurizing assembly, and the reciprocating pressurizing assembly is responsible for the secondary pressurization of the gas after preliminary compression. The reciprocating pressurizing assembly is adapted to be in communication with the high-pressure user pipe network to deliver the gas after secondary pressurization to the high-pressure user pipe network to meet the application scenarios with higher pressure requirements.

[0034] It can be understood that the gas in the oil tank enters the surge tank 10 through the gas inlet pipe, and the pressure of the gas is preliminarily stabilized here. The gas after pressure stabilization enters the screw pressurizing assembly, and the gas is preliminarily compressed here. The compressed gas is divided into two paths, one path is directly delivered to the low-pressure user pipe network through the first outlet for use by users with low pressure requirements, and the other path enters the reciprocating pressurizing assembly through the second outlet for secondary pressurization. The reciprocating pressurizing assembly performs secondary pressurization on the gas entering from the second outlet of the screw pressurizing assembly to ensure that the gas reaches a higher pressure level. The gas after secondary pressurization is delivered to the high-pressure user pipe network through the outlet of the reciprocating pressurizing assembly for use by users with high pressure requirements.

[0035] According to the screw reciprocating integrated compressor set 1 for combustible gas pressurization, through the combination of the screw pressurizing assembly and the reciprocating pressurizing assembly, multi-stage pressurization of the gas is realized, the overall pressurization efficiency is improved, different pressure requirements of users can be met at the same time, and moreover, the multi-stage pressurization design enables the system to stably operate in different pressure ranges, reduces the fault risk possibly brought by a single pressurization device. Of course, maintaining appropriate gas pressure helps to improve gas recovery efficiency and reduce unnecessary energy consumption. At the same time, the integrated compressor set 1 can flexibly adjust the distribution of the gas according to actual requirements, that is, the gas can be directly supplied to the low-pressure user pipe network or the demand of high-pressure users can be met through secondary pressurization.

[0036] It is worth noting that through the above setting, the gas mixed with volatile oil in the oil tank can be avoided from being directly vented to the flare, efficient utilization of crude oil is realized, and energy saving and emission reduction is realized at the same time.

[0037] Embodiment two:

[0038] The screw pressurizing assembly comprises a screw compressor 21 and a screw separation tank 22, the inlet of the screw compressor 21 is communicated with the top of the constant pressure tank 10, the screw separation tank 22 is communicated with the outlet of the screw compressor 21, and the screw separation tank 22 is provided with a first outlet and a second outlet.

[0039] It can be understood that crude oil and the like are stored in the oil tank, and volatile combustible oil gas is mixed in the space at the top of the oil tank, combustible gas (gas mixed with volatile combustible oil gas) can enter the constant pressure tank 10 through the gas inlet pipe and be filtered and separated in the constant pressure tank 10 (after entering the constant pressure tank 10, the combustible gas can be separated into mixed gas and crude oil, the crude oil is located at the bottom of the constant pressure tank 10, and the mixed gas is located at the top of the constant pressure tank 10, and the mixed gas also contains volatile crude oil), the mixed gas enters the screw compressor 21 through the communication pipe and enters the screw separation tank 22 after being pressurized by the screw compressor 21, and finally enters the low-pressure user pipe network through the first outlet.

[0040] It is worth mentioning that the mixed gas is pressurized to 0.3 MPa by the screw compressor 21 to meet the requirement of being delivered to the low-pressure user pipe network, and the pressure of the mixed gas can reach 2-4 MPa after being pressurized by the reciprocating pressurizing assembly to meet the requirement of being delivered to the high-pressure user pipe network.

[0041] It is worth mentioning that the screw separation tank 22 is suitable for further separating liquid substances or small particles that may be left in the gas (that is, a small amount of liquid droplets or condensates still exist in the gas, and these substances may cause damage to downstream equipment or pollute the delivered gas if not removed), and the screw separation tank 22 effectively separates the impurities in the gas by gravity sedimentation, centrifugal force or other physical methods, so as to ensure that the gas delivered to the low-pressure user pipe network is as pure as possible.

[0042] According to some embodiments of the utility model, the screw pressurizing assembly further comprises a screw oil-gas separator 23 and a screw air cooler 24, the screw oil-gas separator 23 is arranged between the screw compressor 21 and the screw separation tank 22, one end of the screw oil-gas separator 23 is communicated with the outlet of the screw compressor 21, and the screw air cooler 24 is arranged between the screw oil-gas separator 23 and the screw separation tank 22, and the screw air cooler 24 is suitable for communicating the other end of the screw oil-gas separator 23 with the screw separation tank 22.

[0043] In some embodiments, the gas compressed by the screw compressor 21 is first sent to the screw oil-gas separator 23 before entering the low-pressure user pipeline. The main task of the screw oil-gas separator 23 is to remove the entrained oil and other liquid impurities from the compressed gas (because the gas is compressed and the temperature rises and is re-cooled, lubricating oil or other components may condense into liquid, which may cause damage to subsequent equipment or pollute the delivered gas if not separated), and the gas treated by the screw oil-gas separator 23 is more pure and reduces the content of harmful substances.

[0044] Of course, the gas treated by the screw oil-gas separator 23 is cooled by the screw air cooler 24 before entering the low-pressure user pipeline. The main task of the screw air cooler 24 is to reduce the temperature of the high-temperature gas from the screw oil-gas separator 23 (the compression process can cause the temperature of the gas to rise significantly, and the excessively high temperature can adversely affect the downstream equipment or does not meet the requirements of some process flows), and the cooled gas temperature is more moderate, which helps to maintain the stability of the pressure and flow of the gas in the subsequent delivery process, and ensures that the gas can be delivered to the low-pressure user pipeline according to the expected conditions.

[0045] Embodiment three:

[0046] This embodiment is based on embodiment one, and the reciprocating supercharging assembly includes a reciprocating compressor 31 having a first compression mechanism and a second compression mechanism. The inlet of the first compression mechanism is in communication with the second outlet, the outlet of the first compression mechanism is in communication with the inlet of the second compression mechanism, and the outlet of the second compression mechanism is adapted to be in communication with the high-pressure user pipeline.

[0047] In some embodiments, the inlet of the first compression mechanism is in communication with the second outlet of the screw supercharging assembly, and the first compression mechanism is responsible for the primary supercharging of the gas entering from the second outlet of the screw supercharging assembly to improve the pressure level of the gas. The inlet of the second compression mechanism is in communication with the outlet of the first compression mechanism, and the outlet of the second compression mechanism is adapted to be in communication with the high-pressure user pipeline. The second compression mechanism is responsible for the secondary supercharging of the gas after the primary supercharging by the first compression mechanism to ensure that the gas reaches a higher pressure level to meet the needs of high-pressure users.

[0048] It can be understood that through the combination of the two-stage compression mechanism, efficient supercharging of the gas is achieved, which can simultaneously meet the needs of users with different pressure requirements. The multi-stage supercharging design enables the system to operate stably in different pressure ranges, reduces the risk of failure that may be caused by a single supercharging device, and the integrated compressor set 1 can flexibly adjust the distribution of the gas according to actual needs, which can directly supply the gas to the low-pressure user pipeline or meet the needs of high-pressure users through secondary supercharging.

[0049] It is worth mentioning that, compared with single-stage compression, multi-stage compression (such as two-stage reciprocating compression) can more effectively reduce the temperature rise in the compression process, reduce energy loss, and improve compression efficiency. In addition, step-by-step pressurization can also reduce the workload of each compression stage and prolong the service life of the reciprocating compressor 31.

[0050] Here, the pressure value of the gas compressed by the first-stage compression mechanism and the second-stage compression mechanism is 2-4 MPa.

[0051] According to some embodiments of the present application, the reciprocating supercharging assembly further comprises: a first-stage air inlet separator 32, which is arranged between the screw separator tank 22 and the reciprocating compressor 31, and is adapted to communicate the second outlet with the inlet of the first-stage compression mechanism.

[0052] In some embodiments, the first-stage air inlet separator 32 is arranged between the screw separator tank 22 and the reciprocating compressor 31, which can ensure that the gas from the second outlet of the screw separator tank 22 is further purified and separated before entering the first-stage compression mechanism, so as to remove the oil, water and other impurities that may exist.

[0053] According to some embodiments of the present application, the reciprocating supercharging assembly further comprises: a second-stage air inlet separator 33, which is adapted to communicate the outlet of the first-stage compression mechanism with the inlet of the second-stage compression mechanism.

[0054] In some embodiments, the second-stage air inlet separator 33 can ensure that the gas from the outlet of the first-stage compression mechanism is further purified and separated before entering the second-stage compression mechanism, so as to remove the oil, water and other impurities that may exist.

[0055] It can be understood that, through the purification treatment of the first-stage air inlet separator 32, the gas entering the first-stage compression mechanism is more pure, reducing the risk of wear and failure of the first-stage compression mechanism caused by impurities; similarly, through the purification treatment of the second-stage air inlet separator 33, the gas entering the second-stage compression mechanism is more pure, reducing the risk of wear and failure of the second-stage compression mechanism caused by impurities, thereby prolonging the service life of the reciprocating compressor 31.

[0056] It is worth mentioning that the separation technology adopted by the first-stage air inlet separator 32 and the second-stage air inlet separator 33 can be centrifugal separation, filter screen, cyclone separation, etc., to ensure the best separation effect, which is not limited here.

[0057] Of course, through the combination of the primary intake separator 32 and the secondary intake separator 33, the gas is gradually purified, ensuring that the gas entering the compressor in each stage is as pure as possible, reducing the possibility of equipment wear and failure, and the multi-stage purification design enables the integrated compressor unit 1 to better adapt to complex working condition changes, maintain a stable and reliable operating state, and at the same time, the high-quality gas output not only improves the operating efficiency of the integrated compressor unit 1, but also reduces the pollutants emitted into the environment.

[0058] According to some embodiments of the present application, the reciprocating supercharging assembly further comprises: a reciprocating air cooler 34, the reciprocating air cooler is adapted to communicate the outlet of the primary compression mechanism with the inlet of the secondary compression mechanism, and / or the reciprocating air cooler 34 is adapted to communicate the secondary compression mechanism with the high-pressure user pipe network.

[0059] In some embodiments, the reciprocating air cooler 34 comprises a primary air cooling mechanism and a secondary air cooling mechanism, the primary air cooling mechanism is adapted to communicate the outlet of the primary compression mechanism with the inlet of the secondary compression mechanism, the primary air cooling mechanism is adapted to cool the high-temperature and high-pressure gas output by the primary compression mechanism, the secondary air cooling mechanism is adapted to communicate the secondary compression mechanism with the high-pressure user pipe network, and the secondary air cooling mechanism is adapted to cool the high-temperature and high-pressure gas output by the secondary compression mechanism. Thus, the reciprocating air cooler 34 can reduce the temperature of the high-temperature and high-pressure gas to a suitable level for delivery, and the cooled gas is finally delivered from the outlet of the reciprocating air cooler 34 to the high-pressure user pipe network for use by users with high-pressure requirements.

[0060] Embodiment four:

[0061] This embodiment is based on embodiment one, and the integrated compressor unit 1 further comprises: a blowdown assembly 40, the blowdown assembly 40 is selectively in communication with the bottom of the surge tank 10, and the blowdown assembly 40 is adapted to communicate with the surge tank 10 when the amount of waste oil at the bottom of the surge tank 10 exceeds a threshold value, so as to discharge the waste oil at the bottom of the surge tank 10.

[0062] It can be understood that the surge tank 10 may accumulate a certain amount of waste oil during operation, which is mainly derived from liquid components carried in the gas or lubricating oil inside the equipment, etc. The blowdown assembly 40 is equipped with a monitoring device (such as a liquid level sensor) to monitor the amount of waste oil at the bottom of the surge tank 10 in real time. When the amount of waste oil reaches or exceeds the preset threshold value, the blowdown assembly 40 will be started and communicated with the surge tank 10 to discharge the excess waste oil, ensuring the cleanliness of the internal environment of the surge tank 10 and the normal operation of the integrated compressor unit 1.

[0063] It is worth noting that the communication between the blowdown assembly 40 and the surge tank 10 is selective, i.e. it is only opened when waste oil needs to be discharged, and is kept closed at ordinary times to prevent gas leakage or other accidents.

[0064] According to some embodiments of the present application, the integrated compressor set 1 further comprises: a mounting platform 50, the mounting platform 50 is provided with a first mounting surface 51 and a second mounting surface 52, the first mounting surface 51 is located above the second mounting surface 52, the first mounting surface 51 is provided with the surge tank 10, and the second mounting surface 52 is provided with the screw supercharging assembly, the reciprocating supercharging assembly and the blowdown assembly 40; wherein, in the axial direction of the surge tank 10, the screw supercharging assembly, the blowdown assembly 40 and the reciprocating supercharging assembly are sequentially arranged.

[0065] In some embodiments, the mounting platform 50 is provided with a first mounting surface 51 and a second mounting surface 52, wherein the first mounting surface 51 is located above the second mounting surface 52, the first mounting surface 51 is specially used for placing the surge tank 10, so as to ensure that the surge tank 10 is located at a higher position, thereby facilitating the natural inflow and outflow of gas, and the second mounting surface 52 is located below the first mounting surface 51, and is used for placing the screw supercharging assembly, the reciprocating supercharging assembly and the blowdown assembly 40, so as to facilitate the pipeline connection between the screw supercharging assembly, the reciprocating supercharging assembly and the blowdown assembly 40, and connection to other equipment.

[0066] In the axial direction of the surge tank 10, the screw supercharging assembly, the blowdown assembly 40 and the reciprocating supercharging assembly are sequentially arranged, that is, the screw supercharging assembly is located at the front end and directly communicates with the top of the surge tank 10, the screw supercharging assembly is responsible for preliminary compression of the gas, the blowdown assembly 40 is located at the middle position and can selectively communicate with the bottom of the surge tank 10, the blowdown assembly 40 is responsible for discharging waste oil, and the reciprocating supercharging assembly is located at the rear end and receives the gas after preliminary compression and performs secondary supercharging, finally delivering high-pressure gas to the user pipe network.

[0067] It can be understood that, through the layered design, the vertical space is reasonably utilized, the connection between the components is more compact and simple, the occupied area is reduced, moreover, the modular layout makes each component easy to access, facilitating installation, inspection and maintenance, reducing the operation difficulty and cost, of course, through the above layout, the pipeline length and bending are reduced, the pressure loss and energy consumption in the gas transmission process are reduced, the overall efficiency and stability of the integrated compressor set 1 are improved, at the same time, the surge tank 10 is located at a higher position, which helps to prevent liquid accumulation and reduce potential safety hazards, and the independent arrangement of the blowdown assembly 40 also enhances the safety and reliability of the integrated compressor set 1.

[0068] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the present application and not to limit, although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application.

Claims

1. A screw reciprocating integrated compressor package for pressurization of combustible gases, characterized by, The application relates to a gas station, which comprises: a surge tank, the top of the surge tank being communicated with the top of an oil tank through an air inlet pipe, and gas in the oil tank entering the surge tank through the air inlet pipe; a screw pressurizing assembly, the inlet of the screw pressurizing assembly being communicated with the top of the surge tank, the screw pressurizing assembly having a first outlet and a second outlet, and the first outlet being adapted to be communicated with a low-pressure user pipe network; a reciprocating pressurizing assembly, the inlet of the reciprocating pressurizing assembly being communicated with the second outlet, and the outlet of the reciprocating pressurizing assembly being adapted to be communicated with a high-pressure user pipe network.

2. A screw reciprocating integrated compressor package for pressurization of combustible gases as claimed in claim 1 wherein, The screw pressurizing assembly comprises: a screw compressor, the inlet of the screw compressor being communicated with the top of the surge tank; a screw separation tank, the outlet of the screw compressor being communicated with the screw separation tank, and the screw separation tank being provided with the first outlet and the second outlet.

3. The screw reciprocating integrated compressor package for pressurization of combustible gases as claimed in claim 2 wherein, The screw pressurizing assembly further comprises: a screw oil-gas separator, one end of the screw oil-gas separator being communicated with the outlet of the screw compressor and the screw oil-gas separator being arranged between the screw compressor and the screw separation tank; a screw air cooler, the screw air cooler being arranged between the screw oil-gas separator and the screw separation tank, and the screw air cooler being adapted to communicate the other end of the screw oil-gas separator with the screw separation tank.

4. The screw reciprocating integrated compressor package for pressurization of combustible gases as claimed in claim 2 wherein, The reciprocating pressurizing assembly comprises: a reciprocating compressor, the reciprocating compressor having a primary compression mechanism and a secondary compression mechanism, the inlet of the primary compression mechanism being communicated with the second outlet, the outlet of the primary compression mechanism being communicated with the inlet of the secondary compression mechanism, and the outlet of the secondary compression mechanism being adapted to be communicated with the high-pressure user pipe network.

5. A screw reciprocating integrated compressor package for pressurization of combustible gases as claimed in claim 4 wherein, The reciprocating pressurizing assembly further comprises: a primary gas inlet separator, the primary gas inlet separator being arranged between the screw separation tank and the reciprocating compressor, and the primary gas inlet separator being adapted to communicate the second outlet with the inlet of the primary compression mechanism.

6. A screw reciprocating integrated compressor package for pressurization of combustible gases as claimed in claim 5 wherein, The reciprocating pressurizing assembly further comprises: a secondary gas inlet separator, the secondary gas inlet separator being adapted to communicate the outlet of the primary compression mechanism with the inlet of the secondary compression mechanism.

7. A screw reciprocating integrated compressor package for pressurization of combustible gases as claimed in claim 6 wherein, The reciprocating pressurizing assembly further comprises: a reciprocating air cooler, the reciprocating air cooler being adapted to communicate the outlet of the primary compression mechanism with the inlet of the secondary compression mechanism, and / or the reciprocating air cooler being adapted to communicate the secondary compression mechanism with the high-pressure user pipe network.

8. A screw reciprocating integrated compressor package for pressurization of combustible gases as claimed in claim 1 wherein, The application further comprises: a blowdown assembly, the blowdown assembly being selectively communicated with the bottom of the surge tank, and the blowdown assembly being adapted to be communicated with the surge tank when the amount of waste oil at the bottom of the surge tank exceeds a threshold value so as to discharge the waste oil at the bottom of the surge tank.

9. A screw reciprocating integrated compressor package for pressurization of combustible gases as claimed in claim 8 wherein, The application further comprises: a mounting platform, the mounting platform being provided with a first mounting surface and a second mounting surface, the first mounting surface being located above the second mounting surface, the first mounting surface being provided with the surge tank, and the second mounting surface being provided with the screw pressurizing assembly, the reciprocating pressurizing assembly and the blowdown assembly. In the axial direction of the surge tank, the screw pressurizing assembly, the blowdown assembly and the reciprocating pressurizing assembly are sequentially arranged. ​

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