CN212838287U - Compound natural gas compressor host computer no-load operation test device - Google Patents
Compound natural gas compressor host computer no-load operation test device Download PDFInfo
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- CN212838287U CN212838287U CN202022045427.7U CN202022045427U CN212838287U CN 212838287 U CN212838287 U CN 212838287U CN 202022045427 U CN202022045427 U CN 202022045427U CN 212838287 U CN212838287 U CN 212838287U
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Abstract
The utility model discloses a compound natural gas compressor host computer no load operation test device, including base, host system, transmission system, actuating system, lubricating system and electrical system, the vice base of host computer has multiple specification according to the model division for install different type unit, the vice base of actuating device divides there is multiple specification, is used for installing different type drive arrangement, transmission system is used for connecting drive arrangement and corresponding treats that experimental host computer axle links to each other, lubricating system is used for providing lubricating oil to treating experimental host computer, electrical system is used for control host system, actuating system, lubricating system respectively. The utility model discloses can develop the no load mechanical operation test of big, medium and small-size natural gas compressor host computer, can verify compressor host computer lubricating system's lubricated effect and the vice motion circumstances of each friction of moving system to verify compressor host computer mechanical properties.
Description
Technical Field
The utility model relates to a natural gas compressor technical field especially relates to a compound natural gas compressor host computer no load machinery operation test device.
Background
The main engine of the natural gas compressor is a core assembly of the compressor unit, the main function of the compressor unit is to compress gas, and the main engine of the compressor unit mainly comprises an engine body, a moving part, a middle body, a cylinder and a lubricating part. API618 requires that the compressor host should perform a 4 hour no-load mechanical run test to verify compressor host performance. When a manufacturer performs a no-load operation test of a compressor main unit, the capability of the test device which can be suitable for performing tests of the compressor main units of various types needs to be comprehensively considered. The no-load mechanical operation test mainly comprises three parts of flushing, idle running and cylinder idle running, and can verify the lubricating effect of a lubricating system of a main machine of the compressor and the motion condition of each friction pair of the motion system, thereby verifying the mechanical performance of the main machine. Therefore, it is necessary to design a no-load mechanical operation test device which can adapt to various specifications of main machines.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that not enough to exist to the above-mentioned prior art provides a can realize the no load mechanical operation test's of multiple compressor host computer compound natural gas compressor host computer no load mechanical operation test device.
The utility model discloses the technical scheme who adopts does: the utility model provides a compound natural gas compressor host computer no load machinery operation test device, includes base, host system, transmission system, actuating system, lubricating system and electrical system, its characterized in that: the main machine system comprises a main machine auxiliary base arranged on the base and a main machine to be tested arranged on the main machine auxiliary base, the main machine auxiliary base is divided into multiple specifications according to machine types and used for installing different types of machine sets, the driving system comprises a driving device auxiliary base and a driving device arranged on the driving device auxiliary base, the driving device auxiliary base is divided into multiple specifications and used for installing different types of driving devices, the transmission system is used for connecting the driving device and connected with a corresponding main machine shaft to be tested, the lubricating system is used for providing lubricating oil for the main machine to be tested, and the electric control system is respectively used for controlling the main machine system, the driving system and the lubricating system.
According to the technical scheme, the transmission system comprises a main machine shaft connecting piece, a flywheel, a flexible long shaft connector and a motor shaft connecting piece, wherein the main machine shaft connecting piece is connected with a main machine shaft to be tested, the flywheel is connected with the main machine shaft connecting piece, the flexible long shaft connector is connected with the flywheel, the motor shaft connecting piece is connected with the other end of the flexible long shaft connector, and the motor shaft connecting piece is connected with a test motor shaft.
According to the technical scheme, the flexible long shaft connector comprises a connecting shaft, a half of a cross universal joint structure and connecting discs, wherein the half of the cross universal joint structure and the connecting discs are symmetrically arranged at two ends of the connecting shaft, one end of each connecting disc is of a disc-shaped structure used for being connected with other parts, the other end of each connecting disc is of a half of the cross universal joint structure, and the connecting disc and the other half of the cross universal joint structure of the connecting shaft form a complete cross universal joint structure.
According to the technical scheme, the main shaft connecting piece comprises a shaft sleeve and a connecting disc connected with the shaft sleeve, the shaft sleeve is used for sleeving a main shaft to be tested, the main shaft and the connecting disc are connected through a key, the connecting disc is perpendicular to the shaft sleeve, and the shaft sleeve is connected with a flywheel.
According to the technical scheme, the motor shaft connecting piece comprises a motor shaft sleeve and a connecting disc connected with the motor shaft sleeve, the connecting disc is connected with the other end of the flexible long shaft connector, and the motor shaft sleeve is in interference fit with the motor shaft.
According to the technical scheme, the base passes through rag bolt and links to each other with the ground, the base passes through inclined plane base adjustment pad and installs on the ground, rag bolt's lower extreme passes through grout structure and links to each other with the ground, and the upper end links to each other with lock nut in the base connecting hole, the base connecting hole is big-end-up's step hole in aperture, is equipped with the sphere adjustment pad in the step department in step hole, the sphere adjustment pad suit is on rag bolt, and its upper end portion passes through lock nut pressure equipment step hole department.
According to the technical scheme, the base adjusting pad comprises two adjusting blocks with inclined planes and an adjusting screw rod, the two adjusting blocks are matched through the inclined planes, and the adjusting screw rod is in threaded connection with one adjusting block through threads.
According to the technical scheme, the spherical adjusting pad comprises a spherical pad, a spherical bolt matched with the lower end of the spherical pad through a spherical surface, a round nut connected with the lower surface of the spherical bolt through threads, and a positioning sleeve arranged in a positioning hole of the spherical bolt, wherein the spherical pad is sleeved at the upper end of the positioning sleeve.
According to above-mentioned technical scheme, lubricating system passes through pre-buried pipeline and filters sled and treat that test host computer is connected, and lubricating system contains oil tank, many oil pumps and control valve subassembly, and the apron sets up the oil trap all around and collects the waste oil.
According to the technical scheme, the electric control system comprises a PLC (programmable logic controller), a frequency converter and a control console, test programs of the running stages of a 'flushing', 'idle running-in with cylinder' host can be displayed on the control console, three stages of tests can be automatically or manually controlled at the control console, and the electric control system can automatically oil filling, oil supplementing and oil discharging and control of the rotating speeds and the test stages at all levels.
The utility model discloses the beneficial effect who gains does:
1. the utility model discloses can develop the no load operation test of big, medium and small-size natural gas compressor host computer, can verify compressor host computer lubricating system's lubricated effect and the vice motion circumstances of each friction of moving system to verify compressor host computer mechanical properties.
2. The transmission system is provided with the flexible long shaft connector, so that the flexible long shaft connector can be used for the central height inconsistency and the axial size deviation of the main machine and the driving machine, the quick connection and alignment of various main machines during the main machine test are realized, and the applicability is strong.
3. Through setting up the floating foundation bolt of self-adaptation, the clearance between base and ground can be eliminated after its sphere adjustment pad and the combination of base adjustment wedge, guarantees the base level, and it is convenient, the suitability is strong to adjust.
Drawings
Fig. 1 is a schematic structural diagram provided in the embodiment of the present invention.
Fig. 2 is an experimental bitmap of each model host provided by the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an adaptive floating anchor bolt provided by the embodiment of the present invention.
Fig. 4 is a schematic structural view of a base adjustment pad according to an embodiment of the present invention.
Fig. 5 is a schematic structural view of a spherical adjustment pad according to an embodiment of the present invention.
Fig. 6 is a structural diagram of a flexible transmission device according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of a flexible long shaft connector according to an embodiment of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1 and 2, the present embodiment provides a no-load operation testing apparatus for a main engine of a compound natural gas compressor, which includes a base 2, a main engine system, a transmission system 4, a driving system, a lubricating system and an electric control system, wherein the main engine system includes a main engine sub-base 3 installed on the base 2 and a main engine to be tested installed on the main engine sub-base, the main engine sub-base is divided into a plurality of specifications according to models and is used for installing different types of units, the driving system includes a driving apparatus sub-base 5 and a driving apparatus 6 installed on the driving apparatus sub-base, the driving apparatus sub-base 5 is divided into a plurality of specifications and is used for installing different types of driving apparatuses 6, the transmission system is used for connecting the driving apparatus 6 to a corresponding main engine shaft to be tested, the lubricating system is used for providing lubricating oil to the main engine to be tested, the electric, A driving system and a lubricating system.
The foundation 1 of the device is of a reinforced concrete structure, an electric wire, a lubricating oil way and a waste oil discharge pipeline are pre-buried in the foundation, and the bearing capacity of the foundation can reach 60T.
A casting base 2 with a longitudinal and transverse T-shaped groove is installed on the foundation, and the base is fixed by concrete grouting through a specially-made self-adaptive floating foundation bolt 14. As shown in fig. 3, 4 and 5, the foundation 1 is installed on the foundation 2 through a foundation adjusting pad 15, the lower end of the anchor bolt 4 is connected with the foundation 2 through a grouting structure 11, and the upper end is connected with a lock nut 12 in a foundation connecting hole.
In this embodiment, the lower end of the anchor bolt is connected to the foundation 2 through the grouting structure 11, and the upper end is connected to the lock nut in the base connection hole.
In this embodiment, the base connecting hole is a stepped hole with a large upper aperture and a small lower aperture, a spherical adjusting pad 13 is arranged at a step of the stepped hole, the spherical adjusting pad 13 is sleeved on the foundation bolt 14, and the upper end portion of the spherical adjusting pad is press-fitted at the step hole through the lock nut 2.
In this embodiment, as shown in fig. 4, the base adjusting pad 15 includes two adjusting blocks 1501 and 1502 having inclined surfaces and an adjusting screw 1503, the two adjusting blocks 1501 and 1502 are matched through inclined surfaces, the adjusting screw 1503 is in threaded connection with the adjusting block 1502 at the upper portion through threads, and the adjusting screw is screwed in or out to push the adjusting block 1502 to move back and forth so as to adjust the contact condition of the inclined surfaces of the two tilting bars, thereby adjusting the height of the tilting pad.
In this embodiment, as shown in fig. 5, the spherical adjustment pad includes a spherical pad 1301, a spherical bolt 1302 in spherical fit with the lower end of the spherical pad 1301, a round nut 1303 in threaded connection with the lower surface of the spherical bolt 1302, and a positioning sleeve 1304 installed in a positioning hole of the spherical bolt 1302, and the spherical pad 1301 is sleeved on the upper end of the positioning sleeve 1304. The upper end part of the spherical pad 1301 is of a plane structure and is used for supporting other workpieces to be supported and adjusted, and the lower part of the spherical pad 1301 is of a spherical structure and is in spherical fit contact with the spherical bolt 1302; the upper part of the spherical bolt 1302 is in a spherical structure, and is in fit contact with the spherical pad 1301 through a spherical surface, and the outer surface of the lower part of the spherical bolt is provided with threads and is connected with the round nut 1303 through the threads. 4 groups of adjusting blind holes are uniformly distributed on the outer circular surface of the spherical bolt 1302, and a crowbar or the like penetrates into the blind holes to rotate the spherical bolt 1302, so that the spherical bolt 1302 is lifted; the upper part and the lower part of the round nut 1303 are both of a plane structure, the lower part of the round nut 1303 is in contact with a foundation or other workpieces, the upper part of the round nut 1303 may be in direct contact with the spherical bolt 1302, the inner hole of the round nut 1303 is provided with threads and is connected with the spherical bolt 1302 through threaded connection, and the outer circular surface of the round nut 1303 is provided with an adjusting blind hole 1307 which has the same action as the blind hole of the spherical bolt; the positioning sleeve 1304 is in direct contact with the spherical pad 1301 and the spherical bolt 1302, the positioning sleeve 1304 is in micro interference fit with the spherical pad 1301 and is in clearance fit with the spherical bolt 1302, the positioning hole is a step-shaped hole with a small upper inner diameter and a large lower inner diameter, and a radial flange is arranged at the lower end of the positioning sleeve 1304. The radial flange of the outer surface of the lower part of the positioning sleeve 1304 is fitted in the annular groove 1306 of the stepped hole at the corresponding position inside the spherical bolt 1302, and the function of preventing the spherical pad 1301 from being lost due to the separation of the spherical pad 1301 and the spherical bolt 1302 when the spherical adjusting pad is not used is achieved. When in pre-installation, the length of the meshing threads of the spherical bolt 1302 and the round nut 1303 is adjusted through the adjusting blind holes of the spherical bolt 1302 and the round nut 1303, so that the adjustment of the adjusting nut H1-H2 within the height range is realized. The spherical contact parts of the spherical pad 1301 and the spherical bolt 1302 can realize self-adaptive adjustment of levelness, so that automatic adjustment in a certain range is realized.
The adjustment is divided into two parts: 1) after the base is in place according to the figure 1, adjusting and adjusting the inclined sizing block to enable the base to be horizontal, penetrating foundation bolts and grouting; 2) after the base is used for a period of time, if the base deflects due to reasons such as foundation subsidence, the spherical surface adjusting structure of the spherical surface adjusting cushion plays a role, the upper concave spherical surface and the lower convex spherical surface are self-adaptive to be leveled, and the absolute level of the upper plane of the spherical surface adjusting cushion can be always kept, namely the spherical structure eliminates errors such as foundation subsidence and the like, so that the base is always kept level.
The main machine auxiliary base 3 is a sectional material assembly welding piece such as I-steel, and is divided into three specifications of large, medium and small according to machine types, the main machine auxiliary base of each specification is of a composite structure, for example, the innermost main machine auxiliary base indicated by a serial number 3 in a legend is a main machine auxiliary base of a large-scale machine, the type of the main machine unit is provided with structures such as two rows, four rows and six rows, the sizes of positioning bolts of all structures are different, and the main machine auxiliary base can realize the installation and fixation of all large, medium and small main machines by integrating the fixing modes of all machine types, and is provided with an oil collecting tank, so that the waste lubricating oil of the main machine can be conveniently collected and treated.
The transmission system has a certain flexible adjusting function, can adapt to crankshaft heads with various structural forms and the center height of a main machine, namely different types of units can be installed in place at one time without repeated adjustment and centering alignment. As shown in fig. 5 and 6, the testing device comprises a main machine shaft connecting piece 17 connected with a main machine shaft 16 to be tested, a flywheel 18 connected with the main machine shaft connecting piece, a flexible long shaft connector 19 connected with the flywheel, and a motor shaft connecting piece 20 connected with the other end of the flexible long shaft connector, wherein the motor shaft connecting piece 20 is connected with a testing motor shaft 21. The flexible long shaft connector can realize self adjustment of a host and a motor non-centering transmission system within 3 degrees, so that each central high machine type can be accurately positioned at one time, the height of the host or the motor is not required to be repeatedly adjusted in a manner of increasing or decreasing gaskets, and the centering requirement (the centering requirement of the host and the motor of a conventional coupler is 0.05mm and is about 0.4 degree) is met.
In this embodiment, the main shaft connecting part 17 includes a shaft sleeve and a connecting disc connected with the shaft sleeve, the shaft sleeve is used for sleeving a main shaft to be tested, the shaft sleeve and the main shaft are connected through a key, the connecting disc is perpendicular to the shaft sleeve, and the shaft sleeve is connected with a flywheel. Specifically, the size of an inner hole of the shaft sleeve is slightly larger than the outer diameter of a host shaft to be wrapped, so that the shaft sleeve is convenient to assemble on the host shaft, the shaft sleeve and the host shaft are connected in a straight shaft with a key, and then 2 groups of compression bolts are adopted to compress the key, so that a certain radial force is provided, and when a small gap between the host shaft and the shaft sleeve is eliminated, the radial force compression force generates friction force to do work, so that the shaft sleeve drives the host shaft to rotate; the connecting disc is provided with a plurality of groups of hole sites, and the quick replacement of various flywheels is realized by selecting different hole sites and adopting two groups of bolts to connect the shaft sleeves with different forms of flywheels;
the flywheel 18 includes a flywheel body with a plurality of rings of bolt mounting holes. Connected with the main shaft connecting piece 17 and the flexible long shaft connector 19 through bolt sets.
The flexible long shaft connector is a cross shaft type integral fork head universal joint structure, and the structure can realize radial self-adaptive adjustment. The connecting device comprises a connecting disc 1901, a connecting shaft 1902, a connecting shaft 1903 and a connecting disc 1904. One end of the connecting disc 1901 is in a disc shape and can be connected with other parts through bolts, and the other end of the connecting disc 1901 is half of a cross universal joint structure and forms a complete cross universal joint structure with the other half of the cross universal joint structure of the connecting shaft 1902. One end of the connecting shaft 1902 is a half of a cross shaft universal joint structure, and the other end of the cross shaft universal joint structure which forms a complete cross shaft universal joint structure with the other half of the cross shaft universal joint structure of the connecting disc 1901 is a hole-shaped structure, the right side part of the connecting shaft 1903 can be inserted into the left side part of the connecting shaft 402, the axial size of the device can be adjusted through the length of the inserted part, and a positioning device is arranged at an outer dead center and an inner dead center to prevent the connecting shaft 1902 and the connecting shaft 1903 from. The connecting shaft 1903 and the connecting disc 1904 are similar in structure to the connecting shaft 1902 and the connecting disc 1901. The two groups of cross shaft universal joint structures can realize the radial self-adaptive adjustment of the device.
The motor shaft connecting piece 20 comprises a motor shaft sleeve and a connecting disc connected with the motor shaft sleeve, the connecting disc is connected with the other end of the flexible long shaft connector, and the motor shaft sleeve is in interference fit with the motor shaft 21.
In the embodiment, the driving system is mainly a motor and provides power for the device, and the frequency conversion control is performed; the auxiliary base 5 of the driving device is an auxiliary base 5 of the motor, has a structure similar to that of the auxiliary base 2 of the main machine, and is used for fixing the test motor.
The lubricating system function is for providing lubricating oil to test device, and this lubricated oil circuit is circulating structure, only need regularly according to liquid level indicator suggestion supply lubricating oil can, lubricating station through pre-buried pipeline with filter the sled and treat that the test compressor host computer is connected. The main structure of the lubricating station comprises an oil tank (containing a liquid level indicator, a sewage discharge and inspection port), a cover plate, a plurality of oil pumps, valves and other components, wherein an oil collecting groove is formed around the cover plate for collecting waste oil. The lubricating station can meet the test of various lubricating type hosts;
the filtering pry 9 mainly has the functions of filtering the circulating lubricating oil and performing secondary filtration, and mainly comprises a filter, a valve piece, a pipeline and the like; the lubricating system is also provided with a cooling system 10, the main function of which is to cool the lubricating oil, the cooling system can be opened and closed according to the actual needs (the temperature is low in winter, the lubricating oil can directly enter the test system without cooling), and the cooling system mainly comprises a cooler, valves and pipelines.
The electric control system is a control part of the whole device, control functions of starting and stopping the device, frequency modulation of each motor, selection and revision of a test stage and the like are all realized, and the electric control system mainly comprises a PLC (programmable logic controller), a frequency converter and a control console; the three stages of the test can be automatically or manually controlled at the control console, and the electric control system can automatically add oil, supplement oil, discharge oil and control the rotating speed and the test stage of each stage.
After the test unit is assembled, the test unit is positioned on the main machine auxiliary base 3, and the main machine is connected with the auxiliary base 3 through bolts; a main machine (a shaft sleeve is arranged on a main machine crankshaft head) and a transmission system 4 are connected by using bolts; starting a test device on a control console 8, entering a test program, clicking to start, entering an automatic test program, or respectively carrying out three stages of a compressor host no-load running test in stages of flushing, idle running and idle running with a cylinder; the system can automatically add oil, supplement oil, discharge oil and control the rotating speed and the test stage at each level, thereby realizing full-automatic operation. In the test process, the control console can display key parameters such as motor frequency, rotating speed, current, voltage, oil temperature and oil pressure, and can utilize external equipment to complete parameters such as shaft power, noise, vibration and temperature of parts of the unit to be tested.
Claims (10)
1. The utility model provides a compound natural gas compressor host computer no load operation test device, includes base, host system, transmission system, actuating system, lubricating system and electrical system, its characterized in that: the main machine system comprises a main machine auxiliary base arranged on the base and a main machine to be tested arranged on the main machine auxiliary base, the main machine auxiliary base is divided into multiple specifications according to machine types and used for installing different types of machine sets, the driving system comprises a driving device auxiliary base and a driving device arranged on the driving device auxiliary base, the driving device auxiliary base is divided into multiple specifications and used for installing different types of driving devices, the transmission system is used for connecting the driving device and connected with a corresponding main machine shaft to be tested, the lubricating system is used for providing lubricating oil for the main machine to be tested, and the electric control system is respectively used for controlling the main machine system, the driving system and the lubricating system.
2. The no-load operation test device for the host machine of the compound natural gas compressor as claimed in claim 1, characterized in that: the transmission system comprises a main machine shaft connecting piece connected with a main machine shaft to be tested, a flywheel connected with the main machine shaft connecting piece, a flexible long shaft connector connected with the flywheel and a motor shaft connecting piece connected with the other end of the flexible long shaft connector, and the motor shaft connecting piece is connected with a test motor shaft.
3. The no-load operation test device for the host machine of the compound natural gas compressor as claimed in claim 2, characterized in that: the flexible long shaft connector comprises a connecting shaft, a half part of a cross universal joint structure and a connecting disc, wherein the half part of the cross universal joint structure and the connecting disc are symmetrically arranged at two ends of the connecting shaft, one end of the connecting disc is of a disc-shaped structure used for being connected with other parts, the other end of the connecting disc is of a half part of the cross universal joint structure, and the connecting disc and the other half part of the cross universal joint structure of the connecting shaft form a complete cross universal joint structure.
4. The no-load operation test device for the main engine of the compound natural gas compressor according to claim 2 or 3, characterized in that: the host shaft connecting piece comprises a shaft sleeve and a connecting disc connected with the shaft sleeve, the shaft sleeve is used for sleeving a host shaft to be tested, the host shaft and the connecting disc are connected through a key, the connecting disc is perpendicular to the shaft sleeve, and the shaft sleeve is connected with a flywheel.
5. The no-load operation test device for the main engine of the compound natural gas compressor according to claim 2 or 3, characterized in that: the motor shaft connecting piece comprises a motor shaft sleeve and a connecting disc connected with the motor shaft sleeve, the connecting disc is connected with the other end of the flexible long shaft connector, and the motor shaft sleeve is in interference fit with the motor shaft.
6. The no-load operation test device for the main engine of the compound natural gas compressor according to claim 1 or 2, characterized in that: the base passes through self-adaptation foundation bolt that floats and links to each other with the ground, the base is installed on the ground through inclined plane base adjustment pad, foundation bolt's lower extreme passes through grout structure and links to each other with the ground, and the upper end links to each other with lock nut in the base connecting hole, the base connecting hole is big-end-up's step hole in aperture, is equipped with the sphere adjustment pad in the step department in step hole, the sphere adjustment pad suit is on foundation bolt, and its upper end portion passes through lock nut pressure equipment step hole department.
7. The no-load operation test device for the host machine of the compound natural gas compressor as claimed in claim 6, characterized in that: the base adjusting pad comprises two adjusting blocks with inclined planes and an adjusting screw rod, wherein the two adjusting blocks are matched through the inclined planes, and the adjusting screw rod is in threaded connection with one adjusting block through threads.
8. The no-load operation test device for the host machine of the compound natural gas compressor as claimed in claim 6, characterized in that: the spherical adjusting pad comprises a spherical pad, a spherical bolt matched with the lower end of the spherical pad through a spherical surface, a round nut connected with the lower surface of the spherical bolt through threads, and a positioning sleeve arranged in the positioning hole of the spherical bolt, wherein the spherical pad is sleeved at the upper end of the positioning sleeve.
9. The no-load operation test device for the main engine of the compound natural gas compressor according to claim 1 or 2, characterized in that: the lubricating system is connected with the filtering pry and the host to be tested through the embedded pipeline, the lubricating system comprises an oil tank, a plurality of oil pumps and a control valve assembly, and oil collecting grooves are formed in the periphery of the cover plate to collect waste oil.
10. The no-load operation test device for the main engine of the compound natural gas compressor according to claim 1 or 2, characterized in that: the electric control system comprises a PLC (programmable logic controller), a frequency converter and a control console, test programs of running stages of a 'flushing', 'idle running-in with cylinder' host can be displayed on the control console, three stages of tests can be automatically or manually controlled at the control console, and the electric control system can automatically perform oil filling, oil supplementing and oil discharging and control of rotating speeds and test stages at all levels.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112081737A (en) * | 2020-09-17 | 2020-12-15 | 中石化石油机械股份有限公司 | Compound natural gas compressor host computer no-load operation test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112081737A (en) * | 2020-09-17 | 2020-12-15 | 中石化石油机械股份有限公司 | Compound natural gas compressor host computer no-load operation test device |
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