CN213176092U - Centrifugal compressor basic level testing arrangement that can make up formula and adjust - Google Patents
Centrifugal compressor basic level testing arrangement that can make up formula and adjust Download PDFInfo
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- CN213176092U CN213176092U CN202021209962.5U CN202021209962U CN213176092U CN 213176092 U CN213176092 U CN 213176092U CN 202021209962 U CN202021209962 U CN 202021209962U CN 213176092 U CN213176092 U CN 213176092U
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Abstract
The utility model discloses a centrifugal compressor basic level testing device capable of being adjusted in a combined mode, wherein an inlet guide vane bracket is installed on the open side of a basic level testing spiral case, an inlet fluid director is installed in the inlet guide vane bracket, a plurality of inlet guide vanes are installed in the inlet guide vane bracket along the radial direction, and the inlet guide vanes are driven and adjusted through an inlet guide vane adjusting mechanism; a diffuser guide vane bracket is installed in the basic-level test volute, a plurality of diffuser guide vanes are installed on the diffuser guide vane bracket, and the diffuser guide vanes are driven and adjusted through a diffuser guide vane adjusting mechanism; the utility model discloses a combination of import stator adjustment mechanism and diffuser stator adjustment mechanism has realized the combination regulation of import stator and diffuser stator, can also carry out the variable speed as required and adjust, provides better equipment guarantee for the test of basic level. The utility model discloses can satisfy the test function of multiple basic level, easy operation is accurate, save test piece cost of manufacture and test cost.
Description
Technical Field
The utility model belongs to the centrifugal compressor field relates to the basic level, concretely relates to centrifugal compressor basic level testing arrangement that can make up formula regulation.
Background
Centrifugal compressors play a very important role in various fields of national economy, are widely applied in the industrial fields of metallurgy, petrifaction, coal chemical industry, natural gas transportation, refrigeration, power and the like, and are called as 'heart' equipment. How to ensure the long-term, efficient and stable operation of the centrifugal compressor is one of the core problems which are commonly concerned by the model selection design and the field control of the compressor. At present, the model selection design of the centrifugal compressor is mostly carried out according to a modeling method, wherein a basic level is used as a source of the modeling design of the compressor, and the performance of the basic level directly determines the performance and the energy consumption level of the compressor product.
The experimental test method, as the most intuitive and effective means for verifying the performance of the basic level, is still one of the important works of the current basic level development and optimization. In addition, the basic level experimental test method is often used as an indispensable verification measure for other basic level development methods to finally verify and confirm the actual performance and operation effect of the newly developed basic level. Therefore, performance testing of the basic stages of a centrifugal compressor is critical to compressor design and technology development.
The basic-level Performance Test method and Test system composition of a typical centrifugal compressor are generally designed and implemented by referring to the standard specification of the Performance Test of the centrifugal compressor, such as ASME PTC10-1997 Performance Test Code on Compressors and Exhaustors, JB/T3165-.
Because the running parameters of the matched process system of the centrifugal compressor inevitably change in the actual production running, the centrifugal compressor is usually not operated at a certain specific working condition point, but the running working condition of the compressor is adjusted in real time according to the production requirement. The currently commonly used centrifugal compressor adjusting modes mainly include 5 types: the method comprises the following steps of inlet throttling, outlet throttling, adjustable inlet guide vanes, adjustable blade diffusers and variable rotating speed adjustment, wherein the last three adjusting modes are only suitable for compressors adopting centrifugal basic-level designs matched with the inlet throttling, outlet throttling, adjustable inlet guide vanes, adjustable blade diffusers and variable rotating speed adjustment. Therefore, the performance test work of the centrifugal basic stage needs to be carried out by combining the practical applied adjusting means of the compressor or the originally applied combined adjusting means of the basic stage design. In addition, the centrifugal basic stage of the vaned diffuser with fixed vane angles generally has a plurality of matching diffuser vane angles for use in compressor design selection, and for such basic stage, the performance of the basic stage with a plurality of diffuser vane angles also needs to be tested.
At present, the commonly used basic level performance test methods mainly include: single adjustment means and combined adjustment means. Wherein, the basic level test method of the single adjusting means mainly refers to variable speed adjustment. The combined adjusting means comprises: the adjustable inlet guide vane and the variable rotating speed are combined and adjusted, and the adjustable blade diffuser and the variable rotating speed are combined and adjusted.
The existing basic level test methods all have certain limitations, such as: the basic level test method adopting the variable-speed single-item adjusting means is only suitable for the performance test of the basic level without the inlet guide vane and adopting the vaneless diffuser; the combined adjusting method of the adjustable inlet guide vane and the variable rotating speed is only suitable for the performance test of the basic stage of the vaneless diffuser; the adjustable blade diffuser and the variable rotating speed are combined and adjusted, and the device is only suitable for the performance test of the basic stage of the diffuser without the inlet guide vanes and with the blades.
Disclosure of Invention
Not enough to prior art exists, the utility model aims to provide a centrifugal compressor basic level testing arrangement that can make up formula regulation solves the technical problem that basic level test among the prior art is difficult to be applicable to multiple means of regulation.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a centrifugal compressor basic level testing device capable of being adjusted in a combined mode comprises a basic level testing volute, one side of the basic level testing volute is open, the other side of the basic level testing volute is closed, a circle of volute chamber is arranged on the circumferential inner wall of the basic level testing volute, and an exhaust air duct communicated with the volute chamber is arranged on the volute chamber; an impeller is arranged in the basic-level test volute, an inlet of the impeller faces to the open side of the basic-level test volute, an outlet of the impeller faces to the volute chamber, and the impeller drives a main shaft to rotate through the impeller extending out of the closed side of the basic-level test volute;
an inlet guide vane bracket is installed on the open side of the basic-level test volute, an inlet fluid director is installed in the inlet guide vane bracket, a plurality of inlet guide vanes are installed in the inlet guide vane bracket along the radial direction, vane handles of the inlet guide vanes are arranged outwards in the radial direction, vanes of the inlet guide vanes are arranged inwards in the radial direction, the vane handles of the inlet guide vanes penetrate through inlet guide vane installation holes formed in the inlet guide vane bracket and extend out of the inlet guide vane bracket, and the inlet guide vanes are driven and adjusted through an inlet guide vane adjusting mechanism;
a diffuser guide vane bracket is installed in the basic-level test volute, a plurality of diffuser guide vanes are installed on the diffuser guide vane bracket, and the diffuser guide vanes are driven and adjusted through a diffuser guide vane adjusting mechanism;
the inlet guide vane bracket comprises an air inlet air duct section, an installation section and a diversion shrinkage section which are sequentially and integrally arranged, the contracted open end part of the diversion shrinkage section is close to the edge of a wheel cover side impeller sealing body which is not in contact with an impeller, an end cover is arranged on the outer wall of the diversion shrinkage section, and the end cover is arranged on the open side of the basic-level test volute so that the whole inlet guide vane bracket is arranged on the open side of the basic-level test volute.
The inlet guide vane adjusting mechanism comprises a first linkage ring, the first linkage ring is sleeved outside the installation section, a plurality of first roller bearings are uniformly distributed on one side of the first linkage ring in an equal-diameter mode, a circle of first guide rail groove is formed in the outer wall of the installation section along the circumferential direction, the first roller bearings are clamped in the first guide rail groove to support the first linkage ring, the first linkage ring is not in contact with the installation section, and when the first linkage ring rotates circumferentially around the installation section, the first roller bearings move circumferentially in the first guide rail groove;
an inlet guide vane protective cover sleeved outside the mounting section is arranged outside the first linkage ring, an angular travel actuator is fixedly mounted on the inlet guide vane protective cover, a rotating shaft of the angular travel actuator is connected with one end of a first driving gear shaft extending out of the inlet guide vane protective cover to drive the first driving gear shaft to rotate, a first large gear is fixedly mounted at the other end of the first driving gear shaft and meshed with a first arc-shaped rack concentrically arranged at the other side of the first linkage ring, and the rotating shaft of the angular travel actuator drives the first linkage ring to move circumferentially;
the outer edge of the first linkage ring is uniformly provided with hinged joints which are in one-to-one correspondence with the plurality of inlet guide vanes along the radial direction outwards, each hinged joint is hinged with one end of one first linkage plate, the other end of each first linkage plate is hinged with one end of one first crank, the other end of each first crank is fixedly connected with a blade handle of one inlet guide vane extending out of the installation section, and each inlet guide vane is driven to rotate by taking the respective radial central shaft as a rotating central shaft under the circumferential rotation of the first linkage ring, so that the driving adjustment of the inlet guide vanes is realized;
the diffuser guide vane bracket comprises a second positioning installation barrel with an open end, an annular disc is arranged at the other end of the second positioning installation barrel, a circle of compression flange is arranged at the edge of the open end of the second positioning installation barrel, the second positioning installation barrel is sleeved in the basic-level test volute, the compression flange is arranged on a compression step platform arranged at the inner edge of the open side of the basic-level test volute, and the installation of the diffuser guide vane bracket is realized through the compression flange assembled and compressed by the end cover of the inlet guide vane bracket and the open side of the basic-level test volute;
the impeller is positioned in a central hole of the annular disc, the side edge of a wheel cover of an outlet of the impeller and the annular disc are positioned in the same axial section, and the inner edge of the central hole of the annular disc is close to but not in contact with the side edge of the wheel cover of the outlet of the impeller; an annular impeller sealing body is fixedly arranged at the position, close to the central hole, of the inner side of the annular disc, and the impeller sealing body is close to but not in contact with a wheel cover of the impeller;
diffuser guide vane mounting holes which are in one-to-one correspondence with a plurality of diffuser guide vanes are formed in an annular disc of the diffuser guide vane bracket, a blade handle of each diffuser guide vane is axially arranged, blades of each diffuser guide vane are radially and outwardly bent and distributed, the inner end of each blade of each diffuser guide vane is vertically fixed on the corresponding blade handle, the blade handle of each diffuser guide vane is mounted in the diffuser guide vane mounting holes, the blade handle of each diffuser guide vane can rotate in the diffuser guide vane mounting holes, and the blades of the diffuser guide vanes are positioned on the outer side of the annular disc;
the diffuser guide vane adjusting mechanism comprises a second coupling ring, the second coupling ring is sleeved outside the impeller sealing body, a plurality of second roller bearings are uniformly distributed on one side of the second coupling ring in an equal-diameter mode, a circle of second guide rail groove is formed in the outer wall of the impeller sealing body along the circumferential direction, the second roller bearings are clamped in the second guide rail groove to support the second coupling ring, the second coupling ring is not in contact with the impeller sealing body, and when the second coupling ring rotates circumferentially around the impeller sealing body, the second roller bearings move circumferentially in the second guide rail groove;
a straight stroke actuator is fixedly installed outside the basic-level test volute, the end part of the straight stroke actuator is hinged with one end of a second linkage plate, the other end of the second linkage plate extends into the inlet guide vane shield, one end of a second drive gear shaft which is axially arranged is vertically and fixedly installed at the other end of the second linkage plate, the other end of the second drive gear shaft penetrates through the end cover of the inlet guide vane bracket, a second large gear is fixedly installed at the end part of the other end of the second drive gear shaft, and the second large gear is meshed with a second arc-shaped rack which is concentrically arranged at one side of a second linkage ring, so that the telescopic rod of the straight stroke actuator stretches and retracts to drive the second linkage ring to move circumferentially;
the second coupling ring is provided with driving strip grooves which correspond to the diffuser guide vanes one by one, the driving strip grooves penetrate through two sides of the second coupling ring, each driving strip groove is internally clamped with one driving rod, one end of each driving rod is vertically fixed at one end of a second crank, and the other end of each second crank is vertically and fixedly provided with a blade handle extending into the diffuser guide vanes on the inner side of the annular disc;
under the circumferential rotation of the second linkage ring, the blade handle of each diffuser guide blade is driven to rotate by taking the respective axial central shaft as a rotating central shaft, so that the blade angle of each diffuser guide blade is driven to change, and the driving adjustment of the diffuser guide blade is realized.
The utility model discloses still have following technical characteristic:
the inlet fluid director comprises a first positioning installation cylinder which is attached to and sleeved in the air inlet air cylinder section, and an inlet flow line head is fixedly and coaxially arranged in the first positioning installation cylinder through a rib plate.
The end fixing of the pivot of angle stroke executor be provided with the internal tooth sleeve, the fixed first pinion that is provided with of one end of first drive gear axle, first pinion suit is intermeshing in the internal tooth sleeve for angle stroke executor drives first drive gear axle and rotates.
The other end of the second linkage plate is provided with an inner tooth hole, one end of the second driving gear shaft is fixedly provided with a second pinion, and the second pinion is sleeved in the inner tooth hole to be meshed with each other, so that the straight stroke actuator drives the second driving gear shaft to rotate.
The first driving gear shaft is arranged on the inlet guide vane protecting cover through a first driving gear shaft supporting seat, and the first driving gear shaft is axially arranged and can rotate relative to the first driving gear shaft supporting seat.
The second driving gear shaft is arranged on the inlet guide vane bracket through a second driving gear shaft supporting seat, the second driving gear shaft supporting seat is arranged on the outer wall of the flow guide contraction cylinder section of the inlet guide vane bracket, and the second driving gear shaft can rotate relative to the second driving gear shaft supporting seat.
The hinging is realized by adopting a joint bearing.
And a rolling bearing is arranged at the contact position of the driving rod and the driving strip-shaped groove.
Compared with the prior art, the utility model, following technological effect has:
the utility model discloses a combination of import stator adjustment mechanism and diffuser stator adjustment mechanism has realized the combination regulation of import stator and diffuser stator, can also carry out the variable speed as required and adjust, provides better equipment guarantee for the test of basic level. The utility model discloses can satisfy the test function of multiple basic level, easy operation is accurate, save test piece cost of manufacture and test cost, has practiced thrift the change installation time of each test piece simultaneously, shortens basic level test cycle.
Drawings
Fig. 1 is a schematic external perspective view of a basic stage test device of a centrifugal compressor.
Fig. 2 is a front view structure schematic diagram of a centrifugal compressor basic stage testing device.
FIG. 3 is a side cross-sectional structural schematic view of a centrifugal compressor basic stage test apparatus.
Fig. 4 is a schematic view of the mounting structure of the first link ring.
Fig. 5 is a schematic view of the mounting structure of the second link ring.
Fig. 6 is a schematic structural view of the first link ring.
FIG. 7 is a schematic structural diagram of an inlet guide vane adjusting mechanism.
Fig. 8 is a schematic view of a second link ring.
FIG. 9 is a schematic view of a view angle of a diffuser vane adjustment mechanism.
FIG. 10 is a schematic view of another view of the diffuser vane adjustment mechanism.
FIG. 11 is a schematic view of a diffuser vane carrier configuration.
FIG. 12 is a schematic diagram of a centrifugal basic-level closed performance testing system in an application example.
The meaning of the individual reference symbols in the figures is: 1-basic-level test volute, 2-volute chamber, 3-exhaust wind barrel, 4-impeller, 5-impeller driving main shaft, 6-inlet guide vane bracket, 7-inlet fluid director, 8-inlet guide vane, 9-inlet guide vane adjusting mechanism, 10-inlet guide vane shield, 11-diffuser guide vane bracket, 12-diffuser guide vane, 13-diffuser guide vane adjusting mechanism, 14-impeller sealing body, 15-knuckle bearing, 16-inlet guide vane mounting hole and 17-diffuser guide vane mounting hole;
18-centrifugal compressor basic level testing device capable of being adjusted in a combined mode, 19-gear box, 20-motor, 21-water inlet and outlet pipe, 22-first adjusting valve, 23-second adjusting valve, 24-air inlet and outlet, 25-cooler, 26-air inlet silencer, 27-rectifier grid, 28-motor frequency conversion system, 29-actuator adjusting system, 30-data acquisition system and 31-gas mass spectrometry system;
601-air inlet air cylinder section, 602-installation section, 603-diversion contraction cylinder section, 604-end cover;
701-a first positioning installation cylinder, 702-a rib plate and 703-an inlet flow line head;
901-a first linkage ring, 902-a first roller bearing, 903-a first guide rail groove, 904-an angular travel actuator, 905-a first drive gear shaft, 906-a first gearwheel, 907-a first arc-shaped rack, 908-a hinge joint, 909-a first linkage plate, 910-a first crank, 911-a first pinion and 912-a first drive gear shaft supporting seat;
1101-a second positioning and mounting cylinder, 1102-an annular disc, 1103-a hold-down flange, 1104-a hold-down step,
1301-a second coupling ring, 1302-a second roller bearing, 1303-a second guide rail groove, 1304-a straight stroke actuator, 1305-a second coupling plate, 1306-a second driving gear shaft, 1307-a second large gear, 1308-a second arc-shaped rack, 1309-a driving strip groove, 1310-a driving rod, 1311-a second crank, 1312-a second small gear and 1313-a second driving gear shaft supporting seat.
The following examples are provided to explain the present invention in further detail.
Detailed Description
It is to be noted that all the components and materials of the present invention are known in the art, and the components and materials are not specifically described.
The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and all the equivalent transformations made on the basis of the technical solution of the present application all fall into the protection scope of the present invention.
Example 1:
the embodiment provides a centrifugal compressor basic-level testing device capable of being adjusted in a combined mode, as shown in fig. 1 to 11, the centrifugal compressor basic-level testing device comprises a basic-level testing volute 1 with one open side and the other closed side, a circle of volute chamber 2 is arranged on the circumferential inner wall of the basic-level testing volute 1, and an exhaust air duct 3 communicated with the volute chamber 2 is arranged on the volute chamber 2; an impeller 4 is arranged in the basic-level test volute 1, the inlet of the impeller 4 faces the open side of the basic-level test volute 1, the outlet of the impeller 4 faces the volute chamber 2, and the impeller 4 drives a main shaft 5 to rotate through the impeller extending out of the closed side of the basic-level test volute 1;
an inlet guide vane bracket 6 is installed on the open side of the basic-level test volute 1, an inlet fluid director 7 is installed in the inlet guide vane bracket 6, a plurality of inlet guide vanes 8 are installed in the inlet guide vane bracket 6 along the radial direction, vane shanks of the inlet guide vanes 8 are arranged outwards in the radial direction, vanes of the inlet guide vanes 8 are arranged inwards in the radial direction, the vane shanks of the inlet guide vanes 8 penetrate through inlet guide vane installation holes 16 formed in the inlet guide vane bracket 6 to extend out of the inlet guide vane bracket 6, and the inlet guide vanes 8 are driven and adjusted through an inlet guide vane adjusting mechanism 9;
a diffuser guide vane bracket 11 is installed in the basic-level test volute 1, a plurality of diffuser guide vanes 12 are installed on the diffuser guide vane bracket 11, and the diffuser guide vanes 12 are driven and adjusted through a diffuser guide vane adjusting mechanism 13;
the inlet guide vane bracket 6 comprises an air inlet air duct section 601, an installation section 602 and a diversion shrinkage duct section 603 which are sequentially and integrally arranged, the shrunk open end of the diversion shrinkage duct section 603 is close to but not in contact with the edge of the wheel cover side wheel sealing body 14 of the impeller 4, an end cover 604 is arranged on the outer wall of the diversion shrinkage duct section 603, and the end cover 604 is arranged on the open side of the basic-level test volute 1, so that the whole inlet guide vane bracket 6 is arranged on the open side of the basic-level test volute 1.
The inlet guide vane adjusting mechanism 9 comprises a first linkage ring 901, the first linkage ring 901 is sleeved outside the installation section 602, a plurality of first roller bearings 902 are uniformly distributed on one side of the first linkage ring 901 in an equal diameter manner, a circle of first guide rail groove 903 is formed in the outer wall of the installation section 602 along the circumferential direction, the plurality of first roller bearings 902 are clamped in the first guide rail groove 903 to support the first linkage ring 901, so that the first linkage ring 901 is not in contact with the installation section 602, and when the first linkage ring 901 rotates circumferentially around the installation section 602, the plurality of first roller bearings 902 move circumferentially in the first guide rail groove 903;
an inlet guide vane shield 10 sleeved outside the mounting section 602 is arranged outside the first linkage ring 901, an angular travel actuator 904 is fixedly mounted on the inlet guide vane shield 10, a rotating shaft of the angular travel actuator 904 is connected with one end of a first driving gear shaft 905 extending out of the inlet guide vane shield 10 to drive the first driving gear shaft 905 to rotate, a first large gear 906 is fixedly mounted at the other end of the first driving gear shaft 905, and the first large gear 906 is meshed with a first arc-shaped rack 907 concentrically arranged at the other side of the first linkage ring 901 to enable the rotating shaft of the angular travel actuator 904 to drive the first linkage ring 901 to move circumferentially;
the outer edge of the first linkage ring 901 is uniformly provided with hinges 908 corresponding to the inlet guide vanes 8 one by one along the radial direction, each hinge 908 is hinged with one end of a first linkage plate 909, the other end of each first linkage plate 909 is hinged with one end of a first crank 910, the other end of each first crank 910 is fixedly connected with a blade handle of an inlet guide vane 8 extending out of the mounting section 602, and each inlet guide vane 8 is driven to rotate by taking a respective radial central shaft as a rotating central shaft under the circumferential rotation of the first linkage ring 901, so that the driving adjustment of the inlet guide vane 8 is realized;
the diffuser guide vane bracket 11 comprises a second positioning and mounting cylinder 1101 with one open end, an annular disc 1102 is arranged at the other end of the second positioning and mounting cylinder 1101, a ring of compression flange 1103 is arranged at the edge of the open end of the second positioning and mounting cylinder 1101, the second positioning and mounting cylinder 1101 is sleeved in the basic-stage test volute 1, the compression flange 1103 is arranged on a compression step 1104 arranged at the inner edge of the open side of the basic-stage test volute 1, and the compression flange 1103 is assembled by the end cover 604 of the inlet guide vane bracket 6 and the open side of the basic-stage test volute 1, so that the diffuser guide vane bracket 11 is mounted;
the impeller 4 is positioned in a central hole of the annular disc 1102, the shroud side edge of the outlet of the impeller 4 is positioned in the same axial section with the annular disc 1102, and the inner edge of the central hole of the annular disc 1102 is close to but not contacted with the shroud side edge of the outlet of the impeller 4; an annular impeller sealing body 14 is fixedly arranged at a position close to the central hole on the inner side of the annular disc 1102, and the impeller sealing body 14 is close to but not contacted with a wheel cover of the impeller 4;
diffuser guide vane mounting holes 17 corresponding to the plurality of diffuser guide vanes 12 one by one are formed in an annular disc 1102 of the diffuser guide vane bracket 11, a vane handle of each diffuser guide vane 12 is axially arranged, a vane of each diffuser guide vane 12 is radially and outwardly bent and distributed, the inner end of the vane of each diffuser guide vane 12 is vertically fixed on the corresponding vane handle, the vane handle of each diffuser guide vane 12 is installed in the diffuser guide vane mounting hole 17, the vane handle of the diffuser guide vane 12 can rotate in the diffuser guide vane mounting hole 17, and the vane of the diffuser guide vane 12 is positioned on the outer side of the annular disc 1102;
the diffuser guide vane adjusting mechanism 13 comprises a second linkage ring 1301, the second linkage ring 1301 is sleeved outside the impeller sealing body 14, a plurality of second roller bearings 1302 are uniformly distributed on one side of the second linkage ring 1301 in an equal-diameter mode, a circle of second guide rail groove 1303 is formed in the outer wall of the impeller sealing body 14 along the circumferential direction, the second roller bearings 1302 are clamped in the second guide rail groove 1303 to support the second linkage ring 1301, the second linkage ring 1301 is not in contact with the impeller sealing body 14, and when the second linkage ring 1301 rotates circumferentially around the impeller sealing body 14, the second roller bearings 1302 move circumferentially in the second guide rail groove 1303;
a straight stroke actuator 1304 is fixedly installed outside the basic-level test volute 1, one end of a second linkage plate 1305 is hinged to the end of the straight stroke actuator 1304, the other end of the second linkage plate 1305 extends into the inlet guide vane shield 10, one end of a second driving gear shaft 1306 which is axially arranged is vertically and fixedly installed at the other end of the second linkage plate 1305, the other end of the second driving gear shaft 1306 penetrates through an end cover 604 of the inlet guide vane bracket 6, a second large gear 1307 is fixedly installed at the end of the other end of the second driving gear shaft 1306, and the second large gear 1307 is meshed with a second arc-shaped rack 1308 which is concentrically fixed on one side of a second linkage ring 1301, so that the expansion and contraction of a telescopic rod of the straight stroke actuator 1304 drives the second linkage ring 1301 to move circumferentially;
driving strip-shaped grooves 1309 which correspond to the diffuser guide vanes 12 one by one are arranged on the second linkage ring 1301, the driving strip-shaped grooves 1309 penetrate through two sides of the second linkage ring 1301, a driving rod 1310 is clamped in each driving strip-shaped groove 1309, one end of each driving rod is vertically fixed at one end of a second crank 1311, and the other end of each second crank 1311 is vertically and fixedly provided with a vane handle of the diffuser guide vane 12 extending into the inner side of the annular disc 1102;
under the circumferential rotation of the second link ring 1301, the blade handle of each diffuser guide vane 12 is driven to rotate by taking the respective axial central shaft as a rotation central shaft, so that the blade angle of each diffuser guide vane 12 is driven to change, and the driving and the adjustment of the diffuser guide vanes are realized.
The inlet guide vanes 8 and diffuser guide vanes 12 are both parts known in the art.
The hinge joint 908 is arranged perpendicular to the linkage plate 909 and the first crank 910 is arranged perpendicular to the petiole of the inlet guide vane 8.
As a specific scheme of this embodiment, the inlet flow guider 7 includes a first positioning installation cylinder 701 fitted and sleeved in the air intake duct section 601, and an inlet flow line head 703 is fixedly and coaxially arranged in the first positioning installation cylinder 701 through a rib plate 702.
Further, the plurality of inlet guide vanes 8 divide the inlet guide vane carrier 6 into a forward air chamber and a rearward air chamber.
As a preferable scheme of this embodiment, an internal gear sleeve is fixedly disposed at an end of a rotating shaft of the angular stroke actuator 904, a first pinion 911 is fixedly disposed at one end of the first driving gear shaft 905, and the first pinion 911 is sleeved in the internal gear sleeve and engaged with the internal gear sleeve, so that the angular stroke actuator 904 drives the first driving gear shaft 905 to rotate. The first pinion 911 makes the whole device easier to disassemble and assemble, and more convenient to repair and replace.
As a preferable scheme of this embodiment, the other end of the second linkage plate 1305 is provided with an internal toothed hole, one end of the second driving gear shaft 1306 is fixedly provided with a second pinion 1312, and the second pinion 1312 is sleeved in the internal toothed hole and meshed with each other, so that the straight stroke actuator 1304 drives the second driving gear shaft 1306 to rotate. The second driving gear shaft 1306 is arranged, so that the whole device is easier to disassemble and assemble, and is more convenient to repair and replace.
As a preferable mode of the present embodiment, the first drive gear shaft 905 is attached to the inlet guide vane shroud 10 through a first drive gear shaft support base 912, and the first drive gear shaft 905 is axially arranged and is rotatable with respect to the first drive gear shaft support base 912. The first drive gear shaft support 912 can stabilize the rotation of the first drive gear shaft 905.
As a preferable mode of the present embodiment, the second driving gear shaft 1306 is mounted on the inlet guide vane carrier 6 by a second driving gear shaft support 1313, the second driving gear shaft support 1313 is provided on the outer wall of the flow guide contracting cylinder section 603 of the inlet guide vane carrier 6, and the second driving gear shaft 1306 is rotatable with respect to the second driving gear shaft support 1313. The second drive gear shaft support 1313 makes the rotation of the second drive gear shaft 1306 more stable.
As a preferred solution of this embodiment, the articulation is realized by means of a joint bearing 15. The knuckle bearing 15 makes the movement of the hinge point more smoothly and stably.
As a preferable aspect of the present embodiment, a rolling bearing is mounted at a position where the driving lever 1310 contacts the driving groove 1309. The rolling bearing makes the movement of the driving rod 1310 in the driving bar groove 1309 smoother.
The utility model is mainly characterized in that the basic level inlet guide vane 8 is adjusted and positioned accurately on line in real time through the inlet guide vane adjusting mechanism 9; the online real-time adjustment and accurate positioning of the angle of the diffuser guide vane 12 are realized through the diffuser guide vane adjusting mechanism 13; the frequency of the motor 20 is changed through the motor frequency conversion system 28 in the centrifugal basic-level closed performance test system, so that the performance test requirements of different rotating speeds/Mach numbers of the basic-level impeller 4 are met.
Adopt the utility model discloses a when centrifugal compressor basic level testing arrangement that can make up formula regulation carries out basic level test, main operating procedure as follows:
step one, before starting the centrifugal basic-level testing device, determining an actuator operating position corresponding to the tested guide vane angle. According to the angles of the inlet guide vane 8 and the diffuser guide vane 12 to be tested, after the actuator is confirmed to be adjusted to the angle with the pointer indicated value as the planned test angle by observing the positions of the inlet guide vane angle indicator pointer and the diffuser guide vane angle indicator pointer, the corresponding actuator operation position is recorded. Taking the inlet guide vane 8 as an example, the opening position of the angular travel actuator 904 of the inlet guide vane 8 is recorded as follows:
step two, transfer the angle of plan test with import stator 8 and diffuser stator 12, under the full open mode of basic level test system governing valve, start the utility model discloses a centrifugal compressor basic level testing arrangement that can make up formula regulation, the rising speed is to plan test rotational speed. Basic level test system is known conventional basic level test system, for example the centrifugal basic level closed type capability test system commonly used in this field, and the difference lies in, changes conventional basic level device in the system into the utility model discloses a centrifugal compressor basic level testing arrangement that can make up formula regulation.
And step three, keeping the angles of the inlet guide vanes 8 and the diffuser guide vanes 12 unchanged at the rotating speed, and performing basic-level performance test. And (3) operating and acquiring the operation data of each working condition point in sequence from the point close to the choke point to the point close to the surge point by adjusting the opening of the adjusting valve of the basic level testing system, thus completing a complete performance curve test of the basic level. The measurement method and the data acquisition method are referred to the known relevant mature literature and industry standard.
And step four, keeping the rotating speed and the angle of the diffuser guide vane 12 unchanged, adjusting the angle of the inlet guide vane 8 to a new angle value through the angular travel actuator 904 of the inlet guide vane 8, and repeating the operation process of the step three to finish another complete performance curve test of the basic level. And sequentially adjusting the opening degree of the angle stroke actuator 904 of the inlet guide vane 8 according to the angle value of the inlet guide vane tested by the basic level plan to finish the test of the corresponding performance curve. And then, testing the basic level performance curves of a group of different inlet guide vane angles under a specific rotating speed and diffuser guide vane angles.
And step five, keeping the rotating speed unchanged, adjusting the diffuser guide vane angle to a new angle value through the straight stroke actuator 1304 of the diffuser guide vane 12, and repeating the operation processes of the step three and the step four to complete the basic-level performance curve test of a group of different inlet guide vane angles under a specific rotating speed and a new diffuser guide vane angle. And according to the diffuser guide vane angle value tested by the basic level plan, sequentially adjusting the opening of the diffuser guide vane actuator to complete the corresponding performance curve test. So far, the test of the basic level performance curve of different inlet guide vane angles under different diffuser guide vane angles at a specific rotating speed is completed.
Step six: and (4) testing the rotating speed value according to the basic level plan, sequentially adjusting the rotating speed of the basic level testing machine to a new planned testing rotating speed through the speed changing system, and repeating the steps II, III, IV and V to complete the basic level performance curve test of different inlet guide vane angles under different diffuser guide vane angles at different rotating speeds.
The following are specifically mentioned: at each test working condition point, the basic level test system stably operates for about 15 minutes after the flow adjustment is finished, and data acquisition can be carried out when the pressure and temperature values of each test point tend to be constant so as to reduce the fluctuation error of test data.
Application example:
certain semi-open basic level capability test work of drum of a shan adopts the utility model provides a combination formula adjusting device and combination formula test method utilize one set of centrifugal basic level closed capability test system, as shown in fig. 12, according to imported stator angle, diffuser blade angle, rotational speed combination regulation mode test, have executed 5 kinds of rotational speeds, 7 kinds of import stator angles, 4 kinds of diffuser stator angles altogether, add up to 160 basic level capability curve tests.
Basic level capability test result accords with the expectation, takes the utility model provides a combined type adjusting device and combined type test method have improved basic level capability test work efficiency and platform position rate of utilization, have reduced basic level capability test's manufacturing cost and artifical time cost, have improved the measuring accuracy, combine closed capability test device simultaneously, have stabilized the test condition on the one hand, and on the other hand is favorable to reducing the test noise, and the noise reduction is to the influence of tester and all ring edge borders.
Claims (8)
1. A centrifugal compressor basic level testing device capable of being adjusted in a combined mode comprises a basic level testing volute (1) with one open side and the other closed side, wherein a circle of volute chamber (2) is arranged on the circumferential inner wall of the basic level testing volute (1), and an exhaust air duct (3) communicated with the volute chamber (2) is arranged on the volute chamber (2); be provided with impeller (4) in basic level test spiral case (1), the import of impeller (4) is towards the open side of basic level test spiral case (1), and the export of impeller (4) is towards volute (2), and impeller (4) drive main shaft (5) through stretching out to the outside of basic level test spiral case (1) closed side drive rotation, its characterized in that:
an inlet guide vane bracket (6) is installed on the open side of the basic-level test volute (1), an inlet fluid director (7) is installed in the inlet guide vane bracket (6), a plurality of inlet guide vanes (8) are installed in the inlet guide vane bracket (6) along the radial direction, vane handles of the inlet guide vanes (8) are arranged outwards in the radial direction, blades of the inlet guide vanes (8) are arranged inwards in the radial direction, the vane handles of the inlet guide vanes (8) penetrate through inlet guide vane mounting holes (16) formed in the inlet guide vane bracket (6) and extend out of the inlet guide vane bracket (6), and the inlet guide vanes (8) are driven and adjusted through an inlet guide vane adjusting mechanism (9);
a diffuser guide vane bracket (11) is installed in the basic-level test volute (1), a plurality of diffuser guide vanes (12) are installed on the diffuser guide vane bracket (11), and the diffuser guide vanes (12) are driven and adjusted through a diffuser guide vane adjusting mechanism (13);
the inlet guide vane bracket (6) comprises an air inlet air cylinder section (601), an installation section (602) and a diversion shrinkage cylinder section (603) which are sequentially and integrally arranged, the shrunk open end of the diversion shrinkage cylinder section (603) is close to but not in contact with the edge of a wheel cover side impeller sealing body (14) of an impeller (4), an end cover (604) is arranged on the outer wall of the diversion shrinkage cylinder section (603), and the end cover (604) is installed on the open side of the basic-level test volute (1) so that the whole inlet guide vane bracket (6) is installed on the open side of the basic-level test volute (1);
the inlet guide vane adjusting mechanism (9) comprises a first linkage ring (901), the first linkage ring (901) is sleeved outside the installation section (602), a plurality of first roller bearings (902) are uniformly distributed on one side of the first linkage ring (901) in an equal-diameter mode, a circle of first guide rail groove (903) is formed in the outer wall of the installation section (602) along the circumferential direction, the first roller bearings (902) are clamped in the first guide rail groove (903) to support the first linkage ring (901), so that the first linkage ring (901) and the installation section (602) are not in contact with each other, and when the first linkage ring (901) rotates circumferentially around the installation section (602), the first roller bearings (902) move circumferentially in the first guide rail groove (903);
an inlet guide vane shield (10) sleeved outside the mounting section (602) is arranged outside the first linkage ring (901), an angular travel actuator (904) is fixedly mounted on the inlet guide vane shield (10), a rotating shaft of the angular travel actuator (904) is connected with one end of a first driving gear shaft (905) extending out of the inlet guide vane shield (10) to drive the first driving gear shaft (905) to rotate, a first large gear (906) is fixedly mounted at the other end of the first driving gear shaft (905), and the first large gear (906) is meshed with a first arc-shaped rack (907) concentrically arranged at the other side of the first linkage ring (901), so that the rotating shaft of the angular travel actuator (904) drives the first linkage ring (901) to move circumferentially;
the outer edge of the first linkage ring (901) is uniformly provided with hinged joints (908) which are in one-to-one correspondence with the inlet guide vanes (8) along the radial direction outwards, each hinged joint (908) is hinged with one end of a first linkage plate (909), the other end of each first linkage plate (909) is hinged with one end of a first crank (910), the other end of each first crank (910) is fixedly connected with a blade handle of one inlet guide vane (8) extending out of the mounting section (602), and each inlet guide vane (8) is driven to rotate by taking a respective radial central shaft as a rotating central shaft under the circumferential rotation of the first linkage ring (901), so that the driving and adjustment of the inlet guide vanes (8) are realized;
the diffuser guide vane bracket (11) comprises a second positioning installation barrel (1101) with one open end, an annular disc (1102) is arranged at the other end of the second positioning installation barrel (1101), a circle of compression flange (1103) is arranged at the edge of the open end of the second positioning installation barrel (1101), the second positioning installation barrel (1101) is sleeved in the basic-stage test volute (1), the compression flange (1103) is installed on a compression step platform (1104) arranged at the inner edge of the open side of the basic-stage test volute (1), and the compression flange (1103) is assembled through an end cover (604) of an inlet guide vane bracket (6) and the open side of the basic-stage test volute (1), so that the diffuser guide vane bracket (11) is installed;
the impeller (4) is positioned in a central hole of the annular disc (1102), the side edge of a wheel cover of an outlet of the impeller (4) and the annular disc (1102) are positioned in the same axial section, and the inner edge of the central hole of the annular disc (1102) is close to but not in contact with the side edge of the wheel cover of the outlet of the impeller (4); an annular impeller sealing body (14) is fixedly arranged at a position, close to the central hole, on the inner side of the annular disc (1102), and the impeller sealing body (14) is close to but not in contact with a wheel cover of the impeller (4);
diffuser guide vane mounting holes (17) which are in one-to-one correspondence with a plurality of diffuser guide vanes (12) are formed in an annular disc (1102) of the diffuser guide vane bracket (11), a vane handle of each diffuser guide vane (12) is axially arranged, blades of each diffuser guide vane (12) are radially and outwardly bent and distributed, the inner end of each blade of each diffuser guide vane (12) is vertically fixed on the corresponding vane handle, the vane handle of each diffuser guide vane (12) is installed in the diffuser guide vane mounting hole (17), the vane handle of each diffuser guide vane (12) can rotate in the diffuser guide vane mounting hole (17), and the blades of each diffuser guide vane (12) are located on the outer side of the annular disc (1102);
the diffuser guide vane adjusting mechanism (13) comprises a second linkage ring (1301), the second linkage ring (1301) is sleeved outside the impeller sealing body (14), a plurality of second roller bearings (1302) are uniformly distributed on one side of the second linkage ring (1301) in an equal-diameter mode, a circle of second guide rail groove (1303) is formed in the outer wall of the impeller sealing body (14) along the circumferential direction, the second roller bearings (1302) are clamped in the second guide rail groove (1303) to support the second linkage ring (1301) in a supporting mode, the second linkage ring (1301) and the impeller sealing body (14) are not in contact, and when the second linkage ring (1301) rotates circumferentially around the impeller sealing body (14), the second roller bearings (1302) move circumferentially in the second guide rail groove (1303);
the basic-level test volute (1) is fixedly provided with a straight stroke actuator (1304) outside, the end of the straight stroke actuator (1304) is hinged with one end of a second linkage plate (1305), the other end of the second linkage plate (1305) extends into the inlet guide vane shield (10), the other end of the second linkage plate (1305) is vertically and fixedly provided with one end of a second driving gear shaft (1306) axially arranged, the other end of the second driving gear shaft (1306) penetrates through an end cover (604) of the inlet guide vane bracket (6), the end of the other end of the second driving gear shaft (1306) is fixedly provided with a second large gear (1307), the second large gear (1307) is meshed with a second arc-shaped rack (1308) concentrically arranged on one side of a second linkage ring (1301), the telescopic rod of the straight stroke actuator (1304) stretches and retracts to drive the second linkage ring (1301) to move circumferentially;
the second linkage ring (1301) is provided with driving strip-shaped grooves (1309) which correspond to diffuser guide vanes (12) one to one, the driving strip-shaped grooves (1309) penetrate through two sides of the second linkage ring (1301), a driving rod (1310) is clamped in each driving strip-shaped groove (1309), one end of each driving rod is vertically fixed at one end of a second crank (1311), and the other end of each second crank (1311) is vertically and fixedly provided with a vane handle of each guide vane diffuser (12) extending into the inner side of the annular disc (1102);
under the circumferential rotation of the second linkage ring (1301), a blade handle of each diffuser guide blade (12) is driven to rotate by taking the respective axial central shaft as a rotating central shaft, so that the blade angle of each diffuser guide blade (12) is driven to change, and the driving and the adjustment of the diffuser guide blades are realized.
2. The centrifugal compressor basic-level testing device capable of being adjusted in a combined mode according to claim 1, wherein the inlet flow guider (7) comprises a first positioning installation cylinder (701) which is fitted and sleeved in the air inlet air cylinder section (601), and an inlet flow line head (703) is fixedly and coaxially arranged in the first positioning installation cylinder (701) through a rib plate (702).
3. The centrifugal compressor basic-stage testing device capable of combined adjustment according to claim 1, wherein an internal-tooth sleeve is fixedly arranged at an end of a rotating shaft of the angular stroke actuator (904), a first pinion (911) is fixedly arranged at one end of the first driving gear shaft (905), and the first pinion (911) is sleeved in the internal-tooth sleeve and meshed with the internal-tooth sleeve, so that the angular stroke actuator (904) drives the first driving gear shaft (905) to rotate.
4. The modular adjustable centrifugal compressor basic stage testing apparatus according to claim 1, wherein the other end of the second linkage plate (1305) is provided with an internal gear hole, one end of the second driving gear shaft (1306) is fixedly provided with a second pinion (1312), and the second pinion (1312) is sleeved in the internal gear hole and meshed with each other, so that the straight stroke actuator (1304) drives the second driving gear shaft (1306) to rotate.
5. The modular adjustable centrifugal compressor basic stage testing apparatus according to claim 1, wherein the first drive gear shaft (905) is mounted on the inlet guide vane shroud (10) by a first drive gear shaft support block (912), the first drive gear shaft (905) being axially disposed and rotatable relative to the first drive gear shaft support block.
6. The modular adjustable centrifugal compressor basic stage testing apparatus according to claim 1, wherein the second drive gear shaft (1306) is mounted to the inlet guide vane carrier (6) by a second drive gear shaft support block (1313), the second drive gear shaft support block (1313) being disposed on an outer wall of the inducer section (603) of the inlet guide vane carrier (6), the second drive gear shaft (1306) being rotatable relative to the second drive gear shaft support block (1313).
7. A centrifugal compressor basic stage testing device capable of combined regulation according to claim 1, characterised in that the articulations are all carried out using knuckle bearings (15).
8. The modular adjustable basic level testing device of centrifugal compressors according to claim 1, characterized in that the rolling bearings are mounted at the position where the driving rod (1310) is in contact with the driving strip (1309).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113883089A (en) * | 2021-10-29 | 2022-01-04 | 中国航发沈阳发动机研究所 | Angle adjusting mechanism for stator blade of aero-engine |
| CN114992167A (en) * | 2022-06-27 | 2022-09-02 | 哈尔滨工业大学 | Guide vane mounting angle adjusting device of annular cascade outer channel |
| CN116571011A (en) * | 2023-05-29 | 2023-08-11 | 上海协微环境科技有限公司 | Dehumidification cyclone device and tail gas treatment system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113883089A (en) * | 2021-10-29 | 2022-01-04 | 中国航发沈阳发动机研究所 | Angle adjusting mechanism for stator blade of aero-engine |
| CN114992167A (en) * | 2022-06-27 | 2022-09-02 | 哈尔滨工业大学 | Guide vane mounting angle adjusting device of annular cascade outer channel |
| CN116571011A (en) * | 2023-05-29 | 2023-08-11 | 上海协微环境科技有限公司 | Dehumidification cyclone device and tail gas treatment system |
| CN117662524A (en) * | 2024-01-29 | 2024-03-08 | 诺顿风机(潍坊)有限公司 | Movable vane adjustable axial flow fan with movable guide vane |
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