Stationary blade adjusting and controlling device of axial flow compressor

Abstract

The utility model relates to the technical field of axial flow compressors, and provides an axial flow compressor stationary blade adjusting control device, an integrated valve block is provided with a first inlet, a first outlet, a second inlet and a second outlet, and the first inlet and the second inlet are both used for being connected with a hydraulic station; the servo valve is arranged on the integrated valve block, the first inlet and the second inlet are both connected with the inlet end of the servo valve, one outlet end of the servo valve is connected with the first outlet, and the other outlet end of the servo valve is connected with the second outlet; pressure transmitters are arranged at the first outlet and the second outlet; the first outlet and the second outlet are respectively connected with one of a left cavity and a right cavity of the servo oil cylinder, and the movable end of the servo oil cylinder is connected with the adjusting cylinder; and the pressure transmitter, the control system and the servo oil cylinder are electrically connected in sequence. By means of the technical scheme, the problems that in the related technology, a control system can detect the pressure of the hydraulic main pipe, but the pressure change of the servo oil cylinder cannot be accurately monitored are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow compressors, and in particular to a stationary blade regulating control device for an axial flow compressor. Background Art

[0002] The blast system is an important link in the blast furnace ironmaking production process. The stable operation of the blast system is of great significance to the smooth operation of the blast furnace. Blast furnace ironmaking has high requirements for air volume and air pressure. Fluctuations in air volume are fatal to the blast furnace. The axial flow compressor with adjustable stator blades provides a large range of stable air volume for blast furnace smelting. The large range of stable air volume of the axial flow compressor depends on the stable output of the stator blades. The stator blades are driven by hydraulic drive. The oil pressure fluctuation of the servo cylinder will directly cause the stator blade angle to change, thereby affecting the output of the axial flow compressor. The existing control system can detect the hydraulic main pressure, but the pressure change of the servo cylinder cannot be accurately monitored. Utility Model Content

[0003] The utility model provides an axial compressor stator blade adjustment control device, which solves the problem that the control system in the related art can detect the pressure of the hydraulic main pipe, but the pressure change of the servo oil cylinder cannot be accurately monitored.

[0004] The technical solution of the utility model is as follows: an axial flow compressor stator blade adjustment control device is used to be connected to an adjustment cylinder of the axial flow compressor, and the adjustment cylinder is used to adjust the stator blade angle of the axial flow compressor. The key is: including:

[0005] An integrated valve block, the integrated valve block having a first inlet, a first outlet, a second inlet and a second outlet, the first inlet and the second inlet both being used to connect to a hydraulic station;

[0006] A servo valve, wherein the servo valve is arranged on the integrated valve block, the first inlet and the second inlet are both connected to the inlet end of the servo valve, one outlet end of the servo valve is connected to the first outlet, and the other outlet end of the servo valve is connected to the second outlet;

[0007] A pressure transmitter, wherein the pressure transmitter is disposed at the first outlet and the second outlet;

[0008] A servo oil cylinder, wherein the first outlet and the second outlet are respectively connected to one of the left and right chambers of the servo oil cylinder, and the movable end of the servo oil cylinder is connected to the adjusting cylinder;

[0009] The control system, the pressure transmitter, the control system and the servo cylinder are electrically connected in sequence.

[0010] Also includes,

[0011] A transverse support plate, wherein the integrated valve block is arranged on the transverse support plate;

[0012] A base, the base being located below the transverse support plate;

[0013] A longitudinal support plate, wherein the longitudinal support plate is connected between the transverse support plate and the base, the number of the longitudinal support plates is at least two, and all the longitudinal support plates are arranged in a straight line.

[0014] It also includes a first hydraulic pipeline, one end of which is connected to the first inlet, and the other end of which is used to be connected to the hydraulic station.

[0015] The first hydraulic pipeline is detachably connected to the first inlet, and the first hydraulic pipeline is detachably connected to the hydraulic station.

[0016] It also includes a second hydraulic pipeline, one end of which is connected to the second inlet, and the other end of which is used to be connected to the hydraulic station.

[0017] The second hydraulic pipeline is detachably connected to the second inlet, and the second hydraulic pipeline is detachably connected to the hydraulic station.

[0018] It also includes a third hydraulic pipeline, one end of which is connected to the first outlet, and the other end of which is used to be connected to the servo cylinder.

[0019] The third hydraulic pipeline is detachably connected to the first outlet, and the third hydraulic pipeline is detachably connected to the servo cylinder.

[0020] It also includes a fourth hydraulic pipeline, one end of which is connected to the second outlet, and the other end of which is used to be connected to the servo cylinder.

[0021] The fourth hydraulic pipeline is detachably connected to the second outlet, and the fourth hydraulic pipeline is detachably connected to the servo cylinder.

[0022] The working principle and beneficial effects of the utility model are as follows: the integrated valve block has a first inlet, a first outlet, a second inlet and a second outlet, and the first inlet and the second inlet are both used to connect with the hydraulic station; the servo valve is arranged on the integrated valve block, the first inlet and the second inlet are both connected with the inlet end of the servo valve, one outlet end of the servo valve is connected with the first outlet, and the other outlet end of the servo valve is connected with the second outlet; pressure transmitters are arranged at the first outlet and the second outlet; the first outlet and the second outlet are respectively connected with one of the left and right chambers of the servo oil cylinder, and the movable end of the servo oil cylinder is connected with the adjusting cylinder; the pressure transmitter, the control system and the servo oil cylinder are electrically connected in sequence. The oil pressure generated by the hydraulic station is delivered to the servo valve through the first inlet and the second inlet. The oil pressure adjusted by the servo valve is delivered to the servo cylinder through the first outlet and the second outlet. The pressure transmitter is arranged on the integrated valve block after the servo valve. The oil pressure adjusted by the servo valve, that is, the pressure of the servo cylinder, is detected by the pressure transmitter. The oil pressure is delivered to the control system. The control system drives the adjusting cylinder to linearly shift by controlling the action of the servo cylinder, so that the linear displacement of the adjusting cylinder is converted into the rotation of the stator blade of the axial compressor, thereby adjusting the stator blade angle. The control system can detect the pressure of the hydraulic main pipe and accurately monitor the pressure change of the servo cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0024] Figure 1 It is a top view of the utility model.

[0025] Figure 2 This is a front view of the integrated valve block in the utility model connected with the transverse support plate, the base, and the longitudinal support plate.

[0026] Figure 3 This is a principle block diagram of the utility model.

[0027] In the figure: 1. adjusting cylinder, 2. integrated valve block, 3. servo valve, 4. pressure transmitter, 5. servo cylinder, 6. control system, 7. first inlet, 8. first outlet, 9. second inlet, 10. second outlet, 11. hydraulic station, 12. transverse support plate, 13. base, 14. longitudinal support plate, 15. first hydraulic pipeline, 16. second hydraulic pipeline, 17. third hydraulic pipeline, 18. fourth hydraulic pipeline. DETAILED DESCRIPTION

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0029] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0030] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0031] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0032] Example, see Figure 1 , Figure 2 and Figure 3 , is an embodiment of the utility model, and proposes an axial compressor stator blade adjustment control device, which is used to be connected to the adjustment cylinder 1 of the axial compressor, and the adjustment cylinder 1 is used to adjust the stator blade angle of the axial compressor, including an integrated valve block 2, a servo valve 3, a pressure transmitter 4, a servo oil cylinder 5, and a control system 6. The integrated valve block 2 has a first inlet 7, a first outlet 8, a second inlet 9, and a second outlet 10. The first inlet 7 and the second inlet 9 are both used to connect with the hydraulic station 11; the servo valve 3 is arranged on the integrated valve block 2, the first inlet 7 and the second inlet 9 are both connected to the inlet end of the servo valve 3, one outlet end of the servo valve 3 is connected to the first outlet 8, and the other outlet end of the servo valve 3 is connected to the second outlet 10; the pressure transmitter 4 is arranged at the first outlet 8 and the second outlet 10; the first outlet 8 and the second outlet 10 are respectively connected to one of the left and right chambers of the servo oil cylinder 5, and the movable end of the servo oil cylinder 5 is connected to the adjustment cylinder 1; the pressure transmitter 4, the control system 6 and the servo oil cylinder 5 are electrically connected in sequence.

[0033] Furthermore, if Figure 1 and Figure 2 As shown, it also includes a transverse support plate 12, a base 13, and a longitudinal support plate 14. The integrated valve block 2 is arranged on the transverse support plate 12; the base 13 is located below the transverse support plate 12; the longitudinal support plate 14 is connected between the transverse support plate 12 and the base 13, and the number of longitudinal support plates 14 is at least two, and all longitudinal support plates 14 are arranged in a straight line. The transverse support plate 12, the base 13 and the longitudinal support plate 14 cooperate to support and position the integrated valve block 2 and fix the integrated valve block 2 in the desired position. The left and right longitudinal support plates 14 are symmetrically arranged between the transverse support plate 12 and the base 13. On the premise of ensuring that the transverse support plate 12 and the base 13 are reliably connected, the number of longitudinal support plates 14 is reduced as much as possible to save costs.

[0034] Furthermore, if Figure 1 As shown, the first hydraulic pipeline 15 is also included, one end of which is connected to the first inlet 7, and the other end of which is used to be connected to the hydraulic station 11. According to the relative position and spacing between the integrated valve block 2 and the hydraulic station 11, a first hydraulic pipeline 15 of a suitable length is selected, and the first inlet 7 of the integrated valve block 2 is connected to the hydraulic station 11 by using the first hydraulic pipeline 15. Compared with directly connecting the first inlet 7 to the hydraulic station 11, the requirements for the placement of the integrated valve block 2 and the hydraulic station 11 can be reduced, and disassembly and assembly are simpler and more convenient.

[0035] Furthermore, the first hydraulic pipeline 15 is detachably connected to the first inlet 7 , and the first hydraulic pipeline 15 is detachably connected to the hydraulic station 11 , so that the first hydraulic pipeline 15 can be easily disassembled and maintained.

[0036] Furthermore, if Figure 1 As shown, the second hydraulic pipeline 16 is also included, one end of which is connected to the second inlet 9, and the other end of which is used to be connected to the hydraulic station 11. According to the relative position and spacing between the integrated valve block 2 and the hydraulic station 11, a second hydraulic pipeline 16 of a suitable length is selected, and the second inlet 9 of the integrated valve block 2 is connected to the hydraulic station 11 by the second hydraulic pipeline 16. Compared with directly connecting the second inlet 9 to the hydraulic station 11, the requirements for the placement of the integrated valve block 2 and the hydraulic station 11 can be reduced, and disassembly and assembly are simpler and more convenient.

[0037] Furthermore, the second hydraulic pipeline 16 is detachably connected to the second inlet 9 , and the second hydraulic pipeline 16 is detachably connected to the hydraulic station 11 , so that the second hydraulic pipeline 16 can be easily disassembled and maintained.

[0038] Furthermore, if Figure 1 As shown, the third hydraulic pipeline 17 is also included, one end of which is connected to the first outlet 8, and the other end of the third hydraulic pipeline 17 is used to be connected to the servo cylinder 5. According to the relative position and spacing between the integrated valve block 2 and the servo cylinder 5, the third hydraulic pipeline 17 of appropriate length is selected, and the first outlet 8 of the integrated valve block 2 is connected to the servo cylinder 5 by the third hydraulic pipeline 17. Compared with directly connecting the first outlet 8 to the servo cylinder 5, the requirements for the placement of the integrated valve block 2 and the servo cylinder 5 can be reduced, and disassembly and assembly are simpler and more convenient.

[0039] Furthermore, the third hydraulic pipeline 17 is detachably connected to the first outlet 8 , and the third hydraulic pipeline 17 is detachably connected to the servo cylinder 5 , so that the third hydraulic pipeline 17 can be easily disassembled and maintained.

[0040] Furthermore, if Figure 1 As shown, the fourth hydraulic pipeline 18 is also included, one end of which is connected to the second outlet 10, and the other end of which is used to be connected to the servo cylinder 5. According to the relative position and spacing between the integrated valve block 2 and the servo cylinder 5, a fourth hydraulic pipeline 18 of a suitable length is selected, and the second outlet 10 of the integrated valve block 2 is connected to the servo cylinder 5 by the fourth hydraulic pipeline 18. Compared with directly connecting the second outlet 10 to the servo cylinder 5, the requirements for the placement of the integrated valve block 2 and the servo cylinder 5 can be reduced, and disassembly and assembly are simpler and more convenient.

[0041] Furthermore, the fourth hydraulic pipeline 18 is detachably connected to the second outlet 10 , and the fourth hydraulic pipeline 18 is detachably connected to the servo cylinder 5 , so that the fourth hydraulic pipeline 18 can be easily disassembled and maintained.

[0042] In this embodiment, the integrated valve block 2 has a first inlet 7, a first outlet 8, a second inlet 9 and a second outlet 10. The first inlet 7 is connected to the hydraulic station 11 through a first hydraulic pipeline 15, the first outlet 8 is connected to the servo cylinder 5 through a third hydraulic pipeline 17, the second inlet 9 is connected to the hydraulic station 11 through a second hydraulic pipeline 16, and the second outlet 10 is connected to the servo cylinder 5 through a fourth hydraulic pipeline 18. The first inlet 7 and the second inlet 9 are both connected to the inlet end of the servo valve 3, one outlet end of the servo valve 3 is connected to the first outlet 8, and the other outlet end of the servo valve 3 is connected to the second outlet 10; pressure transmitters 4 are provided at the first outlet 8 and the second outlet 10; the first outlet 8 and the second outlet 10 are respectively connected to one of the left and right chambers of the servo cylinder 5, and the movable end of the servo cylinder 5 is connected to the regulating cylinder 1; the pressure transmitter 4 and the control system 6 are electrically connected to the servo cylinder 5 in sequence. The pressure transmitter 4 is detachably connected to the integrated valve block 2, which is convenient for maintenance and replacement.

[0043] The oil pressure generated by the hydraulic station 11 is delivered to the servo valve 3 through the first hydraulic pipeline 15, the first inlet 7, the second hydraulic pipeline 16 and the second inlet 9. The oil pressure adjusted by the servo valve 3 is delivered to the servo cylinder 5 through the first outlet 8, the third hydraulic pipeline 17, the second outlet 10 and the fourth hydraulic pipeline 18. The pressure transmitter 4 is arranged on the integrated valve block 2 after the servo valve 3. The oil pressure adjusted by the servo valve 3, that is, the pressure of the servo cylinder 5, is detected by the pressure transmitter 4. The oil pressure is delivered to the control system 6. The control system 6 drives the regulating cylinder 1 to undergo linear displacement by controlling the action of the servo cylinder 5, so that the linear displacement of the regulating cylinder 1 is converted into the rotation of the stator blades of the axial compressor, thereby adjusting the stator blade angle. The control system can detect the pressure of the hydraulic main pipe and accurately monitor the pressure change of the servo cylinder 5.

[0044] The pressure change of the servo oil cylinder 5 is made to participate in the equipment interlocking protection through the pressure transmitter 4. When the oil pressure is detected to be abnormal, the stationary blade opening can be adjusted to protect the compressor to the greatest extent and prevent major accidents. For example, when the pressure of the servo oil cylinder 5 fluctuates greatly or the pressure is zero, the axial compressor performs the stationary blade full opening action, which can prevent the axial compressor from surging and protect the axial compressor. When a fault occurs, the technician can quickly diagnose the fault location by analyzing the pressure before and after the servo valve 3, saving a lot of time for troubleshooting and greatly improving the equipment operation rate. For example, when the stationary blade does not act according to the instruction, the technician can quickly diagnose the fault by comparing the pressure of the pressure transmitter 4 with the pressure of the hydraulic station 11. If the pressure of the pressure transmitter 4 is normal and the pressure of the hydraulic station 11 is abnormal, it is judged that the hydraulic station 11 is faulty; if the pressure of the pressure transmitter 4 is abnormal and the pressure of the hydraulic station 11 is normal, it is judged that the servo valve 3 is faulty; if the pressure of the pressure transmitter 4 is normal and the pressure of the hydraulic station 11 is normal, it is judged that the adjustment cylinder 1 is faulty. Rapidly diagnosing the fault point according to the fault type and handling the fault in a targeted manner can restore production more efficiently.

[0045] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An axial flow compressor stator blade adjustment control device, used to be connected to an adjustment cylinder (1) of the axial flow compressor, the adjustment cylinder (1) being used to adjust the stator blade angle of the axial flow compressor, characterized in that: include, An integrated valve block (2), the integrated valve block (2) having a first inlet (7), a first outlet (8), a second inlet (9) and a second outlet (10), the first inlet (7) and the second inlet (9) both being used to connect to a hydraulic station (11); A servo valve (3), the servo valve (3) being arranged on the integrated valve block (2), the first inlet (7) and the second inlet (9) being connected to an inlet end of the servo valve (3), one outlet end of the servo valve (3) being connected to the first outlet (8), and the other outlet end of the servo valve (3) being connected to the second outlet (10); A pressure transmitter (4), wherein the pressure transmitter (4) is arranged at the first outlet (8) and the second outlet (10); A servo oil cylinder (5), wherein the first outlet (8) and the second outlet (10) are respectively connected to one of the left and right chambers of the servo oil cylinder (5), and the movable end of the servo oil cylinder (5) is connected to the regulating cylinder (1); The control system (6) is electrically connected to the pressure transmitter (4), the control system (6) and the servo cylinder (5) in sequence.

2. The axial flow compressor stator blade adjustment control device according to claim 1, characterized in that: Also includes, a transverse support plate (12), the integrated valve block (2) being arranged on the transverse support plate (12); A base (13), the base (13) being located below the transverse support plate (12); A longitudinal support plate (14), wherein the longitudinal support plate (14) is connected between the transverse support plate (12) and the base (13), the number of the longitudinal support plates (14) is at least two, and all the longitudinal support plates (14) are arranged in a straight line.

3. The axial flow compressor stator blade adjustment control device according to claim 1, characterized in that: It also comprises a first hydraulic pipeline (15), one end of which is connected to the first inlet (7), and the other end of which is used to be connected to the hydraulic station (11).

4. The axial flow compressor stator blade adjustment control device according to claim 3, characterized in that: The first hydraulic pipeline (15) and the first inlet (7) are detachably connected, and the first hydraulic pipeline (15) and the hydraulic station (11) are also detachably connected.

5. The axial flow compressor stator blade adjustment control device according to claim 1, characterized in that: It also includes a second hydraulic pipeline (16), one end of the second hydraulic pipeline (16) is connected to the second inlet (9), and the other end of the second hydraulic pipeline (16) is used to be connected to the hydraulic station (11).

6. The axial flow compressor stator blade adjustment control device according to claim 5, characterized in that: The second hydraulic pipeline (16) is detachably connected to the second inlet (9), and the second hydraulic pipeline (16) is also detachably connected to the hydraulic station (11).

7. The axial flow compressor stator blade adjustment control device according to claim 1, characterized in that: It also comprises a third hydraulic pipeline (17), one end of the third hydraulic pipeline (17) being connected to the first outlet (8), and the other end of the third hydraulic pipeline (17) being used to be connected to the servo cylinder (5).

8. The axial flow compressor stator blade adjustment control device according to claim 7, characterized in that: The third hydraulic pipeline (17) and the first outlet (8) are detachably connected, and the third hydraulic pipeline (17) and the servo cylinder (5) are also detachably connected.

9. The axial flow compressor stator blade adjustment control device according to claim 1, characterized in that: It also comprises a fourth hydraulic pipeline (18), one end of the fourth hydraulic pipeline (18) being connected to the second outlet (10), and the other end of the fourth hydraulic pipeline (18) being used to be connected to the servo cylinder (5).

10. The axial flow compressor stator blade adjustment control device according to claim 9, characterized in that: The fourth hydraulic pipeline (18) and the second outlet (10) are detachably connected, and the fourth hydraulic pipeline (18) and the servo cylinder (5) are also detachably connected.

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