Fixing equipment for measuring steam turbine partition plate

Abstract

The utility model discloses a fixing device for measuring a steam turbine partition plate. The fixing device comprises a supporting mechanism and a servo motor installed on one side of the supporting mechanism. Guide mechanisms are arranged on the two sides of the supporting mechanism, and the bottoms of the guide mechanisms are fixedly connected to the top ends of the connecting blocks. The supporting mechanism comprises a base, a buffer groove is formed in the top of the base, and supporting plates are symmetrically and fixedly connected to the left side and the right side of the interior of the buffer groove; one side of the supporting plate is fixedly connected with the servo motor, the supporting mechanism is arranged to simulate the state of a steam turbine unit during operation, the suspension pin is adopted for supporting, the possibility of deformation of the partition plate body is reduced, meanwhile, the device can adjust the supporting block, and therefore the measurement requirements of partition plate bodies of different sizes are met. Impact load caused by the falling moment of the partition plate body can be reduced by arranging the guide mechanism, and the accuracy of partition plate measurement is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine diaphragm measuring equipment, and specifically relates to a fixing device for measuring steam turbine diaphragms. Background Technique

[0002] The steam turbine flow passage clearance is one of the key parameters in a steam turbine, because it directly affects the thermal efficiency and power output of the steam turbine. The size of the flow passage clearance is related to the relative position between the rotor and the diaphragm, and is also affected by factors such as thermal expansion, thermal deformation, and mechanical displacement. Therefore, the accuracy and timeliness of measuring the steam turbine flow passage clearance are very important for the safe, reliable, and efficient operation of the steam turbine.

[0003] Publication No. CN108927745A discloses a detection support platform for marine steam turbine diaphragms. By adjusting the motor, a suitable support position is obtained to meet the detection support requirements of series components with different sizes. According to the support reference and support form of each component in the assembled state of the steam turbine, the support structure of the support platform is designed to solve the problems that the support method of the components during the detection process is not unified with the support method reference in the assembled state, and the deformation conditions are inconsistent. According to the detection requirements, the part to be detected is exposed to the greatest extent, which is convenient for the measurement work. However, the following problems still exist in the actual use of this patent:

[0004] Although this detection support platform for marine steam turbine diaphragms obtains a suitable support position through an adjusting motor to meet the detection support requirements of series components with different sizes, it is not convenient for placing the diaphragm, and it is easy for the diaphragm to tip over during detection.

[0005] A fixing device for measuring steam turbine diaphragms is proposed to solve the problems raised above. Content of the Utility Model

[0006] The purpose of the utility model is to provide a fixing device for measuring steam turbine diaphragms to solve the problems raised in the above background technique, that is, currently, a suitable support position is obtained through an adjusting motor to meet the detection support requirements of series components with different sizes, but it is not convenient for placing the diaphragm, and it is easy for the diaphragm to tip over during detection.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A fixing device for measuring steam turbine diaphragms includes a support mechanism and a servo motor installed on one side of the support mechanism;

[0008] Guide mechanisms are arranged on both sides of the support mechanism, and the bottom of the guide mechanism is fixedly connected to the top of the connection block;

[0009] It further includes:

[0010] The support mechanism includes a base, a buffer groove is formed at the top of the base, and support plates are symmetrically and fixedly connected to the left and right sides inside the buffer groove;

[0011] Among them, one side of the support plate is fixedly connected to the servo motor, the output end of the servo motor penetrates through the support plate and is fixedly connected to a bidirectional threaded rod, and the end of the bidirectional threaded rod away from the servo motor is rotatably connected to the support plate;

[0012] Among them, first threaded sleeves are symmetrically and threadedly connected to the outer sides of both ends of the bidirectional threaded rod, and sliding sleeves are fixedly connected to the bottom ends of the two first threaded sleeves.

[0013] Preferably, a guide rod is slidably connected inside the sliding sleeve, both the left and right ends of the guide rod are fixedly connected to the support plate, and a connecting block is fixedly connected to the top end of the first threaded sleeve.

[0014] Preferably, the bottom end of the connecting block is slidably connected to the buffer groove, and a bracket is fixedly connected to the central position of the top end of the connecting block.

[0015] Preferably, a hydraulic cylinder is fixedly connected to the top end inside the bracket, the output end of the hydraulic cylinder penetrates through the bracket and is fixedly connected to a support block, and the top end of the support block is in fitting connection with the partition body.

[0016] Preferably, the guiding mechanism includes a driving frame, the bottom end of the driving frame is fixedly connected to the connecting block, and a worm is rotatably connected to one side inside the driving frame.

[0017] Preferably, the bottom end of the worm is rotatably connected to the driving frame, the top end of the worm penetrates through the driving frame and is fixedly connected to a handle, and a worm gear is meshed and connected to one side of the worm.

[0018] Preferably, a lead screw is fixedly connected to the central position inside the worm gear, both the left and right ends of the lead screw are rotatably connected to the driving frame, a second threaded sleeve is threadedly connected to the outer side of one end of the lead screw, a guiding strip is fixedly connected to one side of the second threaded sleeve, and one end of the guiding strip penetrates through the driving frame and is in fitting connection with the partition body.

[0019] Compared with the prior art, the beneficial effects of the present utility model are as follows: This fixed device for measuring steam turbine partitions simulates the operating state of the steam turbine unit by setting the support mechanism, uses a suspension pin for support, reduces the possibility of deformation of the partition body, and at the same time, this device can adjust the support block to meet the measurement requirements of partition bodies of different sizes. By setting the guiding mechanism, the impact load caused by the instantaneous fall of the partition body can be reduced, and the accuracy of partition measurement is greatly improved. The specific content is as follows:

[0020] 1. By setting up a support mechanism, the state during the operation of the steam turbine unit is simulated. The suspension pins are used for support to reduce the possibility of deformation of the partition body. At the same time, the device can adjust the support blocks to meet the measurement requirements of partition bodies of different sizes. The servo motor drives the rotation of the bidirectional threaded rod. Utilizing the threaded action between the bidirectional threaded rod and the first threaded sleeve, the sliding sleeve has a tendency to rotate. By using the limiting effect of the guide rod on the sliding sleeve, the connecting block is driven to move left and right in the horizontal direction of the guide rod, and thus the partition bodies of different sizes can be supported.

[0021] 2. By setting up a guiding mechanism, the impact load caused by the instantaneous fall of the partition body can be reduced, and the accuracy of partition measurement can be greatly improved. The handle drives the rotation of the worm. Utilizing the meshing action between the worm and the worm wheel, the lead screw is driven to rotate. By using the threaded action between the lead screw and the second threaded sleeve, the guiding strip can be driven to move left and right in the horizontal direction, and thus the partition bodies of different thicknesses can be limited, thereby reducing the impact load caused by the instantaneous fall of the partition body. Brief Description of the Drawings

[0022] Figure 1 is a schematic diagram of the front cross-sectional structure of the present utility model;

[0023] Figure 2 is a schematic diagram of the side cross-sectional structure of the present utility model;

[0024] Figure 3 is the Figure 1 magnified structure schematic diagram at position A in the present utility model;

[0025] Figure 4 is the Figure 1 magnified structure schematic diagram at position B in the present utility model;

[0026] Figure 5 is the Figure 2 magnified structure schematic diagram inside the driving frame in the present utility model.

[0027] In the figure: 1, support mechanism; 101, base; 102, buffer groove; 103, support plate; 104, servo motor; 105, bidirectional threaded rod; 106, first threaded sleeve; 107, sliding sleeve; 108, guide rod; 109, connecting block; 110, bracket; 111, hydraulic cylinder; 112, support block; 113, partition body; 2, guiding mechanism; 201, driving frame; 202, worm; 203, handle; 204, worm wheel; 205, lead screw; 206, second threaded sleeve; 207, guiding strip. Detailed Embodiment

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figures 1-5 , the present utility model provides a technical solution: a fixing device for measuring a steam turbine diaphragm, including a support mechanism 1 and a servo motor 104 installed on one side of the support mechanism 1; guiding mechanisms 2 are arranged on both sides of the support mechanism 1, and the bottom of the guiding mechanism 2 is fixedly connected to the top end of the connecting block 109; the support mechanism 1 includes a base 101, a buffer groove 102 is opened at the top of the base 101, and support plates 103 are symmetrically and fixedly connected to the left and right sides inside the buffer groove 102. By providing the buffer groove 102, the impact when the diaphragm body 113 drops can be reduced.

[0030] One side of the support plate 103 is fixedly connected to the servo motor 104, and the output end of the servo motor 104 penetrates through the support plate 103 and is fixedly connected to a bidirectional threaded rod 105. The end of the bidirectional threaded rod 105 away from the servo motor 104 is rotatably connected to the support plate 103. The bidirectional threaded rod 105 is driven to rotate by the servo motor 104.

[0031] First thread sleeves 106 are symmetrically and threadedly connected to the outer sides of both ends of the bidirectional threaded rod 105. The bottom ends of the two first thread sleeves 106 are fixedly connected to sliding sleeves 107. A guide rod 108 is slidably connected inside the sliding sleeve 107. The left and right ends of the guide rod 108 are fixedly connected to the support plate 103. The top end of the first thread sleeve 106 is fixedly connected to a connecting block 109. By using the threaded action between the bidirectional threaded rod 105 and the first thread sleeve 106, the sliding sleeve 107 has a tendency to rotate. By using the limiting action of the guide rod 108 on the sliding sleeve 107, the connecting block 109 and the support block 112 are driven to move left and right in the horizontal direction of the guide rod.

[0032] The bottom end of the connecting block 109 is slidably connected to the buffer groove 102. The center position of the top end of the connecting block 109 is fixedly connected to a support 110. By contacting the connecting block 109 with the buffer groove 102, the force on the bidirectional threaded rod 105 can be reduced, thereby improving its service life.

[0033] A hydraulic cylinder 111 is fixedly connected to the top end inside the support 110. The output end of the hydraulic cylinder 111 penetrates through the support 110 and is fixedly connected to a support block 112. The top end of the support block 112 is in fit connection with a diaphragm body 113. By driving the support block 112 to move up and down by the hydraulic cylinder 111, the diaphragm body 113 at different heights can be supported.

[0034] The guiding mechanism 2 includes a driving frame 201. The bottom end of the driving frame 201 is fixedly connected to the connecting block 109. One side inside the driving frame 201 is rotatably connected to a worm 202. The bottom end of the worm 202 is rotatably connected to the driving frame 201. The top end of the worm 202 penetrates through the driving frame 201 and is fixedly connected to a handle 203. One side of the worm 202 is meshed with a worm wheel 204. By driving the worm 202 to rotate through the handle 203, the meshing action between the worm 202 and the worm wheel 204 is utilized to drive the lead screw 205 to rotate;

[0035] A lead screw 205 is fixedly connected to the central position inside the worm wheel 204. The left and right ends of the lead screw 205 are both rotatably connected to the driving frame 201. A second thread sleeve 206 is threadedly connected to the outside of one end of the lead screw 205. One side of the second thread sleeve 206 is fixedly connected to a guiding strip 207. One end of the guiding strip 207 penetrates through the driving frame 201 and is in fit connection with the partition body 113. By the limitation of the driving frame 201 on the guiding strip 207, the left and right movement of the guiding strip 207 can be realized.

[0036] Working principle: Before using this fixing device for measuring a steam turbine partition, it is necessary to first check the overall condition of the device to ensure that it can work properly. According to Figure 1 - Figure 5 As shown, first determine the diameter of the partition body 113, adjust the distance between the two support blocks 112, start the servo motor 104 to drive the bidirectional threaded rod 105 to rotate. By the threaded action between the bidirectional threaded rod 105 and the first thread sleeve 106, the sliding sleeve 107 has a tendency to rotate. By the limiting action of the guide rod 108 on the sliding sleeve 107, the connecting block 109 and the support block 112 are driven to move left and right in the horizontal direction of the guide rod, so as to support the partition body 113 of different sizes. Then, according to the height of the partition body 113, adjust the elevation of the support block 112, start the hydraulic cylinder 111 to drive the support block 112 to move up and down. Secondly, according to the thickness of the partition body 113, adjust the position of the guiding block. By driving the worm 202 to rotate through the handle 203, the meshing action between the worm 202 and the worm wheel 204 is utilized to drive the lead screw 205 to rotate. By the threaded action between the lead screw 205 and the second thread sleeve 206, the guiding strip 207 can be driven to move left and right in the horizontal direction, so as to limit the partition body 113 of different thicknesses, thereby reducing the impact load caused by the instantaneous fall of the partition body 113;

[0037] Secondly, hoist the partition body 113 above the device, slowly lower the hook, then the overhead crane releases the hook, remove the steel wire rope, conduct the measurement. After the measurement is completed, hang the steel wire rope, and adjust the guiding strip 207 outwards by fifty millimeters. Finally, the overhead crane lifts away the partition body 113, and the measurement of the partition body 113 can be completed.

[0038] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A fixing device for measuring a steam turbine diaphragm, comprising a support mechanism (1) and a servo motor (104) installed on one side of the support mechanism (1); Guide mechanisms (2) are arranged on both sides of the support mechanism (1), and the bottom of the guide mechanism (2) is fixedly connected to the top of the connection block (109); It is characterized in that It further includes: The support mechanism (1) includes a base (101). A buffer groove (102) is formed at the top of the base (101), and support plates (103) are symmetrically and fixedly connected to the left and right sides inside the buffer groove (102); Wherein, one side of the support plate (103) is fixedly connected to the servo motor (104). The output end of the servo motor (104) penetrates through the support plate (103) and is fixedly connected to a bidirectional threaded rod (105). The end of the bidirectional threaded rod (105) away from the servo motor (104) is rotatably connected to the support plate (103); Wherein, first threaded sleeves (106) are symmetrically threaded on the outer sides of both ends of the bidirectional threaded rod (105), and sliding sleeves (107) are fixedly connected to the bottoms of the two first threaded sleeves (106).

2. The fixing device for measuring a steam turbine diaphragm according to claim 1, characterized in that: A guide rod (108) is slidably connected inside the sliding sleeve (107). Both the left and right ends of the guide rod (108) are fixedly connected to the support plate (103), and a connection block (109) is fixedly connected to the top of the first threaded sleeve (106).

3. The fixing device for measuring a steam turbine diaphragm according to claim 2, characterized in that: The bottom end of the connection block (109) is slidably connected to the buffer groove (102), and a bracket (110) is fixedly connected to the central position of the top end of the connection block (109).

4. The fixing device for measuring a steam turbine diaphragm according to claim 3, characterized in that: A hydraulic cylinder (111) is fixedly connected to the top end inside the bracket (110). The output end of the hydraulic cylinder (111) penetrates through the bracket (110) and is fixedly connected to a support block (112). The top end of the support block (112) is in fitting connection with a diaphragm body (113).

5. The fixing device for measuring a steam turbine diaphragm according to claim 1, characterized in that: The guide mechanism (2) includes a driving frame (201). The bottom end of the driving frame (201) is fixedly connected to the connection block (109), and a worm (202) is rotatably connected to one side inside the driving frame (201).

6. The fixing device for measuring a steam turbine diaphragm according to claim 5, characterized in that: The bottom end of the worm (202) is rotatably connected to the driving frame (201). The top end of the worm (202) penetrates through the driving frame (201) and is fixedly connected to a handle (203). A worm gear (204) is meshed and connected to one side of the worm (202).

7. The fixing device for measuring a steam turbine diaphragm according to claim 6, characterized in that: A lead screw (205) is fixedly connected to the central position inside the worm gear (204). Both the left and right ends of the lead screw (205) are rotatably connected to the driving frame (201). A second threaded sleeve (206) is threaded on the outer side of one end of the lead screw (205), and a guide bar (207) is fixedly connected to one side of the second threaded sleeve (206). One end of the guide bar (207) penetrates through the driving frame (201) and is in fitting connection with the diaphragm body (113).

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