Impeller dynamic and static balance testing device for well submersible pump and working method of impeller dynamic and static balance testing device

Abstract

The invention relates to the technical field of impeller testing, in particular to an impeller dynamic and static balance testing device for a submersible pump for a well and a working method of the impeller dynamic and static balance testing device for the submersible pump for the well, and the impeller dynamic and static balance testing device comprises a testing platform main body, a clamping assembly, a balance testing assembly and a counterweight assembly, balance test assemblies are installed on the two sides of the test platform body, and a counterweight assembly is installed above the test platform body. The clamping assembly comprises a T-shaped sliding groove, a first motor, a first gear, a moving plate, a sliding block, a rack, a rotating sleeve, a spring, a moving rod, a threaded head, a threaded cover and a clamping disc. According to the impeller clamping device, the clamping assembly is adopted, impellers of different models can be automatically clamped, so that the impeller clamping device is suitable for the impellers of different models, the clamping cost is reduced, and the impeller clamping effect is improved; the balance testing assembly is adopted, dynamic and static balance testing can be automatically carried out on the impeller, manual assistance is reduced, the testing burden is reduced, and the testing effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of impeller testing, and in particular to an impeller dynamic and static balance testing device for a well submersible pump and a working method thereof. Background Art

[0002] The submersible well pump is an important equipment for extracting water from deep wells. When in use, the entire unit submerges in the water to extract groundwater to the surface. After the impeller of the submersible well pump is produced, a dynamic and static balance test device is required to perform a dynamic and static balance test on the impeller. However, the existing impeller dynamic and static balance test device generally cannot automatically clamp the impeller, and cannot be adjusted according to the impeller model. It is not easy to clamp impellers of different models, which increases the clamping cost and reduces the clamping effect of the impeller. Moreover, it is generally not easy to perform a dynamic and static balance test on the impeller, and manual assistance is required, which increases the test burden and reduces the test effect. Moreover, it is generally impossible to fine-tune the impeller counterweight, and manual fine-tune the impeller counterweight is required, which increases the manual burden and reduces the adjustment effect of the impeller. Summary of the Invention

[0003] The problem solved by the present invention is to provide an impeller dynamic and static balance testing device for a well submersible pump and a working method thereof, which can automatically clamp impellers of different models, thereby adapting to impellers of different models, reducing the clamping cost, and improving the clamping effect of the impeller. It can also automatically perform dynamic and static balance tests on the impeller, reducing manual assistance, reducing the test burden, and improving the test effect. It can also automatically fine-tune the impeller counterweight, eliminating the need for manual fine-tuning of the impeller counterweight, reducing the manual burden, and improving the adjustment effect of the impeller.

[0004] To achieve the above-mentioned object, the present invention adopts the following technical solution: a device for testing the dynamic and static balance of an impeller of a submersible pump for a well, comprising a test platform body, a clamping assembly, a balance test assembly, and a counterweight assembly, wherein the clamping assembly is installed at the top of the test platform body, the balance test assemblies are installed on both sides of the test platform body, and the counterweight assembly is installed above the test platform body; The clamping assembly includes a T-shaped slide, a first motor, a first gear, a movable plate, a slider, a rack, a rotating sleeve, a spring, a movable rod, a threaded head, a threaded cover and a clamping disk. The movable plate is symmetrically installed on the top outer wall of the test platform body, and the slider is fixedly connected to the bottom outer wall of the movable plate. The top of the test platform body is symmetrically provided with a T-shaped slide corresponding to the position of the slider. A rack is fixed on the outer wall of one side of the movable plate, and the first gear is meshed and installed between the racks. The first motor is embedded in the top of the test platform body, and the top of the output shaft of the first motor is fixed to the outer wall of the first gear. A rotating sleeve is rotatably connected to the outer wall of one side of the movable plate.

[0005] Preferably, a moving rod is sleeved inside the rotating sleeve, one end of the moving rod is fixedly connected to a spring, and the other end of the spring is fixedly connected to the inner wall of the rotating sleeve, the other end of the moving rod is fixedly connected to a threaded head, one end of the threaded head is threadedly connected to a threaded cover, and the outer side of the threaded cover is fixedly connected to a clamping disk.

[0006] Preferably, the balance test assembly includes a second gear, a second motor, a limiting shaft, a cylinder, a pulley, a third gear, a limiting hole and an annular groove, the outer side of the rotating sleeve is fixedly connected to the second gear, the third gear is meshed and installed on the outer wall of the bottom end of the second gear, a limiting hole is provided in the middle of the third gear, the limiting shaft is sleeved in the limiting hole, the second motor is embedded in one side of the movable plate, and one end of the output shaft of the second motor is fixed to the outer wall of the limiting shaft, an annular groove is provided on one side of the third gear, the pulley is symmetrically slidably connected in the annular groove, the cylinder is symmetrically embedded in the movable plate, and one end of the telescopic rod of the cylinder is rotatably connected to the outer wall of the pulley.

[0007] Preferably, the counterweight assembly includes a support plate, a placement arc plate, a support rod, a connecting frame, a fourth gear, a toothed belt, a conveyor belt, a limit port, a magnetic counterweight block and a connecting plate. The support plate is fixedly connected to the outer wall of one side of the movable plate, the placement arc plate is fixedly connected to the top outer wall of the support plate, the outer walls of both sides of the support plate are fixedly connected to the support rod, the top outer wall of the support rod is fixedly connected to the connecting frame, the fourth gear is distributed and rotatably connected on the connecting frame, a toothed belt is meshed and installed between the fourth gears, a conveyor belt is fixedly connected between the toothed belts, a connecting plate is fixedly connected to the outer wall of one side of the toothed belt, and one side of the telescopic rod of the cylinder is fixedly connected to the outer wall of the connecting plate.

[0008] Preferably, the conveyor belt is provided with limit openings, and magnetic counterweights are placed and connected in the limit openings.

[0009] Preferably, a support frame is symmetrically fixedly connected to the outer wall of the top end of the test platform body, and a dynamic balance detection probe is embedded and installed on the top end of the support frame.

[0010] Preferably, a connecting rod is fixedly connected to an outer wall of one side of the third gear, and a marking strip is fixedly connected to an outer wall of one end of the connecting rod.

[0011] Preferably, the limiting shaft is in a cross shape, the limiting hole is in a cross shape, and the outer side of the limiting shaft is limit-connected to the inner wall of the limiting hole.

[0012] Preferably, the number of the fourth gears is eight, and the fourth gears are distributed in a rectangular shape.

[0013] Preferably, a working method of a dynamic and static balance test device for an impeller of a submersible pump for a well is provided, firstly, the impeller of the submersible pump for the well is placed above the main body of the test platform, then, according to the inner diameter of the center hole of the impeller, a clamping disk of a specified model is taken out, then the threaded cover is screwed onto the threaded head, then the first motor is started to rotate the first gear, and then, under the action of the rack, the sliders on the movable plate are moved closer to each other along the T-shaped slide groove, so that the clamping disk on the threaded cover clamps the impeller of the submersible pump for the well, and when the impeller of the submersible pump for the well is clamped, the movable rod is moved along the rotating sleeve, and the spring is compressed, so that the clamping range can be increased, and impellers of different models can be clamped and fixed, and when the balance test is completed, the first motor is started to rotate the first gear, and then, under the action of the rack, the sliders on the movable plate are moved closer to each other along the T-shaped slide groove, so that the clamping disk on the threaded cover clamps the impeller of the submersible pump for the well, and when the impeller of the submersible pump for the well is clamped, the movable rod is moved along the rotating sleeve, and the spring is compressed, so that the clamping range can be increased, and impellers of different models can be clamped and fixed. A motor reverses the first gear, and then, under the action of the rack, the slider on the movable plate is reset along the T-shaped slot, so that the clamping disk on the threaded cover is separated from the impeller, and then, under the action of the spring, the movable rod is reset along the rotating sleeve. When a static balance test is required, the impeller is first clamped, and then the cylinder is started to move the pulley, and then, under the action of the annular slot, the limiting hole on the third gear is moved along the limiting shaft, so that the third gear is meshed with the second gear. At this time, the second motor is started to rotate the limiting shaft slowly, and under the action of the limiting hole, the rotating sleeve on the third gear is rotated to a specified angle. At this time, the cylinder is started to make the pulley continue to move, and then, under the action of the annular slot, the third gear is meshed with the second gear. The gears are staggered. If the impeller's own gravity is unevenly distributed, the impeller drives the rotating sleeve to rotate, so that the center of gravity of the impeller rotates to just below the rotating sleeve, and then the cylinder is started to make the connecting plate move over a large range, and then the toothed belt drives the fourth gear to move, so that the fourth gear rotates along the connecting frame on the support rod, thereby driving the conveyor belt to move along the placement arc plate on the support plate, so that the magnetic counterweight block in the limit mouth is separated from the placement arc plate, and then falls onto the impeller. Under the magnetic effect of the magnetic counterweight block, the magnetic counterweight block is adsorbed to the top of the impeller, thereby adjusting the weight of the impeller. During adjustment, the third gear is moved over a large range, so that the marking strip on the connecting rod can mark the starting position of the impeller. Remember, and then repeat the above operation four to five times to keep the impeller balanced at different angles, and then add oil mud of specified weight to the impeller with the magnetic counterweight to keep the impeller balanced. When it is necessary to test the dynamic balance, start the cylinder to move the pulley, and then under the action of the annular groove, move the limit hole on the third gear along the limit shaft to make the third gear engage with the second gear. At this time, start the second motor to make the limit shaft rotate rapidly. Under the action of the limit hole, the impeller is driven to rotate rapidly by the rotating sleeve on the third gear, and then the rapidly rotating impeller is detected by the dynamic balance detection probe on the support frame, and the detected imbalance and weight position are transmitted to the computer for display, and then the impeller is corrected.

[0014] The beneficial effects of the present invention are: the clamping assembly is used to automatically clamp impellers of different models, thereby adapting to impellers of different models, reducing clamping costs, and improving the clamping effect of the impeller; The use of balance test components can automatically perform dynamic and static balance tests on the impeller, reducing manual assistance, reducing the test burden and improving the test effect; The use of a counterweight component can automatically fine-tune the impeller's counterweight, eliminating the need for manual fine-tuning of the impeller's counterweight, reducing the labor burden and improving the impeller's adjustment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is the overall three-dimensional structural diagram of the present invention; Figure 2 For the present invention Figure 1 A magnified view of the structure of area A in the middle; Figure 3 This is a front view cutaway structural diagram of the present invention; Figure 4 For the present invention Figure 3 Partial cross-sectional structural diagram in; Figure 5 It is a top view cutaway structural diagram of the present invention; Figure 6 It is a side cutaway structural diagram of the present invention; Figure 7 A three-dimensional structural diagram of the balance test assembly and the counterweight assembly of the present invention; Figure 8 A three-dimensional structural diagram of a balance test assembly according to the present invention; Figure 9 is a three-dimensional structural diagram of the counterweight assembly of the present invention; Figure 10 It is a cutaway three-dimensional structural diagram of the counterweight assembly of the present invention.

[0016] Legend: 1. Test platform body; 2. Clamping assembly; 3. Balance test assembly; 4. Counterweight assembly; 5. Support frame; 6. Dynamic balance detection probe; 7. Connecting rod; 8. Marking strip; 201. T-shaped slide; 202. First motor; 203. First gear; 204. Moving plate; 205. Slider; 206. Rack; 207. Rotating sleeve; 208. Spring; 209. Moving rod; 2010. Threaded head; 2011. Threaded cover; 2012 , clamping plate; 301, second gear; 302, second motor; 303, limiting shaft; 304, cylinder; 305, pulley; 306, third gear; 307, limiting hole; 308, annular slide; 401, support plate; 402, arc plate placement; 403, support rod; 404, connecting frame; 405, fourth gear; 406, toothed belt; 407, conveyor belt; 408, limiting port; 409, magnetic counterweight; 4010, connecting plate. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention. Example 1

[0018] See also Figures 1 to 5 , a dynamic and static balance test device for an impeller of a well submersible pump and a working method thereof, comprising a test platform body 1, a clamping assembly 2, a balance test assembly 3 and a counterweight assembly 4, the top of the test platform body 1 is equipped with a clamping assembly 2, the two sides of the test platform body 1 are equipped with balance test assemblies 3, and the top of the test platform body 1 is equipped with a counterweight assembly 4; a support frame 5 is symmetrically fixedly connected to the outer wall of the top of the test platform body 1, and a dynamic balance detection probe 6 is embedded and installed on the top of the support frame 5. The fast-rotating impeller is detected by the dynamic balance detection probe 6 on the support frame 5, and the detected imbalance and eccentricity are transmitted to the computer for display, and then the impeller is corrected; a connecting rod 7 is fixedly connected to the outer wall of one side of the third gear 306, and a marking strip 8 is fixedly connected to the outer wall of one end of the connecting rod 7. When adjusting, the third gear 306 is moved over a large range, so that the marking strip 8 on the connecting rod 7 can mark the starting position of the impeller, and the center of gravity of the impeller can be found more quickly by marking; The clamping assembly 2 includes a T-shaped slot 201, a first motor 202, a first gear 203, a movable plate 204, a slider 205, a rack 206, a rotating sleeve 207, a spring 208, a movable rod 209, a threaded head 2010, a threaded cover 2011 and a clamping disk 2012. The movable plate 204 is symmetrically installed on the top outer wall of the test platform body 1, and the slider 205 is fixedly connected to the bottom outer wall of the movable plate 204. A T-shaped slot 201 is symmetrically provided at the top of the test platform body 1 corresponding to the position of the slider 205. A rack 206 is fixedly connected to the outer wall of one side of the movable plate 204. The first gear 203 is meshed and installed between the racks 206. The first motor 202 is inlaid on the top of the test platform body 1, and the top of the output shaft of the first motor 202 is fixed. A rotating sleeve 207 is rotatably connected to the outer wall of the first gear 203 and one side outer wall of the movable plate 204; a movable rod 209 is sleeved inside the rotating sleeve 207, one end of the movable rod 209 is fixedly connected to a spring 208, and the other end of the spring 208 is fixedly connected to the inner wall of the rotating sleeve 207, the other end of the movable rod 209 is fixedly connected to a threaded head 2010, one end of the threaded head 2010 is threadedly connected to a threaded cover 2011, and a clamping disk 2012 is fixedly connected to the outside of the threaded cover 2011. According to the inner diameter of the center hole of the impeller, the clamping disk 2012 of the specified model is taken out, and then the threaded cover 2011 is screwed onto the threaded head 2010, so that the clamping disk 2012 on the threaded cover 2011 can clamp the impeller of the well submersible pump.

[0019] Working principle: first, place the impeller of the well submersible pump on the top of the test platform body 1, then take out the clamping disc 2012 of the specified model according to the inner diameter of the center hole of the impeller, then screw the threaded cover 2011 onto the threaded head 2010, then start the first motor 202 to rotate the first gear 203, and then under the action of the rack 206, make the slider 205 on the moving plate 204 approach each other along the T-shaped slide 201, so that the clamping disc 2012 on the threaded cover 2011 clamps the impeller of the well submersible pump, and when the impeller of the well submersible pump is clamped, the moving rod 209 moves along the rotating sleeve 207, and The spring 208 is compressed to increase the clamping range and clamp and fix impellers of different models. After the balancing test is completed, the first motor 202 is started to reverse the first gear 203, and then under the action of the rack 206, the slider 205 on the movable plate 204 is reset along the T-shaped slide groove 201, so that the clamping disk 2012 on the threaded cover 2011 is separated from the impeller, and then under the action of the spring 208, the movable rod 209 is reset along the rotating sleeve 207, which can automatically clamp impellers of different models, thereby adapting to impellers of different models, reducing the clamping cost, and improving the clamping effect of the impeller. Example 2

[0020] See also Figures 2 to 8 The balance test assembly 3 includes a second gear 301, a second motor 302, a limiting shaft 303, a cylinder 304, a pulley 305, a third gear 306, a limiting hole 307 and an annular groove 308. The second gear 301 is fixedly connected to the outer side of the rotating sleeve 207. The third gear 306 is meshed and installed on the outer wall of the bottom end of the second gear 301. A limiting hole 307 is provided in the middle of the third gear 306. The limiting shaft 303 is sleeved in the limiting hole 307. The second motor 302 is embedded on one side of the movable plate 204, and one end of the output shaft of the second motor 302 is fixed to the outer wall of the limiting shaft 303. An annular groove 308 is provided on one side of the third gear 306, and a pulley 305 is symmetrically slidably connected in the annular groove 308. A cylinder 304 is symmetrically inlaid and installed on the movable plate 204, and one end of the telescopic rod of the cylinder 304 is rotatably connected to the outer wall of the pulley 305; the shape of the limiting shaft 303 is cross-shaped, and the shape of the limiting hole 307 is cross-shaped, and the outer side of the limiting shaft 303 is limitedly connected to the inner wall of the limiting hole 307. Starting the second motor 302 makes the limiting shaft 303 rotate slowly. Under the action of the limiting hole 307, it is convenient to make the rotating sleeve 207 on the third gear 306 rotate to a specified angle.

[0021] When a static balance test is required, the impeller is first clamped, and then the cylinder 304 is started to move the pulley 305. Then, under the action of the annular groove 308, the limiting hole 307 on the third gear 306 moves along the limiting shaft 303, so that the third gear 306 is meshed with the second gear 301. At this time, the second motor 302 is started to make the limiting shaft 303 rotate slowly. Under the action of the limiting hole 307, the rotating sleeve 207 on the third gear 306 is rotated to a specified angle. At this time, the cylinder 304 is started to make the pulley 305 continue to move. Then, under the action of the annular groove 308, the third gear 306 is staggered with the second gear 301. If the impeller's own gravity is unevenly distributed, the rotating sleeve 207 is driven by the impeller to rotate, so that the center of gravity of the impeller rotates to just below the rotating sleeve 207, and then After that, the impeller is counterweighted. When dynamic balance test is required, the cylinder 304 is started to move the pulley 305. Then, under the action of the annular groove 308, the limiting hole 307 on the third gear 306 is moved along the limiting shaft 303, so that the third gear 306 is meshed with the second gear 301. At this time, the second motor 302 is started to make the limiting shaft 303 rotate rapidly. Under the action of the limiting hole 307, the impeller is driven to rotate rapidly through the rotating sleeve 207 on the third gear 306. Then, the fast-rotating impeller is detected by the dynamic balance detection probe 6 on the support frame 5, and the detected imbalance and eccentric weight position are transmitted to the computer for display. Then, the impeller is corrected, and the dynamic and static balance test of the impeller can be automatically performed, which reduces manual assistance, reduces the test burden, and improves the test effect. Example 3

[0022] See also Figures 6 to 10The counterweight assembly 4 includes a support plate 401, a placement arc plate 402, a support rod 403, a connecting frame 404, a fourth gear 405, a toothed belt 406, a conveyor belt 407, a limit port 408, a magnetic counterweight block 409 and a connecting plate 4010. The support plate 401 is fixedly connected to the outer wall of one side of the movable plate 204, the arc plate 402 is fixedly connected to the outer wall of the top end of the support plate 401, the outer walls of both sides of the support plate 401 are fixedly connected to the support rod 403, the outer wall of the top end of the support rod 403 is fixedly connected to the connecting frame 404, and the fourth gear 405 is distributed and rotatably connected on the connecting frame 404. The toothed belt 406 is meshed and installed between the fourth gears 405, and the conveyor belt 407 is fixedly connected between the toothed belts 406. A connecting plate 4010 is fixedly connected to the outer wall of one side of the toothed belt 406, and one side of the telescopic rod of the cylinder 304 is fixedly connected to the outer wall of the connecting plate 4010; a limiting opening 408 is distributed on the conveyor belt 407, and a magnetic counterweight block 409 is placed in the limiting opening 408. When the magnetic counterweight block 409 in the limiting opening 408 is separated from the arc plate 402, it will fall onto the impeller. Under the magnetic action of the magnetic counterweight block 409, the magnetic counterweight block 409 is adsorbed to the top of the impeller, which is convenient for adjusting the weight of the impeller; there are eight fourth gears 405, and the fourth gears 405 are distributed in a rectangular shape, which can provide auxiliary support for the conveyor belt 407 and facilitate the conveying processing of the conveyor belt 407.

[0023] In the static balance test, if the gravity of the impeller is unevenly distributed, the impeller drives the rotating sleeve 207 to rotate, so that the center of gravity of the impeller rotates to the bottom of the rotating sleeve 207, and then the cylinder 304 is started to make the connecting plate 4010 move over a large range, and then the toothed belt 406 drives the fourth gear 405 to move, so that the fourth gear 405 rotates along the connecting frame 404 on the support rod 403, thereby driving the conveyor belt 407 to move along the placement arc plate 402 on the support plate 401, so that the magnetic counterweight block 409 in the limit opening 408 is separated from the placement arc plate 402, and then falls to the impeller. On the wheel, the magnetic counterweight block 409 is attracted to the top of the impeller through the magnetic effect of the magnetic counterweight block 409, thereby adjusting the weight of the impeller. During the adjustment, the third gear 306 is moved over a large range, so that the marking bar 8 on the connecting rod 7 can mark the starting position of the impeller. Then the above operation is repeated four to five times, so that the impeller can be kept balanced at different angles, and then the impeller with the magnetic counterweight block 409 is added with oil mud of a specified weight to keep the impeller balanced. The impeller can be automatically fine-tuned for counterweight, without the need for manual fine-tuning of the impeller for counterweight, which reduces the manual burden and improves the adjustment effect of the impeller.

[0024] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A dynamic and static balance test device for an impeller of a well submersible pump, characterized in that: The test platform comprises a test platform body (1), a clamping assembly (2), a balance test assembly (3) and a counterweight assembly (4), wherein the clamping assembly (2) is installed at the top of the test platform body (1), the balance test assemblies (3) are installed on both sides of the test platform body (1), and the counterweight assembly (4) is installed above the test platform body (1); The clamping assembly (2) comprises a T-shaped slide (201), a first motor (202), a first gear (203), a movable plate (204), a slider (205), a rack (206), a rotating sleeve (207), a spring (208), a movable rod (209), a threaded head (2010), a threaded cover (2011) and a clamping disc (2012). The movable plate (204) is symmetrically mounted on the top outer wall of the test platform body (1), and the slider (205) is fixedly connected to the bottom outer wall of the movable plate (204). A T-shaped sliding groove (201) is symmetrically provided at the top of the test platform body (1) corresponding to the position of the slider (205), a rack (206) is fixedly connected to the outer wall of one side of the movable plate (204), and a first gear (203) is meshed and installed between the racks (206), a first motor (202) is embedded and installed at the top of the test platform body (1), and the top of the output shaft of the first motor (202) is fixedly connected to the outer wall of the first gear (203), and a rotating sleeve (207) is rotatably connected to the outer wall of one side of the movable plate (204).

2. The device for testing the dynamic and static balance of an impeller of a submersible pump for a well according to claim 1, characterized in that: A moving rod (209) is sleeved inside the rotating sleeve (207), one end of the moving rod (209) is fixedly connected to a spring (208), and the other end of the spring (208) is fixedly connected to the inner wall of the rotating sleeve (207), the other end of the moving rod (209) is fixedly connected to a threaded head (2010), one end of the threaded head (2010) is threadedly connected to a threaded cover (2011), and the outer side of the threaded cover (2011) is fixedly connected to a clamping disk (2012).

3. The device for testing the dynamic and static balance of an impeller of a submersible pump for a well according to claim 1, characterized in that: The balance test assembly (3) includes a second gear (301), a second motor (302), a limiting shaft (303), a cylinder (304), a pulley (305), a third gear (306), a limiting hole (307) and an annular slide groove (308), wherein the outer side of the rotating sleeve (207) is fixedly connected to the second gear (301), the outer wall of the bottom end of the second gear (301) is meshed with the third gear (306), and the middle part of the third gear (306) is provided with a limiting hole (307), and the limiting hole (307) A limiting shaft (303) is sleeved therein, a second motor (302) is embedded on one side of the movable plate (204), and one end of the output shaft of the second motor (302) is fixedly connected to the outer wall of the limiting shaft (303), an annular groove (308) is opened on one side of the third gear (306), a pulley (305) is symmetrically slidably connected in the annular groove (308), a cylinder (304) is symmetrically embedded on the movable plate (204), and one end of the telescopic rod of the cylinder (304) is rotatably connected to the outer wall of the pulley (305).

4. The device for testing the dynamic and static balance of an impeller of a submersible pump for a well according to claim 1, characterized in that: The counterweight assembly (4) comprises a support plate (401), a placement arc plate (402), a support rod (403), a connecting frame (404), a fourth gear (405), a toothed belt (406), a conveyor belt (407), a limit opening (408), a magnetic counterweight block (409) and a connecting plate (4010). The support plate (401) is fixedly connected to the outer wall of one side of the movable plate (204), the placement arc plate (402) is fixedly connected to the outer wall of the top end of the support plate (401), and the outer walls on both sides of the support plate (401) are fixedly connected to the outer wall of the movable plate (204). A support rod (403) is fixedly connected, a connection frame (404) is fixedly connected to the outer wall of the top end of the support rod (403), a fourth gear (405) is distributed and rotatably connected to the connection frame (404), a toothed belt (406) is meshed and installed between the fourth gears (405), a conveyor belt (407) is fixedly connected between the toothed belts (406), a connection plate (4010) is fixedly connected to the outer wall of one side of the toothed belt (406), and one side of the telescopic rod of the cylinder (304) is fixedly connected to the outer wall of the connection plate (4010).

5. The device for testing the dynamic and static balance of an impeller of a submersible pump for a well according to claim 4, characterized in that: The conveyor belt (407) is provided with limit openings (408) distributed thereon, and a magnetic counterweight (409) is placed and connected in the limit openings (408).

6. The device for testing the dynamic and static balance of an impeller of a submersible pump for a well according to claim 1, characterized in that: A support frame (5) is symmetrically fixedly connected to the outer wall of the top end of the test platform body (1), and a dynamic balance detection probe (6) is embedded and installed on the top end of the support frame (5).

7. The device for testing the dynamic and static balance of an impeller of a submersible pump for a well according to claim 3, characterized in that: A connecting rod (7) is fixedly connected to an outer wall on one side of the third gear (306), and a marking strip (8) is fixedly connected to an outer wall at one end of the connecting rod (7).

8. The device for testing the dynamic and static balance of an impeller of a submersible pump for a well according to claim 3, characterized in that: The limiting shaft (303) is in the shape of a cross, the limiting hole (307) is in the shape of a cross, and the outer side of the limiting shaft (303) is limitedly connected to the inner wall of the limiting hole (307).

9. The device for testing the dynamic and static balance of an impeller of a submersible pump for a well according to claim 4, characterized in that: The number of the fourth gears (405) is eight, and the fourth gears (405) are distributed in a rectangular shape.

10. A working method of a device for testing the dynamic and static balance of an impeller of a well submersible pump according to any one of claims 1 to 9, characterized in that: First, the impeller of the well submersible pump is placed on the test platform body (1), and then the clamping disc (2012) of the specified model is taken out according to the inner diameter of the center hole of the impeller, and then the threaded cover (2011) is screwed onto the threaded head (2010), and then the first motor (202) is started to rotate the first gear (203), and then under the action of the rack (206), the slider (205) on the moving plate (204) is moved closer to each other along the T-shaped slide groove (201), so that the clamping disc (2012) on the threaded cover (2011) clamps the impeller of the well submersible pump. When the impeller of the well submersible pump is clamped, the moving rod (209) is moved along the rotating sleeve (207), and the spring ( 208) is compressed, so that the clamping range can be increased and different types of impellers can be clamped and fixed. When the balance test is completed, the first motor (202) is started to reverse the first gear (203), and then under the action of the rack (206), the slider (205) on the movable plate (204) is reset along the T-shaped slide (201), so that the clamping disk (2012) on the threaded cover (2011) is separated from the impeller, and then under the action of the spring (208), the movable rod (209) is reset along the rotating sleeve (207). When a static balance test is required, the impeller is first clamped, and then the cylinder (304) is started to move the pulley (305), and then the annular slide (308) is moved. Under the action of the limiting hole (307) on the third gear (306) moves along the limiting shaft (303), so that the third gear (306) is meshed with the second gear (301). At this time, the second motor (302) is started to slowly rotate the limiting shaft (303). Under the action of the limiting hole (307), the rotating sleeve (207) on the third gear (306) is rotated to a specified angle. At this time, the cylinder (304) is started to make the pulley (305) continue to move. Then, under the action of the annular groove (308), the third gear (306) and the second gear (301) are staggered. If the impeller's own gravity is unevenly distributed, the impeller drives the rotating sleeve (207) to rotate, so that the center of gravity of the impeller rotates to Directly below the rotating sleeve (207), the cylinder (304) is then started to move the connecting plate (4010) over a large range, and then the toothed belt (406) is driven to drive the fourth gear (405) to move, so that the fourth gear (405) rotates along the connecting frame (404) on the support rod (403), thereby driving the conveyor belt (407) to move along the placement arc plate (402) on the support plate (401), so that the magnetic counterweight (409) in the limit opening (408) is separated from the placement arc plate (402), and then falls onto the impeller. Under the magnetic effect of the magnetic counterweight (409), the magnetic counterweight (409) is adsorbed to the top of the impeller, thereby adjusting the weight of the impeller. During the adjustment,The third gear (306) is moved over a large range so that the marking strip (8) on the connecting rod (7) can mark the starting position of the impeller. Then the above operation is repeated four to five times so that the impeller can be kept balanced at different angles. Then, a specified weight of oil mud is added to the impeller at the magnetic counterweight (409) to keep the impeller balanced. When the dynamic balance test is required, the cylinder (304) is started to move the pulley (305). Then, under the action of the annular groove (308), the limit hole (307) on the third gear (306) is moved along the The limiting shaft (303) moves, causing the third gear (306) to mesh with the second gear (301). At this time, the second motor (302) is started to cause the limiting shaft (303) to rotate rapidly. Under the action of the limiting hole (307), the rotating sleeve (207) on the third gear (306) drives the impeller to rotate rapidly. Then, the dynamic balance detection probe (6) on the support frame (5) is used to detect the rapidly rotating impeller. The detected imbalance and eccentricity are transmitted to the computer for display, and then the impeller is corrected.

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