Testing device and driving equipment

Abstract

The invention relates to a testing device and driving equipment, the testing device comprises a force transmission structure, a force measuring structure and a locking structure, the force transmission structure is used for being coaxially connected with a rotor of the driving device and can move along the axial direction of the rotor along with the rotor under the driving of the axial force of the rotor; the force measuring structure is connected with the force transmission structure and is used for detecting the axial force of the rotor on the force transmission structure; the locking structure is used for locking the position of the force transmission structure in the axial direction of the rotor. When the rotor of the driving device generates axial force, the axial force of the rotor can be accurately transmitted to the force measuring structure through the force transmission structure, and the axial force of the rotor borne by the force transmission structure is accurately detected by the force measuring structure; therefore, the force transmission structure is prevented from deviating from the axial direction of the rotor to obliquely pull the rotor to cause damage to the rotor, and the safety of the axial force test of the rotor is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of axial force testing of a rotor, and particularly to a testing device and a driving device. Background Art

[0002] During the operation of the rotor of an impeller rotating machine, an axial force will be generated. Due to certain errors between design and materials, machining, and installation, the axial force of the rotor generally cannot reach the design value under ideal conditions. In order to enable the rotor to meet the operation requirements after installation, it is necessary to test the actual value of its axial force. However, the existing testing devices cannot precisely control the direction of the acting force applied to the rotor, and the rotor often undergoes lateral displacement deviating from the axis of the rotor under this acting force, resulting in damage, and thus the testing safety of the axial force of the rotor is relatively low. Summary of the Invention

[0003] Based on this, it is necessary to provide a testing device and a driving device that can effectively improve the testing safety of the axial force of the rotor.

[0004] A testing device includes:

[0005] A force transmission structure for coaxially connecting the rotor of a driving device and capable of moving along the axis of the rotor under the drive of the axial force of the rotor;

[0006] A force measuring structure connected to the force transmission structure for detecting the axial force of the rotor received by the force transmission structure; and

[0007] A locking structure for locking the position of the force transmission structure in the axial direction of the rotor.

[0008] In one embodiment, the force transmission structure includes a force transmission rod and a force receiving head. One end of the force transmission rod is connected to the rotor, and the other end of the force transmission rod is connected to the force receiving head. The force transmission rod is used to transmit the axial force of the rotor to the force receiving head, and the force measuring structure is connected to the force receiving head for detecting the axial force of the rotor received by the force receiving head.

[0009] In one embodiment, the testing device further includes a coordination frame connected to the housing of the driving device. The coordination frame and the housing enclose a receiving cavity, the rotor is rotatably arranged in the receiving cavity, one end of the force transmission rod away from the rotor passes through the coordination frame and extends outside the receiving cavity, and the force receiving head is arranged at one end of the force transmission rod extending outside the receiving cavity.

[0010] In one embodiment, the locking structure includes a locking nut which is located outside the receiving cavity, is screwed and sleeved on the outer side of the force transmission rod, and the locking nut abuts between the force receiving head and the coordination frame.

[0011] In one embodiment, the testing device further includes a support ring which abuts between the locking nut and the force receiving head.

[0012] In one embodiment, the testing device further includes a connecting sleeve which is screwed and sleeved on the outer side of one end of the force transmission rod extending outside the receiving cavity, and the force receiving head is sleeved and fixed on the outer side of the connecting sleeve.

[0013] In one embodiment, it further includes at least one of the following technical solutions:

[0014] The force measuring structure includes a force measuring gauge;

[0015] The rotor, the force transmission rod and the force receiving head are coaxially arranged;

[0016] The force transmission rod is in threaded connection with the rotor;

[0017] A sealing structure is provided between the coordination frame and the machine housing;

[0018] A positioning structure is provided between the coordination frame and the machine housing; and

[0019] The coordination frame and the machine housing are connected by a flange.

[0020] A driving device includes a driving means and the above-mentioned testing device. The driving means includes a rotor. The force transmission structure is connected to the rotor and can move along the axial direction of the rotor following the rotor under the drive of the axial force of the rotor.

[0021] In one embodiment, the driving means further includes a machine housing and a stator. The rotor is rotatably arranged in the machine housing. The stator is arranged in the machine housing and is sleeved and fixed on the outer periphery of the rotor, and the stator can generate a rotating magnetic field for driving the rotor to rotate.

[0022] In one embodiment, it further includes at least one of the following technical solutions:

[0023] The driving means further includes a thrust disc which is arranged in the machine housing and is fixedly sleeved on the outer periphery of the rotor;

[0024] The driving means further includes an impeller which is arranged outside the machine housing and is fixedly sleeved on the outer periphery of the rotor; and

[0025] The driving device further includes a temperature control device for adjusting the ambient temperature inside the casing.

[0026] For the testing device provided in this application, when an axial force is generated by the rotor of the driving device, the axial force of the rotor can be accurately transmitted to the force measuring structure through the force transmission structure, and the force measuring structure precisely detects the axial force of the rotor received by the force transmission structure. Moreover, since the force transmission structure is coaxially connected to the rotor, it is ensured that the force transmission structure will not deviate from the axial direction of the rotor to obliquely pull the rotor and cause damage to the rotor, thus effectively improving the safety of the axial force test of the rotor. In addition, when it is necessary to detect the axial force of the rotor operating under different working conditions, the rotor can drive the force transmission structure to move axially along the rotor to a position corresponding to a certain set working condition, and then the position of the force transmission structure in the axial direction of the rotor is locked by the locking structure to prevent the force transmission structure from continuing to move axially along the rotor. Then, the axial force of the rotor received by the force transmission structure under the current working condition is precisely detected by the force measuring structure. Therefore, the testing device of this application can achieve precise detection of the axial force of the rotor operating under different working conditions, effectively improving the axial force test accuracy and range of the testing device, and thus providing very useful and reliable actual test data for the research on the axial force characteristics of the rotor of the driving device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of a driving device provided by an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention in this specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0031] Such as Figure 1As shown in the figure, the present application provides a testing device 100, which includes a force transmission structure 110, a force measurement structure 120, and a locking structure 130. The force transmission structure 110 is used to coaxially connect the rotor 210 of the driving device 200 and can move along the axial direction of the rotor 210 following the rotor 210 under the drive of the axial force of the rotor 210; the force measurement structure 120 is connected to the force transmission structure 110, and the force measurement structure 120 is used to detect the axial force of the rotor 210 received by the force transmission structure 110; the locking structure 130 is used to lock the position of the force transmission structure 110 in the axial direction of the rotor 210.

[0032] For the testing device 100 provided by the present application, when the rotor 210 of the driving device 200 generates an axial force, the axial force of the rotor 210 can be accurately transmitted to the force measurement structure 120 through the force transmission structure 110, and the force measurement structure 120 can precisely detect the axial force of the rotor 210 received by the force transmission structure 110. Moreover, since the force transmission structure 110 is coaxially connected to the rotor 210, it is ensured that the force transmission structure 110 will not deviate from the axial direction of the rotor 210 and obliquely pull the rotor 210, thereby causing damage to the rotor 210, thus effectively improving the safety of the axial force test of the rotor 210; in addition, when it is necessary to detect the axial force of the rotor 210 operating under different working conditions, the rotor 210 can drive the force transmission structure 110 to move along the axial direction of the rotor 210 to a position corresponding to a certain set working condition, and then the locking structure 130 locks the position of the force transmission structure 110 in the axial direction of the rotor 210 to prevent the force transmission structure 110 from continuing to move along the axial direction of the rotor 210. Then, the force measurement structure 120 precisely detects the axial force of the rotor 210 received by the force transmission structure 110 under the current working condition. Therefore, the testing device 100 of the present application can accurately detect the axial force of the rotor 210 operating under different working conditions, effectively improving the axial force test accuracy and range of the testing device 100, thereby providing very useful and reliable actual test data for the research on the axial force characteristics of the rotor 210 of the driving device 200.

[0033] Optionally, the force measurement structure 120 includes a force measuring instrument 121, and the axial force of the rotor 210 received by the force transmission structure 110 can be directly read through the force measuring instrument 121.

[0034] As Figure 1 shown in the figure, the force transmission structure 110 includes a force transmission rod 111 and a force receiving head 112. One end of the force transmission rod 111 is connected to the rotor 210, and the other end of the force transmission rod 111 is connected to the force receiving head 112. The force transmission rod 111 is used to transmit the axial force of the rotor 210 to the force receiving head 112, and the force measurement structure 120 is connected to the force receiving head 112. The force measurement structure 120 is used to detect the axial force of the rotor 210 received by the force receiving head 112.

[0035] Specifically, in this embodiment, the rotor 210, the force transmission rod 111, and the force receiving head 112 are coaxially arranged, ensuring a high coaxiality between the force direction of the force transmission rod 111 and the force receiving head 112 and the axial force direction of the rotor 210, so as to ensure that the force transmission rod 111 and the force receiving head 112 will not deviate from the axial direction of the rotor 210 and obliquely pull the rotor 210, thus causing damage to the rotor 210, and effectively improving the safety of the axial force test of the rotor 210.

[0036] The test device 100 further includes a coordination frame 140. The coordination frame 140 is connected to the housing 220 of the driving device 200. The coordination frame 140 and the housing 220 enclose a receiving cavity 101. The rotor 210 is rotatably arranged in the receiving cavity 101. One end of the force transmission rod 111 away from the rotor 210 passes through the coordination frame 140 and extends outside the receiving cavity 101, and the force receiving head 112 is arranged at the end of the force transmission rod 111 extending outside the receiving cavity 101.

[0037] Specifically, the housing 220 is a hollow structure with one end open. The coordination frame 140 is arranged at the open end of the housing 220, and the coordination frame 140 is connected to the housing 220 by a flange. Further, a positioning structure 150 is arranged between the coordination frame 140 and the housing 220 to ensure the installation coaxiality between the coordination frame 140 and the housing 220. The positioning structure 150 includes a positioning protrusion and a positioning groove. One of the coordination frame 140 and the housing 220 is provided with a positioning protrusion, and the other of the coordination frame 140 and the housing 220 is provided with a positioning groove, and the positioning protrusion is inserted into the positioning groove.

[0038] Further, a sealing structure is arranged between the coordination frame 140 and the housing 220 to achieve the sealing between the coordination frame 140 and the housing 220. The sealing structure includes a sealing ring. One of the coordination frame 140 and the housing 220 is provided with an installation groove 160, and the installation groove 160 can be an annular groove, and the sealing ring is arranged in the installation groove 160.

[0039] In one embodiment, the force transmission rod 111 is threadedly connected to the rotor 210. Specifically, one end of the force transmission rod 111 is provided with an external thread, one end of the rotor 210 is provided with a threaded hole 211, and the end of the force transmission rod 111 provided with the external thread is threadedly connected into the threaded hole 211.

[0040] As Figure 1As shown in the figure, the locking structure 130 includes a locking nut 131. The locking nut 131 is located outside the receiving cavity 101, is screwed and sleeved on the outer side of the force transmission rod 111, and the locking nut 131 abuts between the force receiving head 112 and the coordination frame 140. Specifically, when the force receiving head 112 and the tension rod move along the axial direction of the rotor 210 to the corresponding position under a certain set working condition following the rotor 210, then the locking nut 131 is tightened to adapt to the pre-tightening force of the force receiving head 112, so as to lock the position of the force receiving head 112 in the axial direction of the rotor 210, prevent the force receiving head 112 from continuing to move along the axial direction of the rotor 210, and then the axial force of the rotor 210 on the force receiving head 112 under the current working condition can be accurately detected through the force measuring structure 120.

[0041] The testing device 100 further includes a support ring 170. The support ring 170 abuts between the locking nut 131 and the force receiving head 112. Further, the testing device 100 further includes a connecting sleeve 180. The connecting sleeve 180 is screwed and sleeved on the outer side of the end of the force transmission rod 111 extending outside the receiving cavity 101, and the force receiving head 112 is sleeved and fixed on the outer side of the connecting sleeve 180.

[0042] Specifically, the connecting sleeve 180 extends from one end of the force receiving head 112 to the other end of the force receiving head 112. The end face of the connecting sleeve 180 close to the coordination frame 140 is flush with the end face of the force receiving head 112 close to the coordination frame 140.

[0043] The support ring 170 is coaxially arranged with the force transmission rod 111. The inner diameter of the support ring 170 is larger than the outer diameter of the locking nut 131. One end of the support ring 170 is sleeved on the outer side of the locking nut 131, and the other end of the support ring 170 abuts on the force receiving head 112. The support ring 170 includes a first support ring and a second support ring connected to the first support ring. The first support ring and the second support ring are coaxially arranged. The outer diameter of the first support ring is smaller than the outer diameter of the second support ring, and the inner diameter of the first support ring is smaller than the inner diameter of the second support ring. A step is formed at the connection between the first support ring and the second support ring. One end of the first support ring away from the second support ring is sleeved on the outer side of the locking nut 131, and the other end of the second support ring away from the first support ring abuts on the force receiving head 112 and is sleeved on the outer side of the connecting sleeve 180.

[0044] As Figure 1 As shown in the figure, the present application further provides a driving device 10. The driving device 10 includes a driving device 200 and the above-mentioned testing device 100. The driving device 200 includes a rotor 210. The force transmission structure 110 is coaxially connected to the rotor 210 and can move along the axial direction of the rotor 210 following the rotor 210 under the drive of the axial force of the rotor 210.

[0045] The driving device 200 further includes a housing 220 and a stator. The rotor 210 is rotatably arranged inside the housing 220. The stator is arranged inside the housing 220 and is sleeved and fixed on the outer periphery of the rotor 210, and the stator can generate a rotating magnetic field to drive the rotor 210 to rotate. Specifically, the rotor 210 rotatably penetrates through the stator. The rotor 210 has magnetism, and the stator can generate a rotating magnetic field to drive the rotor 210 to rotate, so that the stator can drive the rotor 210 to rotate.

[0046] As Figure 1 shown, the driving device 200 further includes an impeller 230. The impeller 230 is arranged outside the housing 220 and is fixedly sleeved on the outer periphery of the rotor 210. Specifically, the stator can drive the rotor 210 to rotate, so as to drive the impeller 230 to rotate through the rotor 210. Specifically, one end of the force transmission rod 111 away from the force receiving head 112 passes through the impeller 230 and is connected to the rotor 210. External threads are provided on other parts of the force transmission rod 111 except for the part cooperating with the impeller 230.

[0047] The driving device 200 further includes a thrust disc 240. The thrust disc 240 is arranged inside the housing 220 and is fixedly sleeved on the outer periphery of the rotor 210. The thrust disc 240 and the impeller 230 are arranged at intervals along the axial direction of the rotor 210. The thrust disc 240 and the impeller 230 are accommodated in the accommodation cavity 101 jointly formed by the housing 220 and the coordination frame 140. The impeller 230 is arranged relatively closer to the coordination frame 140 than the thrust disc 240.

[0048] The driving device 200 further includes a temperature control device. The temperature control device is used to adjust the ambient temperature inside the housing 220, so that the ambient temperature inside the machine can be maintained at a set temperature, so that the ambient temperature where the rotor 210 is located can be the same as its operating condition temperature, ensuring that the duration of the axial force test of the rotor 210 is not restricted, and further ensuring the safety and consistency of the axial force test of the rotor 210.

[0049] The temperature control device includes a first ventilation hole 221, a second ventilation hole 222 and a thermometer. The first ventilation hole 221 and the second ventilation hole 222 are arranged at intervals on the side wall of the housing 220. The thermometer is arranged inside the housing 220. The first ventilation hole 221 and the second ventilation hole 222 are arranged on opposite sides of the housing 220. The temperature control medium (such as temperature control gas) can enter the housing 220 through the first ventilation hole 221 and then move out of the housing 220 through the second ventilation hole 222 to realize the cooling of the inside of the housing 220. The thermometer is used to detect the ambient temperature inside the housing 220.

[0050] Specifically, the thermometer can be installed on the stator. When the ambient temperature inside the casing 220 detected by the thermometer is higher than the set temperature of the rotor 210 under the current working conditions, the temperature control medium can enter the casing 220 through the first vent hole 221, and then move out of the casing 220 through the second vent hole 222 to achieve the cooling of the inside of the casing 220, ensuring that the ambient temperature where the rotor 210 is located can maintain the same temperature as its operating conditions, guaranteeing that the duration of the axial force test of the rotor 210 is not restricted, and further ensuring the safety and consistency of the axial force test of the rotor 210.

[0051] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered that the scope described in this specification.

[0052] The above embodiments only represent the preferred implementation modes of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A testing device, characterized in that, Comprising: A force transmission structure for coaxially connecting a rotor of a driving device and capable of moving along the axial direction of the rotor following the rotor under the drive of the axial force of the rotor; A force measuring structure connected to the force transmission structure for detecting the axial force of the rotor received by the force transmission structure; And A locking structure for locking the position of the force transmission structure in the axial direction of the rotor.

2. The test device according to claim 1, characterized in that The force transmission structure includes a force transmission rod and a force receiving head. One end of the force transmission rod is connected to the rotor, and the other end of the force transmission rod is connected to the force receiving head. The force transmission rod is used to transmit the axial force of the rotor to the force receiving head. The force measuring structure is connected to the force receiving head for detecting the axial force of the rotor received by the force receiving head.

3. The testing device according to claim 2, characterized in that, The testing device further includes a coordination frame connected to the housing of the driving device. The coordination frame and the housing enclose a receiving cavity. The rotor is rotatably arranged in the receiving cavity. One end of the force transmission rod away from the rotor passes through the coordination frame and extends outside the receiving cavity. The force receiving head is arranged at the end of the force transmission rod extending outside the receiving cavity.

4. The testing device according to claim 3, wherein The locking structure includes a locking nut located outside the receiving cavity and threadedly sleeved on the outer side of the force transmission rod, and the locking nut abuts between the force receiving head and the coordination frame.

5. The testing device according to claim 4, characterized in that, The testing device further includes a support ring that abuts between the locking nut and the force receiving head.

6. The testing device according to claim 3, wherein The testing device further includes a connecting sleeve threadedly sleeved on the outer side of the end of the force transmission rod extending outside the receiving cavity, and the force receiving head is sleeved and fixed on the outer side of the connecting sleeve.

7. The test device according to claim 3, wherein, It further includes at least one of the following technical solutions: The force measuring structure includes a force measuring instrument; The rotor, the force transmission rod and the force receiving head are coaxially arranged; The force transmission rod is threadedly connected to the rotor; A sealing structure is provided between the coordination frame and the housing; A positioning structure is provided between the coordination frame and the housing; and The coordination frame and the housing are connected by a flange.

8. A driving device, characterized in that, Comprising a driving device and the testing device according to any one of claims 1 to 7. The driving device includes a rotor. The force transmission structure is coaxially connected to the rotor and can move along the axial direction of the rotor following the rotor under the drive of the axial force of the rotor.

9. The drive device according to claim 8, characterized in that, The driving device further includes a housing and a stator. The rotor is rotatably arranged in the housing. The stator is arranged in the housing and sleeved and fixed on the outer periphery of the rotor, and the stator can generate a rotating magnetic field to drive the rotor to rotate.

10. The drive device according to claim 9, characterized in that, It further includes at least one of the following technical solutions: The driving device further includes a thrust disc arranged in the housing and fixedly sleeved on the outer periphery of the rotor; The driving device further includes an impeller arranged outside the housing and fixedly sleeved on the outer periphery of the rotor; and The driving device further includes a temperature control device for adjusting the ambient temperature in the housing.

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