Low-temperature waste heat ORC turbo expander system test equipment
By combining stress detection and vibration detection components on the turbine expander, the problem that existing devices cannot detect vibration of the turbine expander pipeline interface is solved, and accurate detection of stress and vibration states at the turbine expander pipeline interface is achieved, ensuring the stability of the sealing state.
Patent Information
- Application Number
- CN202510767901.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-10
- Publication Date
- 2025-07-18
AI Technical Summary
The existing vibration detection device cannot effectively detect the relative vibration between the impeller, generator and other installed body of the turbine expander and the entrance and exit connected to the external pipeline, resulting in leakage at the interface, and the existing device cannot accurately reflect the vibration state at the pipeline interface of the turbine expander.
The stress detection assembly is rigidly connected to the generator fixed legs of the turbine expander through a fixed assembly, and the vibration detection assembly is combined with the elastically supported vibration detection assembly to detect the vibration state at the pipeline interface of the turbine expander, including the combination of stress detection and vibration detection components, and is suitable for turbine expanders of different models and sizes.
Accurate detection of stress and vibration states at the pipeline interface of the turbine expander is achieved, the stability of the sealing state is ensured, and the turbine expander of different models and sizes is adapted to, and the accuracy and stability of detection is improved.
Smart Images
Figure CN120331903A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of energy-saving power generation of turboexpanders, and particularly to a testing device for a low-temperature waste heat ORC turboexpander system. Background Art
[0002] ORC, i.e., Organic Rankine Cycle, is a power cycle system that uses organic working fluids (such as pentane, R245fa, etc.) instead of steam as the circulating working fluid. It is mainly used to recover and utilize medium- and low-temperature (usually between 80 - 300°C) heat energy, convert this heat energy into mechanical energy, and then generate electrical energy. The turboexpander is a key device in the ORC system, which can convert the internal energy of the gas into mechanical energy and can be further used for power generation or other power-driven devices, playing an important role in multiple fields. When the high-temperature and high-pressure organic working fluid enters the turboexpander, the organic working fluid expands inside the expander, pushing the impeller of the turbine to rotate. During this process, the internal energy (mainly pressure energy and heat energy) of the organic working fluid is converted into the mechanical energy of the turbine impeller. Since the ORC system uses organic working fluids, the boiling points of these working fluids are lower than that of water, and they can be more easily vaporized and expanded under medium- and low-temperature heat sources, which enables the ORC turboexpander to utilize a variety of low-grade heat sources, such as industrial waste heat (e.g., waste heat from the exhaust gas of cement plants, steel plants, etc.), solar thermal energy, geothermal energy, etc.
[0003] During operation, the turboexpander may vibrate due to various factors. During the manufacturing process of the rotor of the motor, due to reasons such as uneven material and insufficient machining accuracy, the mass distribution may deviate from the ideal state. During operation, this unbalanced mass will generate centrifugal force, and as the rotor rotates, the direction of the centrifugal force changes continuously, thus causing vibration; in terms of technology, if the intake pipeline of the turboexpander is designed unreasonably, resulting in uneven airflow entering the turboexpander, the impeller will be subjected to unstable aerodynamic forces, and the airflow will generate vortices and turbulence, causing uneven aerodynamic force distribution on the surface of the impeller, thus causing vibration; the turboexpander operates optimally under the design conditions, but when the actual wide-range operating conditions (such as intake pressure, temperature, flow rate, etc.) deviate significantly from the design conditions, surging may occur. When the intake flow rate is too low, the flow of gas in the impeller channel will experience separation and reverse flow phenomena, resulting in periodic fluctuations in the pressure difference between the inlet and outlet of the impeller, causing machine vibration, and at the same time, there will be strong noise. After the existing vibration detection device is fixed on the surface of the object to be detected, it can only detect the single vibration state of the target object and cannot obtain the relative vibration between the target object and the installed object. However, relative vibrations will occur between the installed bodies such as the impeller and generator of the turboexpander and the inlets and outlets connected to the external pipeline, which will lead to leakage at the interfaces. It is very difficult for the existing vibration detection devices to reflect the relative vibration between the two installed bodies at the interfaces. Summary of the Invention
[0004] In view of the deficiencies in the prior art, the present invention provides a low-temperature waste heat ORC turbine expander system testing equipment, which rigidly connects a stress detection component with a mounting body and a mounted body through a fixing component, and cooperates with a vibration detection component that is elastically supported in the detection state to obtain the vibration state of the pipeline interface of the turbine expander.
[0005] To achieve the above object, the present invention provides the following technical solutions: A low-temperature waste heat ORC turbine expander system test equipment includes a stress detection component and a vibration detection component for detecting installation components on the turbine expander. The test equipment includes a chassis and a stress detection component and a vibration detection component arranged on the chassis. The chassis is also provided with a fixing component fixedly connected to a fixed leg of the turbine expander; a second fixing component is also provided on one side of the fixing component, and an adjustment component is provided between the fixing component and the second fixing component, and the spacing between the fixing component and the second fixing component is adjusted by the adjustment component; a support frame is provided on the lifting component on the chassis, and a stress detection component and a vibration detection component are provided on the support frame; after the lifting component lifts the support frame, the stress detection component and the vibration detection component abut against the lower end of the outlet pipe of the turbine expander; and after the support frame is lifted, the vibration detection component is elastically connected to the support frame, and the vibration of the outlet pipe is detected by a vibration sensor in the vibration detection component.
[0006] Furthermore, a wheel seat is provided on the bottom plate of the chassis, and the adjusting component includes an operating part fixed on the wheel seat, and an adjusting screw is provided on the operating part; the two ends of the adjusting screw are respectively transmission-connected with the mounting seat of the fixed component and the mounting seat of the second fixed component; the sliding seats of the fixed component and the second fixed component are slidably provided on the guide rails on the bottom plate; the sliding seats of the fixed component and the second fixed component are also connected by a guide rod.
[0007] Furthermore, a fixing clamp is provided at one end of the sliding seat of the fixing assembly, and a nut seat is provided at the other end; a guide rod is provided between the nut seat and the fixing clamp, and a sliding clamp is slidably provided on the guide rod; a clamping screw is transmission-connected to the nut seat; one end of the clamping screw is rotatably connected to the sliding clamp, and a handle is provided at the other end; the mounting seat and the fixing clamp are provided on both sides of the sliding seat.
[0008] Furthermore, the lifting assembly includes a lifting support platform fixed on the base plate, and a cylinder is arranged inside the lifting support platform; the movable end of the cylinder is fixedly connected to the lifting plate of the support frame, and a limiting rod is arranged at the lower part of the lifting plate; a plurality of limiting holes are arranged on the upper end surface of the lifting support platform, and the limiting rod of the support frame cooperates with the limiting holes.
[0009] Furthermore, an upper fixing frame is provided at the upper end of the lifting plate of the support frame, and a lower fixing frame is provided at the lower end of the lifting plate and below the upper fixing frame; a vibration detection component is provided in the accommodating space formed by the upper and lower fixing frames; a stress detection component is provided at the upper end of the lifting plate and on one side of the upper fixing frame; the upper end of the vibration detection component extends out of the upper fixing frame and is higher than the stress detection component.
[0010] Furthermore, the guide frame of the stress detection assembly is fixedly connected to the lifting plate of the support frame, and the stress sensor of the stress detection assembly is arranged inside the guide frame; the lower end of the stress sensor is fixed to the lifting plate, and the fixing rod connected to the upper end of the stress sensor extends to the top of the guide frame; the fixing rod cooperates with the guide hole in the guide frame to limit the force direction of the stress sensor, and an abutment block is fixed to the upper end of the fixing rod.
[0011] Furthermore, an elastic component is provided at the lower end of the pneumatic component of the vibration detection component, and the elastic component abuts against the lower fixed frame of the support frame; a conical barrel is provided at the upper end of the pneumatic component, and the conical barrel cooperates with the conical hole on the upper fixed frame; an adsorption component is provided at the upper end of the conical barrel extending out of the upper fixed frame, and the adsorption component can be engaged with the lower end surface of the outlet pipe; a vibration sensor is fixedly installed on the pneumatic component, and after the adsorption component is engaged with the outlet pipe, the vibration state of the outlet pipe is detected by the vibration sensor.
[0012] Furthermore, the adsorption component of the vibration detection component includes an arc-shaped groove with an arc-shaped cross-section, in which a sealing ring is arranged; the adsorption component has a cavity inside, and the cavity is connected to the pneumatic component, and the negative pressure generated by the pneumatic component fixes the adsorption component to the lower end of the outlet pipe.
[0013] Furthermore, a plurality of elastic parts are circumferentially arranged on the side wall of the tapered hole of the upper fixed frame, and a limit seat cooperating with the elastic component is arranged on the lower fixed frame; the limit seat limits the lateral movement of the elastic component; the height of the adsorption component of the vibration detection component in the initial state is higher than the abutment block of the stress detection component; after the lifting plate rises until the abutment block abuts against the outlet pipe, the outlet pipe pushes the adsorption component and makes the conical barrel break away from the lateral position limit of the tapered hole of the upper fixed frame.
[0014] Furthermore, the turbine expander includes a generator and a primary impeller shell and a secondary impeller shell arranged at both ends of the generator; the primary impeller shell is fixedly connected to the inlet pipe, the secondary impeller shell is fixedly connected to the outlet pipe, and the primary impeller shell and the secondary impeller shell are connected by a connecting pipe.
[0015] Compared with the prior art, the present invention provides a test device for a low-temperature waste heat ORC turbine expander system, which has the following beneficial effects: The stress detection component is rigidly connected to the fixed leg of the generator of the turbine expander through the fixing component. The stress detection component detects the stress change generated by the relative vibration between the outlet pipe connected to the external pipeline and the generator during the operation of the turbine expander, so as to detect the sealing state between the outlet pipe and the impeller housing of the generator; Two groups of fixing components are symmetrically arranged, which can provide strong rigid connection and effectively and stably transmit stress, adapt to different models and sizes of turbine expanders, and facilitate digital processing of vibration signals and stress signals; The stress detection component and the vibration detection component with different initial heights are arranged on the support frame. When the stress detection component is in the detection state, the adsorption component of the vibration detection component is pushed by the outlet pipe to be measured, so that the lateral position limit of the cone barrel of the vibration detection component from the conical hole of the upper fixing frame is released, and the vibration sensor on the vibration detection component is in an elastic support state, so that the vibration state of the outlet pipe can be accurately detected. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 FIG. is a schematic diagram of the overall structure of the test device for the low-temperature waste heat ORC turbine expander system of the present invention; Figure 2 FIG. is a schematic top view structure diagram of the test device for the low-temperature waste heat ORC turbine expander system of the present invention; Figure 3 FIG. is a schematic side view structure diagram of the test device for the low-temperature waste heat ORC turbine expander system of the present invention; Figure 4 FIG. is a schematic structure diagram of the test device of the present invention; Figure 5 FIG. is a schematic structure diagram of the fixing component of the present invention; Figure 6 FIG. is an exploded view of the lifting component of the present invention; Figure 7 FIG. is a schematic structure diagram of the stress detection component of the present invention; Figure 8 FIG. is a schematic structure diagram of the vibration detection component of the present invention; Figure 9 FIG. is a schematic diagram of the lifting process of the vibration detection component of the present invention; In the figure: Chassis 1, bottom plate 11, guide rail 12, support 13, wheel seat 14; Fixing component 2, sliding seat 21, mounting seat 22, fixing clamp 23, sliding clamp 24, guide rod 25, clamping screw 26, handle 27, nut seat 28, second fixing component 20; Adjusting component 3, operating part 31, adjusting screw 32, guide rod 33; Turboexpander 4, generator 41, first-stage impeller housing 42, second-stage impeller housing 43, connecting pipe 44, outlet pipe 45, inlet pipe 46, fixed support leg 47, vibration damping seat 48; Lifting assembly 5, lifting support platform 51, cylinder 52, limit hole 53; Support frame 6, lifting plate 61, upper fixing frame 62, tapered hole 621, elastic member 622, lower fixing frame 63, limit seat 630, limit rod 64; Stress detection assembly 7, stress sensor 71, fixing rod 72, abutting block 73, guiding frame 74; Vibration detection assembly 8, pneumatic assembly 81, conical barrel 82, adsorption assembly 83, cavity 831, sealing ring 832, arc-shaped groove 833, vibration sensor 84, elastic assembly 85; Specific embodiments
[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0018] The low-temperature waste heat ORC turboexpander system test equipment of the present invention will be described in detail below according to the accompanying drawings. The test equipment includes a stress detection assembly 7 and a vibration detection assembly 8 for detecting the stress of the installation components on the turboexpander 4. The test equipment includes a chassis 1 and the stress detection assembly 7 and the vibration detection assembly 8 provided on the chassis 1. A fixing component 2 fixedly connected to the fixed support leg 47 of the turboexpander 4 is further provided on the chassis 1; a second fixing component 20 is further provided on one side of the fixing component 2, and an adjusting component 3 is provided between the fixing component 2 and the second fixing component 20 to adjust the distance between the fixing component 2 and the second fixing component 20; a support frame 6 is provided on the lifting assembly 5 on the chassis 1, and the stress detection assembly 7 and the vibration detection assembly 8 are provided on the support frame 6; after the lifting assembly 5 lifts the support frame 6, the stress detection assembly 7 and the vibration detection assembly 8 abut against the lower end of the outlet pipe 45 of the turboexpander 4; and after the support frame 6 is lifted, the vibration detection assembly 8 is elastically connected to the support frame 6, and the vibration of the outlet pipe 45 is detected by the vibration sensor 84 in the vibration detection assembly 8.
[0019] Specifically, during the manufacturing process of the rotor of the generator 41 of the turbo-expander 4, due to reasons such as uneven material and insufficient machining accuracy, the mass distribution may deviate from the ideal state. During operation, this unbalanced mass will generate a centrifugal force, and as the rotor rotates, the direction of the centrifugal force constantly changes, thus causing vibration. Since the outlet pipe 45 and the inlet pipe 46 on the turbo-expander 4 are connected to the external pipelines, the vibration generated by the operation of the generator 41 itself will cause stress fluctuations and vibrations at the connection points between the outlet pipe 45 and the inlet pipe 46 and the generator 41, and strong vibrations may lead to leakage at the interfaces. It is very difficult to reflect the relative vibration between the outlet pipe 45, the inlet pipe 46 and the generator 41 by simply fixing the vibration detection device and the stress detection device on the outlet pipe 45 or the inlet pipe 46, and the stress and vibration states at the interfaces between the outlet pipe 45, the inlet pipe 46 and the generator 41 cannot be obtained. In the present invention, the fixing component 2 is fixedly connected to the fixing leg 47 of the generator 41, the fixing part of the stress detection component 7 is fixedly connected to the fixing leg 47 of the generator 41, and the stress detection component 7 is used to detect the stress state of the outlet pipe 45 on the generator 41, and cooperate with the vibration detection component 8 to obtain the stress and vibration states at the interface between the outlet pipe 45 and the generator 41, so as to effectively detect the sealing state at the connection between the outlet pipe 45 and the generator 41.
[0020] A wheel seat 14 is arranged on the bottom plate 11 of the chassis 1. The adjusting component 3 includes an operation part 31 fixed on the wheel seat 14, and an adjusting screw 32 is arranged on the operation part 31; both ends of the adjusting screw 32 are respectively in transmission connection with the mounting seats 22 of the fixing component 2 and the second fixing component 20; the sliding seats 21 of the fixing component 2 and the second fixing component 20 are slidably arranged on the guide rail 12 on the bottom plate 11; a guide rod 33 is also connected between the sliding seats 21 of the fixing component 2 and the second fixing component 20.
[0021] Specifically, the fixing component 2 and the second fixing component 20 are symmetrically arranged on both sides of the adjusting component 3. The operation part 31 is arranged in the middle of the adjusting screw 32, and the thread directions of the threaded sections at both ends of the adjusting screw 32 are opposite; there are two fixing legs 47 of the generator 41 of the turbo-expander 4 arranged side by side, and the fixing component 2 and the second fixing component 20 are respectively clamped and fixed to the fixing legs 47 of the generator 41; by rotating the operation part 31, the adjusting screw 32 can drive the fixing component 2 and the second fixing component 20 on both sides to slide towards each other / relatively away from each other, which is convenient to adjust the clamping positions of the fixing component 2 and the second fixing component 20, so as to fix the turbo-expander system test equipment at different positions of the generator 41, and at the same time, it can also adapt to different models and sizes of turbo-expanders.
[0022] There are also multiple guide rods 33 between the fixed component 2 and the slide block 21 of the second fixed component 20, which can improve the stability after the fixed component 2 and the second fixed component 20 are clamped. At the same time, it can improve the rigid connection strength provided by the fixed component 2 and the second fixed component 20 to the stress detection component 7. The slider at the bottom end of the slide block 21 is slidably matched with the guide rail 12 on the bottom plate 11. The symmetrically arranged fixed component 2 and the second fixed component 20 can effectively and stably transmit stress, facilitating the digital processing of vibration signals and stress signals.
[0023] One end of the slide block 21 of the fixed component 2 is provided with a fixed clamp 23, and the other end is provided with a nut seat 28; a guide rod 25 is arranged between the nut seat 28 and the fixed clamp 23, and a sliding clamp 24 is slidably arranged on the guide rod 25; a clamping screw rod 26 is drivingly connected to the nut seat 28; one end of the clamping screw rod 26 is rotatably connected to the sliding clamp 24, and the other end is provided with a handle 27; the mounting seat 22 and the fixed clamp 23 are arranged on both sides of the slide block 21.
[0024] Specifically, the fixed clamp 23 of the fixed component 2 and the fixed clamp 23 of the second fixed component 20 are arranged adjacent to the adjusting component 3. When clamping and fixing, first, the distance between the fixed clamp 23 and the sliding clamp 24 is maximized by operating the handle 27. The distance between the fixed clamp 23 of the fixed component 2 and the fixed clamp 23 of the second fixed component 20 is changed through the adjusting component 3, and they are respectively abutted against the side surface of the fixed leg 47 of the generator 41 and tightened. Then, operate the handle 27 to make the sliding clamp 24 approach the fixed clamp 23 and clamp and fix it on both sides of the fixed leg 47. The symmetrically arranged fixed component 2 and the second fixed component 20 of the present invention can improve the clamping and fixing stability by clamping and fixing two fixed legs 47. At the same time, the clamping structure is symmetrically arranged on the generator 41 of the turbine expander 4, which can effectively transmit stress and vibration signals, facilitating the digital processing of vibration signals and stress signals.
[0025] The lifting component 5 includes a lifting support platform 51 fixed on the bottom plate 11. A cylinder 52 is arranged inside the lifting support platform 51; the movable end of the cylinder 52 is fixedly connected to the lifting plate 61 of the support frame 6. A limiting rod 64 is arranged at the lower part of the lifting plate 61; a plurality of limiting holes 53 are arranged on the upper end surface of the lifting support platform 51, and the limiting rod 64 of the support frame 6 is matched with the limiting holes 53.
[0026] An upper fixing frame 62 is arranged at the upper end of the lifting plate 61 of the support frame 6. A lower fixing frame 63 is arranged at the lower end of the lifting plate 61 and below the upper fixing frame 62; a vibration detection component 8 is arranged in the accommodating space formed by the upper fixing frame 62 and the lower fixing frame 63; a stress detection component 7 is arranged on one side of the upper fixing frame 62 at the upper end of the lifting plate 61; the upper end of the vibration detection component 8 extends out of the upper fixing frame 62 and is higher than the stress detection component 7.
[0027] Specifically, when the lifting plate 61 of the support frame 6 is in the non-lifted state, the upper end of the vibration detection assembly 8 extends out of the upper fixing frame 62 and is higher than the stress detection assembly 7. After the air cylinder 52 drives the lifting plate 61 to rise and enables the stress detection assembly 7 to abut against the lower end of the outlet pipe 45, the outlet pipe 45 can push the vibration detection assembly 8 to move downward relative to the upper fixing frame 62 and make the vibration detection assembly 8 in the elastic support state of the lower fixing frame 63, so as to facilitate the vibration sensor 84 in the vibration detection assembly 8 to detect the vibration state of the outlet pipe 45.
[0028] The guide frame 74 of the stress detection assembly 7 is fixedly connected to the lifting plate 61 of the support frame 6, and the stress sensor 71 of the stress detection assembly 7 is arranged inside the guide frame 74; the lower end of the stress sensor 71 is fixed to the lifting plate 61, and the fixing rod 72 connected to the upper end of the stress sensor 71 extends above the guide frame 74; the fixing rod 72 is matched with the guide hole in the guide frame 74 to limit the stress direction of the stress sensor 71, and an abutting block 73 is fixed to the upper end of the fixing rod 72.
[0029] Specifically, the upper end surface of the abutting block 73 has an arc-shaped groove, and the arc-shaped groove is adapted to the shape of the lower end surface of the outlet pipe 45. After the air cylinder 52 drives the lifting plate 61 of the support frame 6 to rise, the abutting block 73 on the stress sensor 71 abuts against the lower end of the outlet pipe 45. After the stress sensor 71 generates predetermined data, the air cylinder 52 is controlled to stop operating, and the stress generated by the vibration of the outlet pipe 45 during the working state of the turbine expander 4 is detected by the stress sensor 71.
[0030] An elastic component 85 is arranged at the lower end of the pneumatic component 81 of the vibration detection assembly 8, and the elastic component 85 abuts against the lower fixing frame 63 of the support frame 6; a cone barrel 82 is arranged at the upper end of the pneumatic component 81, and the cone barrel 82 is matched with the conical hole 621 on the upper fixing frame 62; an adsorption component 83 is arranged at the upper end of the cone barrel 82 extending out of the upper fixing frame 62, and the adsorption component 83 can be engaged with the lower end surface of the outlet pipe 45; the pneumatic component 81 is fixedly installed with a vibration sensor 84, and after the adsorption component 83 is engaged with the outlet pipe 45, the vibration state of the outlet pipe 45 is detected by the vibration sensor 84.
[0031] Specifically, a plurality of elastic components 85 arranged side by side are provided at the lower end of the pneumatic component 81 to provide elastic support in the vertical direction. An installation groove is provided at the upper end of the pneumatic component 81, and the vibration sensor 84 is fixed in the installation groove. After the cylinder 52 drives the lifting plate 61 to rise, when the lower end surface of the outlet pipe 45 abuts against the adsorption component 83, the cylinder 52 drives the lifting plate 61 to continue rising a certain height, so that the cone barrel 82 of the vibration detection component 8 is separated from the cone hole 621 of the upper fixing frame 62 by a certain distance and compresses the elastic component 85, making the vibration detection component 8 in an elastic support state that is disengaged from the lateral displacement limit.
[0032] The adsorption component 83 of the vibration detection component 8 includes an arc-shaped groove 833 with an arc-shaped cross-section, and a sealing ring 832 is arranged in the arc-shaped groove 833; the inside of the adsorption component 83 is a cavity 831, and the cavity 831 is communicated with the pneumatic component 81, and the adsorption component 83 is fixed at the lower end of the outlet pipe 45 by generating negative pressure through the pneumatic component 81.
[0033] A plurality of elastic members 622 are circumferentially arranged on the side wall of the cone hole 621 of the upper fixing frame 62, and a limit seat 630 cooperating with the elastic component 85 is arranged on the lower fixing frame 63; the limit seat 630 restricts the lateral movement of the elastic component 85; in the initial state, the height of the adsorption component 83 of the vibration detection component 8 is higher than the abutting block 73 of the stress detection component 7; after the lifting plate 61 rises to abut the abutting block 73 against the outlet pipe 45, the outlet pipe 45 pushes the adsorption component 83 and makes the cone barrel 82 disengage from the lateral position limit of the cone hole 621 of the upper fixing frame 62.
[0034] The turboexpander 4 includes a generator 41 and a first-stage impeller housing 42 and a second-stage impeller housing 43 arranged at both ends of the generator 41; the first-stage impeller housing 42 is fixedly connected to the inlet pipe 46, the second-stage impeller housing 43 is fixedly connected to the outlet pipe 45, and the first-stage impeller housing 42 and the second-stage impeller housing 43 are connected by a connecting pipe 44.
[0035] The generator 41 of the turboexpander 4 of the present invention includes two stages of impellers. The first-stage impeller housing 42 and the second-stage impeller housing 43 are respectively arranged outside the two stages of impellers of the generator 41. When the turboexpander 4 operates, the generator 41, the first-stage impeller housing 42, the second-stage impeller housing 43, and the connecting pipe 44 vibrate synchronously, and the outlet pipe 45 and the inlet pipe 46 connected to the external pipeline will generate relative displacements. Therefore, leakage may occur at the joint due to vibration.
[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A low temperature waste heat ORC turbo expander system testing device, comprising a stress detection component (7) and a vibration detection component (8) for detecting mounting components on a turbo expander (4), characterized in that: The testing device comprises a chassis (1) and a stress detection component (7) and a vibration detection component (8) arranged on the chassis (1). The chassis (1) is also provided with a fixing assembly (2) fixedly connected to a fixing leg (47) of the turbine expander (4); A second fixing component (20) is also provided on one side of the fixing component (2), and an adjustment component (3) is provided between the fixing component (2) and the second fixing component (20), and the distance between the fixing component (2) and the second fixing component (20) is adjusted by the adjustment component (3); A support frame (6) is provided on the lifting assembly (5) on the chassis (1), and a stress detection assembly (7) and a vibration detection assembly (8) are provided on the support frame (6); The lifting assembly (5) lifts the support frame (6) so that the stress detection assembly (7) and the vibration detection assembly (8) abut against the lower end of the outlet pipe (45) of the turbine expander (4); After the support frame (6) is lifted, the vibration detection component (8) is elastically connected to the support frame (6), and the vibration of the outlet pipe (45) is detected by the vibration sensor (84) in the vibration detection component (8).
2. The turboexpander system testing device according to claim 1, characterized in that: A wheel seat (14) is arranged on the bottom plate (11) of the chassis (1), and the adjustment assembly (3) comprises an operating portion (31) fixed on the wheel seat (14), and an adjustment screw (32) is arranged on the operating portion (31); The two ends of the adjusting screw (32) are respectively in driving connection with the mounting seat (22) of the fixing assembly (2) and the mounting seat (22) of the second fixing assembly (20); The slide seats (21) of the fixing assembly (2) and the second fixing assembly (20) are slidably disposed on the guide rails (12) on the bottom plate (11); The fixing assembly (2) and the slide seat (21) of the second fixing assembly (20) are also connected via a guide rod (33).
3. The turboexpander system testing device according to claim 2, characterized in that: A fixing clamp (23) is disposed at one end of the slide seat (21) of the fixing assembly (2), and a nut seat (28) is disposed at the other end; A guide rod (25) is provided between the nut seat (28) and the fixing clamp (23), and a sliding clamp (24) is slidably provided on the guide rod (25); The nut seat (28) is drivingly connected to a clamping screw (26); One end of the clamping screw (26) is rotatably connected to the sliding clamp (24), and the other end is provided with a handle (27); The mounting seat (22) and the fixing clamp (23) are arranged on both sides of the sliding seat (21).
4. The turboexpander system testing device according to claim 3, characterized in that: The lifting assembly (5) comprises a lifting support platform (51) fixed on the bottom plate (11), wherein a cylinder (52) is arranged inside the lifting support platform (51); The movable end of the cylinder (52) is fixedly connected to the lifting plate (61) of the support frame (6), and a limiting rod (64) is arranged at the lower part of the lifting plate (61); A plurality of limiting holes (53) are arranged on the upper end surface of the lifting support platform (51), and the limiting rod (64) of the support frame (6) cooperates with the limiting holes (53).
5. The test equipment for a turboexpander system according to claim 4, wherein: An upper fixing frame (62) is arranged at the upper end of the lifting plate (61) of the support frame (6), and a lower fixing frame (63) is arranged at the lower end of the lifting plate (61) and below the upper fixing frame (62); A vibration detection component (8) is arranged in the accommodation space formed by the upper fixing frame (62) and the lower fixing frame (63); A stress detection component (7) is arranged on one side of the upper end of the lifting plate (61) of the support frame (6); The upper end of the vibration detection component (8) extends out of the upper fixing frame (62) and is higher than the stress detection component (7).
6. The test equipment for a turboexpander system according to claim 5, wherein: The guiding frame (74) of the stress detection component (7) is fixedly connected to the lifting plate (61) of the support frame (6), and the stress sensor (71) of the stress detection component (7) is arranged inside the guiding frame (74); The lower end of the stress sensor (71) is fixed to the lifting plate (61), and the fixing rod (72) connected to the upper end of the stress sensor (71) extends above the guiding frame (74); The fixing rod (72) cooperates with the guiding hole in the guiding frame (74) to limit the stress direction of the stress sensor (71), and an abutting block (73) is fixed to the upper end of the fixing rod (72).
7. The test equipment for a turboexpander system according to claim 6, wherein: An elastic component (85) is arranged at the lower end of the pneumatic component (81) of the vibration detection component (8), and the elastic component (85) abuts against the lower fixing frame (63) of the support frame (6); A conical barrel (82) is arranged at the upper end of the pneumatic component (81), and the conical barrel (82) cooperates with the conical hole (621) on the upper fixing frame (62); An adsorption component (83) is arranged at the upper end of the conical barrel (82) extending out of the upper fixing frame (62), and the adsorption component (83) can be engaged with the lower end surface of the outlet pipe (45); The pneumatic component (81) is fixedly installed with a vibration sensor (84), and after the adsorption component (83) is engaged with the outlet pipe (45), the vibration state of the outlet pipe (45) is detected through the vibration sensor (84).
8. The test equipment for a turboexpander system according to claim 7, wherein: The adsorption component (83) of the vibration detection component (8) includes an arc-shaped groove (833) with an arc-shaped cross-section, and a sealing ring (832) is arranged in the arc-shaped groove (833); The inside of the adsorption component (83) is a cavity (831), and the cavity (831) is communicated with the pneumatic component (81), and a negative pressure is generated through the pneumatic component (81) to fix the adsorption component (83) at the lower end of the outlet pipe (45).
9. The turbine expander system testing device according to claim 8, wherein: A plurality of elastic members (622) are circumferentially arranged on the side wall of the tapered hole (621) of the upper fixing frame (62), and a limit seat (630) for cooperating with the elastic assembly (85) is arranged on the lower fixing frame (63); The limit seat (630) restricts the lateral movement of the elastic assembly (85); In the initial state, the height of the adsorption assembly (83) of the vibration detection assembly (8) is higher than that of the abutting block (73) of the stress detection assembly (7); After the lifting plate (61) rises until the abutting block (73) tightly abuts against the outlet pipe (45), the outlet pipe (45) pushes the adsorption assembly (83) and enables the tapered barrel (82) to be disengaged from the lateral position restriction of the tapered hole (621) of the upper fixing frame (62).
10. The turbine expander system testing device according to claim 9, wherein: The turbine expander (4) includes a generator (41) and a first-stage impeller housing (42) and a second-stage impeller housing (43) arranged at both ends of the generator (41); The first-stage impeller housing (42) is fixedly connected to the inlet pipe (46), the second-stage impeller housing (43) is fixedly connected to the outlet pipe (45), and the first-stage impeller housing (42) and the second-stage impeller housing (43) are connected by a communication pipe (44).