Novel multifunctional water pump vibration detection device

Abstract

The utility model belongs to the technical field of detection equipment, including lower fixed base, timer, test box, valve, still have rotary fixed establishment, vibration amplitude detection mechanism, control circuit, test box, valve, rotary fixed establishment, vibration amplitude detection mechanism install together, control circuit and timer install in component box, rotary fixed establishment includes bearing seat, fixed plate, screw rod, internal thread pipe, pressboard, vibration amplitude detection mechanism includes cylinder, adjusting lever, the utility model can be on the basis of fixed or non-fixed, to water pump no -load or simulate actual working condition carries out detection, still can through control circuit, timer and vibration amplitude detection mechanism effect, record unit time in water pump vibration data on the basis of corresponding setting vibration amplitude, the data obtained are more, can provide corresponding data support for improving water pump performance, and still can in the detection of water pump etc. when electric leakage, promptly remind the detection personnel to pay attention to safety, reduce the electric shock probability.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to a novel multifunctional water pump vibration testing device. Background Technology

[0002] Water pumps, including submersible pumps and self-priming pumps, are widely used in chemical, power, metallurgical, petroleum, and agricultural industries. The amplitude of pump vibration directly affects its normal operation; that is, stable operation is crucial for production efficiency and equipment lifespan. Specifically, excessive vibration can lead to equipment failure, production downtime, and increased maintenance costs. The main causes of excessive pump vibration include rotor imbalance, bearing failure, and misalignment between the pump shaft and drive shaft, among others.

[0003] To ensure that water pumps meet standards after production and maintenance, relevant departments need to test water pump vibration data. Current conventional techniques typically test the pump's vibration damping function without fixing the pump in place. Specifically, the less the pump deviates from its initial position after a period of operation, the smaller the vibration; conversely, the greater the deviation, the larger the vibration. While this method meets the testing needs to some extent, it has the following technical limitations: First, testing pump displacement without fixing the pump generally yields horizontal vibration data. When the pump vibration is predominantly vertical, it may not necessarily exhibit lateral displacement, or the lateral displacement may be small. Therefore, this method has a limited scope. Second, existing testing methods cannot provide data on the corresponding vibration amplitude per unit time, resulting in relatively limited data. Third, they cannot test vibration data under actual operating conditions (such as a submersible pump pumping water), thus failing to provide more theoretical data to support improvements in pump performance. Utility Model Content

[0004] To overcome the shortcomings of existing water pump testing work, which lacks a suitable testing device as described in the background art, this utility model provides a new type of multifunctional water pump vibration testing device that, under the combined action of relevant mechanisms, can perform vibration testing on self-priming pumps or submersible pumps under no-load and simulated actual working conditions. It can also record the vibration data of the water pump per unit time based on the corresponding set vibration amplitude, obtaining relatively more data, which can provide corresponding data support for improving the performance of water pumps. Furthermore, during the testing process, it can promptly alert the testing personnel to safety precautions in extreme situations or when the water pump leaks electricity, thus reducing safety risks.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A novel multifunctional water pump vibration testing device includes a lower fixed base, a timer, a test chamber, and valves. It also features a rotating fixing mechanism, a vibration amplitude detection mechanism, and a control circuit. The lower end of the test chamber is fixedly mounted on the upper end of the lower fixed base. The upper end of the test chamber has an open structure. The rotating fixing mechanism includes a fixed plate, a screw, an internally threaded pipe, and a pressure plate. A shaft is fixedly mounted on the lower part of one end of the fixed plate, and the shaft is rotatably mounted on one side of the upper end of the test chamber. The fixed plate has mounting holes, and the external side of the internally threaded pipe is fixedly mounted in the mounting holes. The screw and the internally threaded pipe are connected together by threads. A handle is fixedly mounted on the external side of the upper end of the screw, and the lower end of the screw is rotatably mounted on the upper end of the pressure plate. At least two valves are included. An inlet pipe and an outlet pipe are respectively installed on the upper and lower ends of one side of the test chamber. The two valves are mounted on one end of each valve. The inlet and outlet pipes are fixedly connected, and the other ends of the two valves are connected to the tap water pipe and the inlet pipe of the wastewater tank, respectively, via pipes. The vibration amplitude detection mechanism includes a cylinder and an adjusting rod. The upper end of the cylinder has a threaded seat A, and a support plate is fixedly installed on the outer side of the upper end of the cylinder. The adjusting rod has an external thread on its outer side and is installed together with the threaded seat A of the cylinder via the external thread. The cylinder contains mercury, and two metal plates are spaced apart at the lower end of the adjusting rod. A fixing plate A is fixedly installed on one end of the inner side of the test box, and the support plate at the upper end of the cylinder and the fixing plate A of the test box are fixedly installed together. The control circuit and timer are installed in the component box. The two metal plates are electrically connected to the two signal input terminals of the control circuit, and the signal output terminal of the control circuit is electrically connected to the signal input terminal of the timer.

[0006] Furthermore, the lower ends of the two metal plates are at a horizontal level, and the adjusting rod is made of insulating material.

[0007] Furthermore, the outer distance between the lower end of the fixing plate and the upper end of the test box.

[0008] Furthermore, the cylinder is made of transparent material, and the front end of the cylinder is marked with scale numbers from top to bottom.

[0009] Furthermore, the fixing plate has a fixing hole at the other end, and a screw seat is fixedly installed on the other side of the test box. The fixing hole of the fixing plate and the screw seat are connected by bolts.

[0010] Furthermore, the valve can also be a solenoid valve.

[0011] Furthermore, the control circuit includes an electrically connected resistor, a thyristor, an alarm, and a relay. The negative power input terminal of the relay is connected to the negative power input terminal of the alarm. One end of the resistor is connected to the control electrode of the thyristor, the cathode of the thyristor is connected to the positive power input terminal of the alarm, and the other end of the resistor is electrically connected to the right outer end of the test box via a wire.

[0012] Compared with existing technologies, the advantages of this invention are: This invention can perform vibration detection on self-priming pumps or submersible pumps under no-load or simulated actual working conditions on fixed or non-fixed foundations. Furthermore, through the control circuit, timer, and vibration amplitude detection mechanism, it can record the vibration data of the pump within a unit time based on a corresponding set vibration amplitude, obtaining relatively more data. This provides corresponding data support for improving pump performance. Moreover, during the detection process, it can promptly alert testing personnel to safety precautions in extreme situations or when the pump leaks electricity, reducing the chance of electric shock. In summary, this invention has good application prospects. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 , 3 This is a partial structural schematic diagram of the present invention.

[0016] Figure 4 This is the circuit diagram of this utility model. Detailed Implementation

[0017] Figure 1 , 2As shown in Figures 3 and 4, the novel multifunctional water pump vibration testing equipment includes a power module W1, a lower fixed base 1, a timer W2, a test box 2, and manual valves 31 and 32. It also has a rotation fixing mechanism, a vibration amplitude detection mechanism 5, and a control circuit 6. The lower end of the test box 2 is fixedly installed on the outer middle of the upper end of the lower fixed base 1, which is placed on the test platform. The upper end of the test box 2 has an open structure. The rotation fixing mechanism 4 includes bearing seats 40 and 41, a fixing plate 42, a screw 43, an internally threaded tube 44, and a pressure plate 45. A shaft 421 is fixedly installed on the lower middle of the left end of the fixing plate 42. The first set of bearing seats 40 is fixedly installed on the outer middle of the upper left end of the test box 2. The shaft 421 of the fixing plate is fixed... The first bearing housing 40 is fixedly installed inside the bearing inner ring; the fixing plate 42 has a mounting hole in the middle, and the inner middle outer side of the internal threaded tube 44 is fixedly installed in the mounting hole. The middle part of the screw 43 and the internal threaded tube 44 are connected together by threads. An operating handle 46 is fixedly installed on the outer side of the upper end of the screw 43. The lower end of the second bearing housing 41 is fixedly installed in the middle of the upper end of the pressure plate 45, and the lower end of the screw 43 is fixedly installed inside the bearing inner ring of the second bearing housing 41. There are two manual valves 31 and 32. A water inlet pipe 21 and a water outlet pipe 22 that communicate with its interior are respectively installed on the upper and lower ends of the left side of the test box 2. One end of the two valves 31 and 32 is fixed to the outer side of the water inlet pipe 21 and the water outlet pipe 22 respectively. The connection is made so that the other ends of the two valves 31 and 42 are connected to the water supply pipe and the inlet pipe of the wastewater tank respectively via pipes; the vibration amplitude detection mechanism includes a cylinder 51 and an adjusting rod 52. The upper and lower ends of the cylinder 51 are closed structures. There is a threaded seat A53 in the middle of the upper end of the cylinder 51. A support plate 511 is fixedly installed on the outer side of the upper end of the cylinder 51. There are fixing holes around the support plate 511. The outer side of the adjusting rod 52 has external threads. The adjusting rod 52 is installed together with the threaded seat A53 of the cylinder through the external threads. Liquid mercury 54 is inside the cylinder. There are two metal plates S1 (2 mm apart) on the left and right sides of the lower end of the adjusting rod 52. The wires connected to the upper ends of the two copper metal plates S1 are through the hollow The adjusting rod 52 extends outward to the upper end and is sealed with sealant (the wire extends outward from the opening A at the lower right outer end of the test box 2, and the opening A is sealed with sealant); a fixing plate A23 is fixedly installed in the middle of the inner right end of the test box 2. The fixing plate A23 has an opening in the middle and mounting holes A around it. The upper support plate 511 of the cylinder 51 is fixedly installed at the lower end of the fixing plate A23 of the test box, and the thread seat A53 and the upper end of the adjusting rod 52 are located outside the upper part of the opening; the power module W1, the control circuit 6, and the timer W2 are installed on the circuit board inside the component box 7 (the display interface of the timer W2 is located outside the opening at the front end of the component box), and the component box 7 is fixedly installed on the left front end of the lower fixing seat 1.

[0018] Figure 1 , 2As shown in Figures 3 and 4, the lower ends of the two metal plates S1 are at a horizontal height. The adjusting rod 52 is made of insulating plastic. The distance between the lower ends of the two metal plates and the upper end of the mercury 54 is [not specified]. The distance between the lower end of the fixing plate 42 and the upper outer edge of the test chamber 2 is [not specified]. The cylinder 51 is made of transparent plastic, and the front end of the cylinder 51 is marked with graduation numbers from top to bottom. There is a fixing hole in the middle of the right side of the fixing plate 42. A threaded seat 47 is fixedly installed in the middle of the upper right outer edge of the test chamber. A manual bolt 48 is rotatably installed in the fixing hole. The lower end of the manual bolt 48 is connected to the threaded seat 47 by a thread. Valves 31 and 32 can also be solenoid valves. The power input terminals of the two solenoid valves are connected in series with a power switch and to the power output terminals 3 and 4 of the power module W1 via wires. The control circuit includes a resistor R1, a silicon controlled rectifier (SCR) VS, an alarm M, and a relay J1, all connected via circuit board wiring. The negative power input terminal of relay J1 is connected to the negative power input terminal of alarm M. One end of resistor R1 is connected to the control electrode of SCR VS, and the cathode of SCR VS is connected to the positive power input terminal of alarm M. The power input terminals 1 and 2 of power module W1 are connected to the two poles of the 220V AC power supply via wires. The power output terminals 3 and 4 of power module W1 are connected to the power input terminals of the control circuit (SCR VS anode and alarm M negative power input terminal) and timer W2 (timer W2) via wires. The two metal plates S1 are connected to the two signal input terminals of the control circuit (SCR VS anode and relay J1 positive power input terminal) via wires. The signal output terminal of the control circuit (relay J1 control contact and normally open contact) is connected to the two contacts below the accumulator key L of timer W2 via wires. The other end of resistor R1 is connected to the right outer side of test box 2 via wires. Power module W1 is a finished product of AC 220V to DC 12V power module; relay J1 is DC12V; thyristor VS is MCR100-1; resistor R1 has a resistance of 470K; alarm B is a finished product of active continuous audible alarm of model XF12V; timer W2 is a timer of model H7ET, which has two power input terminals and one accumulator key L (corresponding to pins 3 and 4). When the two contacts of the accumulator key L are closed, timer W2 starts accumulating time. When the two contacts of the accumulator key L are open, timer W2 stops accumulating time (the original timing data is not lost, and the accumulated timing data of the timer is cleared by pressing the clear button of the timer after use).

[0019] Figure 1 , 2As shown in Figures 3 and 4, after the AC 220V power supply enters the power input terminal of the power module W1, the power module W1 outputs a stable DC 12V power supply at pins 3 and 4, which enters the power input terminal of the control circuit and the timer. When it is necessary to perform a no-load, unfixed test on a self-priming water pump or submersible pump 8, etc., the test procedure can be directly initiated (the water pump is located inside the test box); when it is necessary to perform a no-load, fixed test on a self-priming water pump or submersible pump 8, etc., the tester rotates the fixing hole of the fixing plate 42 onto the threaded seat 47, and then the tester rotates the bolt 48 clockwise. The lower end of the manual bolt 48 is connected to the threaded seat 49 via a thread, and the right end of the fixing plate is fixed to the upper right side of the test box; then, the tester rotates the handle 46 clockwise, and the screw 43 drives the pressure plate 45 to move down along the internal threaded tube 44, and the pressure plate 45 moves down. The pressure plate is pressed against the upper part of the self-priming pump or submersible pump 7. (Due to the action of the second bearing seat 41, after the lower end of the pressure plate contacts the upper part of the self-priming pump or submersible pump 8, the lower end of the pressure plate will only move downwards and will not rotate, thus providing a good fixing effect on the upper part of the self-priming pump or submersible pump 8.) After the test is completed (or when it is necessary to test the vibration data of the pump in non-fixed mode), the tester turns the handle 46 counterclockwise, and the screw 43 drives the pressure plate 45 to move upwards along the internal threaded pipe 44. The lower end of the pressure plate 45 is no longer pressed against the upper part of the self-priming pump or submersible pump 8. Alternatively, the upper part of the submersible pump 8 can be spaced apart. Then, the tester rotates bolt 48 counterclockwise. The lower end of the manual bolt 48 and the threaded seat 47 are no longer connected, and the right end of the fixing plate separates from the upper right side of the test box. Then, the fixing plate 42 is rotated a certain angle to remove the self-priming water pump or submersible pump 7 under test. When vibration testing of the submersible pump 7 under load is required, valve 31 is opened for a period of time. This allows tap water to enter the test box 2, submerging the submersible pump 7. During subsequent testing, the power switch of the submersible pump is turned on, allowing the vibration of the submersible pump to be tested during operation. Dynamic data; After the test is completed (power off the submersible pump), open valve 32, and the water in the test chamber will be discharged into the wastewater pool. Specifically, before conducting vibration testing under load on self-priming water pumps with general waterproof capabilities, after placing the pump in the test chamber, the testing personnel connect one end of each of the two rubber hoses to the inlet and outlet pipes of the self-priming water pump's volute, respectively, and the other end of each hose to the tap water pipe and the wastewater pipe of the wastewater pool, respectively. During subsequent testing, turn on the power switch of the self-priming water pump, and water will flow in and out, allowing the self-priming water pump to undergo vibration testing under load.

[0020] Figure 1 , 2As shown in Figures 3 and 4, before testing, the testing personnel adjust the adjustment rod 52 by rotating it upwards or downwards via the screw seat A53 according to the numbers on the front outer end of the cylinder (for example, by rotating the lower end of the copper metal plate and the mercury surface by 1.5 mm). This changes the distance between the lower ends of the two metal plates S1 and the upper end of the mercury 54 in the lower part of the cylinder. When the distance between the lower ends of the two metal plates S1 and the upper end of the mercury 54 in the cylinder is relatively far, the vibration threshold recorded by the subsequent timer W2 is relatively large. When the distance between the lower ends of the two metal plates S1 and the upper end of the mercury 54 in the cylinder is relatively close, the vibration threshold recorded by the subsequent timer W2 is relatively small. In actual testing, when the vibration amplitude of the water pump is relatively small (the vibration is transmitted to the mercury through the test chamber), and the distance between the lower ends of the two metal plates S1 inside the cylinder and the upper end of the mercury 54 liquid surface inside the cylinder is relatively large, the two metal plates S1 are not submerged by mercury. Therefore, relay J1 will not be energized and will not engage. Consequently, the two contacts of the accumulator key L of timer W2 will not close, and timer L will not accumulate. When the vibration amplitude of the water pump is relatively large, and the distance between the lower ends of the two metal plates S1 inside the cylinder and the upper end of the mercury 54 liquid surface inside the cylinder is relatively small, the two metal plates S1 will be submerged by mercury. Thus, the mercury will not... Within the time it takes for the two metal plates S1 to be energized, relay J1 will be energized and engaged. Since the two contacts under the accumulator button L of timer W2 are connected to the control contact and normally open contact of relay J1 respectively, timer W2 will accumulate the count during the time relay J1 is energized and engaged. After the subsequent test, the tester can intuitively understand the time when the vibration amplitude of the water pump exceeds the corresponding vibration threshold based on the accumulated count time of timer W2 (the longer the accumulated count time, the more frequently the water pump vibration amplitude exceeds the threshold, and vice versa). When water pump 8 is not leaking current, no leakage current flows through test box 2 into resistor R1. Therefore, the thyristor VS will not conduct, and the alarm M will not be energized or sound. When water pump 8 is leaking current, the leakage current flows through test box 2 and resistor R1, reducing the voltage and limiting the current, and enters the control electrode of thyristor VS. The thyristor VS is triggered and conducts, thus energizing the alarm M and emitting a loud sound, alerting the testing personnel that the water pump and test box are energized and urging them to exercise caution to avoid electric shock (the water pump power can be disconnected). Figure 1 , 2 As shown in Figures 3 and 4, through the above-described methods, this utility model can perform vibration testing on self-priming pumps or submersible pumps under no-load and simulated actual working conditions on fixed or non-fixed foundations. It can also record the vibration data of the pump within a unit time based on the corresponding set vibration amplitude, obtaining relatively more data, which can provide corresponding data support for improving the performance of the pump. Furthermore, during the testing process, it can promptly remind the testing personnel to pay attention to safety in extreme cases or when the pump leaks electricity, reducing the probability of electric shock for the testing personnel.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0022] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel multifunctional water pump vibration testing device, comprising a lower fixed base, a timer, a test chamber, and a valve, characterized in that, It also features a rotating and fixing mechanism, a vibration amplitude detection mechanism, and a control circuit. The lower end of the test box is fixedly mounted on the upper end of the lower fixed base. The upper end of the test box has an open structure. The rotating and fixing mechanism includes a fixing plate, a screw, an internally threaded tube, and a pressure plate. A shaft is fixedly mounted on the lower part of one end of the fixing plate, and the shaft is rotatably mounted on one side of the upper end of the test box. The fixing plate has mounting holes, and the outer side of the internally threaded tube is fixedly mounted in the mounting holes. The screw and the internally threaded tube are connected together by threads. A handle is fixedly mounted on the outer side of the upper end of the screw, and the lower end of the screw is rotatably mounted on the upper end of the pressure plate. There are at least two valves. An inlet pipe and an outlet pipe are respectively installed on the upper and lower ends of one side of the test box. One end of each valve is fixedly connected to the inlet pipe and the outlet pipe, respectively. The other end of the valve is connected to the water inlet pipe and the wastewater tank inlet pipe respectively via pipelines; the vibration amplitude detection mechanism includes a cylinder and an adjusting rod. The upper end of the cylinder has a threaded seat A, and a support plate is fixedly installed on the outer side of the upper end of the cylinder. The adjusting rod has an external thread on its outer side and is installed together with the threaded seat A of the cylinder via the external thread. The cylinder contains mercury, and there are two metal plates spaced apart at the lower end of the adjusting rod; a fixing plate A is fixedly installed on one end of the inner side of the test box, and the support plate at the upper end of the cylinder and the fixing plate A of the test box are fixedly installed together; the control circuit and the timer are installed in the component box, and the two metal plates are electrically connected to the two signal input terminals of the control circuit respectively. The signal output terminal of the control circuit and the signal input terminal of the timer are electrically connected.

2. The novel multifunctional water pump vibration detection equipment according to claim 1, characterized in that, The two metal plates are at the same horizontal level at their lower ends, and the adjusting rod is made of insulating material.

3. The novel multifunctional water pump vibration detection equipment according to claim 1, characterized in that, The outer spacing between the lower end of the fixing plate and the upper end of the test box.

4. The novel multifunctional water pump vibration detection equipment according to claim 1, characterized in that, The cylinder is made of transparent material, and the front end of the cylinder is marked with graduation numbers from top to bottom.

5. The novel multifunctional water pump vibration detection equipment according to claim 1, characterized in that, The fixing plate has a fixing hole at the other end, and a screw seat is fixedly installed on the other side of the test box. The fixing hole of the fixing plate and the screw seat are connected by bolts.

6. The novel multifunctional water pump vibration detection equipment according to claim 1, characterized in that, Solenoid valves can also be used.

7. The novel multifunctional water pump vibration detection equipment according to claim 1, characterized in that, The control circuit includes an electrically connected resistor, a thyristor, an alarm, and a relay. The negative power input terminal of the relay is connected to the negative power input terminal of the alarm. One end of the resistor is connected to the control electrode of the thyristor, the cathode of the thyristor is connected to the positive power input terminal of the alarm, and the other end of the resistor is electrically connected to the right outer end of the test box via a wire.

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