Device for measuring operating parameters of hydrostatic test pump

Abstract

The utility model relates to the technical field of water pumps, and provides a measuring device for operating parameters of a hydrostatic test pump, the hydrostatic test pump comprises a pump body and a plunger capable of reciprocating on the pump body, the measuring device comprises a laser reflecting plate, a laser sensor and a user terminal, and the laser reflecting plate is arranged on the plunger; the laser sensor is arranged on the pump body, is opposite to the laser reflecting plate and is used for measuring the moving distance of the plunger; the user terminal is in communication connection with the laser sensor. The non-contact measurement of the operating parameters of the hydraulic test pump can be realized, the measurement precision and the measurement safety are effectively improved, and the non-contact measurement device has the characteristics of simple structure, convenience in use, low cost and the like.

Description

Technical Field

[0001] The present application relates to the technical field of water pumps, and in particular provides a device for measuring operating parameters of a water pressure test pump. Background Art

[0002] In the prior art, for three-loop pressurized water reactor units in a nuclear power plant, a common hydraulic test pump is provided for every two units. When all 6.6kV AC power supplies inside and outside the plant of any unit are lost, the diesel generator set is started to provide 380V AC emergency power supply for the hydraulic test pump to supply water to the shaft seal of the reactor main pump. The water supply flow rate is required to be greater than 4.5m 3 / h to ensure the integrity of the water supply circuit. Therefore, the normal operation of the hydraulic test pump is an important barrier to ensure nuclear safety. According to the current periodic test standards of nuclear power plants, it is necessary to regularly test the plunger stroke, plunger action frequency, pump flow and other parameters of the hydraulic test pump during operation to ensure the safety of the hydraulic test pump.

[0003] At present, the operating parameters of the water pressure test pump are measured manually online. This traditional measurement method has problems such as low measurement accuracy and high safety risks. Utility Model Content

[0004] The purpose of the embodiment of the present application is to provide a device for measuring the operating parameters of a water pressure test pump, aiming to solve the problems of low measurement accuracy and high safety risks when the prior art uses traditional manual measurement methods to detect the operating parameters of a water pressure test pump.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] The present application provides a device for measuring operating parameters of a water pressure test pump, the water pressure test pump comprising a pump body and a plunger capable of reciprocating on the pump body, the measuring device comprising:

[0007] A laser reflection plate, disposed on the plunger;

[0008] A laser sensor is disposed on the pump body and is arranged opposite to the laser reflection plate, and is used to measure the moving distance of the plunger;

[0009] The user terminal is communicatively connected with the laser sensor.

[0010] Optionally, the measuring device further comprises:

[0011] A magnetic attraction component, through which the laser sensor is adsorbed on the pump body.

[0012] Optionally, the magnetic attraction component includes:

[0013] A bracket, on which the laser sensor is arranged;

[0014] A magnetic seat, the bracket is arranged on the magnetic seat, and the magnetic seat is magnetically connected to the pump body.

[0015] Optionally, the laser sensor is detachably connected to the bracket.

[0016] Optionally, the bracket is provided with a positioning groove, and flanges are formed on opposite sides of the bracket, and the flanges are located at the opening of the positioning groove. Connecting parts are provided on both sides of the laser sensor, and the laser sensor is arranged in the positioning groove, and the connecting parts are overlapped on the flanges one by one.

[0017] Optionally, the connecting portion is connected to the flange via a fastener.

[0018] Optionally, the bracket is provided with a connecting hole, and the magnetic seat is provided with a connecting column, and the connecting column is connected to the connecting hole.

[0019] Optionally, the plunger is coaxially provided with a plunger disk, and the laser reflection plate is detachably arranged on the plunger disk.

[0020] Optionally, an orthographic projection of the laser sensor in a direction toward the laser reflection plate is located on the laser reflection plate.

[0021] Optionally, the measuring device further comprises:

[0022] A connecting cable, through which the user terminal is connected to the laser sensor.

[0023] The beneficial effect of the device for measuring the operating parameters of the water pressure test pump provided by the present application is that: compared with the prior art, the present application can measure the moving distance of the plunger by setting a laser reflector on the plunger, and setting a laser sensor on the pump body and arranged relative to the laser reflector; the user terminal is connected to the laser sensor for communication, and the measured data can be received and processed. Therefore, the present application can realize non-contact measurement of the operating parameters of the water pressure test pump, effectively improve the measurement accuracy and safety during measurement, and has the characteristics of simple structure, convenient use, low cost, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 A structural assembly diagram of a device for measuring operating parameters of a water pressure test pump provided in an embodiment of the present application;

[0026] Figure 2 A structural assembly diagram of a laser sensor and a magnetic attraction component provided in an embodiment of the present application;

[0027] Figure 3 A schematic diagram of the structure of the bracket provided in the embodiment of the present application;

[0028] Figure 4 A schematic diagram of the structure of the magnetic base provided in the embodiment of the present application;

[0029] Figure 5 One of the schematic diagrams of the plunger stroke measurement principle provided in the embodiment of the present application;

[0030] Figure 6 The second schematic diagram of the plunger stroke measurement principle provided in the embodiment of the present application.

[0031] Among them, the reference numerals in the figure are:

[0032] 1. Pump body; 2. Plunger; 3. Laser reflector; 4. Laser sensor; 5. User terminal;

[0033] 6. Magnetic component; 601. Bracket; 602. Magnetic seat; 7. Positioning slot; 8. Opening;

[0034] 9. Flanging; 10. Connecting portion; 11. First fastening hole; 12. Second fastening hole; 13. Connecting hole;

[0035] 14. Connecting column; 15. Plunger plate; 16. Connecting cable. DETAILED DESCRIPTION

[0036] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0037] In the description of the embodiments of the present application, it needs to be understood that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0039] In the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0040] According to one embodiment of the present application, referring to Figure 1 As shown, the present application provides a device for measuring the operating parameters of a water pressure test pump. The water pressure test pump includes a pump body 1 and a plunger 2 that can reciprocate on the pump body 1. The measuring device includes: a laser reflection plate 3, a laser sensor 4 and a user terminal 5.

[0041] Among them, the laser reflection plate 3 is arranged on the plunger 2, and can move back and forth synchronously with the plunger 2; the laser sensor 4 is arranged on the pump body 1 and is arranged opposite to the laser reflection plate 3. The laser sensor 4 can emit laser to the laser reflection plate 3, and the laser reflection plate 3 reflects the laser emitted by the laser sensor 4 back so that the laser sensor 4 receives it, thereby measuring the moving distance of the plunger 2 in real time; the user terminal 5 is connected to the laser sensor 4 for communication, and can receive the data generated by the laser sensor 4 and analyze and process it.

[0042] In this embodiment of the present application, by using a combination of a laser sensor 4 and a laser reflector plate 3, non-contact measurement of the stroke of the plunger 2 can be achieved. Compared with the traditional online manual measurement method, the present application can significantly reduce measurement errors and safety risks, improve measurement accuracy, and also reduce interference with the operation of the water pressure test pump.

[0043] Furthermore, the laser sensor 4 can capture and feedback the movement information of the plunger 2 in real time, and the data is then transmitted to the user terminal 5 for analysis and processing. This process not only improves the immediacy of data collection, but also enables a faster and more accurate understanding of the working status of the water pressure test pump, which is conducive to timely discovery of potential problems and taking measures.

[0044] According to one embodiment of the present application, referring to Figure 1As shown, the measuring device further includes: a magnetic attraction component 6 , and the laser sensor 4 is adsorbed on the pump body 1 through the magnetic attraction component 6 .

[0045] In this embodiment of the present application, the design of mounting the laser sensor 4 on the pump body 1 by means of the magnetic attraction component 6 greatly simplifies the installation and removal process of the laser sensor 4. This means that when regular inspection, maintenance or replacement of the laser sensor 4 is required, the staff can complete the operation quickly, thereby improving maintenance efficiency.

[0046] The magnetic fixation method allows the laser sensor 4 to be flexibly positioned on the pump body 1, and the optimal monitoring position can be easily adjusted according to actual needs, so that the laser sensor 4 is aligned with the laser reflector 3, thereby ensuring the accuracy of the measurement data. This flexibility is particularly important for optimizing monitoring points and adapting to different models and specifications of hydraulic test pumps.

[0047] It can be understood that, compared with traditional bolt fixing or other mechanical fixing methods, the magnetic fixing method of the present application can avoid destructive operations such as drilling and welding on the pump body 1, thereby protecting the integrity of the water pressure test pump equipment.

[0048] According to one embodiment of the present application, referring to Figure 2 As shown, the magnetic component 6 includes: a bracket 601 and a magnetic seat 602, and the laser sensor 4 is arranged on the bracket 601; the bracket 601 is arranged on the magnetic seat 602, and the magnetic seat 602 is magnetically connected to the pump body 1.

[0049] In this embodiment of the present application, the bracket 601 serves as a conversion structure for interconnecting the laser sensor 4 and the magnetic seat 602, which can ensure that the laser sensor 4 is well fixed. The laser sensor 4 and the magnetic seat 602 are fixed together by the bracket 601, and then adsorbed and installed together at a suitable position on the pump body 1, ensuring that the entire laser sensor 4 is firmly positioned. This is crucial for obtaining accurate and reliable measurement data. This design enhances the stability and reliability of the entire measuring device.

[0050] According to one embodiment of the present application, the laser sensor 4 is detachably connected to the bracket 601 .

[0051] In this embodiment of the present application, the detachable connection feature of the laser sensor 4 means that when the laser sensor 4 fails or needs to be calibrated or upgraded regularly, the operator does not need to perform complicated disassembly and assembly of the entire measuring device, but only needs to simply remove the laser sensor 4 from the bracket 601 for repair or replacement. This can significantly shorten the repair time and reduce the maintenance cost.

[0052] According to one embodiment of the present application, referring to Figure 2 and Figure 3As shown, the bracket 601 is provided with a positioning groove 7, the top of the positioning groove 7 is provided with an opening 8, the opposite sides of the bracket 601 form flanges 9, and the flanges 9 are located at the opening 8 of the positioning groove 7, and connecting parts 10 are provided on both sides of the laser sensor 4, the laser sensor 4 is arranged in the positioning groove 7, and the connecting parts 10 are overlapped on the flanges 9 one by one.

[0053] In this embodiment of the present application, the design of the positioning groove 7 provides a precise installation position for the laser sensor 4, ensuring that the laser sensor 4 is in a preset optimal position each time it is installed, which is crucial to ensure the accuracy of the measurement data. The overlapping structure of the flange 9 and the connecting portion 10 further ensures the stability of the laser sensor 4.

[0054] During installation, the laser sensor 4 can be placed directly from the top into the positioning groove 7 of the bracket 601 through the opening 8. At this time, the connecting part 10 of the laser sensor 4 is overlapped with the flange 9 of the bracket 601 to complete the assembly without complicated operations, thereby improving the installation efficiency.

[0055] According to an embodiment of the present application, the connecting portion 10 is connected to the flange 9 via a fastener.

[0056] Specifically, a first fastening hole 11 is provided on the connecting portion 10, and a second fastening hole 12 is provided on the flange 9. Fastening is achieved by penetrating the first fastening hole 11 and the second fastening hole 12 with fasteners such as bolts.

[0057] Such a design can effectively improve the installation stability of the laser sensor 4, avoid the deviation or loosening caused by the vibration of the pump body 1 during operation, and thus ensure the measurement accuracy.

[0058] According to an embodiment of the present application, the laser sensor 4 is provided with a first clamping structure, and the bracket 601 is provided with a second clamping structure. One of the first clamping structure and the second clamping structure is a buckle, and the other is a slot, and the buckle and the slot are clamped.

[0059] In this embodiment of the present application, the design of the buckle and the slot allows for quick and intuitive assembly. The operator only needs to align the buckle and the slot and press lightly to achieve a firm connection between the laser sensor 4 and the bracket 601, which greatly simplifies the difficulty and time of on-site installation, enables quick disassembly and assembly of the laser sensor 4, and effectively improves the disassembly and assembly efficiency.

[0060] According to one embodiment of the present application, referring to Figure 3 and Figure 4 As shown, a connecting hole 13 is provided in the middle of the bracket 601 , and a connecting column 14 is provided on the magnetic seat 602 . The connecting column 14 is connected to the connecting hole 13 , thereby realizing the rapid assembly of the bracket 601 and the magnetic seat 602 .

[0061] According to one embodiment of the present application, referring to Figure 1 As shown, the plunger 2 is coaxially provided with a plunger disk 15, and the laser reflection plate 3 is detachably provided on the plunger disk 15. For example, the laser reflection plate 3 can be installed on the plunger disk 15 by means of clamping, bolt connection, etc.

[0062] In this embodiment of the present application, when the plunger 2 moves back and forth, the plunger disk 15 and the laser reflector 3 are synchronously driven to move, and the position of the plunger disk 15 can be measured in real time, thereby obtaining the moving distance of the plunger 2.

[0063] The detachable design of the laser reflector plate 3 allows it to be quickly and easily disassembled when the surface of the laser reflector plate 3 is contaminated, damaged, or needs to be replaced with a new model.

[0064] According to one embodiment of the present application, the orthographic projection of the laser sensor 4 in the direction toward the laser reflection plate 3 is located on the laser reflection plate 3. Preferably, the orthographic projection of the laser sensor 4 in the direction toward the laser reflection plate 3 is located at the center of the laser reflection plate 3.

[0065] Such a design can ensure that the laser emitted by the laser sensor 4 is accurately projected onto the laser reflector plate 3, and the laser reflector plate 3 can accurately reflect the laser back to the laser sensor 4, thereby ensuring the accuracy of the measured distance and improving the reliability of the measured data.

[0066] According to one embodiment of the present application, referring to Figure 1 As shown, the measuring device further includes: a connecting cable 16, through which the user terminal 5 is connected to the laser sensor 4, and the connecting cable 16 can transmit the data generated by the laser sensor 4 to the user terminal 5 to realize wired communication.

[0067] In this embodiment of the present application, wired communication can provide more stable data transmission than wireless communication in complex electromagnetic environments. In a special environment such as a nuclear power plant, there are generally a variety of electronic devices and strong electromagnetic fields. The use of the connecting cable 16 can effectively avoid signal interference and data packet loss, ensuring the continuity and integrity of the measurement data.

[0068] Of course, in some other examples, the user terminal 5 may also be connected to the laser sensor 4 through wireless technology.

[0069] The specific type of the user terminal 5 of the present application is not particularly limited, and it can be, for example, a mobile phone, a tablet computer, a desktop computer, or other devices, which can analyze and process the data generated by the laser sensor 4, and then display the relevant information through a human-computer interface.

[0070] In summary, the measuring device for the operating parameters of the water pressure test pump provided in the present application can effectively improve the measurement accuracy and safety of the operating parameters of the water pressure test pump during measurement, and has the characteristics of simple structure, easy use and low cost.

[0071] The device for measuring the operating parameters of the water pressure test pump provided in the present application is further described below with reference to a specific example.

[0072] Reference Figure 1-Figure 4 As shown, the measuring device for the operating parameters of the water pressure test pump provided in the embodiment of the present application mainly includes components such as a laser reflector plate 3, a laser sensor 4, a bracket 601, a magnetic seat 602, a connecting cable 16 and a mobile phone. During installation, first install the laser reflector plate 3 on the plunger disk 15, then use the bracket 601 to connect the laser sensor 4 to the magnetic seat 602, and then install the magnetic seat 602 in a suitable position of the pump body 1 to ensure that the laser sensor 4 can receive the laser reflected by the laser reflector plate 3; then use the connecting cable 16 to connect the laser sensor 4 to the mobile phone, and the mobile phone has a built-in measurement APP, so far all preparations have been completed. When the water pressure test pump is running, press the start measurement button on the mobile phone measurement APP, and then the relevant data can be automatically displayed in the mobile phone measurement APP, including the real-time moving distance of the plunger 2, the stroke of the plunger 2, the action frequency of the plunger 2 and the injection flow rate of the pump and other operating parameters.

[0073] The method of processing data by the mobile phone measurement APP in the embodiment of the present application is a conventional technical means in the art, generally including:

[0074] 1. Real-time moving distance of plunger 2

[0075] The moving distance of the plunger 2 is measured in real time by the laser sensor 4, and the measured data is then transmitted to the mobile phone.

[0076] 2. Stroke of plunger 2

[0077] like Figure 5 and Figure 6 As shown, since the laser sensor 4 can only return the distance between the object and the sensor in real time, and what needs to be measured in the test is the stroke of the plunger 2, that is, the distance between the plunger 2 at the extreme left position S1 and the extreme right position S2, the distance value of the laser sensor 4 cannot be used directly. In addition, the direction and position of the plunger 2 when it starts to move are uncertain and difficult to predict, which brings difficulties to the measurement of the stroke. Among them, the extreme left position and the extreme right position can be understood as the two extreme positions of the left and right reciprocating movement of the plunger 2.

[0078] When the plunger 2 starts to move, the following possibilities exist:

[0079] (1) Figure 5As shown, the plunger 2 starts to move to the right, and then reverses after reaching the extreme right position S2, moves to the left, and then reverses after reaching the extreme left position S1, and then moves to the right again, and the cycle repeats.

[0080] (2) Figure 6 As shown, the plunger 2 starts to move to the left, and then reverses after reaching the extreme left position S1, moves to the right, and then reverses after reaching the extreme right position S2, and then moves to the left again, and the cycle repeats.

[0081] According to the operating characteristics and production design standards of the water pressure test pump, the stroke of the plunger 2 is about 90 to 120 mm, and the time for one action is about 2 seconds. After 2 seconds, the plunger 2 completes a complete stroke. At this time, the movement direction of the plunger 2 can be ignored. The stroke of the plunger 2 can be obtained by processing the data returned by the laser sensor 4 within 2 seconds, calculating the maximum and minimum values ​​of the moving distance data within 2 seconds, and then subtracting the maximum value from the minimum value to obtain the stroke of the plunger 2.

[0082] 3. Action frequency of plunger 2

[0083] According to the characteristics of the movement of the plunger 2, theoretically, in a coordinate system with time as the horizontal axis and real-time distance as the vertical axis, the image formed is a sine function image, and the desired frequency is the inverse of the function period. However, due to factors such as leakage in the hydraulic system of the water pressure test pump and the inertia of the movement of the plunger 2, the actual curve is not completely a sine image, which brings difficulties to the actual frequency calculation.

[0084] At this time, the action of the plunger 2 can be judged by comparing the data of the laser sensor 4 before and after. For example, if the data of the laser sensor 4 is getting smaller and smaller, it can be considered that the plunger 2 is moving to the right. When the data of the laser sensor 4 is larger than the previous data, it can be judged that the plunger 2 has changed direction, and the time at this time is recorded as t1; after t1, the plunger 2 moves to the left, and the data of the laser sensor 4 is getting larger and larger, that is, the data of the laser sensor 4 is larger than the previous data; when the data of the laser sensor 4 starts to be smaller than the previous data, it means that the laser sensor 4 starts to change direction again and moves to the right, and the time at this time is recorded as t2.

[0085] Therefore, the duration of the plunger's movement from the starting position to the extreme right position S2, then to the extreme left position S1, and finally back to the starting position is T = 2 (t2-t1); then calculate the number of plunger movements within 1 minute, which is the plunger's movement frequency F = 60 / T. In practical applications, F is generally 35 to 50 times / min.

[0086] 4. Pump flow

[0087] The pump flow rate can be calculated based on the obtained plunger stroke and action frequency, and then compared with the specified standard value to draw a conclusion on whether the water pressure test pump is qualified. For example, when the flow rate is greater than 4.5m 3 / h, it is qualified, otherwise, it is unqualified.

[0088] The specific calculation process of the pump flow rate is a conventional technology in this field, and the calculation formula may be: Q=0.12ηAFS.

[0089] Where Q is the flow rate of the pump, in m 3 / h; η is the volumetric efficiency of the pump, which is generally taken as 95% in the test; A is the plunger area, for example, if the plunger diameter is 0.125m, the plunger area is 0.0123m 2 ; F is the plunger action frequency, unit is times / min; S is the plunger stroke, unit is mm.

[0090] The above are only preferred embodiments of the present application and are not intended to limit the embodiments of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A device for measuring operating parameters of a hydraulic test pump, the hydraulic test pump comprising a pump body and a plunger capable of reciprocating on the pump body, characterized in that: The measuring device comprises: A laser reflection plate, disposed on the plunger; A laser sensor is disposed on the pump body and is arranged opposite to the laser reflection plate, and is used to measure the moving distance of the plunger; The user terminal is communicatively connected with the laser sensor.

2. The device for measuring the operating parameters of a hydraulic test pump according to claim 1, characterized in that: The measuring device also includes: A magnetic attraction component, through which the laser sensor is adsorbed on the pump body.

3. The device for measuring the operating parameters of a hydraulic test pump according to claim 2, characterized in that: The magnetic attraction component comprises: A bracket, on which the laser sensor is arranged; A magnetic seat, the bracket is arranged on the magnetic seat, and the magnetic seat is magnetically connected to the pump body.

4. The device for measuring the operating parameters of a hydraulic test pump according to claim 3, characterized in that: The laser sensor is detachably connected to the bracket.

5. The device for measuring the operating parameters of a water pressure test pump according to claim 4, characterized in that: The bracket is provided with a positioning groove, and flanges are formed on opposite sides of the bracket, and the flanges are located at the openings of the positioning grooves. Connecting parts are provided on both sides of the laser sensor, and the laser sensor is arranged in the positioning groove, and the connecting parts are overlapped on the flanges one by one.

6. The device for measuring the operating parameters of a water pressure test pump according to claim 5, characterized in that: The connecting portion is connected to the flange via a fastener.

7. The device for measuring the operating parameters of a water pressure test pump according to claim 3, characterized in that: The bracket is provided with a connecting hole, and the magnetic seat is provided with a connecting column, and the connecting column is connected to the connecting hole.

8. The device for measuring the operating parameters of a hydraulic test pump according to claim 1, characterized in that: The plunger is coaxially provided with a plunger disk, and the laser reflection plate is detachably arranged on the plunger disk.

9. The device for measuring the operating parameters of a hydraulic test pump according to claim 1, characterized in that: The orthographic projection of the laser sensor in the direction toward the laser reflection plate is located on the laser reflection plate.

10. The device for measuring the operating parameters of a water pressure test pump according to any one of claims 1 to 9, characterized in that: The measuring device also includes: A connecting cable, through which the user terminal is connected to the laser sensor.

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