Assembly type comprehensive monitoring rack for operation state of water-jet propulsion pump

Abstract

The utility model discloses a comprehensive monitoring rack for the running state of a split mounting type water jet propulsion pump, which comprises an adjustable rack base and a plurality of sensors arranged on the adjustable rack base, the sensor comprises an axial displacement sensor assembly used for monitoring the displacement state of the impeller shaft, a rotating speed sensor assembly used for monitoring the rotating speed state of the impeller shaft, an orthogonal displacement sensor assembly used for monitoring the jumping state of the impeller shaft, and a three-way acceleration sensor used for monitoring the vibration state of the thrust bearing. And the temperature sensor is used for monitoring the temperature state of the thrust bearing. According to the utility model, comprehensive characteristic signals of vibration, temperature, displacement, rotating speed and the like of the water-jet propulsion pump are comprehensively monitored, the fault occurrence or hidden danger risk of the water-jet propulsion pump can be obviously reduced, and the testability and reliability of the water-jet propulsion pump are improved. The comprehensive monitoring rack can be installed on the water-jet propulsion pumps of various dimensions in a lossless mode through assembly of parts of different dimensions.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of assembled water-jet propulsion pump operating state comprehensive monitoring bench, belong to ship propulsion technical field. BACKGROUND

[0002] As a new type of power propulsion of ship, water-jet propulsion device has the characteristics of complex structure, harsh working environment and variable operating conditions, and its operating state directly determines whether the ship can sail normally. With the increasing application of water-jet propulsion device, the lack of state monitoring and fault diagnosis means is also increasingly prominent.

[0003] Most of the water-jet propulsion pumps used in the past for ship or vehicle applications do not have an online state monitoring system, and the operating state of the equipment relies solely on manual inspection, which cannot perform real-time state monitoring and fault diagnosis. Currently, the newly developed water-jet propulsion device is equipped with an online state monitoring system for the hydraulic system and control system, but there is still a lack of comprehensive state monitoring means for the water-jet propulsion pump, and the operating state information of the water-jet propulsion pump cannot be obtained in real time, which increases the risk of water-jet propulsion pump failure or hidden trouble.

[0004] Water-jet propulsion pump (such as Figure 1 ) is a typical bearing-supported impeller rotating mechanism, and the main fault types include bearing damage, impeller scratching, impeller shaft abnormal movement and jumping, impeller shaft fracture, etc. The characteristic signals include vibration, temperature, displacement, and rotational speed. Considering that various types of faults may occur simultaneously, it is necessary to use a comprehensive monitoring bench to monitor the physical quantities related to the characteristic signals of the water-jet propulsion pump online, and to obtain the operating state of the water-jet propulsion pump bearings, impellers, and impeller shafts in a timely manner. This is undoubtedly very important for the development of water-jet propulsion pump state monitoring technology and fault diagnosis technology. SUMMARY

[0005] The technical problem to be solved by the utility model is to provide a device that can comprehensively monitor the operating state of a water-jet propulsion pump.

[0006] To solve the above problems, the utility model provides an assembled water-jet propulsion pump operating state comprehensive monitoring bench, which comprises an adjustable bench base and a plurality of sensors arranged on the adjustable bench base. The sensors include an axial displacement sensor assembly for monitoring the movement state of the impeller shaft, a rotational speed sensor assembly for monitoring the rotational speed state of the impeller shaft, an orthogonal displacement sensor assembly for monitoring the jumping state of the impeller shaft, a three-axis acceleration sensor for monitoring the vibration state of the thrust bearing, and a temperature sensor for monitoring the temperature state of the thrust bearing.

[0007] Preferably, the adjustable gantry base comprises a base large flange, a sensor support flange one and a sensor support flange two arranged in sequence and in parallel, and the base large flange, the sensor support flange one and the sensor support flange two are connected by a plurality of axial support plates; in use, the base large flange is connected with a water jet propulsion pump bearing end cover, the sensor support flange two is connected with a water jet propulsion pump coupling, and a plurality of connecting holes are arranged on the base large flange, the water jet propulsion pump bearing end cover, the sensor support flange two and the water jet propulsion pump coupling.

[0008] More preferably, the axial displacement sensor assembly comprises an axial displacement sensor expansion washer and an axial displacement sensor arranged on an axial displacement sensor mounting bracket, and the axial displacement sensor mounting bracket is connected with the sensor support flange one; the mounting hole for fixing the axial displacement sensor on the axial displacement sensor mounting bracket is a waist-shaped through hole.

[0009] More preferably, the rotational speed sensor assembly comprises a rotational speed sensor arranged on a rotational speed sensor mounting bracket, and the rotational speed sensor mounting bracket is connected with the sensor support flange two; the mounting hole for fixing the rotational speed sensor on the rotational speed sensor mounting bracket is a waist-shaped through hole.

[0010] More preferably, the orthogonal displacement sensor assembly comprises an orthogonal displacement sensor arranged on an orthogonal displacement sensor mounting bracket, and the orthogonal displacement sensor mounting bracket is connected with the sensor support flange one; the mounting hole for the orthogonal displacement sensor on the orthogonal displacement sensor mounting bracket is a waist-shaped through hole.

[0011] Further, the orthogonal displacement sensor comprises two sensors arranged in an orthogonal manner and perpendicular to the axis of the water jet propulsion pump coupling.

[0012] More preferably, the three-way acceleration sensor and the temperature sensor are arranged on the base large flange by magnetic attraction or bolt connection.

[0013] More preferably, the base large flange and the axial support plate are respectively provided with a base large flange groove and an axial support plate rib plate which are inserted into each other.

[0014] More preferably, the axial displacement sensor mounting bracket and the sensor support flange one are both spliced from a plurality of sheets, and the connection portions of adjacent sheets are respectively provided with a hoop, and the two side hoops are connected by a hoop fastener.

[0015] More preferably, the sensor support flange one is provided with a plurality of mounting rails for fixing sensors, and the mounting rails are divided into two directions: a circumferential direction and a radial direction.

[0016] The utility model discloses online monitoring to the vibration, temperature, displacement, rotating speed and other characteristic signals of water jet propulsion pump, can grasp the operation state of water jet propulsion pump bearing, impeller, impeller shaft and other components in time, and each sensor completes the collection of the vibration, temperature, displacement, rotating speed and other characteristic signals of water jet propulsion pump, and the characteristic signal collected is transmitted to the online monitoring and fault diagnosis system to carry out state analysis and fault diagnosis. The sensor mounting support has different structures and mounting ports, and the sensor can be suitable for state monitoring of impeller shafts with different diameters, different axial positions and different radial positions, and can be installed on water jet propulsion pumps of various sizes without damage.

[0017] The utility model discloses the structure key point is: adjustable type platform base is installed in the propulsion pump bearing end cover through fastener, and each sensor mounting support adopts the plate assembly mode to provide the axial and radial adjustment function of sensor mounting position, and the orthogonal displacement sensor mounting support is Y type, and the installation position can be adjusted around the circumferential direction, and the U type sensor mounting port can be suitable for the state monitoring of sensor to impeller shafts with different diameters, and the rotating speed sensor mounting support is L type, and the installation position can be adjusted along the radial direction, and the waist type sensor mounting port can be suitable for the state monitoring of sensor to the different axial position of coupling, and the displacement sensor mounting support is Z type, and the installation position can be adjusted along the radial direction, and the waist type sensor mounting port can be suitable for the state monitoring of sensor to the different radial position of expansion gasket. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structural schematic diagram of water jet propulsion pump;

[0019] Figure 2 It is the exploded view of the assembly type water jet propulsion pump operation state comprehensive monitoring platform rack provided by the utility model;

[0020] Figure 3 It is the schematic diagram of the assembly type water jet propulsion pump operation state comprehensive monitoring platform rack provided by the utility model;

[0021] Figure 4 It is the schematic diagram of base big flange;

[0022] Figure 5 It is the front view of base big flange;

[0023] Figure 6 It is the schematic diagram of axial support plate;

[0024] Figure 7 It is the schematic diagram of base big flange groove and axial support plate rib plate;

[0025] Figure 8 , 9 It is the schematic diagram of sensor support flange one different angle;

[0026] Figure 10 ​Front view of sensor support flange one;

[0027] Figure 11 Schematic view of sensor support flange two;

[0028] Figure 12 Front view of sensor support flange two;

[0029] Figure 13 Front view of orthogonal displacement sensor mounting support;

[0030] Figure 14 Side view of Figure 13 ;

[0031] Figure 15 View of A direction in Figure 13 ;

[0032] Figure 16 Front view of axial displacement sensor mounting support;

[0033] Figure 17 Left view of Figure 16 ;

[0034] Figure 18 Right view of Figure 16 ;

[0035] Figure 19 Front view of axial displacement sensor expansion shim;

[0036] Figure 20 Front view of rotational speed sensor mounting support;

[0037] Figure 21 Left view of Figure 20 ;

[0038] Figure 22 Right view of Figure 20 . DETAILED DESCRIPTION

[0039] In order to make the utility model more obvious and easy to understand, the preferred embodiments are described in detail below with the help of the drawings.

[0040] EMBODIMENT

[0041] As Figures 1-16The utility model provides a kind of assembled water jet propulsion pump operating state comprehensive monitoring bench, it is characterized by, including adjustable bench pedestal 1 and multiple sensors on adjustable bench pedestal 1, the sensor includes the axial displacement sensor assembly for monitoring impeller shaft excursion state, the rotating speed sensor assembly for monitoring impeller shaft rotating speed state, the orthogonal displacement sensor assembly for monitoring impeller shaft runout state, the three-dimensional acceleration sensor for monitoring thrust bearing vibration state, the temperature sensor for monitoring thrust bearing temperature state.

[0042] The adjustable bench pedestal 1 includes base large flange 101, sensor support flange one 103 and sensor support flange two 104 arranged in parallel, and the base large flange 101, the sensor support flange one 103 and the sensor support flange two 104 are connected by multiple axial support plates 102; in use, the base large flange 101 is connected with the water jet propulsion pump bearing end cover 6, the sensor support flange two 104 is connected with the water jet propulsion pump coupling 5, and multiple connection holes are arranged on the base large flange 101, the water jet propulsion pump bearing end cover 6, the sensor support flange two 104 and the water jet propulsion pump coupling 5. The base large flange 101 and the axial support plate 102 are respectively provided with base large flange grooves and axial support plate ribs which are inserted into each other. The axial displacement sensor mounting bracket 2 and the sensor support flange one 103 are both made of multiple sheets, and the connection parts of adjacent sheets are respectively provided with hoops 107, and the two hoops 107 are connected by hoop fasteners 106. Multiple mounting rails for fixing sensors are arranged on the sensor support flange one 103, and the mounting rails are divided into two directions: circumferential direction and radial direction.

[0043] The axial displacement sensor assembly includes an axial displacement sensor expansion gasket 201 and an axial displacement sensor 702 arranged on the axial displacement sensor mounting bracket 2, and the axial displacement sensor mounting bracket 2 is connected with the sensor support flange one 103; the mounting hole for fixing the axial displacement sensor 702 on the axial displacement sensor mounting bracket 2 is a waist-shaped through hole.

[0044] The rotating speed sensor assembly includes a rotating speed sensor 703 arranged on the rotating speed sensor mounting bracket 3, and the rotating speed sensor mounting bracket 3 is connected with the sensor support flange two 104; the mounting hole for fixing the rotating speed sensor 703 on the rotating speed sensor mounting bracket 3 is a waist-shaped through hole.

[0045] The orthogonal displacement sensor assembly comprises an orthogonal displacement sensor 704 arranged on an orthogonal displacement sensor mounting bracket 4, the orthogonal displacement sensor mounting bracket 4 is connected with the sensor bracket flange one 103; the mounting hole for the orthogonal displacement sensor 704 on the orthogonal displacement sensor mounting bracket 4 is a waist-shaped through hole. The orthogonal displacement sensor 704 comprises two sensors arranged in an orthogonal manner and perpendicular to the axis of the water-jet propelling pump coupling 5.

[0046] The three-way acceleration sensor or the temperature sensor 701 is arranged on the base large flange 101 through magnetic attraction or bolt connection.

[0047] In the embodiment, the further preferred scheme is as follows:

[0048] One three-way acceleration sensor with a range of 500g is arranged on the base large flange mounting seat through magnetic attraction or bolt connection, and the vibration state of the thrust bearing is monitored in real time. The mounting mode is as shown in Figure 4 .

[0049] One temperature sensor with a range of 200℃ is arranged on the base large flange mounting seat through magnetic attraction or bolt connection, and the temperature state of the thrust bearing is monitored in real time. The mounting mode is as shown in Figure 4 .

[0050] One three-way acceleration sensor with a range of 100g is redundantly arranged on the base large flange, which is used for emergency use after the main three-way acceleration sensor is damaged, and the sensor can be periodically taken down and arranged on the impeller shell outside through magnetic attraction, so as to monitor the scraping state of the impeller.

[0051] Two orthogonal displacement sensors with a range of 4mm are arranged on the section of the sensor bracket flange one, the two sensors are arranged in an orthogonal manner and perpendicular to the coupling axis, the gap between the measuring end and the surface of the water-jet propelling pump coupling is 2mm, and the shaft runout state of the impeller is monitored in real time.

[0052] One axial displacement sensor with a range of 4mm is arranged on the section of the sensor bracket flange one, which is arranged perpendicular to the expansion pad along the axial direction, the gap between the measuring end and the surface of the expansion pad is 2mm, and the shaft runout state of the impeller is monitored in real time.

[0053] One rotation speed sensor with a range of 4mm is arranged on the section of the sensor bracket flange two, which is arranged perpendicular to the coupling axis, the gap between the measuring end and the surface of the bolt head is 2mm, and the rotation speed state of the impeller shaft is monitored in real time.

[0054] The base large flange is fixed on the bearing end cover of the water-jet propelling pump by the large flange fastener 105, the base large flange and the bearing end cover of the water-jet propelling pump are positioned through the stopper, and the hole on the base large flange should avoid the end cover fastener 601 and the large flange fastener 105.

[0055] Three axial support plates are slidably installed into the base flange pair corresponding card slots by end rib plates. The support plates are fixed in position when the rib plates are installed at the bottom of the card slots, as shown in Figure 6 .

[0056] The sensor support flange one is composed of a flange left side, a flange right side, a clamp and fasteners. The flange left side and the flange right side are clamped on the middle axial support plate by fasteners (clamp position B). The flange left side and the left clamp, and the flange right side and the right clamp are clamped on the left axial support plate and the right axial support plate by fasteners (clamp position A and clamp position C), respectively. The cross-sectional position of the sensor support flange one can be adaptively adjusted along the axial direction. The flange left side is provided with two circumferential installation tracks, and the flange right side is provided with three radial installation tracks, as shown in Figure 10 .

[0057] The orthogonal displacement sensor installation support is Y-shaped and is installed in the circumferential track of the flange left side by fasteners. The position can be adjusted around the circumferential direction to adjust the sensor measurement end to the appropriate position. Two orthogonal sensors are installed in the U-shaped opening of the support. By adjusting the positions of the two orthogonal sensors in the U-shaped opening, the support can be applied to the run-out monitoring of impeller shafts with different diameters.

[0058] The displacement sensor installation support is Z-shaped and is installed in the radial track of the flange right side by fasteners. The position can be adjusted along the radial direction to adjust the gap between the sensor measurement end and the expansion washer to the appropriate value, which is suitable for displacement monitoring of impeller shafts with different diameters. The displacement sensor is installed in the waist-shaped installation opening of the support. By adjusting the position of the displacement sensor in the waist-shaped hole, the support can be applied to the condition monitoring of expansion washers at different radial positions.

[0059] The sensor support flange two is similar in structure to the sensor support flange one. The sensor support flange two is fixed on the three axial support plates by clamping with fasteners at clamp positions D, E and F. The cross-sectional position of the sensor support flange two can be adaptively adjusted along the axial direction, and the flange right side is provided with three radial installation tracks.

[0060] The speed sensor installation support is L-shaped and is installed in the radial track of the flange right side by fasteners. The position can be adjusted along the radial direction to adjust the gap between the sensor measurement end and the coupling installation bolt to the appropriate value, which is suitable for speed monitoring of impeller shafts with different diameters. The speed sensor is installed in the waist-shaped installation opening of the support. By adjusting the position of the displacement sensor in the waist-shaped hole, the support can be applied to the speed monitoring of impeller shafts with different diameters.

Claims

1. A modular waterjet propulsion pump operating condition comprehensive monitoring test bench, characterized in that, The adjustable pedestal base (1) comprises a base large flange (101), a sensor support flange one (103) and a sensor support flange two (104) arranged in parallel in sequence, and the base large flange (101), the sensor support flange one (103) and the sensor support flange two (104) are connected through a plurality of axial support plates (102); in use, the base large flange (101) is connected with a bearing end cover (6) of a water-jet propelling pump, the sensor support flange two (104) is connected with a water-jet propelling pump coupling (5), and a plurality of connecting holes are arranged on the base large flange (101), the bearing end cover (6), the sensor support flange two (104) and the water-jet propelling pump coupling (5).

2. The assembled water-jet propelling pump operating state comprehensive monitoring bench of claim 1, wherein, The axial displacement sensor assembly comprises an axial displacement sensor expansion gasket (201) and an axial displacement sensor (702) arranged on an axial displacement sensor mounting bracket (2), and the axial displacement sensor mounting bracket (2) is connected with the sensor support flange one (103); the mounting hole for fixing the axial displacement sensor (702) on the axial displacement sensor mounting bracket (2) is a waist-shaped through hole.

3. The assembled water-jet propelling pump operation state comprehensive monitoring bench of claim 2, wherein, The rotating speed sensor assembly comprises a rotating speed sensor (703) arranged on a rotating speed sensor mounting bracket (3), and the rotating speed sensor mounting bracket (3) is connected with the sensor support flange two (104); the mounting hole for fixing the rotating speed sensor (703) on the rotating speed sensor mounting bracket (3) is a waist-shaped through hole.

4. The assembled water-jet propelling pump operation state comprehensive monitoring bench of claim 2, wherein, The orthogonal displacement sensor assembly comprises an orthogonal displacement sensor (704) arranged on an orthogonal displacement sensor mounting bracket (4), and the orthogonal displacement sensor mounting bracket (4) is connected with the sensor support flange one (103); the mounting hole for the orthogonal displacement sensor (704) on the orthogonal displacement sensor mounting bracket (4) is a waist-shaped through hole.

5. The assembled water-jet propulsive pump operating state comprehensive monitoring bench of claim 2, wherein, The orthogonal displacement sensor (704) comprises two sensors arranged in an orthogonal manner and perpendicular to the axis of the water-jet propelling pump coupling (5).

6. The assembled water-jet propelling pump operation state comprehensive monitoring bench of claim 5, wherein, The three-way acceleration sensor and the temperature sensor are arranged on the base large flange (101) through magnetic attraction or bolt connection.

7. The assembled water-jet propulsive pump operating state comprehensive monitoring bench of claim 2, wherein, The base large flange (101) and the axial support plate (102) are respectively provided with a base large flange groove and an axial support plate rib plate which are inserted into each other.

8. The assembled water-jet propelling pump operation state comprehensive monitoring bench of claim 2, wherein, The axial displacement sensor mounting bracket (2) and the sensor support flange one (103) are both spliced from a plurality of sheets, and the connecting portions of adjacent sheets are respectively provided with a hoop (107), and the two side hoops (107) are connected through a hoop fastener (106).

9. The assembled water-jet propelling pump operation state comprehensive monitoring bench of claim 2, wherein, ​ 10. The assembled water-jet propelling pump operation state comprehensive monitoring bench of claim 2, wherein, The flange one (103) of the sensor support is provided with a plurality of installation tracks for fixing sensors, and the installation tracks are divided into two directions: circumferential direction and radial direction.

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