Internal oil supply blade angle regulator of horizontal water pump unit

Abstract

The utility model relates to an internal oil supply blade angle regulator of a horizontal water pump unit, and belongs to the technical field of water pump blade working condition regulation and control devices. The internal oil supply hydraulic adjusting device is composed of a blade adjusting device, a main shaft and an adjusting rod, a piston cavity and an oil tank cavity are formed in the blade adjusting device, a meshing worm injection pump, a change-over valve, a hydraulic locking valve and other components are arranged in the oil tank cavity, and movement of a piston and a piston rod is adjusted and controlled in an internal oil supply hydraulic adjusting mode. Therefore, the purpose of adjusting the angle of the horizontal water pump blade is achieved. The regulator is accurate in blade angle regulation, simple in structure, energy-saving, environment-friendly and convenient to maintain, and hydraulic oil circulates in the blade regulating device without leakage. The problems that the blade angle of an existing horizontal water pump is adjusted in a hydraulic station external oil supply mode, dynamic sealing points cannot be completely sealed during rotation, hydraulic oil leakage is serious, the working efficiency of the horizontal water pump is low, an adjusting device is large in size, and an adjuster is installed underwater and is inconvenient to maintain are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a horizontal water pump unit's internal oil supply vane angle regulator and belongs to the technical field of water pump vane working condition adjusting and controlling device. BACKGROUND

[0002] At present, the low-lift water pump used in the pump station in China is all axial flow pump, which is divided into vertical water pump and horizontal water pump. The horizontal water pump is generally used in the place with flat geographical position or slow water flow. The axial flow pump has the characteristics of low lift and large flow, and the narrow high efficiency area. The working lift of the axial flow pump slightly changes, which causes the working condition of the water pump to deviate from the high efficiency area, and the efficiency of the water pump decreases. The method for changing the characteristics of the axial flow pump in the prior art is to change the installation angle of the vane of the axial flow pump to adjust the working condition point, so that the working efficiency is improved. The adjustment of the vane angle of the horizontal axial flow pump in the prior art is all realized by using the hydraulic regulator, and the external oil supply of the hydraulic station is adopted, that is, two oil pipes are connected to the two ends of the piston in the water pump after the hole is punched on the main shaft, the piston in the water pump is driven to move left and right, and then the vane adjusting arm adjusts the vane angle. Due to the special structure of the external oil supply of the axial flow pump, a rotating dynamic sealing point is needed, so that the oil inlet pipe of the oil receiver cannot be completely sealed due to the limitation of the objective conditions, which causes the leakage in the actual use, the system pressure cannot reach the high oil pressure area, and the optimal adjustment of the vane angle cannot be realized.

[0003] On the other hand, when the external oil supply hydraulic system is used on the vertical water pump, the hydraulic oil supply system is in the vertical state, the vane angle regulator is installed at the top of the water pump shaft, only the thrust during the adjustment is borne during the work, and the torsion does not exist, so that the leakage of the hydraulic oil of the external oil supply hydraulic system is not particularly prominent. However, when the external oil supply hydraulic system is used on the horizontal water pump unit, the hydraulic oil supply system is in the horizontal state, the vane angle regulator is installed at the middle part between the water pump shaft and the motor shaft, not only the thrust during the adjustment is borne during the work, but also the torsion during the work of the unit is borne, so that the leakage of the hydraulic oil of the rotating dynamic sealing is particularly prominent, the leakage of the hydraulic oil is relatively serious, which not only pollutes the environment and causes the waste of energy, but also affects the stable operation of the unit due to the leakage, and the hydraulic system needs to be frequently pressurized, so that the start and stop of the hydraulic system are frequent.

[0004] In addition, the external oil supply needs to use the external oil supply hydraulic station, the oil cylinder, the piston in the water pump and other equipment are installed in the water pump runner chamber, and are in the long-term underwater working state. In addition, the vane angle regulator has a large size, the oil supply system equipment is complex, the installation of the vane angle regulator of the horizontal water pump unit is extremely inconvenient, the faults are many during the operation, the leakage of the hydraulic oil often occurs, the regulator is installed underwater, the maintenance is also extremely inconvenient, the maintenance workload is large, and the use cost is high. SUMMARY

[0005] The purpose of the utility model lies in, in view of the above prior art's insufficient, provide a kind of inner oil supply vane angle regulator of horizontal water pump unit, the regulator is by vane adjusting device, main shaft and adjusting lever constitute, and oil tank, internal meshing worm oil injection pump, safety valve, conversion valve and hydraulic locking valve are all sealed after being arranged in vane adjusting device, and are placed in the position of water on unit, adopt internal oil supply hydraulic pressure regulation, because no rotary seal exists, system hydraulic oil pressure can be greatly improved, the volume of hydraulic system can be greatly reduced, hydraulic oil circulates in vane adjusting device without leakage, so that regulator volume is small, simple structure, energy saving and environmental protection, convenient maintenance.Outside oil supply mode of the vane angle adjustment of existing horizontal water pump unit is solved, dynamic sealing point cannot be completely sealed when axial flow pump rotates, leading to system pressure cannot reach high oil pressure area work, cannot realize vane angle adjustment well, and volume is large, maintenance workload is big, and the problem of high use cost.

[0006] The utility model is through following technical scheme to realize above-mentioned purpose:

[0007] A kind of inner oil supply vane angle regulator of horizontal water pump unit, it is by vane adjusting device, main shaft and adjusting lever constitute, it is characterized in that: the left end of the vane adjusting device is elastically connected on the output end gear of speed reducer by connecting gear, the right end of vane adjusting device is fixedly sleeved in the left end of main shaft;The left end of the main shaft is fixed in the thrust bearing, and the right end of main shaft is fixedly connected with the installation worm casing left end of water pump vane by connecting flange b;The left end of the adjusting lever is fixedly connected with the connecting flange a in vane adjusting device by connecting flange c, and the right end of adjusting lever is fixedly connected with the left end of piston in water pump by connecting sleeve.

[0008] The vane adjusting device is by left shaft coupling, piston, piston rod, two snap rings a, two baffle a, snap ring b, baffle b, connecting bolt, right shaft coupling constitute, and left shaft coupling and right shaft coupling are connected by connecting bolt;The left shaft coupling is separated into piston chamber by two baffle a, and two baffle a is positioned by two snap rings a, and oil tank chamber is separated by baffle b and a baffle a, piston and piston rod are installed in piston chamber, one end of piston rod is fixed with piston, and the other end extends out of piston chamber and is made with connecting flange a;The right shaft coupling is made with connecting plate.

[0009] Permanent magnet drive motor, stepless speed change variable frequency module, internal meshing worm oil injection pump, safety valve, conversion valve and hydraulic locking valve are installed in the oil tank chamber in the left shaft coupling, the conversion valve is communicated with the piston chamber in the left end of piston by oil pipe, and the hydraulic locking valve is communicated with the piston chamber in the right end of piston by oil pipe;The internal meshing worm oil injection pump is installed on permanent magnet drive motor, and is communicated with piston chamber by oil pipe, and the stepless speed change variable frequency module is installed on permanent magnet drive motor;The safety valve is electrically connected with internal meshing worm oil injection pump.

[0010] The left end of the main shaft is fixedly connected with the connecting plate in the right shaft coupling through a connecting screw.

[0011] The adjusting rod is sleeved in the main shaft, the left end of the adjusting rod is movably fixed on the inner hole of the connecting shaft at the left end of the main shaft through a copper sleeve, and the right end of the adjusting rod is movably fixed on the inner hole of the connecting flange b at the right end of the main shaft through a copper sleeve.

[0012] The permanent magnet driving motor, the stepless speed change variable frequency module, the internal meshing worm oil injection pump, the safety valve, the conversion valve and the hydraulic locking valve are electrically connected with the collector ring.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The inner oil supply vane angle regulator of the horizontal water pump unit is composed of a vane adjusting device, a main shaft and an adjusting rod, a piston chamber and an oil tank chamber are arranged in the vane adjusting device through a partition plate and a snap ring, meshing worm oil injection pumps, safety valves, conversion valves and hydraulic locking valves and other components are arranged in the oil tank chamber, the horizontal movement of the piston and the piston rod is regulated in a manner of internal oil supply hydraulic regulation, so that the purpose of angle regulation of the horizontal water pump vane is achieved. The regulator is accurate in vane angle regulation, the working condition point of the horizontal water pump is at the best position, the working efficiency is high, the volume is small, the structure is simple, the hydraulic oil circulates in the vane adjusting device without leakage, energy saving and environmental protection, and all parts of the regulator are placed on the water, so that maintenance is convenient. The vane angle regulation of the existing horizontal water pump is carried out in a manner of external oil supply of the hydraulic station, the dynamic sealing point cannot be completely sealed during rotation, the leakage of the rotating dynamic sealing hydraulic oil cannot be solved, the leakage of the hydraulic oil is very serious, the system pressure cannot reach the high oil pressure area, so that the regulator cannot well realize accurate regulation of the vane angle, the working efficiency of the horizontal water pump is low, the regulation device is large in size, the regulator is installed underwater, maintenance workload is large, and the use cost is high. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structure schematic view of the inner oil supply vane angle regulator of the horizontal water pump unit.

[0016] Figure 2 It is a structure schematic view of the main shaft.

[0017] Figure 3 It is a structure schematic view of the adjusting rod.

[0018] Figure 4 It is a structure schematic view of the vane adjusting device.

[0019] Figure 5 It is a structure schematic view of the left shaft coupling device.

[0020] Figure 6 Fig. 1 is a structural schematic view of a left coupling device;

[0021] Figure 7 Fig. 2 is a structural schematic view of an inner oil supply vane angle regulator of a horizontal water pump unit installed on a horizontal water pump;

[0022] Figure 8 Fig. 3 is a structural schematic view of a horizontal water pump in the prior art.

[0023] In the figure: 1, vane adjusting device, 101, left coupling, 102, piston, 103, piston rod, 104, connecting flange a, 105, snap ring a, 106, partition a, 107, snap ring b, 108, partition b, 109, permanent magnet driving motor, 1010, stepless speed change variable frequency module, 1011, inner meshing volute oil pump, 1012, safety valve, 1013, switching valve, 1014, hydraulic locking valve, 1015, connecting gear, 1016, collector ring, 1017, connecting bolt, 1018, right coupling, 1019, connecting plate, 1020, connecting screw, 2, main shaft, 201, connecting shaft, 202, connecting flange b, 203, connecting key, 3, adjusting rod, 301, connecting flange c, 302, connecting sleeve, 4, copper sleeve, 5, water pump vane, 6, thrust bearing, 7, speed reducer, 8, output gear, 9, main motor, 10, inner piston of water pump, 11, vane adjusting arm. DETAILED DESCRIPTION

[0024] The utility model will be described further as follows. Figures 1-8 The utility model will be described further as follows.

[0025] The inner oil supply vane angle regulator of the horizontal water pump unit is formed by the vane adjusting device 1, the main shaft 2 and the adjusting rod 3, the left end of the vane adjusting device 1 is elastically connected to the output gear 8 of the speed reducer 7 through the connecting gear 1015, and the right end of the vane adjusting device 1 is fixedly sleeved on the left end of the main shaft 2; the connecting plate 1019 in the right coupling 1018 of the vane adjusting device 1 is fixedly connected with the left end of the main shaft 2 through the connecting screw 1020; the left end of the main shaft 2 is fixed in the thrust bearing 6, and the right end of the main shaft 2 is fixedly connected with the left end of the mounting volute of the water pump vane 5 through the connecting flange b 202; the left end of the adjusting rod 3 is fixedly connected with the connecting flange a 104 in the vane adjusting device 1 through the connecting flange c 301, and the right end of the adjusting rod 3 is fixedly connected with the left end of the inner piston 10 of the water pump through the connecting sleeve 302.

[0026] Further, the vane adjusting device 1 is composed of a left coupling 101, a piston 102, a piston rod 103, two clamping rings a 105, two partitions a 106, a clamping ring b 107, a partition b 108, a connecting bolt 1017, and a right coupling 1018. The left coupling 101 and the right coupling 1018 are connected and fixed by the connecting bolt 1017. The left coupling 101 is separated into a piston chamber by the two partitions a 106. The two partitions a 106 are positioned and fixed by the two clamping rings a 105, and separated into an oil tank chamber by the partition b 108 and one partition a 106. The piston chamber is provided with the piston 102 and the piston rod 103. One end of the piston rod 103 is fixed with the piston 102, and the other end extends out of the piston chamber and is provided with a connecting flange a 104. The right coupling 1018 is provided with a connecting plate 1019.

[0027] Further, the oil tank chamber in the left coupling 101 is provided with a permanent magnet drive motor 109, a stepless speed change frequency conversion module 1010, an internal meshing worm oil pump 1011, a safety valve 1012, a conversion valve 1013, and a hydraulic locking valve 1014. The conversion valve 1013 is communicated with the piston chamber at the left end of the piston 102 through an oil pipe. The hydraulic locking valve 1014 is communicated with the piston chamber at the right end of the piston 102 through an oil pipe. The internal meshing worm oil pump 1011 is installed on the permanent magnet drive motor 109 and communicated with the piston chamber through an oil pipe. The stepless speed change frequency conversion module 1010 is installed on the permanent magnet drive motor 109. The safety valve 1012 is electrically connected with the internal meshing worm oil pump 1011. The permanent magnet drive motor 109, the stepless speed change frequency conversion module 1010, the internal meshing worm oil pump 1011, the safety valve 1012, the conversion valve 1013, and the hydraulic locking valve 1014 are electrically connected with the current collector ring 1016.

[0028] Further, the adjusting rod 3 is sleeved in the main shaft 2 and can slide left and right in the main shaft 2. The left end of the adjusting rod 3 is movably fixed on the inner hole of the connecting shaft 201 at the left end of the main shaft 2 through a copper sleeve 4. The right end of the adjusting rod 3 is movably fixed on the inner hole of the connecting flange b 202 at the right end of the main shaft 2 through a copper sleeve 4.

[0029] The working process of the internal oil supply vane angle adjuster of the horizontal water pump unit is as follows:

[0030] The internal oil supply vane angle adjuster of the horizontal water pump unit is installed on the output gear 8 of the reducer 7 of the horizontal water pump through the vane adjusting device 1, and is fixed with the installation worm left end of the water pump vane 5 through the main shaft 2. The adjusting rod 3 is sleeved in the main shaft 2 and connected with the original water pump internal piston 10 of the horizontal water pump. The internal oil supply vane angle adjuster of the horizontal water pump unit rotates synchronously with the rotor body of the horizontal water pump during work.

[0031] When the horizontal water pump is running normally, the left and right piston chambers of the piston 102 cannot move left and right under the action of the hydraulic locking valve 1014, at this time the angle of the water pump blade 5 of the horizontal water pump is locked at a certain angle by the hydraulic locking valve 1014 and the safety valve 1012.

[0032] When the system (the original instruction system of the horizontal water pump) detects that the blade angle needs to be adjusted to the right, the system will issue an adjustment instruction, the collector ring 1016 connects the power supply of the permanent magnet drive motor 109, the permanent magnet drive motor 109 is powered on and starts to work, the high-pressure oil is pressed into the left piston chamber of the piston 102 through the internal meshing worm oil pump 1011, the piston 102 is pushed to the right, the oil in the right piston chamber of the piston 102 flows into the oil tank chamber, the piston 102 drives the adjusting rod 3 through the connecting flange a 104 on the piston rod 103 to make the piston 10 in the water pump move to the right, drives the blade adjusting arm 11 to adjust the angle of the water pump blade 5 to the right, that is, the positive angle adjustment of the water pump blade 5, and after the adjustment is completed, it is locked by the hydraulic locking valve 1014 and the safety valve 1012.

[0033] When the system detects that the blade angle needs to be adjusted to the left, the system will issue an adjustment instruction, the collector ring 1016 connects the power supply of the permanent magnet drive motor 109, the permanent magnet drive motor 109 is powered on and starts to work, the high-pressure oil is pressed into the right piston chamber of the piston 102 through the internal meshing worm oil pump 1011, the piston 102 is pushed to the left, the oil in the left piston chamber of the piston 102 flows into the oil tank chamber, the piston 102 drives the adjusting rod 3 through the connecting flange a 104 on the piston rod 103 to make the piston 10 in the water pump move to the left, drives the blade adjusting arm 11 to adjust the angle of the water pump blade 5 to the left, that is, the negative angle adjustment of the water pump blade 5, and after the adjustment is completed, it is locked by the hydraulic locking valve 1014 and the safety valve 1012.

[0034] The internal oil supply blade angle adjuster of the horizontal water pump set is small in size and simple in structure, is installed at the coupling between the speed reducer 7 on the main motor 9 and the middle part of the water pump, rotates synchronously with the rotor body, does not need to separately set a rotating sealing element, and will not leak due to rotation, improves the safety performance of the horizontal water pump blade angle synchronous adjuster, and solves the problems of the existing horizontal water pump adjuster, such as large volume, serious hydraulic oil leakage, environmental pollution, frequent pressure compensation due to leakage, frequent starting and stopping of the hydraulic system, and energy waste.

[0035] The above merely describes preferred embodiments of the present application, and the above examples do not limit the essential content of the present application in any form, and any simple modification or deformation of the above specific embodiments according to the technical essence of the present application by ordinary skilled in the art after reading the present application, and equivalent embodiments of equivalent changes or modifications by using the disclosed technical content, all still belong to the scope of the technical scheme of the present application, and do not deviate from the essence and scope of the present application.

Claims

1. An internal oil supply blade angle adjuster for a horizontal water pump unit, comprising a blade adjusting device (1), a main shaft (2), and an adjusting rod (3), characterized in that: The left end of the blade adjusting device (1) is elastically connected to the output gear (8) of the reducer (7) via a connecting gear (1015), and the right end of the blade adjusting device (1) is fitted and fixed to the left end of the main shaft (2); the left end of the main shaft (2) is fixed inside the thrust bearing (6), and the right end of the main shaft (2) is fixed to the left end of the mounting volute of the water pump blade (5) via a connecting flange b (202); the left end of the adjusting rod (3) is fixed to the connecting flange a (104) inside the blade adjusting device (1) via a connecting flange c (301), and the right end of the adjusting rod (3) is fixed to the left end of the piston (10) inside the water pump via a connecting sleeve (302).

2. The internal oil supply blade angle adjuster for a horizontal water pump unit according to claim 1, characterized in that: The blade adjusting device (1) consists of a left coupling (101), a piston (102), a piston rod (103), two retaining rings a (105), two partitions a (106), a retaining ring b (107), a partition b (108), a connecting bolt (1017), and a right coupling (1018). The left coupling (101) and the right coupling (1018) are connected by the connecting bolt (1017). The left coupling (101) is connected by two partitions a (106). The piston chamber is divided into two partitions a (106) and two retaining rings a (105). The oil tank chamber is divided into two partitions b (108) and one partition a (106). The piston chamber contains a piston (102) and a piston rod (103). One end of the piston rod (103) is fixed to the piston (102), and the other end extends out of the piston chamber and a connecting flange a (104) is made on it. A connecting plate (1019) is made inside the right coupling (1018).

3. The internal oil supply blade angle adjuster for a horizontal water pump unit according to claim 2, characterized in that: The oil tank chamber inside the left coupling (101) is equipped with a permanent magnet drive motor (109), a continuously variable transmission (CVT) module (1010), an internal meshing worm gear injection pump (1011), a safety valve (1012), a switching valve (1013), and a hydraulic locking valve (1014). The switching valve (1013) is connected to the piston chamber at the left end of the piston (102) via an oil pipe, and the hydraulic locking valve (1014) is connected to the piston chamber at the right end of the piston (102) via an oil pipe. The internal meshing worm gear injection pump (1011) is mounted on the permanent magnet drive motor (109) and is connected to the piston chamber via an oil pipe. The continuously variable transmission (CVT) module (1010) is mounted on the permanent magnet drive motor (109). The safety valve (1012) is electrically connected to the internal meshing worm gear injection pump (1011).

4. The internal oil supply blade angle adjuster for a horizontal water pump unit according to claim 1, characterized in that: The left end of the main shaft (2) is fixedly connected to the connecting plate (1019) inside the right coupling (1018) by connecting screws (1020).

5. The internal oil supply blade angle adjuster for a horizontal water pump unit according to claim 1, characterized in that: The adjusting rod (3) is fitted inside the main shaft (2). The left end of the adjusting rod (3) is movably fixed to the inner hole of the connecting shaft (201) at the left end of the main shaft (2) through the copper sleeve (4), and the right end of the adjusting rod (3) is movably fixed to the inner hole of the connecting flange b (202) at the right end of the main shaft (2) through the copper sleeve (4).

6. The internal oil supply blade angle adjuster for a horizontal water pump unit according to claim 3, characterized in that: The permanent magnet drive motor (109), continuously variable transmission and frequency converter module (1010), internal meshing worm gear oil injection pump (1011), safety valve (1012), switching valve (1013) and hydraulic locking valve (1014) are electrically connected to the slip ring (1016).

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