CN104265651A - Turning measurement device and method of swing degree of upper operating oil pipe of hydraulic blade all-adjustable water pump - Google Patents

Abstract

The invention provides a cranking measurement device and calculation method for operating the oil pipe swing on a hydraulic blade full-adjustment water pump. , the lower side of the outer oil pipe of the upper operating oil pipe, the upper side of the outer oil pipe of the upper operating oil pipe, and the upper side of the inner oil pipe of the upper operating oil pipe, and the four dial gauges are turned on the coupling layer of the pump station room, and the measurement records are on The 8 azimuths I, II, III, IV, V, VI, VII and VIII, which are 45° apart on the circumference of the operating tubing, are respectively transferred to the readings on the dial indicator, and the net swing of the three parts of the operating tubing is calculated in a list. The invention can reduce the swing of the upper operation oil pipe and the sealing gap between the copper sleeve of the matching hole of the oil receiver body, and ensure the optimal operation of the pump station under variable working conditions, the adjustment of the starting and stopping working conditions of the unit and the normal operation of the unit When the medium oil pressure maintains the blade angle, the blade adjustment mechanism operates safely and reliably, saving the operation and maintenance costs of the pump station, giving full play to the irrigation, drainage and water transfer functions of the pump station project, and ensuring the safety of people's lives and property.

Description

Measuring device and method for operating oil pipe swing bar on hydraulic vane full-adjustment water pump

technical field

The invention relates to a special tool and method for installation and adjustment of hydraulic machinery, in particular to a device and method for measuring a hydraulic blade full-adjustment water pump for operating an oil pipe swing bar.

Background technique

The large vertical water pump hydraulic blade full adjustment mechanism has the advantages of large adjustment force, high adjustment accuracy and reliable adjustment action. However, the installation process of the hydraulic blade adjustment mechanism is complicated and requires high installation accuracy. In order to form sufficient pressure and ensure reliable blade adjustment, it is required that the average unilateral clearance between the inner and outer oil pipes of the upper operating oil pipe and the copper bushing of the oil receiver body is only 0.10mm (the design bilateral clearance is 0.20mm), while ensuring the operation The oil pipe does not hold back, which requires that the swing of the inner and outer oil pipes of the upper operating oil pipe, the coaxiality of the copper bushing hole of the oil receiver body and the rotation center of the operating oil pipe be controlled within a small range. Therefore, during the installation of the unit, it is necessary to measure and adjust the swing of the inner and outer oil pipes of the operating oil pipe on the water pump, the levelness of the oil receiver body, and the coaxiality between the oil receiver body and the operation oil pipe.

Since the upper oil cylinder cover and the regulator base of the motor are already in place when the upper operating oil pipe is installed, it is impossible to install a special turning tool on the top of the thrust head of the motor to turn the rotating parts of the unit to measure the swing of the upper operating oil pipe. Therefore, in actual installation, a special tool as shown in Figure 1 is usually used to measure the swing of the operating oil pipe. The special tool is to set 3 guide bearings 9 and 3 thrust bearings 8 on the annular plate 7. The 3 guide bearings are fine-tuned by one of the guide bearings whose radial position can be fine-tuned, and are stuck on the side of the mouth of the regulator base. For radial positioning. 3 thrust bearings are supported on the oil receiver installation plane of the regulator base, and the plane has been adjusted horizontally. A dial gauge 6 is magnetically sucked on and below the ring plate of the special tool. The readings when the dial indicator probe is rotated to 8 directions around the operating oil pipe are used to calculate the swing of the operating oil pipe.

The above method has the following problems: on the one hand, the upper operation oil pipe swing measured and calculated by using the special tool for cranking and the dial gauge is only the swing caused by the inclination of the upper operation oil pipe, and cannot reflect the swing caused by the dislocation of the upper operation oil pipe; On the one hand, factors such as the non-verticality of the upper operating oil pipe itself, the unevenness of the regulator base itself, and the radial clearance of the guide bearing of the special tool will cause measurement errors in the swing of the upper operating oil pipe. Therefore, it is easy to cause the remaining swing of the upper operation oil pipe to be too large. If the normal sealing gap is used, it is easy to cause the upper operation oil pipe and the copper sleeve of the matching hole of the oil receiver body to burn and damage. If the sealing gap is selected to be large, sufficient operating oil pressure cannot be formed, and the vane cannot be adjusted.

Contents of the invention

The object of the present invention is to provide a barring measuring device and method capable of accurately measuring the swing of the operating oil pipe on a hydraulic blade full-adjustment water pump to overcome the above-mentioned shortcomings of the current operating oil pipe swing barring measurement device and method.

For realizing above object, technical scheme of the present invention is as follows:

Provided is a hydraulic vane full-adjustment water pump operating oil pipe swing barring measuring device, including a special tool for barring and four dial gauges. The special turning tool includes two symmetrical half ring plates, the two half ring plates are embraced on the motor shaft on the upper part of the motor shaft coupling, and the two half ring plates are divided into two halves by two connecting plate components. The annular plates are connected symmetrically to form a ring, the inner diameter of the ring is slightly larger than the diameter of the motor shaft, the outer diameter of the ring is slightly larger than the diameter of the flange of the motor shaft coupling, and the ring is provided with equal intervals along the circumference of the motor shaft. The 12 refined bolts and their fixing nuts on the coupling used to connect the water pump shaft coupling correspond to 12 round holes one by one. The ring is set on the fixing nut of the refined bolt through the round hole. Put a pressure ring on the fixing nuts of the 4 refined bolts on both sides of the plate assembly, and install the compression nut on the pressure ring to fix the ring on the upper surface of the motor shaft coupling; every two round holes on the upper surface of the ring A steel casing of the same specification is welded at equal intervals in the circumferential direction between them. The steel casing is used to insert a long steel pipe for barring; respectively on the upper side of the thrust head of the motor thrust bearing, the lower side of the outer oil pipe of the upper operating oil pipe, and the lower side of the upper operating oil pipe. Dial indicators A, B, C and D are installed on the upper side of the outer oil pipe and the upper side of the inner oil pipe of the upper operating oil pipe, and the four dial indicators are in the same orientation in the horizontal plane.

The connecting plate assembly includes two upper and lower connecting plates, two connecting bolts and two nuts, the two connecting plates are symmetrically arranged on the upper and lower surfaces of the half-type annular plate and straddle the butt joints thereof, the connecting plates Two circular holes are provided on the top, and circular holes are also provided at the corresponding positions of the two half-shaped annular plates. The connecting bolts pass through the lower connecting plate, the annular plate and the upper connecting plate successively, and then put on nuts and tighten them to fix.

The outer diameter of the ring is 100-200mm larger than the flange diameter of the motor shaft coupling.

The steel casing is 200-300mm long, and the inner and outer diameters are 75mm and 100mm respectively.

The outer diameter of the long steel pipe is smaller than the inner diameter of the steel casing, the inner diameter is 50mm, the thickness is 3.5mm, and the length is 1.5-2.0m.

The diameter of the circular hole opened on the annular plate is 3-5mm larger than the outer contour of the fixing nut of the refined bolt.

The inner diameter of the pressure ring is 2-4mm larger than the outer diameter of the refined bolt, and the outer diameter of the pressure ring is 20-30mm larger than the diameter of the round hole on the ring

There are 12 long steel pipes, and several of them are selected to be inserted into several steel sleeves distributed symmetrically in the circumferential direction according to requirements.

Provide a method for measuring the swing of the oil pipe on the hydraulic blade full adjustment water pump. The above-mentioned barring measuring device is used for measurement, and several symmetrical long steel pipes are inserted into the steel casing to be barred by manpower or a chain hoist. , cranking at 45°, stop, read, and then cranking at 45°, turn the 8 directions I, II, III, IV, V, VI, VII and VIII on the rotating part at 45° intervals to the horizontal plane At the four dial indicators in the same position, turn to the dial indicator at each position and stop for a moment and record the readings of each dial indicator at this time, among which the readings of the dial indicator A in the 8 directions are a ₁ , a ₂ , a ₃ , a ₄ , a ₅ , a ₆ , a 7 , a ₈ , the readings of dial indicator B in 8 directions are b ₁ , b ₂ , b _{3 ,} b ₄ , b ₅ , b ₆ , b ₇ , b ₈ , the readings of dial indicator C in 8 directions are c ₁ , c ₂ , c ₃ , c ₄ , c ₅ , c ₆ , c ₇ , c ₈ , and dial indicator D is in The readings of the 8 azimuths are d ₁ , d ₂ , d ₃ , d ₄ , d ₅ , d ₆ , d ₇ , and d ₈ .

After listing the readings of the dial indicator in the table, calculate the net swing of the three measuring positions of the lower part of the outer oil pipe of the upper operating oil pipe, the upper part of the outer oil pipe of the upper operating oil pipe and the upper part of the inner oil pipe of the upper operating oil pipe , the net swing values of the lower part of the outer oil pipe of the upper operating oil pipe in the four directions I, II, III, and IV are (b ₁ －b ₅ )－(a ₁ －a ₅ ), (b ₂ －b ₆ )－ (a ₂ －a ₆ ),(b ₃ －b ₇ )－(a ₃ －a ₇ ),(b ₄ －b ₈ )－(a ₄ －a ₈ ), the upper part of the outer oil pipe of the upper operation oil pipe is at I, The net swing values of the four azimuths Ⅱ, Ⅲ, and Ⅳ are (c ₁ －c ₅ )－(a ₁ －a ₅ ), (c ₂ －c ₆ )－(a ₂ －a ₆ ), (c ₃ －c ₇ )－(a ₃ －a ₇ ),(c ₄ －c ₈ )－(a ₄ －a ₈ ), the net swing of the upper part of the inner oil pipe of the upper operation oil pipe in the four directions of I, II, III and IV The degrees are (d ₁ －d ₅ )－(a ₁ －a ₅ ), (d ₂ －d ₆ )－(a ₂ －a ₆ ), (d ₃ －d ₇ )－(a ₃ －a ₇ ), (d ₄ -d ₈ ) - (a ₄ -a ₈ ).

The invention realizes the precise measurement and adjustment of the swing of the upper operating oil pipe of the large vertical water pump with full blade hydraulic adjustment, can reduce the swing of the upper operating oil pipe and the sealing gap between the upper operating oil pipe and the copper sleeve of the matching hole of the oil receiver body, and ensures The blade adjustment mechanism operates safely and reliably when the pump station is optimized for operation under variable working conditions, unit start-up and shutdown conditions are adjusted, and the oil pressure maintains the blade angle during normal operation of the unit, saving pump station operation and maintenance costs and giving full play to the pump station project irrigation, The functions of drainage and water diversion ensure the safety of people's lives and property.

Description of drawings

Fig. 1 is a schematic diagram of measuring the swing of the upper operating oil pipe by rotating the annular plate (the water pump shaft, the motor shaft and the operating oil pipe do not rotate) in the traditional method.

Fig. 2 is a schematic diagram of the swing angle of the operation oil pipe measured by the cranking rotating water pump shaft, the motor shaft and the operation oil pipe of the present invention.

Fig. 3 is the eight orientations of the special turning tool and rotating parts of the present invention.

Fig. 4a is A1-A1 sectional view among Fig. 3;

Fig. 4b is A2-A2 sectional view among Fig. 3;

Fig. 4c is a sectional view of A3-A3 in Fig. 3 .

In the figure, 1-upper operating oil pipe (inner oil pipe); 2-upper operating oil pipe (outer oil pipe); 3-intermediate spacer; 4-oil receiver body; 5-middle operating oil pipe; 6-indicator and magnetic gauge Seat; 7- special tool annular plate; 8- rolling thrust bearing; 9- rolling limit bearing; 10- oil receiver base; 11- rotating oil basin; 12- insulating backing plate; 13- insulating screw hole sleeve; Motor shaft; 15- copper bushing; 16- upper copper sleeve; 17- lower copper sleeve; 18- dial indicator A and magnetic base; 19- dial indicator B and magnetic base; 20- dial indicator C and Magnetic table base; 21- dial indicator D and magnetic table base; 22- split half snap ring; 23- thrust head; 24- guide bearing bush; 25- guide bearing bearing support bolt; ;28-lower support plate; 29-motor shaft coupling; 30-water pump shaft coupling; 31-water pump shaft; 32-refined bolts and nuts; 32-1-refined bolts; 32-2-refined bolts and nuts; 33-Split and half annular plate; 34-Steel casing; 35-Long steel pipe; 36-Clamping nut; 37-Clamping ring; 38-Connecting plate assembly; 38-3-Nut.

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing:

As shown in Figures 2 and 3, to make the special turning tool for the motor shaft coupling 29, first of all, master the flange diameters of the unit motor shaft coupling 29 and the water pump shaft coupling 30, and connect the motor shaft coupling The distribution circle diameter of the refined bolt 32-1 of the device 29 and the water pump shaft coupling 30, the diameter of the refined bolt 32-1 and the diameter of the refined bolt fixing nut 32-2. There are generally 12 refined bolts 32-1. Contrast the diameter of the motor shaft coupling 29 and the diameter of the motor shaft 14, make two identical half-type annular plates 33 with common steel plates, the inner diameter of the half-type annular plates 33 is slightly larger than the motor shaft 14, and the outer diameter is larger than the motor shaft The diameter of the flange of coupling 29 is 100-200mm larger, and the thickness of the steel plate must ensure that it has sufficient strength and rigidity to withstand the turning force. On the half-type annular plate 33 corresponding to the 12 refined bolts 32-1, 12 round holes are opened, the diameter of which is 3-5mm larger than the outer contour of the nut 32-2 of the refined bolts, for passing through during installation. The nut 32-2 of refined bolt makes it be pressed on the motor shaft coupling 29 back sides. Between every two adjacent round holes on the half-type annular plate 33, 12 steel sleeves 34 are welded symmetrically. 300mm, the inner and outer diameters are 75mm and 100mm respectively, and are used to insert the long steel pipe 35 for turning; the outer diameter of the long steel pipe 35 is smaller than the inner diameter of the steel casing 34, and the inner diameter is 50mm, the thickness is 3.5mm, and the length is 1.5-2.0m. After the half-type annular plate 33 is in place, it is assembled and connected into a whole with a connecting plate assembly 38, which is circular. The connecting plate assembly 38 comprises two connecting plates 38-1, two connecting bolts 38-2 and two nuts 38-3, and the two connecting plates 38-1 are symmetrically arranged on the upper and lower surfaces of the split ring plate 33 and Across its butt joints, two round holes are opened on the connecting plate 38-1, and round holes are also opened at the corresponding positions of the two half-shaped annular plates 33, and the connecting bolts 38-2 pass through the lower connecting plate in turn 38-1, the annular plate 33 and the upper connecting plate 38-1 are put on the nut 38-3 and tightened to fix. Make four pressure rings 37, pressure ring 37 inner diameters are 2～4mm larger than refined bolt 32-1 outer diameters, and pressure rings 37 outer diameters are larger than the round holes on the annular plate 33 by 20～30mm. Set four pressure rings 37 on the nuts 32-2 of the four refined bolts that are symmetrical on both sides of the ring plate 33, and use other nuts 36 to tighten and fix the refined bolts 32-1 to fix the annular plate 33 . Dial indicator A18, dial indicator B19, dial indicator C20, and dial indicator D21 are respectively installed on the upper side of the thrust head of the motor thrust bearing, the lower side of the outer oil pipe 2 of the upper operating oil pipe, and the upper side of the outer oil pipe 2 of the upper operating oil pipe And the upper side of the inner oil pipe 1 of the upper operating oil pipe, the dial gauge A head is pressed on the upper side of the thrust head of the motor thrust bearing to measure the translation value of the main shaft during the cranking process. The four dial indicators are in the same orientation in the horizontal plane.

As shown in Figure 3, when performing swing measurement, several long steel pipes 35 (such as 4, 6, and 12) among the 12 long steel pipes are inserted into the steel pipes distributed symmetrically in the circumferential direction according to the needs and the space conditions on site. In casing 34, use manpower or hand chain hoist to crank, crank at 45°, stop, take a reading, turn at 45° again, ..., turn the 8 directions on the rotating parts to the installed percentage in turn Stop at the meter, read and record. During barring, because the barring long steel pipe 35 is relatively long, the base support of the motor will hinder the long steel pipe 35 from rotating in all directions around 360°. Reinsert the steel casing 34 of unimpeded orientation, continue cranking, measure, record. Through cranking, measure and record the readings at the dial indicator at 8 directions of I, II, III, IV, V, VI, VII and VIII, which are separated by 45° on the circumference of the upper operating oil pipe, and calculate the outer oil pipe of the upper operating oil pipe. After subtracting the translation value measured by the dial indicator A from the full swing values of the three parts of the lower side of 2 (Table B), the upper side of the outer oil pipe 2 (Table C) and the upper side of the inner oil pipe 1 (Table D), we can get Accurate net swing of the upper operating tubing for analysis and processing.

When measuring the swing angle of the upper operating tubing, the reading of the dial indicator can be recorded according to Table 1 and the net swing angle can be calculated.

Table 1 Calculation table for measurement record of upper operation tubing swing Unit: mm

In Table 1, the first column and the three rows of the net swing are respectively the net swings of the three measuring positions of the upper operation oil pipe: the lower part of the outer oil pipe 2, the upper part of the outer oil pipe 2 and the upper part of the inner oil pipe 1 in the four directions of I, II, III and IV. value. Check and analyze whether the maximum net swing value of each part exceeds the value specified in the specification. If the net swing value is unqualified, analyze the reason and perform calculation.

Claims (10)

1. A hydraulic vane full-adjustment water pump operating tubing swing barring measuring device, characterized in that it includes a special tool for barring and four dial indicators, and the special tool for barring includes two symmetrical half-shaped rings Plate, two half-type annular plates are embraced on the motor shaft on the upper part of the motor coupling, and two symmetrical connecting plate components are used to connect the two annular plates to form a ring. The inner diameter of the ring is slightly larger than that of the motor. Shaft diameter, the outer diameter of the ring is slightly larger than the flange diameter of the motor shaft coupling, and 12 refined bolts and their The fixing nuts correspond to 12 round holes one by one, and the ring is set on the fixing nuts of the refined bolts through the round holes, and a pressure ring is placed on the fixing nuts of the four refined bolts that are symmetrical on both sides of the two connecting plate assemblies , the compression nut is installed on the pressure ring, and the ring is fixed on the upper surface of the motor shaft coupling; a steel sleeve of the same specification is welded at equal intervals in the circumferential direction between every two round holes on the upper surface of the ring, and the steel sleeve is used To insert a long steel pipe for barring; install dial indicator A on the upper side of the thrust head of the motor thrust bearing, the lower side of the outer oil pipe of the upper operating oil pipe, the upper side of the outer oil pipe of the upper operating oil pipe and the upper side of the inner oil pipe of the upper operating oil pipe , B, C and D, the four indicators are in the same position in the horizontal plane. 2. The hydraulic vane full-adjustment water pump operating oil pipe swing wheel measuring device according to claim 1, characterized in that: the connecting plate assembly includes two connecting plates, two connecting bolts and two nuts, two The connecting plate is symmetrically arranged on the upper and lower surfaces of the half-shaped annular plates and straddles the butt joints. Two round holes are set on the connecting plate, and round holes are also opened in the corresponding positions of the two semicircular annular plates. , the connecting bolts pass through the lower connecting plate, the ring plate and the upper connecting plate in turn, and then put on the nuts and tighten them to fix. 3. The hydraulic vane full-adjustment water pump operating oil pipe swing turning measuring device according to claim 1, characterized in that: the outer diameter of the ring is 100-200 mm larger than the flange diameter of the motor shaft coupling. 4. The hydraulic vane full-adjustment water pump operating oil pipe swing bar turning measuring device according to claim 1, characterized in that: the length of the steel casing is 200-300 mm, and the inner and outer diameters are 75 mm and 100 mm respectively . 5. The hydraulic vane full-adjustment water pump operating oil pipe swing bar turning measuring device according to claim 1, characterized in that: the outer diameter of the long steel pipe is smaller than the inner diameter of the steel casing, the inner diameter is 50 mm, the thickness is 3.5 mm, and the length is 1.5 mm. -2.0 m. 6. The hydraulic vane full-adjustment water pump operating oil pipe swing wheel measuring device according to claim 1, characterized in that: the diameter of the round hole opened on the annular plate is 3-5 larger than the outer contour of the fixed nut of the refined bolt mm. 7. The hydraulic vane full-adjustment water pump operating oil pipe swing turning measuring device according to claim 1, characterized in that: the inner diameter of the pressure ring is 2-4 mm larger than the outer diameter of the refined bolt, and the outer diameter of the pressure ring is larger than that of the ring The diameter of the round hole on the plate is 20-30 mm larger. 8. The large-scale vertical unit vertical coaxiality measurement and adjustment experimental device according to any one of claims 1-7, characterized in that: select several long steel pipes as required, and insert them into steel sleeves distributed symmetrically around the circumference tube. 9. A method for measuring the swing of the oil pipe on the hydraulic blade full-adjustment water pump, characterized in that: the measurement is carried out by the turning measuring device described in any one of claims 1-7, and it is symmetrical in the steel casing. Insert several long steel pipes, turn them with manpower or a chain hoist, turn them at 45°, stop, take a reading, and then turn them at 45°, turn the 8 directions Ⅰ, Ⅱ, Ⅲ, Ⅳ, Ⅴ, Ⅵ, Ⅶ and Ⅷ turn to the above-mentioned four dial indicators in the same position in the horizontal plane, stop and record the reading of each dial indicator at each position when turning to the dial indicator, Among them, the readings of dial indicator A in 8 directions are a ₁ , a ₂ , a ₃ , a ₄ , a ₅ , a ₆ , a ₇ , a ₈ , and the readings of dial indicator B in 8 directions are b ₁ , b ₂ , b ₃ , b ₄ , b ₅ , b ₆ , b ₇ , b ₈ , the readings of dial indicator C in 8 directions are c ₁ , c ₂ , c ₃ , c ₄ , c ₅ , c ₆ , c ₇ , c ₈ , the readings of dial indicator D in 8 directions are d ₁ , d ₂ , d ₃ , d ₄ , d ₅ , d ₆ , d ₇ , d ₈ . 10. The method according to claim 9, characterized in that: the reading of the dial gauge is listed in a table and then the upper operation oil pipe is calculated in the table. The lower part of the outer oil pipe of the upper operating oil pipe, the upper part of the outer oil pipe of the upper operating oil pipe, and the upper part of the inner oil pipe of the upper operating oil pipe. The swing values are respectively ( b ₁ - b ₅ ) - ( a ₁ - a ₅ ), ( b ₂ - b ₆ ) - ( a ₂ - a ₆ ), ( b ₃ - b ₇ ) - ( a ₃ - a ₇ ), ( b ₄ - b ₈ ) - ( a ₄ - a ₈ ), the net swing values of the upper part of the outer oil pipe of the upper operating oil pipe in the four directions of I, II, III, and IV are respectively ( c ₁ - c ₅ )－( a ₁ － a ₅ ), ( c ₂ － c ₆ )－( a ₂ － a ₆ ), ( c ₃ － c ₇ )－( a ₃ － a ₇ ), ( c ₄ － c ₈ )－ ( a ₄ - a ₈ ), the net swing values of the upper part of the inner oil pipe of the upper operating oil pipe in the four directions I, II, III, and IV are respectively ( d ₁ - d ₅ ) - ( a ₁ - a ₅ ), ( d ₂ - d ₆ ) - ( a ₂ - a ₆ ), ( d ₃ - d ₇ ) - ( a ₃ - a ₇ ), ( d ₄ - d ₈ ) - ( a ₄ - a ₈ ).