Structure capable of hoisting air chamber and meeting transportation conditions for drilling pump with pressure of 1600 hp or above

Abstract

The utility model discloses a structure capable of hoisting an air chamber and guaranteeing transportation conditions of a drilling pump above 1600 hp, and relates to a drilling pump in the field of petroleum engineering equipment, in particular to the structure capable of hoisting the air chamber and guaranteeing the transportation conditions of the drilling pump above 1600 hp, which comprises a lifting cantilever hoisting seat, a bolt gasket group, a nut, a long screw rod, a lifting limiting plate and a cantilever, a drilling pump rack upper plane; the two nuts making contact with the lower plane of the lifting limiting plate rotate clockwise, the lifting limiting plate can ascend along the outer cylindrical face to push the cantilever to ascend, the two nuts making contact with the lower plane of the lifting limiting plate rotate anticlockwise, the lifting limiting plate can descend along the outer cylindrical face, and the cantilever descends along the outer cylindrical face under the self-weight condition. The air chamber can be dismounted and mounted without a crane, the requirements for the total width and the total height of drilling pump transportation are met, and the drilling cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of petroleum engineering equipment, in particular to a structure of a drilling pump with a capacity of more than 1600hp which can both hoist an air bag and ensure transportation conditions. Background Art

[0002] The useful function of installing an air bag on drilling pumps above 1600hp is that the mud pressure fluctuation of the drilling pump is small, which not only prolongs the service life of drilling pump parts, but also makes the drilling process parameters more reliable.

[0003] The harmful functions of drilling pumps above 1600hp after installing air bags are as follows: the drilling pump with air bags installed has larger external dimensions. When the drilling pump is transported, it cannot meet the requirements of the national standard GB1589-2016 "External dimensions, axle loads and mass limits of automobiles, trailers and automobile trains" (hereinafter referred to as the national standard) for a total height of 4m and a total width of 3m (only applicable to low-bed oilfield special operation vehicles).

[0004] The reason why the total width of the drilling pump exceeds the national standard total width of 3m for transportation is: the air bag with a rated volume of 75 liters and a maximum working pressure of 51.7MPa weighs 1300kg, is 1.2m high, and has a diameter of 0.78m. For example, if a 2400hp drilling pump is not equipped with an air bag, the total width is 2.8m. If the air bag is installed, the total width increases to 3.3m, which exceeds the national standard by 0.3m. Therefore, the air bag must be removed when transporting the drilling pump, and it needs to be reinstalled when it arrives at the new drilling team.

[0005] The reason why the total height of the drilling pump exceeds the total transport width of 4m stipulated by the national standard: For example, after a 2400hp drilling pump is installed with an air bag, the height of the highest point of the air bag from the bottom of the drilling pump is 2.71m. The capsule in the air bag is a consumable part and needs to be replaced frequently. When replacing the capsule, the air bag cover must be removed before replacing the capsule. In order to reduce drilling costs, the drilling pump is designed with a cantilever crane on the frame, and the cantilever crane is used to lift the air bag. A manual sports car and a manual hoist are added between the cantilever crane and the air bag. The manual sports car and the manual hoist have a certain height. Therefore, when the cantilever crane is used to lift the air bag, the height of the highest point of the cantilever crane from the bottom of the drilling pump is at least 3.62m. The drilling pump equipped with such a high cantilever crane is placed on the car when transferring to the drilling site. Even if a low-cargo platform car is used, the height of the cargo platform bearing surface from the ground is 1.15m, so the height of the highest point of the cantilever crane from the ground is 4.77m, which exceeds the national standard of 0.77m. In order to meet the national standard requirements, the cantilever crane must be dismantled before transportation and reinstalled at the new drilling site. The weight of the cantilever crane is more than 210kg.

[0006] Originally, a crane was required to dismantle and install the air bag and cantilever crane. At the drilling site, only a few drilling teams were equipped with cranes, and the drilling team equipped with cranes would increase the drilling cost. Now, in order to reduce the drilling cost, not only the drilling team site is not equipped with cranes, but also the large equipment moved and transported by the drilling team does not use cranes. Even some drilling teams in the United States are like this. In the United States, a 50-ton drilling pump is transported by a self-carrying device (also called a self-provided vehicle) on the car. The drilling pump is pulled diagonally onto the car for transportation. When the car is transported to the new well site, the 50-ton drilling pump is unloaded diagonally on the ground using the self-carrying device on the car.

[0007] In order to reduce drilling costs, it is an urgent issue to study the structure of drilling pumps above 1600hp that can both hoist air bags and ensure transportation conditions. Summary of the invention

[0008] The utility model aims to provide a structure for a drilling pump with a capacity of more than 1600hp which can not only hoist an air bag but also ensure transportation conditions.

[0009] The technical solution of the utility model is as follows:

[0010] The structure of the drilling pump of 1600hp or above in this embodiment can both hoist the air bag and ensure the transportation conditions, including a lifting cantilever hanger, a bottom plane of the bottom plate, a threaded through hole of the bottom plate, a fixing plate, a long groove, a threaded through hole of the fixing plate, an outer cylindrical surface, a top surface of the outer cylindrical surface, an upper stop point of the long groove, a bolt washer group, a nut, a long screw rod, a lifting limit plate, a threaded through hole of the lifting limit plate, a positioning hole, a lower plane, a limit screw, an upper plane, a cantilever, an inner cylindrical surface, a lower plane, an I-beam, a lower plane of the I-beam, a top surface of the inner cylindrical surface, an auxiliary support frame, a lower plane of the auxiliary support frame, a threaded through hole of the auxiliary support frame, a locking seat, and an upper plane of the auxiliary support frame Surface, screws, auxiliary support limit cover, lower plane of auxiliary support limit cover, locking ring, manual sports car, manual hoist, air bag cover, air bag body, air bag seat, air bag bracket, drilling pump group, upper plane of drilling pump frame, screw hole area of ​​the first cylinder on the frame plane, screw hole area of ​​the third cylinder on the frame plane, screw hole area of ​​the fifth cylinder on the frame plane, screw hole on the frame plane, simple air bag seat mounting frame, cylinder sleeve, discharge pipe, discharge liquid cylinder, suction liquid cylinder, first cylinder, second cylinder, third cylinder, fourth cylinder, fifth cylinder, total length of drilling pump group, total width of drilling pump group, total height of drilling pump group, distance between hanging workpiece and axis of outer cylindrical surface of lifting cantilever seat.

[0011] The lower plane of the bottom plate of the lifting cantilever hanger is connected to the upper plane of the drilling pump frame, and a bolt washer group is passed through the threaded through hole of the bottom plate and screwed into the screw hole of the upper plane of the frame to fix the lifting cantilever hanger and the upper plane of the drilling pump frame together;

[0012] The fixing plate is welded to the outer cylindrical surface;

[0013] Two long screw rods are connected to the fixed plate, and each long screw rod is clamped with a nut at the top and bottom to fix the fixed plate together;

[0014] First, screw two nuts onto each long screw rod;

[0015] The positioning hole of the lifting limit plate is connected to the outer cylindrical surface of the lifting cantilever suspension seat, and the two lifting limit plate threaded through holes of the lifting limit plate respectively pass through two long screw rods, and the limit screw of the lifting limit plate is screwed into the long groove of the lifting cantilever suspension seat, and the adjustment nut is in contact with the lower plane of the lifting limit plate;

[0016] The inner cylindrical surface of the cantilever is connected to the outer cylindrical surface of the lifting cantilever hanger, the lower plane of the cantilever is in contact with the upper plane of the lifting cantilever hanger, and the I-beam can rotate and rise and fall around the outer cylindrical surface of the lifting cantilever hanger;

[0017] The lifting limit plate can only be lifted up and down on the outer cylindrical surface, and cannot rotate around the outer cylindrical surface;

[0018] The two nuts contacting the lower plane of the lifting limit plate rotate clockwise, and the lifting limit plate will rise along the outer cylindrical surface, and the cantilever will be pushed up along the outer cylindrical surface by the rising of the lifting limit plate;

[0019] The two nuts contacting the lower plane of the lifting limit plate rotate counterclockwise, and the lifting limit plate will descend along the outer cylindrical surface, and the cantilever will descend along the outer cylindrical surface under its own weight.

[0020] The limit position of the cantilever descending along the outer cylindrical surface under its own weight is that the top surface of the outer cylindrical surface contacts the top surface of the inner cylindrical surface.

[0021] The limit position of the cantilever rising along the outer cylindrical surface is that the upper dead point of the long slot contacts the limit screw.

[0022] The lower plane of the auxiliary support frame is connected to the upper plane of the drilling pump frame, and screws are passed through the threaded through holes of the auxiliary support frame and screwed into the screw holes of the upper plane of the frame to fix the auxiliary support frame and the upper plane of the drilling pump frame together;

[0023] The lower plane of the auxiliary support limit cover is connected to the upper plane of the auxiliary support frame, and the two locking rings are connected to the two locking seats respectively, so that the auxiliary support limit cover is connected and fixed to the auxiliary support frame.

[0024] The auxiliary support frame and auxiliary support limit cover are very light, with the two parts weighing only 8.7kg together, so one person can easily move them.

[0025] The bottom plane of the lifting cantilever hanger can be connected to the upper plane of the drilling pump frame at three locations, namely, the first cylinder screw hole area on the frame plane, the third cylinder screw hole area on the frame plane, and the fifth cylinder screw hole area on the frame plane. In the three threaded areas, the positions of the screw holes on the frame plane are the same size, all corresponding to the threaded through holes of the bottom plate, and both can be screwed into the screw holes on the frame plane with a bolt washer group through the threaded through holes of the bottom plate to fix the lifting cantilever hanger and the upper plane of the drilling pump frame together; similarly, the lower plane of the auxiliary support frame of the auxiliary support frame 7 can also be connected to the upper plane of the drilling pump frame at three locations, namely, the first cylinder screw hole area on the frame plane, the third cylinder screw hole area on the frame plane, and the fifth cylinder screw hole area on the frame plane. In the three threaded areas, the positions of the screw holes on the frame plane are the same size, all corresponding to the threaded through holes of the auxiliary support frame, and both can be screwed into the screw holes on the frame plane with a screw through the threaded through holes of the auxiliary support frame to fix the auxiliary support frame and the upper plane of the drilling pump frame together.

[0026] The cantilever on the lifting cantilever hanger is connected with the auxiliary support frame and the auxiliary support limit cover. Specifically, the upper plane of the auxiliary support frame is in contact with the lower plane of the cantilever, the lower plane of the auxiliary support limit cover is connected with the upper plane of the auxiliary support frame, and the two locking rings are respectively connected to the two locking seats. The auxiliary support limit cover is connected and fixed to the auxiliary support frame. This connection method is required during the transportation process of the drilling pump. This connection method is also used when it is necessary to move the position of the lifting cantilever hanger. Since the auxiliary support frame is very light, one person can install the auxiliary support frame in any position of the first cylinder screw hole area, the third cylinder screw hole area and the fifth cylinder screw hole area on the frame plane. Before moving the lifting cantilever hanger, first connect the cantilever with the auxiliary support frame and the auxiliary support limit cover, then loosen the bolt washer group connecting the lifting cantilever hanger and the upper plane of the drilling pump frame, and then move the lifting cantilever hanger in parallel to any position of the first cylinder screw hole area, the third cylinder screw hole area and the fifth cylinder screw hole area on the frame plane, and then use the bolt washer group to fasten the lifting cantilever hanger and the upper plane of the drilling pump frame together. This structure makes it safe, reliable and effortless to move the position of the lifting cantilever hanger.

[0027] When the capsule in the air bag needs to be replaced, the air bag cover needs to be lifted open. In this case, the lifting cantilever hanger is installed in the first cylinder screw hole area on the frame plane. The distance between the hanging workpiece and the axis of the outer cylindrical surface of the lifting cantilever hanger is only half of the cantilever length, and the bending moment of the lifting cantilever hanger and the cantilever is reduced.

[0028] When the air bag needs to be disassembled, the air bag is hoisted in the following situation: the lifting cantilever hanger is installed in the first cylinder screw hole area on the frame plane, and the distance between the hanging workpiece and the axis of the outer cylindrical surface of the lifting cantilever hanger is only half of the cantilever length, and the bending moment of the lifting cantilever hanger and the cantilever is reduced.

[0029] If some customers need to install the air bag on the fifth cylinder screw hole area on the frame, they only need to install the lifting cantilever hanger on the fifth cylinder screw hole area on the frame.

[0030] According to the national standard GB1589-2016 "Overall dimensions, axle loads and mass limits of automobiles, trailers and automobile trains" (hereinafter referred to as the national standard), the restriction requirements for transporting oilfield equipment with low-bed oilfield special operation vehicles are that the total height shall not exceed 4m and the total width shall not exceed 3m.

[0031] If a drilling pump with an air bag is installed, an air bag with a rated volume of 75 liters and a maximum working pressure of 51.7 MPa is used, the air bag weighs 1300 kg, is 1.2 m high, and has a diameter of 0.78 m. The total width of the drilling pump group with the air bag installed is 3.3 m, which exceeds the national standard by 0.3 m. Therefore, the air bag must be removed and reinstalled when the new drilling team arrives.

[0032] According to the total height of the drilling pump group that can be hoisted by the air bag cantilever crane is 3.62m. When the drilling pump is transferred to the drilling site, the drilling pump is placed on a car. Even if a low cargo platform car is used, the height of the cargo platform bearing surface from the ground is 1.15m. In this way, the highest point of the cantilever crane is 4.77m from the ground, which exceeds the national standard by 0.77m. In order to meet the national standard requirements, the cantilever crane must be dismantled before transportation and the cantilever crane must be reinstalled on the new drilling pump. The weight of the lifting cantilever crane (including cantilever hanger seat, bolt washer group, nut, long screw rod, lifting limit plate, cantilever) is more than 210kg.

[0033] Use a lifting cantilever crane to dismantle the air bag cover, air bag body, air bag seat, and air bag bracket and hoist them onto the drilling pump frame, and then lower the lifting cantilever crane to the lowest position. In this way, the total width of the drilling pump unit is reduced by 0.5m from the original 3.3m (greater than the original excess of 0.3m), and the total height of the drilling pump unit is reduced by 0.82m from the original 3.62m (greater than the original excess of 0.77m), thus meeting the minimum requirements. After the drilling pump unit is transported to the new drilling site, use the lifting cantilever crane to re-lift and install the air bag cover, air bag body, air bag seat, and air bag bracket.

[0034] The lifting cantilever hanger is installed in the first cylinder screw hole area on the plane of the frame to hoist the fifth cylinder liner which is farthest away from the lifting cantilever hanger (because the maximum weight of the cylinder liner will not exceed 100kg, it can be hoisted at a long distance). That is to say, under normal circumstances, the lifting cantilever hanger is installed in the first cylinder screw hole area on the plane of the frame to meet the drilling pump hoisting requirements.

[0035] The discharge pipe of the drilling pump, as well as the discharge cylinder and suction cylinder below the discharge pipe are not wearing parts, but they still need to be replaced, so there is still a need for hoisting. When hoisting the discharge pipe, discharge cylinder, and suction cylinder, it is necessary to move the lifting cantilever hanger to the place closest to the hoisting discharge pipe, discharge cylinder, and suction cylinder, so that the distance between the hoisted workpiece and the axis of the outer cylindrical surface of the lifting cantilever seat is minimized, and the force bending moment of the lifting cantilever hanger and cantilever is reduced. The design of the lifting cantilever hanger and cantilever is based on the maximum lifting weight bending moment. The smaller the maximum bending moment, the lower the cost of the lifting cantilever hanger and cantilever. For example, according to the hoisting bending moment in this example, the long lead screw can use the standard M27 specification, a standard part with a length of 1m and a mechanical property level of 8.8, and the price of 1 lead plus 2 nuts is only RMB 38.

[0036] The above structure can meet the requirements of total width and total height for drilling pump transportation without the need for a crane, thereby reducing drilling costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 - Exploded view of lifting jib crane;

[0038] Figure 2 - Front view of the lifting jib crane at its lowest position;

[0039] Figure 3-Figure 2 AA section view;

[0040] Figure 4-Figure 2 A top view of

[0041] Figure 5-Figure 4 BB cross-sectional view;

[0042] Figure 6-Figure 2 Oblique view of

[0043] Figure 7 - Front view of the lifting cantilever crane at the highest position;

[0044] Figure 8-Figure 7 AA section view and partial C enlarged view of AA section view;

[0045] Figure 9-Figure 7 A top view of

[0046] Figure 10-Figure 9 BB cross-sectional view;

[0047] Figure 11-Figure 7 Oblique view of

[0048] Fig.12 - Exploded view of auxiliary support for the hoisting frame;

[0049] Fig.13 -Oblique view of the auxiliary support of the hanging frame after assembly;

[0050] Figure 14-16 Three views of the air bag cover for hoisting drilling pumps above 100hp and a partial enlarged view of A in the left view;

[0051] Figure 15-16 Three-view and oblique view of the hoisting air package of drilling pumps above 100hp;

[0052] Figure 16-16 Three views of the hoisting air bag of the drilling pump above 100hp and the lowest position of the lifting cantilever crane to meet the transportation conditions;

[0053] Figure 17-16 Three-view and oblique view of the 5th cylinder liner of the drilling pump above 100hp;

[0054] Figure 18-16 Three views and oblique views of the discharge pipe of a drilling pump with a capacity of more than 100 hp.

[0055] 1-lifting cantilever hanger, 1.1-bottom plane of bottom plate, 1.2-threaded through hole of bottom plate, 1.3-fixed plate, 1.4-long slot, 1.5-threaded through hole of fixed plate, 1.6-outer cylindrical surface, 1.7-top surface of outer cylindrical surface, 1.8-top dead point of long slot, 2-bolt washer set, 3-nut, 4-long screw rod, 5-lifting limit plate, 5.1-threaded through hole of lifting limit plate, 5.2-positioning hole, 5.3-lower plane , 5.4-limiting screw, 5.5-upper plane, 6-cantilever, 6.1-inner cylindrical surface, 6.2-lower plane, 6.3-I-beam, 6.4-lower plane of I-beam, 6.5-top surface of inner cylindrical surface, 7-auxiliary support frame, 7.1-lower plane of auxiliary support frame, 7.2-threaded through hole of auxiliary support frame, 7.3-locking seat, 7.4-upper plane of auxiliary support frame, 8-screw, 9-auxiliary support limiting cover, 9. 1- auxiliary support limit cover lower plane, 9.2- locking ring, 10- manual sports car, 11- manual hoist, 12.1- air bag cover, 12.2- air bag body, 12.3- air bag seat, 12.4- air bag bracket, 13- drilling pump group, 13.1- drilling pump frame upper plane, 13.2- frame upper plane first cylinder screw hole area, 13.3- frame upper plane third cylinder screw hole area, 13.4- frame upper plane The fifth cylinder screw hole area, 13.5-plane screw hole on the frame, 14-simple air bag seat mounting frame, 15-cylinder sleeve, 16-discharge pipe, 17-discharge liquid cylinder, 18-suction liquid cylinder, Ⅰ-first cylinder, Ⅱ-second cylinder, Ⅲ-third cylinder, Ⅳ-fourth cylinder, Ⅴ-fifth cylinder, H1-total length of drilling pump group, H2-total width of drilling pump group, H3-total height of drilling pump group, L1-the distance between the hanging workpiece and the axis of the outer cylindrical surface of the lifting cantilever seat. DETAILED DESCRIPTION

[0056] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations. For the convenience of description, a high-power high-pressure drilling pump of more than 2200hp is used as an example.

[0057] The implementation methods of the present invention are not limited to the following embodiments (for the convenience of description, a 2400hp drilling pump is used as an example), and various changes made without departing from the purpose of the present invention are within the protection scope of the present invention.

[0058] See also Figures 1 to 18 The structure of the drilling pump of 1600 hp or more in this embodiment can not only hoist the air bag but also ensure the transportation conditions, including a lifting cantilever hanger 1, a bottom plate lower plane 1.1, a bottom plate threaded through hole 1.2, a fixing plate 1.3, a long slot 1.4, a fixing plate threaded through hole 1.5, an outer cylindrical surface 1.6, a top surface 1.7 of the outer cylindrical surface, an upper stop point 1.8 of the long slot, a bolt washer set 2, a nut 3, a long screw rod 4, a lifting limit plate 5, a lifting limit plate threaded through hole 5.1, a positioning hole 5.2, a lower plane 5.3, a limit screw 5.4, an upper plane 5.5, a cantilever 6, an inner cylindrical surface 6.1, a lower plane 6.2, an I-beam 6.3, an I-beam lower plane 6.4, an inner cylindrical surface top surface 6.5, an auxiliary support frame 7, an auxiliary support frame lower plane 7.1, an auxiliary support frame threaded through hole 7.2, a locking seat 7.3, and an auxiliary support frame upper plane 7. 4, screw 8, auxiliary support limit cover 9, lower plane of auxiliary support limit cover 9.1, locking ring 9.2, manual sports car 10, manual hoist 11, air bag cover 12.1, air bag body 12.2, air bag seat 12.3, air bag bracket 12.4, drilling pump group 13, drilling pump frame upper plane 13.1, frame upper plane first cylinder screw hole area 13.2, frame upper plane third cylinder screw hole area 13.3, frame upper plane fifth cylinder screw hole area 13.4, frame upper plane screw hole 13.5, simple air bag seat mounting frame 14, cylinder sleeve 15, discharge pipe 16, discharge liquid cylinder 17, suction liquid cylinder 18, first cylinder Ⅰ, second cylinder Ⅱ, third cylinder Ⅲ, fourth cylinder Ⅳ, fifth cylinder Ⅴ, drilling pump group total length H1, drilling pump group total width H2, drilling pump group total height H3, distance L1 between hanging workpiece and outer cylindrical axis of lifting cantilever seat.

[0059] See also Figure 1 to Figure 7 , Fig.17 :

[0060] The bottom plate lower plane 1.1 of the lifting cantilever hanger 1 is connected to the upper plane 13.1 of the drilling pump frame, and the bolt washer group 2 is passed through the bottom plate threaded through hole 1.2 and screwed into the upper plane screw hole 13.5 of the frame to fix the lifting cantilever hanger 1 and the upper plane 13.1 of the drilling pump frame together;

[0061] The fixing plate 1.3 is welded to the outer cylindrical surface 1.6;

[0062] Two long screw rods 4 are connected to the fixing plate 1.3. Each long screw rod 4 is clamped with a nut 3 at the top and bottom to fix the fixing plate 1.3 together.

[0063] Two nuts 3 are first screwed onto each long screw rod 4 respectively;

[0064] The positioning hole 5.2 of the lifting limit plate 5 is connected to the outer cylindrical surface 1.6 of the lifting cantilever suspension seat 1, and the two lifting limit plate threaded through holes 5.1 of the lifting limit plate 5 respectively pass through two long screw rods 4, and the limiting screw 5.4 of the lifting limit plate 5 is screwed into the long groove 1.4 of the lifting cantilever suspension seat 1, and the adjusting nut 3 is in contact with the lower plane 5.3 of the lifting limit plate 5;

[0065] The inner cylindrical surface 6.1 of the cantilever 6 is connected to the outer cylindrical surface 1.6 of the lifting cantilever suspension seat 1, the lower plane 6.2 of the cantilever 6 is in contact with the upper plane 5.5 of the lifting cantilever suspension seat 1, and the I-beam 6.3 can rotate and rise and fall around the outer cylindrical surface 1.6 of the lifting cantilever suspension seat 1;

[0066] The lifting limit plate 5 can only be lifted up and down on the outer cylindrical surface 1.6, and cannot rotate around the outer cylindrical surface 1.6;

[0067] The two nuts 3 contacting the lower plane 5.3 of the lifting limit plate 5 rotate clockwise, and the lifting limit plate 5 rises along the outer cylindrical surface 1.6, and the lifting limit plate 5 pushes the cantilever 6 to rise along the outer cylindrical surface 1.6;

[0068] The two nuts 3 contacting the lower plane 5.3 of the lifting limit plate 5 rotate counterclockwise, and the lifting limit plate 5 will descend along the outer cylindrical surface 1.6, and the cantilever 6 will descend along the outer cylindrical surface 1.6 under its own weight.

[0069] See also Figure 2 , Figure 3 The limit position of the cantilever 6 descending along the outer cylindrical surface 1.6 under its own weight is that the top surface 1.7 of the outer cylindrical surface contacts the top surface 6.5 of the inner cylindrical surface.

[0070] See also Figure 7 , Figure 8 The limit position of the cantilever 6 rising along the outer cylindrical surface 1.6 is that the long slot upper dead point 1.8 contacts the limit screw 5.4.

[0071] See also Fig.12 , Fig.13 , Fig.14 :

[0072] The auxiliary support frame lower plane 7.1 of the auxiliary support frame 7 is connected to the upper plane 13.1 of the drilling pump frame, and the screws 8 are screwed through the threaded through holes 7.2 of the auxiliary support frame and screwed into the screw holes 13.5 of the upper plane of the frame to fix the auxiliary support frame 7 and the upper plane 13.1 of the drilling pump frame together;

[0073] The auxiliary support limit cover lower plane 9.1 of the auxiliary support limit cover 9 is connected to the auxiliary support frame upper plane 7.4, and the two locking rings 9.2 are respectively connected to the two locking seats 7.3, so that the auxiliary support limit cover 9 is connected and fixed to the auxiliary support frame 7.

[0074] The auxiliary support frame 7 and the auxiliary support limit cover 9 are very light, and the two parts together weigh only 8.7 kg, so one person can easily move them.

[0075] See also Fig.14 , there are three places where the bottom plate lower plane 1.1 of the lifting cantilever hanger 1 is connected to the upper plane 13.1 of the drilling pump frame, namely the frame upper plane first cylinder screw hole area 13.2, the frame upper plane third cylinder screw hole area 13.3 and the frame upper plane fifth cylinder screw hole area 13.4 of the drilling pump frame upper plane 13.1. In the three threaded areas, the frame upper plane screw holes 13.5 are of the same size and correspond to the bottom plate threaded through holes 1.2. The bolt washer group 2 can be used to pass through the bottom plate threaded through holes 1.2 and screwed into the frame upper plane screw holes 13.5 to fix the lifting cantilever hanger 1 and the drilling pump frame upper plane 13.1 together; similarly, There can also be three connection positions between the auxiliary support frame lower plane 7.1 of the auxiliary support frame 7 and the upper plane 13.1 of the drilling pump frame, namely the frame upper plane first cylinder screw hole area 13.2, the frame upper plane third cylinder screw hole area 13.3 and the frame upper plane fifth cylinder screw hole area 13.4 of the drilling pump frame upper plane 13.1. In the three threaded areas, the positions of the frame upper plane screw holes 13.5 are the same size, all corresponding to the auxiliary support frame threaded through holes 7.2, and the screws 8 can be used to pass through the auxiliary support frame threaded through holes 7.2 and screwed into the frame upper plane screw holes 13.5 to fix the auxiliary support frame 7 and the drilling pump frame upper plane 13.1 together.

[0076] See also Fig.16In the oblique view, the cantilever 6 on the lifting cantilever hanger 1 is connected with the auxiliary support frame 7 and the auxiliary support limit cover 9. Specifically, the upper plane 7.4 of the auxiliary support frame is in contact with the lower plane 6.2 of the cantilever 6, the lower plane 9.1 of the auxiliary support limit cover is connected with the upper plane 7.4 of the auxiliary support frame, and the two locking rings 9.2 are respectively connected with the two locking seats 7.3. The auxiliary support limit cover 9 is connected and fixed to the auxiliary support frame 7. This connection method is required in the transportation process of the drilling pump. This connection method is also used when it is necessary to move the position of the lifting cantilever suspension seat 1. Because the auxiliary support frame 7 is very light, one person can install the auxiliary support frame 7 at any position of the first cylinder screw hole area 13.2 on the frame plane, the third cylinder screw hole area 13.3 on the frame plane, and the fifth cylinder screw hole area 13.4 on the frame plane. Before moving the lifting cantilever suspension seat 1, first connect the cantilever 6 with the auxiliary support frame 7 and the auxiliary support limit cover 9, then loosen the bolt washer group 2 connecting the lifting cantilever suspension seat 1 and the upper plane 13.1 of the drilling pump frame, and then move the lifting cantilever suspension seat 1 in parallel to any position of the first cylinder screw hole area 13.2 on the frame plane, the third cylinder screw hole area 13.3 on the frame plane, and the fifth cylinder screw hole area 13.4 on the frame plane, and then use the bolt washer group 2 to fasten the lifting cantilever suspension seat 1 and the upper plane 13.1 of the drilling pump frame together. Such a structure makes it safe, reliable and effortless to move the position of the lifting cantilever suspension seat 1.

[0077] See also Fig.14 When it is necessary to replace the capsule (not shown) in the air bag body 12.2, the air bag cover 12.1 needs to be lifted open. In this case, the lifting cantilever hanger 1 is installed in the first cylinder screw hole area 13.2 on the frame plane, and the distance L1 between the hanging workpiece and the axis of the outer cylindrical surface of the lifting cantilever seat is only half of the length of the cantilever 6, and the force and bending moment of the lifting cantilever hanger 1 and the cantilever 6 are reduced.

[0078] See also Fig.15 When the air bag 12.2 needs to be disassembled, the situation of hoisting the air bag is as follows: the lifting cantilever hanger 1 is installed in the first cylinder screw hole area 13.2 on the frame plane, and the distance L1 between the hanging workpiece and the axis of the outer cylindrical surface of the lifting cantilever seat is only half of the length of the cantilever 6, and the force and bending moment of the lifting cantilever hanger 1 and the cantilever 6 are reduced.

[0079] If some customers need to install the air bag on the fifth cylinder screw hole area 13.4 on the frame plane, they only need to install the lifting cantilever hanger 1 on the fifth cylinder screw hole area 13.4 on the frame plane.

[0080] According to the national standard GB1589-2016 "Overall dimensions, axle loads and mass limits of automobiles, trailers and automobile trains" (hereinafter referred to as the national standard), the restriction requirements for transporting oilfield equipment with low-bed oilfield special operation vehicles are that the total height shall not exceed 4m and the total width shall not exceed 3m.

[0081] If you follow Fig.14 The drilling pump uses an air bag with a rated volume of 75 liters and a maximum working pressure of 51.7 MPa. The air bag weighs 1300 kg, is 1.2 m high and 0.78 m in diameter. The total width H2 of the drilling pump group with the air bag installed is 3.3 m, which exceeds the national standard by 0.3 m. Therefore, the air bag must be removed and reinstalled when the new drilling team arrives.

[0082] according to Fig.14 The total height H3 of the drilling pump group is 3.62m. When the drilling pump is transferred to the drilling site, the drilling pump is placed on a car. Even if a low cargo platform car is used, the height of the cargo platform bearing surface from the ground is 1.15m. In this way, the highest point of the cantilever crane is 4.77m from the ground, which exceeds the national standard by 0.77m. In order to meet the national standard requirements, the cantilever crane must be dismantled before transportation and reinstalled on the new drilling pump. The weight of the lifting cantilever crane (including cantilever hanger seat 1, bolt washer group 2, nut 3, long screw rod 4, lifting limit plate 5, cantilever 6) is more than 210kg.

[0083] See also Fig.16 , use the lifting cantilever crane to dismantle and hoist the air bag cover 12.1, air bag body 12.2, air bag seat 12.3, and air bag bracket 12.4 on the drilling pump frame, and then lower the lifting cantilever crane to the lowest position, so that the total width H2 of the drilling pump unit is reduced by 0.5m from the original 3.3m (greater than the original excess of 0.3m), and the total height H3 of the drilling pump unit is reduced by 0.82m from the original 3.62m (greater than the original excess of 0.77m), thus meeting the minimum requirements. After the drilling pump unit is transported to the new drilling site, use the lifting cantilever crane to re-hoist and install the air bag cover 12.1, air bag body 12.2, air bag seat 12.3, and air bag bracket 12.4.

[0084] See also Fig.17 , which is a schematic diagram of the lifting cantilever hanger 1 installed in the first cylinder screw hole area 13.2 on the plane of the frame to lift the fifth cylinder liner 15 at the farthest distance from the lifting cantilever hanger 1 (because the maximum weight of the cylinder liner will not exceed 100kg, it can be lifted at a long distance). That is to say, under normal circumstances, the lifting cantilever hanger 1 is installed in the first cylinder screw hole area 13.2 on the plane of the frame to meet the drilling pump lifting requirements.

[0085] See also Fig.18, which are the three-view and oblique views of the drilling pump discharge pipe. The discharge pipe 16 of the drilling pump, as well as the discharge cylinder 17 and suction cylinder 18 below the discharge pipe 16 are not wearing parts, but they still need to be replaced, so they still need to be hoisted. When hoisting the discharge pipe 16, the discharge cylinder 17, and the suction cylinder 18, the lifting cantilever hanger 1 needs to be moved to the place closest to the discharge pipe 16, the discharge cylinder 17, and the suction cylinder 18. Fig.18 When lifting the discharge pipe, the third cylinder screw hole area 13.3 on the plane of the lifting cantilever hanger 1 moving frame will minimize the distance L1 between the lifting workpiece and the axis of the outer cylindrical surface of the lifting cantilever hanger 1, and reduce the bending moment of the lifting cantilever hanger 1 and the cantilever 6. The design of the lifting cantilever hanger 1 and the cantilever 6 is based on the maximum bending moment of the lifting weight. The smaller the maximum bending moment, the lower the cost of the lifting cantilever hanger 1 and the cantilever 6. For example, according to the lifting bending moment in this example, the long lead screw 4 can be selected from the standard M27 specification, the length is 1m, and the mechanical performance is 8.8 level standard parts, and the price of one piece is only RMB 38.

[0086] The above structure can meet the requirements of total width and total height for drilling pump transportation without the need for a crane, thereby reducing drilling costs.

[0087] The implementation of the utility model has been described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments, and various changes can be made within the knowledge of ordinary technicians in the field. These changes are all protected by the utility model and also fall within the protection scope of the utility model.

Claims

1. The structure of a drilling pump with a capacity of 1600 hp or above that can both hoist the air bag and ensure the transportation conditions includes a lifting cantilever hanger (1), a bottom plate lower plane (1.1), a bottom plate threaded through hole (1.2), a fixing plate (1.3), a long groove (1.4), a fixing plate threaded through hole (1.5), an outer cylindrical surface (1.6), a bolt washer assembly (2), a nut (3), a long screw rod (4), a lifting limit plate (5), a lifting limit plate threaded through hole (5.1), a positioning hole (5.2), a lower plane (5.3), a limit screw (5.4), an upper plane (5.5), a cantilever (6), an inner cylindrical surface (6.1), a lower plane (6.2), an I-beam (6.3), an upper plane of a drilling pump frame (13.1), and a screw hole (13.5) on the upper plane of the frame; Features: The lower plane (1.1) of the bottom plate of the lifting cantilever hanger (1) is connected to the upper plane (13.1) of the drilling pump frame, and a bolt washer group (2) is passed through the threaded through hole (1.2) of the bottom plate and screwed into the screw hole (13.5) of the upper plane of the frame to fix the lifting cantilever hanger (1) and the upper plane (13.1) of the drilling pump frame together; The fixing plate (1.3) and the outer cylindrical surface (1.6) are welded together; The two long screw rods (4) are connected to the fixed plate (1.3), and each long screw rod (4) is clamped to the fixed plate (1.3) by a nut (3) at the top and bottom, respectively, so that the long screw rod (4) and the fixed plate (1.3) are fixed together; The two nuts (3) are first screwed onto each long screw rod (4) respectively; The positioning hole (5.2) of the lifting limit plate (5) is connected to the outer cylindrical surface (1.6) of the lifting cantilever suspension seat (1), and the two lifting limit plate threaded through holes (5.1) of the lifting limit plate (5) respectively pass through two long screw rods (4), and the limiting screw (5.4) of the lifting limit plate (5) is screwed into the long groove (1.4) of the lifting cantilever suspension seat (1), and the adjusting nut (3) is in contact with the lower plane (5.3) of the lifting limit plate (5); The inner cylindrical surface (6.1) of the cantilever (6) is connected to the outer cylindrical surface (1.6) of the lifting cantilever suspension seat (1), the lower plane (6.2) of the cantilever (6) is in contact with the upper plane (5.5) of the lifting cantilever suspension seat (1), and the I-beam (6.3) can rotate and rise and fall around the outer cylindrical surface (1.6) of the lifting cantilever suspension seat (1); The lifting limit plate (5) can only be lifted up and down on the outer cylindrical surface (1.6) and cannot rotate around the outer cylindrical surface (1.6); When the two nuts (3) contacting the lower plane (5.3) of the lifting limit plate (5) rotate clockwise, the lifting limit plate (5) will rise along the outer cylindrical surface (1.6), and the cantilever (6) will be pushed up along the outer cylindrical surface (1.6) by the rising of the lifting limit plate (5); When the two nuts (3) contacting the lower plane (5.3) of the lifting limit plate (5) rotate counterclockwise, the lifting limit plate (5) will descend along the outer cylindrical surface (1.6), and the cantilever (6) will descend along the outer cylindrical surface (1.6) under its own weight.

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