Split type light fracturing pump

Abstract

The invention relates to the technical field of fracturing pumps, in particular to a split type light fracturing pump. Comprising a crankshaft assembly, a reduction gearbox, a crosshead assembly, a spacer block assembly, a fluid end assembly and a plurality of sets of connecting modules, the reduction gearbox is connected with the crankshaft assembly, the crankshaft assembly, the crosshead assembly, the spacer block assembly and the fluid end assembly are sequentially arranged, and each connecting module comprises a long screw, a buckle, a locking nut and a displacement module. The long screw is sequentially connected with the crankshaft assembly, the crosshead assembly, the spacer block assembly and the fluid end assembly, the fluid end assembly is provided with a mounting groove, one end of the long screw is fixedly connected with the crankshaft assembly, the other end of the long screw is located in the mounting groove, the locking nut is arranged in the mounting groove and connected with the long screw, the displacement module is arranged on the locking nut, and the displacement module is connected with the cross head assembly. Through the arrangement of the structure, light weight of equipment is achieved, the equipment is convenient to install, and maintenance of the fracturing pump is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of fracturing pumps, and in particular to a split light fracturing pump. Background Art

[0002] Fracturing pump is an important equipment in the oil and gas exploration and production process. It is mainly used to inject high-pressure liquid into oil and gas wells to increase the production of oil and gas flow in the wells.

[0003] However, most of the existing traditional fracturing pumps are of integral design, heavy, and inconvenient to install. Under complex working conditions, the integral fracturing pump is difficult to maintain. Summary of the invention

[0004] The purpose of the present invention is to provide a split light fracturing pump, aiming to solve the problem that most of the existing traditional fracturing pumps are of integral design, heavy, inconvenient to install, and difficult to maintain under complex working conditions.

[0005] To achieve the above-mentioned purpose, the present invention adopts a split light fracturing pump, comprising a crankshaft assembly, a reduction gearbox, a crosshead assembly, a spacer assembly, a hydraulic end assembly and a plurality of connection modules, wherein the reduction gearbox is connected to the crankshaft assembly, the crankshaft assembly, the crosshead assembly, the spacer assembly and the hydraulic end are arranged in sequence, and each group of the connection modules is connected to the crankshaft assembly, the crosshead assembly, the spacer assembly and the hydraulic end;

[0006] The connecting module includes a long screw, a buckle, a locking nut and a displacement module. The long screw is connected to the crankshaft assembly, the crosshead assembly, the spacer assembly and the hydraulic end assembly in sequence. The hydraulic end assembly has a mounting groove. One end of the long screw is fixedly connected to the crankshaft assembly, and the other end of the long screw is located in the mounting groove. The locking nut is arranged in the mounting groove and connected to the long screw. The displacement module is arranged on the locking nut, and the buckle is sleeved on the outside of the long screw.

[0007] Wherein, the connection module further comprises a thick gasket, which is arranged in the installation groove and sleeved on the outside of the long screw, and the thick gasket is tightly attached to the locking nut and the inner wall of the installation groove.

[0008] Wherein, the displacement module includes a mounting frame and a displacement sensor, the mounting frame is connected to the locking nut and is located on the outside of the locking nut, and the displacement sensor is fixedly connected to the mounting frame and is located on the outer side wall of the mounting frame.

[0009] Wherein, the locking nut has a plurality of slots, and the plurality of slots are evenly distributed on the locking nut in a circumferential manner.

[0010] Wherein, the split-type light fracturing pump also includes a plurality of groups of plugging modules, and the plurality of groups of plugging modules are all plugged into the hydraulic end assembly and matched with the corresponding mounting grooves.

[0011] Among them, the blocking module includes a blocking plate, a rubber plug and an arc block. The rubber plug is plugged with the hydraulic end assembly and adapted to the mounting groove. The arc block is fixedly connected to one end of the rubber plug, and the blocking plate is fixedly connected to the other end of the rubber plug.

[0012] Among them, the blocking module also includes two limit columns, both of which are fixedly connected to the hydraulic end assembly and are located inside and outside the mounting groove, and both of which are plugged into the blocking plate and penetrate the blocking plate.

[0013] The present invention provides a split light fracturing pump, which consists of five modules: the crankshaft assembly, the reduction gear box, the crosshead assembly, the spacer assembly, and the hydraulic end assembly. The crankshaft assembly, the crosshead assembly, the spacer assembly, and the hydraulic end assembly are connected together by a number of long screws, wherein the end of the long screw is designed with a thread, the long screw is screwed into the thread on the crankcase of the crankshaft assembly, and the other end is connected to the high-strength locking nut and pressed onto the valve box of the hydraulic end assembly. The assembly is firmly connected through the high-strength pre-tightening force of the long screw, ensuring that the fatigue life of the power end assembly is maximized. In addition, a necking structure is designed at the end of the long screw near the connecting thread, and the buckle is connected on it. A step surface is designed on the hydraulic end assembly. When the screw breaks, the right screw drives the buckle to pop out to the right through the left inclined surface under the reaction force of the threaded connection pre-tightening force. When the plane on the right side of the buckle runs to the step surface position on the valve box, it is blocked by the step surface, preventing the broken screw from popping out and causing an accident. Through the above method, the equipment is lightweight, the equipment is easy to install, and the maintenance of the fracturing pump is facilitated. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of the split light fracturing pump of the present invention.

[0016] Figure 2 The present invention Figure 1 AA line structural cross-section view.

[0017] Figure 3 The present invention Figure 2 Enlarged view of the local structure at Y.

[0018] Figure 4 It is a schematic diagram of the connection between the blocking module and the installation groove of the present invention.

[0019] Figure 5 It is a structural schematic diagram of the locking nut of the present invention.

[0020] Figure 6 The present invention Figure 2 BB line structural cross-sectional view.

[0021] 101-crankshaft assembly, 102-reduction gearbox, 103-crosshead assembly, 104-spacer assembly, 105-hydraulic end assembly, 106-long screw, 107-buckle, 108-mounting groove, 109-locking nut, 110-thick gasket, 111-mounting bracket, 112-displacement sensor, 113-limiting column, 114-card slot, 115-sealing plate, 116-rubber plug, 117-arc block. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0023] See also Figure 1 to Figure 6 The present invention provides a split light fracturing pump, comprising a crankshaft assembly 101, a reduction box 102, a crosshead assembly 103, a spacer assembly 104, a hydraulic end assembly 105 and a plurality of connection modules, wherein the reduction box 102 is connected to the crankshaft assembly 101, the crankshaft assembly 101, the crosshead assembly 103, the spacer assembly 104 and the hydraulic end are arranged in sequence, and each group of the connection modules is connected to the crankshaft assembly 101, the crosshead assembly 103, the spacer assembly 104 and the hydraulic end;

[0024] The connection module includes a long screw rod 106, a buckle 107, a locking nut 109 and a displacement module. The long screw rod 106 is connected to the crankshaft assembly 101, the crosshead assembly 103, the spacer assembly 104 and the hydraulic end assembly 105 in sequence. The hydraulic end assembly 105 has a mounting groove 108. One end of the long screw rod 106 is fixedly connected to the crankshaft assembly 101, and the other end of the long screw rod 106 is located in the mounting groove 108. The locking nut 109 is arranged in the mounting groove 108 and connected to the long screw rod 106. The displacement module is arranged on the locking nut 109, and the buckle 107 is sleeved on the outside of the long screw rod 106.

[0025] In this embodiment, the fracturing pump is composed of five modules, namely the crankshaft assembly 101, the reduction gear box 102, the crosshead assembly 103, the spacer assembly 104, and the hydraulic end assembly 105. The crankshaft assembly 101, the crosshead assembly 103, the spacer assembly 104, and the hydraulic end assembly 105 are connected together by several long screws 106, wherein the end of the long screw 106 is designed with a thread, and the long screw 106 is screwed into the thread on the crankcase of the crankshaft assembly 101, and the other end is connected to the high-strength locking nut 109 and pressed on the valve box of the hydraulic end assembly 105. The assembly is firmly connected through the high-strength pre-tightening force of the long screw 106, ensuring that the fatigue life of the power end assembly is maximized. In addition, a necking structure is designed at the end of the long screw 106 near the connecting thread, and the buckle 107 is connected on it. A step surface is designed on the hydraulic end assembly 105. When the screw breaks, the right screw drives the buckle 107 to pop out to the right through the left inclined surface under the reaction force of the threaded connection pre-tightening force. When the plane on the right side of the buckle 107 runs to the step surface position on the valve box, it is blocked by the step surface to prevent the broken screw from popping out and causing an accident. Through the above method, the equipment is lightweight, the equipment is easy to install, and the maintenance of the fracturing pump is facilitated.

[0026] Furthermore, the connection module also includes a thick gasket 110 , which is disposed in the installation groove 108 and sleeved on the outside of the long screw 106 . The thick gasket 110 is tightly attached to the locking nut 109 and the inner wall of the installation groove 108 .

[0027] In this embodiment, by providing the thick washer 110 , the thick washer 110 can be used to enable the locking nut 109 to fix the long screw 106 in the installation groove 108 more firmly.

[0028] Furthermore, the displacement module includes a mounting frame 111 and a displacement sensor 112 . The mounting frame 111 is connected to the locking nut 109 and is located outside the locking nut 109 . The displacement sensor 112 is fixedly connected to the mounting frame 111 and is located on the outer side wall of the mounting frame 111 .

[0029] In this embodiment, the locking nut 109 is provided with a mounting hole, the displacement sensor 112 is mounted on the mounting frame 111, and the mounting frame 111 is fixed on the locking nut 109. The displacement sensor 112 determines whether the locking nut 109 is installed in place by measuring the distance from the end face of the locking nut 109 to the bottom surface of the mounting hole. During use, it is used to determine whether the threaded connection is loose and monitor in real time. If the distance exceeds the allowable value, an alarm can be issued.

[0030] Furthermore, the locking nut 109 has a plurality of slots 114 , and the plurality of slots 114 are evenly distributed on the circumference of the locking nut 109 .

[0031] In this embodiment, a slot 114 is designed on the right side of the locking nut 109, and a clamping wrench is designed accordingly. The clamping wrench is also designed with a slot 114 accordingly. The slot 114 of the clamping wrench is embedded in the slot 114 of the locking nut 109 to transmit the tightening torque.

[0032] Furthermore, the split-type light fracturing pump also includes a plurality of groups of plugging modules, and the plurality of groups of plugging modules are all plugged into the hydraulic end assembly 105 and matched with the corresponding mounting grooves 108 .

[0033] In this embodiment, the blocking module is used to shield and protect the installation groove 108 of the hydraulic end assembly 105 to prevent the locking nut 109 from being exposed and to prevent foreign matter from entering the installation groove 108 .

[0034] Furthermore, the blocking module includes a blocking plate 115, a rubber plug 116 and an arc block 117. The rubber plug 116 is plugged into the hydraulic end assembly 105 and matched with the mounting groove 108. The arc block 117 is fixedly connected to one end of the rubber plug 116, and the blocking plate 115 is fixedly connected to the other end of the rubber plug 116.

[0035] In this embodiment, after the crankshaft assembly 101, the crosshead assembly 103, the spacer assembly 104 and the hydraulic end assembly 105 are connected, the rubber plug 116 is inserted into each of the mounting grooves 108, and the arc block 117 is provided on the rubber plug 116. The rubber plug 116 is conveniently inserted into the mounting groove 108, and the rubber plug 116 will add liquid in the mounting groove 108. The rubber plug 116 is not easy to separate from the mounting groove 108. The sealing plate 115 seals outside the mounting groove 108 to prevent the mounting groove 108 from being exposed, and can protect the locking nut 109 while preventing foreign matter from entering the mounting groove 108.

[0036] Furthermore, the blocking module also includes two limiting columns 113 , both of which are fixedly connected to the hydraulic end assembly 105 and are located inside and outside the mounting groove 108 , and both of which are plugged into the blocking plate 115 and penetrate the blocking plate 115 .

[0037] In this embodiment, by arranging the limiting column 113 outside the installation groove 108 and connecting the limiting column 113 to the blocking plate 115 , the blocking plate 115 can be more stable outside the installation groove 108 and is not easy to fall off.

[0038] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A split light fracturing pump, It is characterized in that It comprises a crankshaft assembly, a reduction box, a crosshead assembly, a spacer assembly, a hydraulic end assembly and a plurality of connection modules, wherein the reduction box is connected to the crankshaft assembly, the crankshaft assembly, the crosshead assembly, the spacer assembly and the hydraulic end are arranged in sequence, and each group of the connection modules is connected to the crankshaft assembly, the crosshead assembly, the spacer assembly and the hydraulic end; The connecting module includes a long screw, a buckle, a locking nut and a displacement module. The long screw is connected to the crankshaft assembly, the crosshead assembly, the spacer assembly and the hydraulic end assembly in sequence. The hydraulic end assembly has a mounting groove. One end of the long screw is fixedly connected to the crankshaft assembly, and the other end of the long screw is located in the mounting groove. The locking nut is arranged in the mounting groove and connected to the long screw. The displacement module is arranged on the locking nut, and the buckle is sleeved on the outside of the long screw.

2. The split light fracturing pump according to claim 1, It is characterized in that The connection module also includes a thick gasket, which is arranged in the installation groove and sleeved on the outside of the long screw rod. The thick gasket is tightly attached to the locking nut and the inner wall of the installation groove.

3. The split light fracturing pump according to claim 2, It is characterized in that The displacement module includes a mounting frame and a displacement sensor. The mounting frame is connected to the locking nut and is located outside the locking nut. The displacement sensor is fixedly connected to the mounting frame and is located on the outer side wall of the mounting frame.

4. The split light fracturing pump according to claim 3, It is characterized in that The locking nut has a plurality of slots, and the plurality of slots are evenly distributed on the locking nut in a circumferential manner.

5. The split light fracturing pump according to claim 1, It is characterized in that The split light fracturing pump also includes a plurality of groups of plugging modules, and the plurality of groups of plugging modules are all plugged into the hydraulic end assembly and matched with the corresponding mounting grooves.

6. The split light fracturing pump according to claim 5, It is characterized in that The blocking module includes a blocking plate, a rubber plug and an arc block. The rubber plug is plugged with the hydraulic end assembly and matched with the mounting groove. The arc block is fixedly connected to one end of the rubber plug, and the blocking plate is fixedly connected to the other end of the rubber plug.

7. The split light fracturing pump according to claim 6, It is characterized in that The blocking module also includes two limiting columns, both of which are fixedly connected to the hydraulic end assembly and are located inside and outside the mounting groove. Both of the limiting columns are plugged into the blocking plate and penetrate the blocking plate.

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