Protective device for hydraulic fracturing

Abstract

The protective device comprises a pressure pump, a liquid inlet pipe is arranged on the front face of the pressure pump, a liquid outlet pipe is arranged above the pressure pump, first connecting pipes are arranged on the liquid inlet pipe and the liquid outlet pipe respectively, rubber rings are arranged at the positions, close to pipe openings, of the first connecting pipes, and the rubber rings are connected with the liquid inlet pipe and the liquid outlet pipe. Clamping grooves are correspondingly formed in the positions, close to pipe openings, of the liquid inlet pipe and the liquid outlet pipe, a plurality of sets of bolts are inserted in the positions, on the outer side of the rubber ring, of the first connecting pipe in a penetrating mode, the bolts are inserted in the liquid inlet pipe and the liquid outlet pipe in a penetrating mode respectively, and nuts are screwed to the other ends of the bolts respectively. First connecting pipes of the protective device for hydraulic fracturing are inserted into clamping grooves in a penetrating mode through rubber rings to form clamping limiting structures with a liquid inlet pipe and a liquid outlet pipe, and the first connecting pipes, the liquid inlet pipe and the liquid outlet pipe form spiral locking structures through bolts and nuts; and therefore, gaps among the first connecting pipe, the liquid inlet pipe and the liquid outlet pipe can be protected through the inserted rubber rings, and then the situation of leakage at the connecting position of the pressure pump pipeline is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydraulic fracturing, in particular to a protection device for hydraulic fracturing. BACKGROUND

[0002] Hydraulic fracturing is an oil and gas well stimulation measure with wide application prospect, which uses a ground high-pressure pump set to inject fracturing fluid into a well at a rate much higher than the stratum absorption capacity. In order to expand the oil and gas channel and improve the oil and gas recovery rate, a pressure pump is used to inject fracturing fluid into the underground rock stratum.

[0003] However, during use of the pressure pump, the fracturing fluid is injected through the liquid inlet pipe and the liquid outlet pipe, so as to increase the bottom layer fracture 1 through the fracturing fluid to increase the oil and gas flow rate. However, during use of the existing pressure pump, if the liquid splashes due to an accident at the pipe connection, it is easy to cause harm to the workers, and the filter screen in the pipe is easy to be blocked after long-term work, affecting the fluidity of the liquid. Therefore, the protection device for hydraulic fracturing is proposed to solve the above problems. SUMMARY

[0004] The utility model discloses a protection device for hydraulic fracturing, which solves the problem of the existing pressure pump during use, i.e. if the liquid splashes due to an accident at the pipe connection, it is easy to cause harm to the workers, and the filter screen in the pipe is easy to be blocked after long-term work, affecting the fluidity of the liquid.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a protection device for hydraulic fracturing, comprising a pressure pump, wherein the pressure pump is provided with a liquid inlet pipe on the front face, and the pressure pump is provided with a liquid outlet pipe on the upper side, a first connecting pipe is arranged on the liquid inlet pipe and the liquid outlet pipe respectively, a rubber ring is arranged on the pipe opening of the first connecting pipe, a clamping groove is arranged on the pipe opening of the liquid inlet pipe and the liquid outlet pipe correspondingly, the rubber ring is inserted into the clamping groove, a plurality of bolts are inserted into the liquid inlet pipe and the liquid outlet pipe through the rubber ring on the outer side of the first connecting pipe, and the other end of the bolt is screwed with a nut respectively;

[0006] A fixing sleeve is arranged on the outer wall of the first connecting pipe, and a thread is arranged on the outer wall of the fixing sleeve, a protective cover is screwed on the fixing sleeve, and a screw rod is inserted into the protective cover on both sides correspondingly, and the liquid inlet pipe and the liquid outlet pipe are provided with a fixing block on the outer wall on both sides correspondingly, and the other end of the screw rod is screwed into the fixing block;

[0007] The other end of the first connecting pipe is connected with a shunt pipe, and the other end of the shunt pipe is screwed with a second connecting pipe, a plurality of valves are arranged on the shunt pipe correspondingly, and a fixing frame is screwed in the shunt pipe, and a filter screen is arranged in the fixing frame.

[0008] Preferably, the first connecting pipe is inserted into the clamping groove through the rubber ring to form a clamping limiting structure with the liquid inlet pipe and the liquid outlet pipe, and the first connecting pipe is screwed with the liquid inlet pipe and the liquid outlet pipe through the bolt and the nut to form a screw locking structure.

[0009] Preferably, the protective cover is provided with a thread on the inner wall of the upper end, which is matched with the outer wall of the fixing sleeve, and the protective cover is screwed with the fixing block through the screw rod to form a screw locking structure.

[0010] Preferably, the first connecting pipe is communicated with the second connecting pipe through the shunt pipe and the valve, and the filter screen is screwed with the shunt pipe through the fixing frame to form a screw locking structure.

[0011] Compared with the prior art, the first connecting pipe of the protective device for hydraulic fracturing is inserted into the clamping groove through the rubber ring to form a clamping limiting structure with the liquid inlet pipe and the liquid outlet pipe, and the first connecting pipe is screwed with the liquid inlet pipe and the liquid outlet pipe through the bolt and the nut to form a screw locking structure, so that the gap of the first connecting pipe and the liquid inlet pipe and the liquid outlet pipe can be protected through the inserted rubber ring, thereby avoiding leakage at the connection of the pressure pump pipeline, the protective cover of the device is provided with a thread on the inner wall of the upper end, which is matched with the outer wall of the fixing sleeve, and the protective cover is screwed with the fixing block through the screw rod to form a screw locking structure, so that the protective cover installed through the screw can avoid accidental splashing of liquid at the pipeline connection, thereby avoiding harm to the workers, the first connecting pipe of the device is communicated with the second connecting pipe through the shunt pipe and the valve, and the filter screen is screwed with the shunt pipe through the fixing frame to form a screw locking structure, so that the second connecting pipe can be controlled to work through the valve, thereby avoiding the influence of the hydraulic fracturing work when the filter screen is blocked. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the protective device for hydraulic fracturing of the utility model;

[0013] Figure 2 It is a top view structural schematic view of the protective device for hydraulic fracturing of the utility model;

[0014] Figure 3 It is a structural schematic view of the rubber sleeve assembly of the protective device for hydraulic fracturing of the utility model;

[0015] Figure 4 It is a structural schematic view of the shunt pipe of the protective device for hydraulic fracturing of the utility model.

[0016] In the drawing: 1, pressure pump, 2, liquid inlet pipe, 3, liquid outlet pipe, 4, first connecting pipe, 5, bolt, 6, rubber ring, 7, fixing sleeve, 8, protective cover, 9, fixing block, 10, screw rod, 11, shunt pipe, 12, second connecting pipe, 13, valve, 14, filter screen. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0018] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: protective device for hydraulic fracturing, including pressure pump 1, pressure pump 1 is provided with inlet pipe 2 in front, and pressure pump 1 is provided with outlet pipe 3 in upper side, first connecting pipe 4 is respectively arranged on inlet pipe 2, outlet pipe 3, rubber ring 6 is arranged on the mouth of first connecting pipe 4, and the mouth of inlet pipe 2, outlet pipe 3 is correspondingly provided with clamping groove, rubber ring 6 is inserted into clamping groove, a plurality of bolts 5 are inserted into inlet pipe 2, outlet pipe 3 on the outside of rubber ring 6 on first connecting pipe 4, and the other end of bolt 5 is respectively screwed with nut.

[0019] Further, first connecting pipe 4 is inserted into clamping groove by rubber ring 6 and forms clamping limiting structure with inlet pipe 2, outlet pipe 3, and first connecting pipe 4 forms screw locking structure with inlet pipe 2, outlet pipe 3 by bolt 5 and nut, so that the gap of pipeline connection of pressure pump 1 can be further shielded by rubber ring 6 inserted into clamping groove, and the pipeline connection is effectively protected.

[0020] First connecting pipe 4 is provided with fixing sleeve 7 on outer wall, and fixing sleeve 7 is provided with screw thread on outer wall, protective cover 8 is screwed on fixing sleeve 7, and screw rod 10 is inserted into two sides of lower end of protective cover 8, respectively, fixed block 9 is correspondingly provided on the outer wall of both sides of inlet pipe 2, outlet pipe 3, and the other end of screw rod 10 is screwed into fixed block 9.

[0021] Further, the screw thread on the inner wall of the upper end of protective cover 8 is matched with the outer wall of fixing sleeve 7, and protective cover 8 forms screw locking structure with fixed block 9 through screw rod 10, so that protective cover 8 can be installed by screwing, which can protect the pipeline connection of pressure pump 1, and avoid the harm to workers caused by accidental splashing of liquid at the pipeline connection.

[0022] The other end of the first connecting pipe 4 is connected with the shunt pipe 11 respectively, and the other end of the shunt pipe 11 is spirally provided with the second connecting pipe 12, a plurality of groups of valves 13 are correspondingly arranged on the shunt pipe 11, and the shunt pipe 11 is spirally provided with a fixing frame in the inside, and the fixing frame is provided with a filter screen 14, and it needs to be additionally explained that the valves 13 in the device can select corresponding types of valves 13 according to the size and working condition of the pressure pump 1 to control the liquid flow condition.

[0023] Further, the first connecting pipe 4 forms a communication structure through the shunt pipe 11, the valve 13 and the second connecting pipe 12, and the filter screen 14 forms a spiral locking structure through the fixing frame and the shunt pipe 11, so that the second connecting pipe 12 can be alternately used to avoid the filter screen 14 from being blocked to affect the flow of the liquid.

[0024] Working principle: when the protection device for hydraulic fracturing is used, first, the first connecting pipe 4 is respectively installed on the liquid inlet pipe 2 and the liquid outlet pipe 3, and the rubber ring 6 is inserted into the corresponding clamping groove, so that the rubber ring 6 installed by clamping can shield the gap of the pipeline connection of the pressure pump 1, so as to ensure the sealing performance of the pipeline connection of the pressure pump 1, and further avoid the liquid leakage to affect the hydraulic fracturing; then the protection cover 8 on the fixing sleeve 7 can be driven to descend by rotating, and the spiral hole on the protection cover 8 is opposite to the fixing block 9 on the liquid inlet pipe 2 and the liquid outlet pipe 3, so that the protection cover 8 can be further spirally installed by the screw rod 10, so that the protection cover 8 can protect the pipeline connection of the pressure pump 1, and at the same time, the accidental spatter of the liquid to the staff can be avoided, and the safety of the device during use is further ensured; after the protection cover 8 assembly is completed, the pressure pump 1 can be started, so that the fracturing fluid enters the discharge pipe 3 through the feed pipe 2, so that the fracturing fluid is introduced into the well through the discharge pipe 3, and at the same time, the flowing liquid can be filtered by the filter screen 14, so as to avoid the influence of impurities on the pressure pump 1, and if the filter screen 14 is blocked during the working process of the pressure pump 1, the pressure difference of the pressure pump 1 is abnormal, another group of second connecting pipes 12 can be controlled by the valve 13 to work, so as to ensure the continuity of the device during the hydraulic fracturing working process, which is the use process of the protection device for hydraulic fracturing.

[0025] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A protective device for hydraulic fracturing, comprising a pressure pump (1), wherein the pressure pump (1) has an inlet pipe (2) on its front and an outlet pipe (3) on its upper side, and the inlet pipe (2) and the outlet pipe (3) are respectively provided with first connecting pipes (4), characterized in that: The first connecting pipe (4) is provided with a rubber ring (6) at the pipe opening, and the liquid inlet pipe (2) and the liquid outlet pipe (3) are correspondingly provided with clamping grooves at the pipe opening, the rubber ring (6) is inserted into the clamping grooves, a plurality of bolts (5) are inserted into the first connecting pipe (4) outside the rubber ring (6), and the bolts (5) are respectively inserted into the liquid inlet pipe (2) and the liquid outlet pipe (3), and the other ends of the bolts (5) are respectively screwed with nuts; The first connecting pipe (4) is provided with a fixed sleeve (7) on the outer wall, and the fixed sleeve (7) is provided with threads on the outer wall, a protective cover (8) is screwed on the fixed sleeve (7), and the protective cover (8) is respectively inserted with a screw rod (10) at the lower end on both sides, the liquid inlet pipe (2) and the liquid outlet pipe (3) are respectively provided with fixed blocks (9) on the outer walls on both sides, and the other ends of the screw rods (10) are screwed into the fixed blocks (9); The other end of the first connecting pipe (4) is connected with a shunt pipe (11), and the other end of the shunt pipe (11) is screwed with a second connecting pipe (12), a plurality of valves (13) are correspondingly provided on the shunt pipe (11), and a fixed frame is screwed in the shunt pipe (11), and a filter screen (14) is provided in the fixed frame.

2. The guard for hydraulic fracturing of claim 1, wherein: The first connecting pipe (4) is inserted into the clamping grooves of the liquid inlet pipe (2) and the liquid outlet pipe (3) through the rubber ring (6) to form a clamping and limiting structure, and the first connecting pipe (4) is screwed with the liquid inlet pipe (2) and the liquid outlet pipe (3) through the bolts (5) and the nuts to form a screw locking structure.

3. The guard for hydraulic fracturing of claim 1, wherein: The protective cover (8) is provided with threads on the inner wall at the upper end, which are matched with the outer wall of the fixed sleeve (7), and the protective cover (8) is screwed with the fixed block (9) through the screw rod (10) to form a screw locking structure.

4. The guard for hydraulic fracturing of claim 1, wherein: The first connecting pipe (4) forms a communication structure through the shunt pipe (11), the valve (13) and the second connecting pipe (12), and the filter screen (14) forms a screw locking structure with the shunt pipe (11) through the fixed frame.

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