CN214119648U - Detection apparatus for hydraulic end lubricating pressure and fracturing unit truck - Google Patents

Abstract

The utility model relates to a detection device and fracturing unit truck of fluid end lubricating pressure, concretely relates to oil gas fracturing technical field, detection device includes a plurality of pressure measurement equipment, and is a plurality of pressure measurement equipment sets up respectively on each pipeline that the lubricating arrangement and the fluid end of fracturing unit truck are connected. Compared with the prior art, the utility model discloses can carry out pressure detection to the pressure of the lubricating oil of lubricating arrangement flow direction fluid end through pressure detection equipment, in case the fluid end breaks down, can find out the lubrication of which pipeline through pressure detection equipment very fast and go wrong, in time inspect to this route can to the lubricated state of guarantee each pipeline is normal, thereby ensures that the lubricated respond well of fluid end packing.

Description

Detection apparatus for hydraulic end lubricating pressure and fracturing unit truck

Technical Field

The utility model relates to an engineering machine tool makes technical field, particularly, relates to a detection device and fracturing unit truck of hydraulic pressure end lubricating pressure.

Background

The fracturing truck is a kind of engineering machinery commonly used in the oil exploitation industry, and mainly cracks an oil gas layer by pumping pressure of a pump truck, so that the yield of an oil well is increased. At present, an electric progressive lubrication system is generally adopted for a hydraulic end lubrication system of a fracturing truck, so that the position of a packing of the hydraulic end is lubricated. However, once the pressure of the existing lubricating system is insufficient, the lubricating quantity is reduced, the hydraulic end with a packing can be damaged seriously, and when the hydraulic end is damaged, which way of lubrication is problematic cannot be distinguished, and only field general investigation can be carried out through field personnel experience, so that the maintenance time is long, and the transition maintenance of parts of elements in good states causes serious economic loss and waste of manpower and financial resources for enterprises.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem how solve when current fluid end breaks down, can't distinguish which lubrication of the same kind goes wrong, only carries out the technical problem of on-the-spot general investigation through on-the-spot personnel experience.

In order to solve the problem, the utility model provides a detection device of hydraulic pressure end lubricating pressure is applied to the fracturing truck, detection device includes a plurality of pressure measurement equipment, and is a plurality of pressure measurement equipment sets up respectively on each pipeline that the lubricating arrangement of fracturing truck and hydraulic pressure end are connected.

From this, when being applied to the fracturing truck, through set up a plurality of pressure measurement on each pipeline that lubricating arrangement and fluid end are connected to, pressure measurement carries out pressure measurement to the pressure of the lubricating oil of lubricating arrangement flow direction fluid end, in case the fluid end breaks down, can find out the lubrication of which pipeline through pressure measurement equipment very fast and has appeared the problem, in time inspect to this route can.

Furthermore, the detection device also comprises a plurality of connecting pieces, and the connecting pieces are respectively connected with the pressure detection equipment, the pipeline of the lubricating device and the pipeline of the hydraulic end.

Therefore, the pressure of the lubricating oil in the pipeline is accurately detected by connecting the connecting piece between the lubricating device and each pipeline of the hydraulic end and connecting the other end of the connecting piece with the pressure detection equipment.

Further, the lubricating device comprises a distribution valve, the distribution valve comprises a plurality of liquid outlets, and the plurality of liquid outlets are respectively connected with the connecting pieces on the corresponding pipelines.

From this, through being connected with each connecting piece respectively to each liquid outlet on the distributing valve, detect the pressure that the liquid outlet flowed to the fluid end through the pressure measurement equipment who connects on the connecting piece to, confirm further that the lubrication of a certain pipeline of fluid end is gone wrong.

Further, the detection device also comprises a transition pipe joint, and the connecting piece is connected with the lubricating device through the transition pipe joint.

Therefore, on one hand, when the detection device is connected with the lubricating device, oil leakage caused by long-time operation can be prevented, and on the other hand, problems such as lubrication of a certain pipeline at a hydraulic end can be prevented, for example: when the pressure is too high, the transition pipe joint can reduce damage to the detection device.

Furthermore, detection device still includes high-pressure rubber tube joint, the fluid end includes high-pressure rubber tube and fluid end assembly, high-pressure rubber tube joint pass through the high-pressure rubber tube with fluid end assembly is connected.

Therefore, the high-pressure rubber pipe joint is connected with the hydraulic end, so that the sealing is convenient, and the lubricating oil is prevented from leaking when the pressure is too high; the high-pressure rubber pipe has strong pressure bearing performance and can effectively convey lubricating oil to a hydraulic end.

Furthermore, the hydraulic end assembly comprises a plurality of liquid inlets, and the liquid inlets are respectively connected with the high-pressure rubber pipe joint through the high-pressure rubber pipe.

Therefore, each liquid inlet corresponds to one cylinder body (for example, one of five-cylinder high-pressure plunger pumps), each high-pressure rubber pipe is communicated with one liquid inlet to respectively provide lubricating oil for different cylinder bodies, and the packing corresponding to each liquid inlet can be conveniently and accurately found out for lubrication.

Further, the connecting piece is a three-way valve.

Therefore, the three-way valve has better corrosion resistance and applicability, and the pressure detection equipment connected with the three-way valve accurately detects the pressure of the lubricating oil flowing to the hydraulic end of the lubricating device.

Further, the device also comprises a controller, and the controller is electrically connected with the detection device.

Therefore, the controller is electrically connected with the detection device, so that the pressure detected by the detection device can be quickly confirmed, and the fracturing truck can continue to work or stop working.

Further, the device also comprises an alarm device, and the forecast device is electrically connected with the controller.

Therefore, the controller sends out a warning signal to a driver or a worker through the warning device according to the acquired pressure signal of the detection device and the pressure signal.

In order to solve the problem, the utility model also provides a fracturing unit truck, include as above detection device.

Compared with the prior art, the beneficial effects of the fracturing truck are the same as the detection device of the hydraulic end lubricating pressure, and are not repeated here.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a structural diagram of a device for detecting the lubrication pressure of the hydraulic end according to an embodiment of the present invention;

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a front view of FIG. 1;

FIG. 4 is a cross-sectional view of the dispensing valve and sensing device of FIG. 3;

fig. 5 is a structural diagram of a liquid inlet of the hydraulic end according to an embodiment of the present invention;

fig. 6 is a structural diagram of the fluid end according to an embodiment of the present invention;

fig. 7 is a cross-sectional view of fig. 6.

Description of reference numerals:

1-lubricating device, 11-distributing valve, 111-liquid outlet, 12-main pipeline, 2-pressure detection equipment, 3-connecting piece, 4-transition pipe joint, 5-high-pressure rubber pipe joint, 6-hydraulic end assembly, 61-plunger penetrating port, 62-packing and 63-plunger.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below. In the description of embodiments of the present invention, the description of the term "some specific embodiments" means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. Throughout this specification, the schematic representations of the terms used above do not necessarily refer to the same implementation or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It should be noted that unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and include, for example, fixed or removable connections or integral connections; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1, fig. 1 is a structural diagram of a detection apparatus for lubrication pressure at a hydraulic end in this embodiment, and the detection apparatus for lubrication pressure at a hydraulic end is applied to a fracturing truck, and the detection apparatus includes a plurality of pressure detection devices 2, and the plurality of pressure detection devices 2 are respectively disposed on each pipeline connecting the lubrication apparatus and the hydraulic end of the fracturing truck. When this detection device is applied to the fracturing truck, through set up a plurality of pressure measurement equipment 2 on each pipeline that lubricating arrangement 1 and fluid end are connected, thereby, pressure measurement equipment 2 carries out pressure detection to the pressure of the lubricating oil of lubricating arrangement 1 flow direction fluid end, in case the fluid end breaks down, can find out the lubrication of which pipeline through pressure measurement equipment 2 very fast and the problem has appeared, in time to this route examine can, and then guarantee that the lubricated state of each pipeline is normal, thereby ensure that fluid end packing is lubricated respond well.

The detection device further comprises a plurality of connecting pieces 3, and the connecting pieces 3 are respectively connected with the pressure detection equipment 2 and the pipeline of the lubricating device 1 and the pipeline of the hydraulic end. The pressure of the lubricating oil in the pipeline is accurately detected by connecting pieces 3 which are arranged between the lubricating device 1 and each pipeline at the hydraulic end and connected with the pressure detection equipment 2 at the other end of the connecting pieces 3.

Referring to fig. 1-4 in combination, in some embodiments, the connector 3 is a three-way valve. The three-way valve has better corrosion resistance and applicability, and the pressure detection equipment 2 connected with the three-way valve accurately detects the pressure of the lubricating oil flowing to the hydraulic end of the lubricating device 1. Of course, the lubricating oil that mentions in this embodiment can also be lubricating grease, and lubricating grease mainly comprises densifier, base oil, additive triplex, and what be in specific lubricating arrangement 1 provides for lubricating oil or lubricating grease for the hydraulic end no longer the utility model discloses a scope of protection, all can detect the pressure of corresponding pipeline through pressure check equipment 2 can.

The lubricating device 1 comprises a distribution valve 11, wherein the distribution valve 11 comprises a plurality of liquid outlets 111, and the plurality of liquid outlets 111 are respectively connected with the connecting pieces 3 on the corresponding pipelines; the pressure of each liquid outlet 111 flowing to the fluid end is detected according to the pressure detecting device 2 connected to the connecting member 3, and thus, whether the lubrication of the packing 62 in a certain pipeline of the fluid end is problematic or not is further confirmed.

Specifically, the main line 12 of the lubricating apparatus 1 communicates with the distribution valve 11, and the lubricating oil supplied through the main line 12 is distributed through the distribution valve 11; the main pipe 12 passes through the housing of the lubricating device 1 after passing through the interior of the lubricating device 1 and extends towards the bottom of the housing to communicate with the distribution valve 11, and the distribution valve 11 is fixed on the outer side of the housing of the lubricating device 1 so as to be connected with the hydraulic end. The distribution valve 11 may include a plurality of liquid outlets 111, and the number of the liquid outlets 111 is generally greater than that of the plunger pumps of the fracturing truck, so that a certain liquid outlet 111 can be replaced when damaged or failed.

In this embodiment, take the fracturing truck to contain five high-pressure plunger pumps as an example, liquid outlets 111 used by the distributing valve 11 are five, and the positions of the five liquid outlets 111 can be set according to the distributing valve 11, for example: two liquid outlets 111 can be used to the left side of distributing valve 11, and three liquid outlets 111 can be used to the right side of distributing valve 11, specifically to the quantity and the position of liquid outlet 111 the utility model discloses do not prescribe a limit. Of course, the other liquid outlets 111 may be sealed when not in use, and unsealed when in use.

The detection device also comprises a transition pipe joint 4, and the connecting piece 3 is connected with the lubricating device 1 through the transition pipe joint 4; the advantage of this arrangement is that on the one hand, oil leakage from long-time operation of the lubricating oil device 1 or from the hydraulic end can be prevented, and on the other hand, when the pressure of lubrication in a certain pipeline at the hydraulic end is too high, the transition pipe joint 4 can reduce damage to the detection device.

Specifically, the transition pipe joint 4 is connected with the liquid outlet 111 and the connecting piece 3, and the connection form of the transition pipe joint 4 and the liquid outlet 111 is plug welding or threaded connection. The transition pipe joint 4 can be directly welded with the liquid outlet 111 by welding, and the arrangement has the advantages of preventing lubricating oil leakage caused by long-time use; threaded connection can directly carry out threaded connection with the internal thread that liquid outlet 111 set up, and the benefit that sets up like this lies in, when liquid outlet 111 appears blockking up the scheduling problem, can directly replace to other liquid outlets 111, certainly, this connected mode is when using, with transition pipe joint 4 embedding liquid outlet 111 in, the cooperation uses the packing ring with end seal to further seal liquid outlet 111.

When the other end of the transition pipe joint 4 is connected to the coupling 3, it is necessary to seal the other end with a rubber ring or the like to prevent leakage of the lubricating oil. The transition pipe joint 4 is used for achieving the purposes that the transition pipe joint 4 is stable in connection, high in sealing performance, small in pressure loss and good in process performance.

The detection device also comprises a high-pressure rubber hose joint 5, and the connecting piece 3 is connected with the hydraulic end through the high-pressure rubber hose joint 5. The high-pressure rubber pipe joint 5 is connected with the hydraulic end, so that sealing is facilitated, and lubricating oil is prevented from being leaked when pressure is too high.

With continued reference to fig. 1, in particular, the shape of the high-pressure hose connector 5 may be an elbow or a straight hose, for example: the high-pressure rubber tube joint 5 that left side liquid outlet 111 corresponds can be the elbow, and the high-pressure rubber tube joint 5 that right side liquid outlet 111 corresponds can be for straight end, and aim at can be connected the three-way valve with the fluid end can, the shape of actual high-pressure rubber tube joint 5 can be according to the position that lubricating arrangement 1 and fluid end set up in the actual fracturing unit car, carries out the shape self-adjustment to high-pressure rubber tube joint 5, and the back is connected with the fluid end to the three-way valve of being convenient for, and the lubricating oil of supply flows smoothly.

With continued reference to fig. 4, specifically, the hydraulic end includes a high-pressure hose and a hydraulic end assembly 6, and the high-pressure hose joint 5 is connected to the hydraulic end assembly 6 through the high-pressure hose. Because the high-pressure rubber pipe has strong pressure bearing performance, the lubricating oil can be effectively conveyed to the hydraulic end. The hydraulic end assembly 6 comprises a plurality of liquid inlets which are respectively connected with the high-pressure rubber hose joints 5. Every inlet corresponds a cylinder body, and every high-pressure rubber pipe communicates an inlet, provides lubricating oil to the cylinder body of difference respectively, is convenient for can accurately find out the corresponding packing of every inlet and lubricate.

Please refer to fig. 5-7 in combination, the side of the valve box at the hydraulic end is processed with 5 plunger penetrating openings 61 in rows, plunger assemblies are installed at the plunger penetrating openings 61, each plunger assembly comprises a plunger 63, a packing press cap, an oil seal, an oil ring, a copper sleeve, a packing 62, a guide ring and the like are sequentially sleeved on the plunger 63 from outside to inside, a plunger clamp is installed at the outer end of the plunger 63 through clamp screws, an annular groove is processed at the outer wall of the outer end of the packing press cap, 12-16 ball grooves are uniformly distributed at the bottom of the groove, the ball grooves extend to the inner wall of the packing press cap, balls are installed in the ball grooves, the plunger 63 can be guided through the balls, friction force can be reduced, oil injection holes are processed at positions corresponding to the oil rings on the valve box, lubrication is guaranteed, and working stability is improved.

It should be noted that, the plunger 63 and the packing 62 generally adopt pneumatic continuous pressure lubrication, the fracturing truck can automatically start the lubricating device 1 after being put into gear, the lubricating oil in the lubricating device 1 enters the liquid inlet of the hydraulic end through the liquid outlet 111 of the distribution valve and enters the plunger 63 and the packing 62 through the flow direction of the oil filling port, the piston rod is driven by the crank link mechanism of the power end, the plunger 63 is driven to do reciprocating motion in the cylinder body of the hydraulic end, and a drip box for recovering the lubricating fluid is arranged below the hydraulic end, so that the lubricating fluid is recovered.

It should be noted that the flow rate adjustment of the lubricating oil for each plunger 63 can be adjusted by a flow rate control valve. When the transmission case of the fracturing truck is hung on the brake block, the air source can be automatically cut off, and the lubricating air pump stops working.

The number of the liquid inlets is the same as that of the pressure detection devices 2. Each pressure detection device 2 corresponds to one pipeline, and the pressure of a specific pipeline is detected in real time, so that the lubrication state of each pipeline is accurately mastered, and the good lubrication of the hydraulic end packing 62 is ensured.

Preferably, the detection device further comprises a controller, wherein the controller is electrically connected with the pressure detection equipment 2, can quickly confirm the detected pressure of the detection device and enables the fracturing truck to continue to work or stop working.

It should be noted that the pressure detection device 2 may be a pressure gauge, a pressure sensor, or the like, and when the pressure detection device 2 is the pressure gauge, the pressure corresponding to each pipeline may be directly checked through the pressure gauge; when the pressure detection device 2 is a digital display pressure sensor, the pressure detected by the pressure sensor can be directly checked through digital display, and the two conditions can be avoided from being connected with the controller. The pressure value detected by each pressure detection device can be directly recorded by the staff for subsequent calculation and other operations. All can detect the pressure of the lubricating oil that liquid outlet 111 flows to the liquid end inlet and can learn the pressure that its each pipeline corresponds can.

When the pressure detection equipment 2 is electrically connected with the controller, the signal detected by the pressure detection equipment 2 can be directly sent to the controller, and the controller determines whether the packing lubrication is normal according to the acquired signal.

Preferably, the detection device further comprises a display device, the display device is electrically connected with the controller, the display device can display the pressure value of each pipeline detected by the pressure detection equipment 2 in real time, and a driver or a worker can directly check the pressure value through the display device.

More preferably, the detection device further comprises an alarm device, and the alarm device is electrically connected with the controller. When the pressure detection equipment 2 of a certain pipeline detects that the pressure is abnormal, and the controller receives a pressure abnormal signal, the control alarm device timely gives an alarm to remind a worker to timely confirm a pressure abnormal factor, and the phenomenon that the lubrication of the packing 62 fails due to the pressure abnormality is prevented. For example: when the controller acquires that the pressure detection equipment 2 of a certain pipeline sends a pressure value abnormal signal, and the warning device gives an alarm for multiple times, the controller can directly control the lubricating device 1 and the hydraulic end in the fracturing truck to be closed simultaneously, namely the fracturing truck stops running. Of course, the above-mentioned manner is only a more preferable solution in the present embodiment.

The working principle is as follows:

lubricating oil flows to the distribution valve 11 through the main pipeline 12 by the lubricating device 1, flows to the liquid inlet through each liquid outlet 111 in the distribution valve 11 respectively through the transition pipe joint 4, the three-way valve, the high-pressure rubber pipe joint 5 and the high-pressure rubber pipe, and finally flows to the oil filling port corresponding to each packing 62 after entering the liquid inlet, and the lubricating oil flows to the packing 62 by the oil filling port. Because all be provided with pressure measurement equipment 2 on each three-way valve, when pressure measurement equipment 2 appears the pressure anomaly, for example: when the pressure value of a certain pipeline is detected to be smaller than the actual pressure range value, it is determined that the lubricating oil in the pipeline cannot normally lubricate the packing 62, at the moment, the fracturing truck needs to stop working, and the abnormal condition of the pipeline is checked; when the pressure value of a certain pipeline is detected to be larger than the actual pressure range value, the excessive lubricating oil in the pipeline is confirmed, the packing 62 can be normally lubricated, but the lubricating condition of the packing 62 is influenced for a long time, and at the moment, the lubricating oil in the pipeline can be released through the overflow valve; of course, during normal operation, there may be a case where the pressure values detected by the plurality of line pressure detection devices 2 are not normal at the same time, which is serious and requires a critical investigation.

It should be noted that, for example, five high-pressure plunger pumps are included in the fracturing truck, the five high-pressure plunger pumps must be simultaneously opened or closed, that is, the liquid outlet 111 corresponding to the hydraulic end must be simultaneously opened or closed, and if a pipeline detects a pressure abnormality, all the high-pressure plunger pumps must be simultaneously stopped, that is, the lubricating apparatus 1 stops working.

It should also be noted that the lubricating device further includes a lubricating pump, the lubricating pump is disposed in the housing, the lubricating pump is connected to the main pipeline 12, and the lubricating pump drives the lubricating oil to move along the main pipeline 12 and flow out from the liquid outlet 111 through the distributing valve 11.

The lubricating pump of the lubricating device can provide lubricating oil with proper discharge capacity according to the working strength of the high-pressure plunger pump, namely the discharge capacity of the lubricating pump can be synchronously changed according to the rotating speed of the high-pressure plunger pump, and the lubricating requirement of the packing 62 is met.

Other devices or structures of the lubricating device are the same as those of the prior art, and are not described in detail in the embodiment.

Another embodiment of the utility model provides a fracturing unit truck, include as above detection device.

This fracturing unit truck still includes lubricating arrangement and fluid end, and detection device sets up lubricating arrangement is last and be connected with the fluid end, is suitable for the pressure that detects lubricating oil self-lubricating arrangement 1 to each pipeline of fluid end. Pressure detection equipment 2 carries out pressure detection to the pressure of lubricating oil that lubricating arrangement 1 flow direction to the fluid end, in case the fluid end breaks down, can find out which branch pipeline's lubrication has appeared the problem very fast through pressure detection equipment 2, in time inspect to this route can to the lubricated state of guarantee each pipeline is normal, thereby ensures that the fluid end packing is lubricated respond well.

It should be noted that the fracturing truck includes a vehicle-carrying chassis, a truck bed engine, a truck bed transmission case, a fracturing pump, a manifold system, a circuit system, a gas circuit system, a hydraulic system, and the like, which are all existing, and the structure is not described in detail in this embodiment. Compared with the prior art, the beneficial effects of the fracturing truck are the same as the detection device of the hydraulic end lubricating pressure, and are not repeated here.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Without departing from the spirit and scope of the present disclosure, those skilled in the art can make various changes and modifications, which will fall into the scope of the present disclosure.

Claims (10)

1. The utility model provides a detection apparatus for hydraulic pressure end lubrication pressure, is applied to the fracturing unit truck, its characterized in that, detection apparatus includes a plurality of pressure measurement equipment (2), and is a plurality of pressure measurement equipment (2) set up respectively on each pipeline that lubricating arrangement (1) and the hydraulic pressure end of fracturing unit truck are connected.

2. The detection device according to claim 1, characterized in that it further comprises a plurality of connections (3), a plurality of said connections (3) being connected to the pressure detection means (2) and to the lines of the lubrication device (1) and of the hydraulic end, respectively.

3. Detection device according to claim 2, wherein the lubricating device (1) comprises a distribution valve (11), the distribution valve (11) comprising a plurality of liquid outlets (111), the plurality of liquid outlets (111) being respectively connected to the connectors (3) on the corresponding lines.

4. A testing device according to claim 2, characterized in that it further comprises a transition pipe connection (4), said connecting piece (3) being connected to said lubricating device (1) through said transition pipe connection (4).

5. The detection device according to claim 4, further comprising a high-pressure hose connector (5), wherein the fluid end comprises a high-pressure hose and a fluid end assembly (6), and the high-pressure hose connector (5) is connected with the fluid end assembly (6) through the high-pressure hose.

6. The detection device according to claim 5, wherein the fluid end assembly (6) comprises a plurality of fluid inlets, and the plurality of fluid inlets are respectively connected with the high-pressure hose connector (5) through the high-pressure hose.

7. A testing device according to claim 2, characterized in that the connection (3) is a three-way valve.

8. A testing device according to any one of claims 1-7, characterized by a controller, which is electrically connected to the pressure testing apparatus (2).

9. The detection device of claim 8, further comprising an alert device electrically connected to the controller.

10. Fracturing truck, characterized in that it comprises a detection device according to any one of claims 1 to 9.

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