CN214577666U - Hydraulic end assembly and plunger pump - Google Patents

Abstract

The utility model discloses a fluid end assembly and plunger pump relates to plunger pump technical field, can detect out the sealing member when the water leakage of the sealing member of fluid end assembly is less and leak. The fluid end assembly includes a valve housing, a plunger, a seal, a first detection bore, and a first detector. Wherein, the valve box is provided with a plunger cavity. The plunger is installed in the plunger chamber in a matching manner, and one end of the plunger extends out of the valve box. The seal is disposed between the inner wall of the plunger cavity and the plunger. The first detection hole is formed in the valve box and communicated with the plunger cavity, and the communication position of the first detection hole and the plunger cavity is located between one end, away from the opening of the plunger cavity, of the sealing piece and the opening of the plunger cavity. The first detector is arranged in the first detection hole and used for detecting whether water exists in the first detection hole or not. The utility model discloses a hydraulic end assembly is used for the plunger pump.

Description

Hydraulic end assembly and plunger pump

Technical Field

The utility model relates to a plunger pump technical field especially relates to a hydraulic end assembly and plunger pump.

Background

A plunger pump is a device that can convert mechanical energy into pressure energy of a liquid. Generally, referring to FIG. 1, a plunger pump includes a fluid end assembly A and a power end assembly B.

Referring to fig. 1 and 2, the fluid end assembly a includes a valve housing 100 and a plunger 200. The valve box 100 is provided with a plunger cavity 110, the plunger 200 is arranged in the plunger cavity 110 in a matching manner, one end of the plunger 200 extends out of the valve box 100 and is connected with a power end assembly B, and the power end assembly B can drive the plunger 200 to reciprocate along the axial direction of the plunger 200.

In operation of the plunger pump, referring to fig. 1 and 2, the power end assembly B is first caused to drive the plunger 200 to move leftward, so that the pressure in the plunger cavity 110 is reduced to form a negative pressure. At this time, the low-pressure liquid is drawn into the plunger chamber 110 by the negative pressure. Then, the power end assembly B drives the plunger 200 to move to the right, so that the pressure in the plunger cavity 110 becomes high. At this time, the liquid in the plunger chamber 110 becomes a high-pressure liquid and flows out of the plunger chamber 110.

In order to prevent the liquid in the plunger cavity 110 from leaking out of the valve box 100 between the inner wall of the plunger cavity 110 and the plunger 200 and ensure the normal operation of the plunger pump, a sealing member 300 is generally disposed between the inner wall of the plunger cavity 110 and the plunger 200, and the sealing member 300 can perform dynamic sealing between the inner wall of the plunger cavity 110 and the plunger 200.

However, since the pressure in the plunger cavity 110 changes when the plunger pump is operated, the sealing member 300 may be distorted or broken after the plunger pump is used for a long time. At this time, if the plunger pump continues to work, the sealing member 300 of the hydraulic end assembly a may leak water, which may affect the normal operation of the plunger pump, or even cause an accident.

In the prior art, a water leakage detection device can be arranged in the plunger pump to detect whether the sealing member 300 of the hydraulic end assembly a leaks water in real time. Referring to fig. 3, the water leakage detecting apparatus in the prior art includes a water blocking plate a, a water collector b, a water sensor c, and an alarm device d. The water retaining disk a is arranged at the part of the plunger 200 extending out of the valve box 100, and the water accumulation device b is arranged below the water retaining disk a. The water sensor c is arranged in the water collector b and is in communication connection with the alarm device d. When water is sprayed due to more water leakage at the sealing element 300 of the hydraulic end assembly A, the sprayed water can fall into the water collector b under the blocking of the water retaining disc a. When the water sensor c detects that water exists in the water collector b, the water leakage of the sealing element 300 can be judged, and the alarm device d is triggered to give an alarm.

However, the water leakage detecting device of the related art can detect water leakage of the sealing member 300 only when water is sprayed due to a large amount of water leakage of the sealing member 300, and cannot detect water leakage of the sealing member 300 in time when the amount of water leakage of the sealing member 300 is small.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a hydraulic end assembly and plunger pump, can detect out the sealing member when the water leakage of the sealing member of hydraulic end assembly is less.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, an embodiment of the present application provides a fluid end assembly. The fluid end assembly includes a valve housing, a plunger, a seal, a first detection bore, and a first detector. Wherein the valve housing has a plunger cavity therein. The plunger is installed in the plunger cavity in a matching mode, and one end of the plunger extends out of the valve box. The seal is disposed between the inner wall of the plunger cavity and the plunger. The first detection hole is formed in the valve box and communicated with the plunger cavity, and the communication position of the first detection hole and the plunger cavity is located between one end, far away from the opening of the plunger cavity, of the sealing element and the opening of the plunger cavity. The first detector is arranged in the first detection hole and used for detecting whether water exists in the first detection hole or not.

Compared with the prior art, the utility model provides an among the hydraulic end assembly, first inspection hole and plunger chamber intercommunication, and the intercommunication department in first inspection hole and plunger chamber is located the sealing member and keeps away from between the opening in open-ended one end in plunger chamber and the plunger chamber for when a small amount of leaks appear in the sealing member department of plunger pump, the hydroenergy that the sealing member department spilt enough enters into to first inspection hole.

The first detector is arranged in the first detection hole, and the first detector can detect whether water exists in the first detection hole or not. If the first detector detects that water exists in the first detection hole, water leakage at the sealing piece is indicated. If the first detector detects that no water exists in the first detection hole, the water leakage does not exist at the sealing piece.

Therefore, in the hydraulic end assembly provided by the application, when a small amount of water leaks from the sealing part, the leaked water can enter the first detection hole. The first detector can determine whether the sealing element of the plunger pump leaks water by detecting whether water exists in the first detection hole, so that the water leakage of the sealing element can be detected in time when a small amount of water exists in the sealing element.

In a second aspect, embodiments of the present application provide a plunger pump. The plunger pump comprises a power end assembly and the hydraulic end assembly. The power end assembly is used for driving a plunger of the hydraulic end assembly to reciprocate along the axial direction of the plunger.

Compared with the prior art, the utility model provides a plunger pump's beneficial effect is the same with the beneficial effect of above-mentioned hydraulic end assembly, does not do here and gives unnecessary details.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings 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 some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a prior art plunger pump;

FIG. 2 is a cross-sectional view of a prior art fluid end assembly;

FIG. 3 is a schematic view of a water leakage detection device according to the prior art;

FIG. 4 is one of cross-sectional views of a fluid end assembly provided in accordance with an embodiment of the present application;

FIG. 5 is a second cross-sectional view of a fluid end assembly according to an embodiment of the present application;

fig. 6 is a schematic connection diagram of the first detector and the second detector according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the description of the present application, "and/or" is only one kind of association relationship describing an associated object, and means that three kinds of relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

A plunger pump is a device that can convert mechanical energy into pressure energy of a liquid. With the continuous development of petroleum industry, plunger pumps are increasingly widely applied to oil field well site operation. For example: plunger pumps are required in both oil field fracturing operations and oil field flooding operations.

When the oil field fracturing operation is carried out, the plunger pump can convert low-pressure fracturing fluid into high-pressure fracturing fluid, then the high-pressure fracturing fluid is injected into the oil field well, so that a crack is formed in an oil layer in the oil field well, then a propping agent is injected into the oil field well, and therefore the yield of the oil field well can be improved.

The oilfield flooding operation is mainly used for oilfield wells with blowout stoppage or dead oil residues after long-term exploitation. During the operation of oil field water injection, after the plunger pump converts low-pressure water into high-pressure water, the high-pressure water is injected into the oil field well with the jet stopping or the dead oil residue, so that the high-pressure water can improve the pressure of an oil layer in the oil field well, and the exploitation difficulty of the oil field well with the jet stopping or the dead oil residue is reduced.

In general. Referring to fig. 1 and 2, the plunger pump includes a fluid end assembly a and a power end assembly B. Fluid end assembly a includes a valve housing 100 and a plunger 200. The valve housing 100 has a plunger cavity 110 therein, and the plunger 200 is fittingly disposed in the plunger cavity 110. The power end assembly B is mainly used for driving the plunger 200 to reciprocate along the axial direction of the plunger 200.

The power end assembly B comprises a power part and a transmission part, and the power part can be a motor or a diesel engine. The transmission part is connected between the power part and the plunger 200, and the transmission part can convert the rotation of the power part into the reciprocating motion of the plunger 200 along the axial direction.

The structure of the transmission member can be selected according to actual conditions. For example: the transmission part can be a crank-slider structure, a worm-gear structure or a planet-gear transmission structure.

Referring to fig. 2, the valve box 100 further has a gland chamber 120, a low pressure inlet chamber 130 and a high pressure outlet chamber 140 therein. The gland chamber 120, the low-pressure liquid inlet chamber 130 and the high-pressure liquid outlet chamber 140 are all communicated with the plunger chamber 110. The gland chamber 120 is coaxially disposed with the plunger chamber 110, and the axis of the gland chamber 120 and the axis of the plunger chamber 110 are both disposed parallel to the horizontal line. The low-pressure liquid inlet chamber 130 is located at the lower portion of the plunger chamber 110, a lower valve body 150 is disposed between the low-pressure liquid inlet chamber 130 and the plunger chamber 110, and the lower valve body 150 only allows the low-pressure liquid in the low-pressure liquid inlet chamber 130 to flow into the plunger chamber 110. The high pressure liquid outlet cavity 140 is located at the upper part of the plunger cavity 110, an upper valve body 160 is arranged between the high pressure liquid outlet cavity 140 and the plunger cavity 110, and the upper valve body 160 only allows the high pressure liquid in the plunger cavity 110 to flow into the high pressure liquid outlet cavity 140.

In operation of the plunger pump, referring to fig. 2, the power end assembly B is first caused to drive the plunger 200 to move leftward, so that the pressure in the plunger cavity 110 is reduced to form a negative pressure. At this time, the low-pressure liquid is sucked by the negative pressure from the low-pressure liquid inlet chamber 130 into the plunger chamber 110. Then, the power end assembly B drives the plunger 200 to move to the right, so that the pressure in the plunger cavity 110 becomes high. At this time, the liquid in the plunger chamber 110 becomes a high-pressure liquid, flows into the high-pressure liquid discharge chamber 140, and is discharged to the outside of the valve housing 100.

In order to prevent the liquid in the plunger cavity 110 from leaking out of the valve box 100 through the gap between the inner wall of the plunger cavity 110 and the plunger 200 and ensure the normal operation of the plunger pump, referring to fig. 2, a sealing member 300 is generally arranged between the inner wall of the plunger cavity 110 and the plunger 200, and the radial expansion of the sealing member 300 can realize the sealing between the inner wall of the plunger cavity 110 and the plunger 200.

However, referring to fig. 2, since the high pressure and the low pressure in the plunger chamber 110 are cyclically applied when the plunger pump is operated, the sealing member 300 may be distorted or broken after the plunger pump is used for a long time. At this time, if the plunger pump continues to work, the sealing member 300 of the plunger pump may leak water, which may affect the normal operation of the plunger pump, or even cause an accident.

In the prior art, a water leakage detection device may be disposed in the plunger pump to detect whether the sealing member 300 of the plunger pump leaks water in real time. Referring to fig. 3, the water leakage detecting apparatus in the prior art includes a water blocking plate a, a water collector b, a water sensor c, and an alarm device d. The water retaining disk a is arranged at the part of the plunger 200 extending out of the valve box 100, and the water accumulation device b is arranged below the water retaining disk. The water sensor c is arranged in the water collector b and is in communication connection with the alarm device d. When water is sprayed due to more water leakage at the sealing member 300 of the plunger pump, the sprayed water can fall into the water collector b under the blockage of the water retaining disc a. When the water sensor c detects that water exists in the water collector b, the water leakage of the sealing element 300 can be judged, and the alarm device d is triggered to give an alarm.

However, the water leakage detecting device of the related art can detect water leakage of the sealing member 300 only when water is sprayed due to a large amount of water leakage of the sealing member 300, and cannot detect water leakage of the sealing member 300 in time when the amount of water leakage of the sealing member 300 is small.

Detect out sealing member 300 hourglass water in order to detect out when the sealing member 300 hourglass water yield of fluid end assembly A is less, the utility model provides a fluid end assembly A. Referring to fig. 4 to 6, the fluid end assembly a includes a valve housing 100, a plunger 200, a sealing member 300, a first sensing hole 170, and a first detector 500.

Therein, the valve housing 100 has a plunger cavity 110 therein. The plug 200 is fittingly installed in the plunger chamber 110, and one end of the plunger 200 protrudes out of the valve housing 100. The seal 300 is disposed between the inner wall of the plunger cavity 110 and the plunger 200.

The first detection hole 170 is opened on the valve box 100, the first detection hole 170 is communicated with the plunger cavity 110, and the communication position of the first detection hole 170 and the plunger cavity 110 is located between one end of the sealing element 300, which is far away from the opening of the plunger cavity 110, and the opening of the plunger cavity 110, so that when a small amount of water leakage occurs at the sealing element 300 of the plunger pump, the water leaked at the sealing element 300 can enter the first detection hole 170.

The first detector 500 is disposed in the first detection hole 170, and the first detector 500 is used for detecting whether water exists in the first detection hole 170. If the first detector 500 detects the presence of water in the first detection hole 170, it indicates water leakage at the sealing member 300. If the first detector 500 detects that there is no water in the first detection hole 170, it indicates that there is no water leakage at the sealing member 300.

Therefore, in the fluid end assembly a provided by the present application, when a small amount of water leaks from the sealing member 300, the leaked water can enter the first detection hole 170. The first detector 500 can determine whether the sealing member 300 of the plunger pump leaks water by detecting whether water exists in the first detection hole 170, so that water leakage of the sealing member 300 can be detected in time when there is a small amount of water leakage of the sealing member 300.

It should be noted that the type of the first detector 500 does not affect the achievement of the object of the present invention, and therefore, the type of the first detector 500 is not limited herein.

For example: the first detector 500 may include a water leakage detection line, a water leakage detection circuit, and a processor. The first end of the water leakage detection line is suspended, the second end of the water leakage detection line is connected with the input end of the water leakage detection circuit, and the output end of the water leakage detection circuit is connected with the processor. When water leaking from the sealing member 300 of the fluid end assembly a enters the first detection hole 170, the water leakage detection line in the first detection hole 170 is short-circuited, so that the output potential of the water leakage detection circuit is changed. When the output potential of the water leakage detection circuit received by the processor changes, it can be determined that water exists in the first detection hole 170.

The first detector 500 may be a water-sensitive sensor, and when water leaked from the sealing member 300 of the fluid end assembly a enters the first detection hole 170, the water-sensitive sensor may determine whether water exists in the first detection hole 170.

The manner of opening the first detection hole 170 may be selected according to the manner of fixing the first detector 500.

For example: when the first detector 500 is screwed into the first detection hole 170, the first detection hole 170 is a threaded hole. In this case, it is known that the first detector 500 can be fixed in the first detection hole 170 only by forming a screw thread on the outer wall of the first detector 500 without using other connecting members.

When the first detector 500 can be fixed in the first detection hole 170 by means of adhesion, the first detection space may be a light hole.

Of course, an end cap may be provided at an end of the first detection hole 170, and after the first detector 500 is placed in the first detection hole 170, the first detector 500 may be sealed in the first detection hole 170 by the end cap.

It should be noted that the communication between the first detecting hole 170 and the plunger cavity 110 does not affect the implementation of the object of the present invention, and is not limited herein.

For example: referring to fig. 4 to 6, the communication between the first detecting hole 170 and the plunger cavity 110 is located between the end of the sealing member 300 close to the opening of the plunger pump and the opening of the plunger pump.

The communication between the first sensing hole 170 and the plunger cavity 110 may also be located between the axial ends of the sealing member 300. At this time, when water leaks from the sealing member 300 of the plunger pump, the water leaking from the sealing member 300 can be rapidly introduced into the first detection hole 170, and thus the water leakage from the sealing member 300 can be more rapidly detected.

The position of the first detecting hole 170 may be selected according to actual conditions.

For example: the first sensing hole 170 may be opened in a sidewall of the valve housing 100 at an upper portion of the plunger 200.

Of course, referring to fig. 4 to 6, the first sensing hole 170 may be opened in a sidewall of the valve housing 100 at a lower portion of the plunger 200. At this time, when water leaks from any position of the sealing member 300, the water leaking from the sealing member 300 can enter the first detection hole 170 by gravity, so that the first detector 500 in the first detection hole 170 can detect the water leaking from the sealing member 300 more rapidly and accurately.

In some embodiments, referring to fig. 4 to 6, in order to facilitate the detachment and installation of the plunger 200, the valve housing 100 further has a gland chamber 120 therein, the gland chamber 120 is communicated with the plunger chamber 110, and the gland chamber 120 is coaxially disposed with the plunger chamber 110, so that the plunger 200 can sequentially enter the gland chamber 120 into the plunger chamber 110 for installation. Meanwhile, in order to prevent the liquid in the plunger chamber 110 from entering the gland chamber 120 and leaking, a suction gland 400 is disposed in the gland chamber 120.

In order to detect the water leakage of the suction gland 400 in time when the water leakage occurs in the suction gland 400, the second detection hole 180 is further formed in the pressure valve box 100, the second detection hole 180 is communicated with the gland cavity 120, and the communication position of the second detection hole 180 and the gland cavity 120 is located between the end, away from the opening of the gland cavity 120, of the suction gland 400 and the opening of the gland cavity 120, so that when the water leakage occurs in the suction gland 400, the water leaked from the suction gland 400 can enter the second detection hole 180.

Meanwhile, the fluid end assembly further comprises a second detector 600, the second detector 600 is disposed in the second detection hole 180, and the second detector 600 is used for detecting whether water exists in the second detection hole 180. If the second detector 600 detects that water is present in the second detection hole 180, it indicates that water leaks from the suction cover 400. If the second detector 600 detects that there is no water in the second detection hole 180, it indicates that there is no water leakage in the suction cover 400.

Therefore, in the fluid end assembly a provided by the present application, when a small amount of water leaks from the suction gland 400, the leaked water can enter the second detection hole 180. The second detector 600 can determine whether the suction gland 400 of the plunger pump leaks water by detecting whether water exists in the second detection hole 180, so that water leakage of the suction gland 400 can be detected in time when a small amount of water leaks from the suction gland 400.

The type of the second detector 600 may be the same as the type of the first detector 500, or may be different from the type of the first detector 500, and is not limited herein.

For example: the first detector 500 may be a water leak detection cable, a water leak detection circuit and a processor, and the second detector 600 may be a water sensitive sensor.

Alternatively, the first detector 500 and the second detector 600 are both water-sensitive sensors.

The opening mode of the second detection hole 180 is also selected according to the fixing mode of the second detector 600. For example: the second sensing hole 180 may be a light hole or a screw hole.

It should be noted that the communication position of the second detection hole 180 and the gland chamber 120 may be selected according to actual situations.

For example: the communication position between the second detection hole 180 and the gland chamber 120 is located between the end of the gland that is far from the opening of the gland chamber 120 and the opening of the gland chamber 120.

Of course, referring to fig. 4 to 6, the communication between the second sensing hole 180 and the gland chamber 120 may be located between the two axial ends of the suction gland 400. At this time, when water leaks from the suction cover 400 of the plunger pump, the water leaking from the suction cover 400 can be rapidly introduced into the second detection hole 180, and thus the water leaking from the suction cover 400 can be more rapidly detected.

The position of the second detecting hole 180 may be selected according to actual conditions.

For example: the second sensing hole 180 may be opened at a sidewall of the valve housing 100 at an upper portion of the suction gland 400.

Referring to fig. 4 to 6, the second sensing hole 180 may be opened at a sidewall of the valve housing 100 at a lower portion of the suction gland 400. At this time, when water leaks from any position of the suction cover 400, the water leaking from the suction cover 400 can enter the second detection hole 180 under the action of gravity, so that the second detector 600 in the second detection hole 180 can detect the water leakage from the suction cover 400 more rapidly and accurately.

It should be noted that, in order to remind the staff in time when water leaks from the sealing member 300 of the plunger pump, referring to fig. 4 to 6, the fluid end assembly a further includes an alarm 700.

The alarm 700 is in communication with the first detector 500, and the alarm 700 is configured to sound an alarm when the first detector 500 detects the presence of water in the first detection hole 170. At this time, when the first detector 500 detects that water exists in the first detection hole 170, it is described that a water leakage phenomenon occurs at the sealing member 300 of the fluid end assembly a, and at this time, the alarm 700 gives an alarm to prompt a worker that the water leakage occurs at the sealing member 300, so that the worker can replace or maintain the sealing member 300 conveniently.

Referring to fig. 4-6, the alarm 700 may also be in communication with the second detector 600, and the alarm 700 is configured to issue an alarm if the second detector 600 detects the presence of water in the second detection hole 180. At this moment, when the second detector 600 detects that water exists in the second detection hole 180, the phenomenon of water leakage occurs at the suction gland 400 of the hydraulic end assembly a is described, and at this moment, the alarm 700 gives an alarm to prompt a worker that water leakage occurs at the suction gland 400, so that the worker can replace or maintain the suction gland 400 conveniently.

Of course, referring to fig. 4 to 6, the alarm 700 may also be connected to both the first detector 500 and the second detector 600, the alarm 700 is configured to give an alarm when the first detector 500 detects that water is present in the second detection hole 180, and the alarm 700 is further configured to give an alarm when the second detector 600 detects that water is present in the second detection hole 180. At this time, the alarm 700 gives an alarm when water leaks from the sealing member 300 and from the suction gland 400, so that the sealing member 300 and the suction gland 400 can be conveniently replaced or maintained by a worker.

The structure of the alarm 700 may be selected according to actual conditions.

For example: the alarm 700 may be an audible and visual alarm 700, and the alarm 700 may also be a mobile phone capable of receiving an alarm call from the first detector 500 or the second detector 600 to alarm.

In some embodiments, referring to fig. 4-6, the fluid end assembly a further includes a display 800. The display 800 is in communication with the first detector and the display 800 is configured to indicate that the seal 300 is leaking if the first detector 500 detects the presence of water in the first detection aperture 170. When the first detector 500 detects that water is present in the first detection hole 170, it indicates that water leakage occurs in the sealing member 300. At this time, the display 800 displays that the sealing member 300 leaks water, so that it is convenient for a worker to replace or repair the sealing member 300.

The display 800 may also be in communication with the second detector 600, and the display 800 is configured to indicate a suction gland leak when the second detector 600 detects the presence of water in the second detection hole 180. When the second detector 600 detects that water is present in the second detection hole 180, it indicates that water leakage occurs in the suction cover 400. At this time, the display 800 displays that the suction cover 400 leaks water, so that it is convenient for a worker to repair and replace the suction cover 400.

The display 800 may also be in communication with both the first detector 500 and the second detector 600, and the display 800 is configured to indicate that the sealing member 300 is leaking water if the first detector 500 detects the presence of water in the first detection hole 170. The display 800 is also used to indicate a suction gland leak when the second detector 600 detects the presence of water in the second detection hole 180. At this time, the display 800 can display that the sealing member 300 leaks water when the sealing member 300 leaks water, and the display 800 can display that the suction gland 400 leaks water when the suction gland 400 leaks water, so that the maintenance of the sealing member 300 and the suction gland 400 by a worker can be facilitated.

In some embodiments, the fluid end assembly a provided herein further includes a monitoring center. The monitoring center is in communication with the first detector 500, and the monitoring center is configured to obtain a time when water is present in the first detection hole 170 and generate a visual report when the first detector 500 determines that water is present in the first detection hole 170. At this time, the monitoring center acquires the time when water is present in the first detection hole 170 and generates a visual report, that is, a visual report having a specific time each time the seal 300 leaks water. At this time, the working life of the sealing element 300 in normal operation can be determined by the staff according to the time when the sealing element 300 leaks water twice, and the sealing element 300 is maintained and replaced within the working life of the sealing element 300, so that water leakage of the sealing element 300 is prevented, and the normal operation of the fluid end assembly a is ensured.

The monitoring center may be further communicatively connected to the second detector 600, and the monitoring center is configured to obtain a time when water is present in the second detection hole 180 and generate a visual report when the second detector 600 determines that water is present in the second detection hole 180. At this time, the monitoring center acquires the time when water exists in the second sensing hole 180 and generates a visual report, that is, a specific time when the suction gland 400 leaks water each time in the visual report. At this time, the worker can determine the working life of the suction gland 400 during normal operation according to the time when the suction gland 400 leaks water twice, and maintain and replace the suction gland 400 within the working life of the suction gland 400, thereby preventing the suction gland 400 from leaking water and ensuring the normal operation of the fluid end assembly a.

The present application further provides a plunger pump. Referring to fig. 1, the plunger pump includes a power end assembly B and the above-described fluid end assembly a. The power end assembly is used for driving the plunger 200 of the fluid end assembly A to reciprocate along the axial direction of the plunger 200.

Compared with the prior art, the utility model provides a plunger pump's beneficial effect is the same with above-mentioned hydraulic end assembly A's beneficial effect, does here and gives unnecessary details.

In some embodiments, referring to fig. 4-6, the fluid end assembly a of the plunger pump further comprises a controller 900. The controller 900 is communicatively connected to the first detector 500, and the controller 900 is configured to generate a shutdown command for controlling the power switch of the plunger pump to be turned off in case the first detector 500 detects water leakage from the seal 300. At this moment, when first detector 500 detects that sealing member 300 leaks water, controller 900 can generate and close the instruction for the power of plunger pump is closed, thereby makes the plunger pump can be automatic shutdown when sealing member 300 leaks water, and then can make things convenient for staff to the maintenance and the maintenance of plunger pump, and the plunger pump continues work when sealing member 300 leaks water and takes place the incident simultaneously.

The controller 900 may be further communicatively connected to the second detector 600, and the controller 900 is configured to generate a closing command for controlling the power switch of the plunger pump to be closed in case that the second detector 600 detects water leakage from the suction gland 400. At this moment, when second detector 600 detected that suction gland 400 leaked water, controller 900 can generate and close the instruction for the power of plunger pump is closed, thereby makes the plunger pump can be automatic shutdown when suction gland 400 leaked water, and then can make things convenient for staff's maintenance and maintenance to the plunger pump, and the plunger pump continues work and takes place the incident when can also preventing suction gland 400 leaked water simultaneously.

The controller 900 may also be communicatively connected to both the first detector 500 and the second controller 900, and the controller 900 is configured to generate a shutdown command in the event that the first detector 500 detects a water leak in the seal 300. The controller 900 is also configured to generate a closing command for controlling the power switch of the plunger pump to be closed in a case where the second detector 600 detects water leakage from the suction gland 400. At this time, when the first detector 500 detects water leakage from the sealing member 300, the controller 900 can generate a shutdown command so that the power supply of the plunger pump is turned off, thereby enabling the plunger pump to be automatically shut down when water leakage from the sealing member 300 occurs. When second detector 600 detects that suction gland 400 leaks water, controller 900 also can generate the instruction of closing for the power of plunger pump is closed, thereby makes the plunger pump can be automatic shutdown when suction gland 400 leaks water, and then can make things convenient for staff's maintenance and maintenance to the plunger pump, and the while can also prevent that sealing member 300 and suction gland 400 from continuing work when leaking water and taking place the incident.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A fluid end assembly, comprising:

a valve housing having a plunger cavity therein;

the plunger is installed in the plunger cavity in a matching mode, and one end of the plunger extends out of the valve box;

a seal disposed between an inner wall of the plunger cavity and the plunger;

the first detection hole is formed in the valve box and communicated with the plunger cavity, and the communication position of the first detection hole and the plunger cavity is located between one end, away from the opening of the plunger cavity, of the sealing element and the opening of the plunger cavity;

and the first detector is arranged in the first detection hole and is used for detecting whether water exists in the first detection hole or not.

2. The fluid end assembly of claim 1 wherein the communication of the first check bore with the plunger cavity is between axial ends of the seal.

3. The fluid end assembly of claim 1 wherein the axis of the plunger is oriented horizontally and the first sensing aperture opens in a side wall of the valve housing below the seal.

4. The fluid end assembly of any one of claims 1-3 wherein the valve housing further comprises a gland chamber therein, the gland chamber being in communication with the plunger chamber and being disposed coaxially with the plunger chamber; a suction gland is arranged in the gland cavity;

a second detection hole is formed in the valve box and is communicated with the gland cavity, and the communication position of the second detection hole and the gland cavity is located between one end, far away from the opening of the gland cavity, of the suction gland and the opening of the gland cavity;

the hydraulic end assembly further comprises a second detector, the second detector is arranged in the second detection hole, and the second detector is used for detecting whether water exists in the second detection hole or not.

5. The fluid end assembly of claim 4 wherein the communication of the second sensing bore with the gland chamber is between the axial ends of the suction gland.

6. The fluid end assembly of claim 5 wherein the axis of the plunger is oriented horizontally and the second sensing aperture opens in a side wall of the valve housing below the suction gland.

7. The fluid end assembly of claim 4, further comprising:

the alarm is in communication connection with the first detector and is used for giving an alarm when the first detector detects that water exists in the first detection hole; and/or the presence of a gas in the gas,

the alarm is in communication connection with the second detector and used for giving an alarm when the second detector detects that water exists in the second detection hole.

8. The fluid end assembly of claim 4, further comprising:

a display in communicative connection with the first detector, the display for displaying a seal leak if the first detector detects the presence of water within the first detection bore;

and/or the presence of a gas in the gas,

the display is in communication connection with the second detector and is used for displaying water leakage of the suction gland when the second detector detects that water exists in the second detection hole.

9. A plunger pump, comprising a power end assembly and the fluid end assembly of any one of claims 1 to 8, wherein the power end assembly is used for driving a plunger of the fluid end assembly to reciprocate along an axial direction of the plunger.

10. The plunger pump of claim 9, wherein the fluid end assembly further comprises:

the controller is in communication connection with the first detector and is used for generating a closing instruction when the first detector detects that the sealing element leaks water, and the closing instruction is used for controlling a power switch of the plunger pump to be closed.

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