CN204041433U - A kind of plunger and fracturing pump fluid end - Google Patents

A kind of plunger and fracturing pump fluid end Download PDF

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Publication number
CN204041433U
CN204041433U CN201420481265.3U CN201420481265U CN204041433U CN 204041433 U CN204041433 U CN 204041433U CN 201420481265 U CN201420481265 U CN 201420481265U CN 204041433 U CN204041433 U CN 204041433U
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CN
China
Prior art keywords
plunger
chamber
port
passage
fracturing pump
Prior art date
Application number
CN201420481265.3U
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Chinese (zh)
Inventor
陈辽望
陈悦
张建
孔凡楠
胡燕
田野
崔晓宇
高依然
张成宇
修士今
马培静
戈停
韩汉培
吴爽
卜聪
纪承
隋怡冰
刘春全
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中国石油天然气股份有限公司
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Priority to CN201420481265.3U priority Critical patent/CN204041433U/en
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Publication of CN204041433U publication Critical patent/CN204041433U/en

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Abstract

The application discloses a kind of plunger and fracturing pump fluid end, to solve the problem that prior art changes clack box inconvenience.Described plunger comprises: a kind of plunger, it is characterized in that, comprise: linearly or the plunger tube that extends of camber line, it is provided with the passage that the direction that extends along described plunger tube is run through, it comprise back to the first end with first passage mouth and there is the second end of second channel mouth; Described second channel mouth is used for infusion fluid; Described first end is for stretching into the clack box of fracturing pump fluid end; Described second end is for connecting the force section of plunger described in energy push-and-pull; Be arranged on the inhaling valve of described first end, when described inhaling valve is subject to the power towards described second end, first passage mouth described in energy shutoff; When described inhaling valve is subject to the power away from described second end, can be separated with described first passage mouth.The plunger of the application and fracturing pump fluid end can improve the working life of clack box.

Description

A kind of plunger and fracturing pump fluid end

Technical field

The application relates to field of petroleum exploitation, particularly relates to a kind of plunger and fracturing pump fluid end.

Background technique

Oil is stored in the flowing material among oil reservoir hole, at present mainly through oil oil reservoir hole permeation by petroleum production out.Along with the continuous exploitation of oil, the blocking of oil reservoir hole, causes the permeability of oil reservoir to reduce gradually, and oil well oil production rate is constantly reduced.In order to improve oil well oil production rate, usually using oil formation hydraulic fracturing technology in oil reservoir, form one or several crack, to improve the permeability of oil reservoir, and then oil well output being improved.Oil formation hydraulic fracturing technology is injected to oil reservoir with the speed being greater than oil reservoir absorptivity by liquid by fracturing pump on ground, mineshaft pressure is increased gradually, when pressure be increased to be greater than pressure that oil reservoir breaks required time, oil reservoir will form one or several crack, and then improves the permeability of oil reservoir.Fracturing pump is by its fracturing pump fluid end infusion fluid, so fracturing pump fluid end is very important in fracturing pump fracturing process.

Fig. 1 shows a kind of fracturing pump fluid end structure conventional at present.As shown in Figure 1, described fracturing pump fluid end comprises plunger piston assembly 1, plunger case 2, expulsion valve 3, clack box 4, drain pipe 5, sucks valve barrel 6 and suction valve 7.Described clack box 4 is three-port structure, and it comprises first passage, second channel, third channel, described second channel and third channel to be positioned on same axis and with described first passage axes normal.Be provided with described expulsion valve 3 in described first passage, described first passage communicates with described drain pipe 5.The contact effect of the elastic member that described expulsion valve 3 is connected by it is by described first passage shutoff.Described plunger piston assembly 1 has relative first end and the second end, and its first end contacts with described plunger case 2 inner wall sealing, and its second end stretches out outside described plunger case 2.By applying active force to described plunger piston assembly 1 second end, described plunger piston assembly 1 can slide in described plunger case 2.Described plunger case 2 is tightly connected with described clack box 4, and described plunger case 4 inside communicates with described second channel.Described suction valve barrel 6 is tightly connected with described clack box 4, and described suction valve barrel 6 one end port communicates with described third channel, and the other end connects liquid inlet pipe.Described suction valve barrel 6 internal diameter is less than described third channel internal diameter.Described suction valve 7 by the tensioning function of the elastic member in described suction valve barrel 6 by the port shutoff of described suction valve barrel 6.

The working procedure of described fracturing pump fluid end is divided into feed liquor process and fluid process.In feed liquor process, by pulling force, described plunger piston assembly 1 is pulled out, in described clack box 4, pressure reduces thereupon, and under pressure action, described suction valve 7 stretches into described third channel and opened by described suction valve barrel 6 port, and then liquid is entered in clack box 4 through sucking valve barrel 6 by liquid inlet pipe.In fluid process, by thrust, described plunger piston assembly 1 is pushed, thereupon in described clack box 4 pressure increase and tell suction valve 7 under the pulling force effect of its elastic member connected again by the shutoff of described suction valve barrel 6 port, under pressure action, coupled elastic member compresses by described expulsion valve 3, and then described first passage inside is opened and is drained in drain pipe 5 by clack box 4 internal liquid.Described fracturing pump fluid end constantly repeats described feed liquor process and fluid process just can complete the work of fracturing pump infusion fluid.

At present, the described fracturing pump fluid end of prior art in use, usually there is crackle in the second channel of described clack box 4, third channel and first passage break-in place, and then need to change described clack box 4, and change described clack box 4 and need the described plunger piston assembly 1 be connected with described clack box 4, described suction valve barrel 6 to dismantle respectively, and, also needing respectively described plunger piston assembly 1, described suction valve barrel 6 to be arranged on new clack box when installing new clack box, making in practical operation, change clack box very inconvenient.

Model utility content

In view of this, the application proposes a kind of plunger and fracturing pump fluid end, so that change clack box.

A kind of plunger that the application provides, comprising:

Linearly or the plunger tube that extends of camber line, it is provided with the passage that the direction that extends along described plunger tube is run through, it comprise back to the first end with first passage mouth and there is the second end of second channel mouth; Described second channel mouth is used for infusion fluid; Described first end is for stretching into the clack box of fracturing pump fluid end; Described second end is for connecting the force section of plunger described in energy push-and-pull;

Be arranged on the inhaling valve of described first end, when described inhaling valve is subject to the power towards described second end, first passage mouth described in energy shutoff; When described inhaling valve is subject to the power away from described second end, can be separated with described first passage mouth.

Preferably, described inhaling valve maximum outside diameter is greater than described first port inner diameter.

Preferably, be provided with elastic element in described passage, described elastic element one end connects described inhaling valve, and its other end is fixedly connected on the wall of described passage.

Preferably, contact step is provided with in described passage; The guide ring that the wall being provided with outer edge surface and described passage between described contact step and described second channel mouth is fitted, is connected by being provided with link between described guide ring with described inhaling valve; Described elastic element one end is resisted against described contact step, guide ring described in the other end contact.

The application also provides a kind of fracturing pump fluid end adopting plunger described above, and it also comprises:

Have back to the first port and the clack box of the second port, it is provided with the inner chamber that direction that the plunger tube along described plunger extends extends and is communicated with described second port by described first port; Described inner chamber comprises the admission chamber near described first port and the exhaust chamber near described second port; The first end of described plunger tube stretches into described admission chamber by described first port, and the wall slipper seal of outer wall and described inner chamber that described plunger tube stretches into the part of described inner chamber is connected;

Described admission chamber and described exhaust chamber are sealed the discharge spool separated;

Outage on the wall being arranged on described exhaust chamber or on described discharge spool.

Preferably, described inner chamber also comprises the connection chamber be communicated with described admission chamber by described exhaust chamber; The internal diameter of described connection chamber is less than the internal diameter of described exhaust chamber and described admission chamber.

Preferably, described discharge spool comprises pedestal, elastic member, discharge valve; Described pedestal is connected between described first port and described exhaust chamber; Pedestal described in the contact of described elastic member one end, described exhaust chamber and the sealing of described admission chamber separate by discharge valve described in the other end contact.

Preferably, described plunger tube stretches between the outer wall of the part of described inner chamber and the wall of described inner chamber and is provided with plunger seal.

Preferably, the second end of described plunger tube is connected with liquid inlet pipe; Described liquid inlet pipe comprises flexible pipe, bulb, flange; Be provided with penetration hole in described bulb, it is arranged in described flange; Described flexible pipe one end is connected with described plunger, and the other end is connected with described bulb.

Preferably, three-way connector is connected with between described plunger and described force section, described liquid inlet pipe, described three-way connector comprises the three-way connector first end be connected with described plunger, three-way connector second end be connected with described force section, three-way connector the 3rd end that is connected with described liquid inlet pipe, the dead in line of described three-way connector first end and described three-way connector second end.

The plunger that above-mentioned the application provides is by being combined together plunger tube and inhaling valve, can carry out opening closedown and then completing feed liquor fluid by inhaling valve when push-and-pull plunger tube, and then when changing clack box, only the plunger of present embodiment is laid down in clack box, and, also only need the plunger of present embodiment to be arranged on new clack box when installing new clack box, change the operation of clack box relative to prior art, the plunger that present embodiment provides more conveniently can change clack box.

Accompanying drawing explanation

In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is existing fracturing pump fluid end structure schematic diagram;

Fig. 2 is the piston structure schematic diagram that a kind of mode of execution of the application provides;

Fig. 3 is the fracturing pump fluid end structure schematic diagram that a kind of mode of execution of the application provides;

Fig. 4 is the valve box structure schematic diagram of the fracturing pump fluid end that a kind of mode of execution of the application provides;

Fig. 5 is the expulsion valve cored structure schematic diagram of the fracturing pump fluid end that a kind of mode of execution of the application provides;

Fig. 6 is the three-way connector structural representation of the fracturing pump fluid end that a kind of mode of execution of the application provides;

Fig. 7 is the liquid inlet pipe structural representation of the fracturing pump fluid end that a kind of mode of execution of the application provides.

Embodiment

Technological scheme in the application is understood better in order to make those skilled in the art person, below in conjunction with the accompanying drawing in the embodiment of the present application, technological scheme in the embodiment of the present application is clearly and completely described, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, should belong to the scope of the utility model protection.

Please refer to Fig. 2, a kind of plunger that a kind of mode of execution of the application provides, comprise: linearly or camber line extend plunger tube 3, it is provided with the passage 31 that the direction that extends along described plunger tube is run through, it comprise back to the first end 33 with first passage mouth 35 and second end 34 with second channel mouth 36; Described second channel mouth 36 is for infusion fluid; Described first end 33 is for stretching into the clack box of fracturing pump fluid end; Described second end 34 is for connecting the force section of plunger described in energy push-and-pull; Be arranged on the inhaling valve 43 of described first end 33, when described inhaling valve 43 is subject to the power towards described second end 34, first passage mouth 35 described in energy shutoff; When described inhaling valve 43 is subject to the power away from described second end 34, can be separated with described first passage mouth 35.

The plunger that present embodiment provides is by being combined together plunger tube 3 and inhaling valve 43, can carry out opening closedown and then feed liquor fluid by inhaling valve 43 when push-and-pull plunger tube 3, and then when changing clack box, only the plunger of present embodiment is laid down in clack box, and, also only need the plunger of present embodiment to be arranged on new clack box when installing new clack box, change the operation of clack box relative to prior art, the plunger that present embodiment provides more conveniently can change clack box.

Described plunger tube 3 can linearly extend, and also can extend along camber line, and it is for extending into clack box inside.When described plunger tube 3 linearly extends, described clack box inside need have straight line type inner chamber; When described plunger tube 3 extends along camber line, described clack box inside need have the arc inner chamber of equal radian, but described plunger tube 3 be small angle along the radian of camber line, 10 degree can be no more than.Described plunger tube 3 is provided with the passage 31 that the direction that extends along described plunger tube is run through, described plunger tube 3 comprise back to the first end 33 with first passage mouth 35 and second end 34 with second channel mouth 36.Described second channel mouth 36 is for infusion fluid.Described first end 33 is for stretching into the clack box of fracturing pump fluid end.Described second end 34 is for connecting the force section of plunger described in energy push-and-pull.Further, contact step 32 can be provided with for elastic element 41 contact in described passage 31.Described contact step 32 is the reducing place on the wall of described passage 31, and when namely described passage 31 extends past described contact step 32 from described first end 33 to described second end 34, internal diameter reduces.

Described inhaling valve 43 is arranged on described first end 33, opens described inhaling valve 43 by closing whether can control described passage 31 through, that is: when described inhaling valve 43 is subject to the power towards described second end 34, and can first passage mouth 35 described in shutoff; When described inhaling valve 43 is subject to the power away from described second end 34, can be separated with described first passage mouth 35.Further, described inhaling valve 43 maximum outside diameter is greater than described first port 35 internal diameter, and such inhaling valve 43 is arranged on outside most plunger tube 3.Further, be provided with elastic element 41 in described passage 3, described elastic element 41 one end connects described inhaling valve 43, and its other end is fixedly connected on the wall of described passage 3.Connect described inhaling valve 43 by described elastic element 41 and described inhaling valve 43 given to the active force of a tension, making described inhaling valve 43 be adjacent to described first passage mouth 35 with by the shutoff of described first passage mouth 35.Further, contact step 32 is provided with in described passage 35; Guide ring 44 between described contact step 32 and described second channel mouth 35.The outer edge surface of described guide ring 44 and the wall of described passage are fitted, and are connected between described guide ring 44 with described inhaling valve 43 by being provided with link 42.Described link 42 can be a connecting rod.Described elastic element 41 one end is resisted against described contact step 32, guide ring 44 described in the other end contact.

Certainly, in the plunger that above-mentioned present embodiment provides, described elastic element 41, link 42, described inhaling valve 43, guide ring 44 can be referred to as inhalation valve 4, therefore the plunger of present embodiment can regard plunger tube 3 and the combination of inhalation valve 4 as, can be changed the clack box of fracturing pump fluid end by both combinations very easily.

Please refer to Fig. 3, a kind of mode of execution of the application also provides a kind of fracturing pump fluid end adopting plunger described above, it also comprises: have back to the first port and the clack box 1 of the second port, it is provided with the inner chamber that direction that the plunger tube 3 along described plunger extends extends and is communicated with described second port by described first port; Described inner chamber comprises the admission chamber near described first port and the exhaust chamber near described second port; The first end of described plunger tube stretches into described admission chamber by described first port, and the wall slipper seal of outer wall and described inner chamber that described plunger tube stretches into the part of described inner chamber is connected; Described admission chamber and described exhaust chamber are sealed the discharge spool 2 separated; Outage on the wall being arranged on described exhaust chamber or on described discharge spool 2.

The plunger of the fracturing pump fluid end that present embodiment provides is by being combined together plunger tube and inhaling valve, can carry out opening closedown and then feed liquor fluid by inhaling valve when push-and-pull plunger tube, and then when changing clack box, only the plunger of present embodiment is laid down in clack box, and, also only need the plunger of present embodiment to be arranged on new clack box when installing new clack box, change the operation of clack box relative to prior art, the plunger that present embodiment provides more conveniently can change clack box.

And, the clack box 1 of the fracturing pump fluid end that above-mentioned mode of execution provides is provided with the inner chamber that direction that the plunger tube 3 along described plunger extends extends, make there is not corner of the prior art in described inner chamber, and, present embodiment forms plunger by plunger tube 3 and inhalation valve 4 being organically combined and extend in described inner chamber, present embodiment is pulled during described plunger and completes feed liquor process, when pushing described plunger, complete fluid process.Present embodiment there is not corner in inner chamber due to described clack box 1, remains unchanged so liquid flows in feed liquor process and fluid process, and then the active force of prior art corner can not be produced, so effectively can extend the working life of clack box.

Please refer to Fig. 4, described clack box 1 completes the main place of feed liquor and discharge opeing for fracturing pump fluid end.Described clack box 1 have back to the first port 15 and the second port one 6.Described clack box 1 is provided with the inner chamber that direction that the plunger tube 3 along described plunger extends extends, and described first port 15 is communicated with described second port one 6 by described inner chamber; Described inner chamber comprises the admission chamber 12 near described first port 15 and the exhaust chamber 11 near described second port one 6.The first end of described plunger tube 3 stretches into described admission chamber 12 by described first port 15, and the wall slipper seal of outer wall and described inner chamber that described plunger tube 3 stretches into the part of described inner chamber is connected.

Further, described inner chamber also comprises the connection chamber be communicated with described admission chamber 12 by described exhaust chamber 11.Described exhaust chamber 11 for discharging liquid in fracturing pump fluid end fluid process, and the wall of described exhaust chamber 11 can be provided with the outage 14 of being discharged by its internal liquid, described outage 14 can also be arranged on described pedestal 21.Described exhaust chamber 11 is arranged near described first port 15 side.Can install on described discharge spool 2 between described exhaust chamber 11 and described first port 15.Described admission chamber 12 for entering liquid in fracturing pump fluid end feed liquor process, and its inside is used for described plunger tube 3 and stretches into.Described admission chamber 12 is arranged near described second port one 6 side, and the outer wall that the internal chamber wall between described admission chamber 12 and described second port one 6 and described plunger tube 3 stretch into described inner chamber part seals and is slidably connected.Described exhaust chamber 11 is communicated with described admission chamber 12 by described connection chamber.Described connection chamber can by the shutoff of described discharge spool, and the liquid after shutoff connection chamber in described admission chamber 12 is only pushed described discharge spool 2 open and just can be entered in described exhaust chamber 11.The internal diameter of described connection chamber is less than the internal diameter of described exhaust chamber 11 and described admission chamber 12, and then there is undergauge place when described exhaust chamber 11 is transitioned into described connection chamber, i.e. first step 13.Described first step 13 provides contact place for described discharge spool 2.

Can be provided with pump case 8 outside described clack box, described pump case 8 is directly exposed in air for preventing described clack box 1.Described pump case 8 is fixedly mounted on base 9, and described base 9 is for supporting the fracturing pump fluid end of present embodiment.

Please refer to Fig. 5, described admission chamber 12 and described exhaust chamber 11 sealing can separate by described discharge spool 2, and it can be located in described inner chamber.Further, described discharge spool 2 comprises pedestal 21, elastic member 22, discharge valve.Described pedestal 21 is sealedly connected near described first port 15 side in described inner chamber, and concrete, described pedestal can be sealedly connected between described exhaust chamber 12 and described first port 15.Described pedestal 21 can be provided with described outage 14.But when on the wall that described outage 14 is arranged on described exhaust chamber 11, described pedestal 21 is by described inner chamber side shutoff.Described elastic member 22 for discharge valve described in contact to described first step 13 place by described connection chamber shutoff.Described elastic member 22 one end contact at described pedestal 21, discharge valve described in its other end contact to described first step 13 by described connection chamber shutoff.Further, described elastic member 22 can be spring, but is not limited with spring, as long as can realize the elastic member of two ends contact.

Described discharge valve can by described connection chamber shutoff, and it comprises valve disc 23, valve seat 24, valve guiding 25.Described valve seat 24 can be used for preventing described connection chamber wall be subject to contact for a long time and fatigue failure occurs.Described valve seat 24 can be circular shape structure, and it is fixedly mounted in described connection chamber.Described valve seat 24 is provided with open-work, and described open-work and described valve disc 23 contacting point can be provided with rounding.Described valve guiding 25, for leading for described valve disc 23 in described elastic member telescopic process, makes contact that described valve disc 23 can be correct in described open-work side.Described valve guiding 25 is fixedly mounted on described valve disc 23, and it is arranged in described open-work, and its outer edge surface and described open-work wall are fitted.Described valve disc 23 is for by described open-work shutoff, and its external diameter is greater than described valve seat 24 internal diameter.Described valve disc 23 by described elastic member 22 contact to described open-work side by described open-work shutoff.For playing better sealing effect, described valve disc 23 can be provided with stripper rubber.

Described plunger tube 3 extend in described inner chamber by described second port one 6, and specifically, described plunger tube 3 extend in described admission chamber 12.Described plunger tube 3 can be pulled or promote described plunger tube 3 and make feed liquor or fluid in described admission chamber 12 by external force.Described plunger tube 3 is provided with passage 31, and described passage 31 has two relative passwaies, and its inside can enter liquid, and after liquid pushes described inhaling valve 43 open, liquid enters admission chamber 12.

Described plunger tube 3 stretches into the outer wall of described inner chamber part and described internal chamber wall and seals and be slidably connected, and further, described plunger tube 3 internal chamber wall stretched between the outer wall of described inner chamber part and described admission chamber 12 and described second port one 6 seals and is slidably connected.Further, described sealing is slidably connected between the internal chamber wall that is specifically as follows and stretches between the outer wall of described inner chamber part and described admission chamber 12 and described second port one 6 at described plunger tube 3 and is provided with plunger seal 7, described plunger seal 7 is fixedly mounted on the internal chamber wall between described admission chamber 12 and described second port one 6, at described plunger tube 3 relative in described clack box 1 sliding process, described plunger tube 3 stretches between the internal chamber wall between the outer wall of described inner chamber part and described admission chamber 12 and described second port one 6 and seals by described plunger seal 7.

Described admission chamber 12 bosom can be stretched in described plunger tube 3 push-on process, liquid in described admission chamber 12 farthest to be entered in described exhaust chamber 11 like this, make the liquid residue in described admission chamber 12 less, and then sufficient space accommodation can be had in its feed liquor process newly to enter liquid, improve the efficiency of present embodiment fracturing pump fluid end largely.

Second end of described plunger tube 3 is connected with liquid inlet pipe 5, by described liquid inlet pipe 5 infusion fluid in described passage 31.Described plunger tube 3 is positioned at the outer one end of described inner chamber and is connected with force section 6, can pull or promote described plunger tube 3 by described force section 6.Further, three-way connector 10 is provided with between described plunger tube 3 and described force section 6, described liquid inlet pipe 5.

Please refer to Fig. 6, described three-way connector 10 comprises three-way connector first end 101, three-way connector second end 103, three-way connector the 3rd end 102.The dead in line of described three-way connector first end 101 and described three-way connector second end 103.Described three-way connector is connected with described plunger tube 3 by described three-way connector first end 101, it is connected with force section 6 by three-way connector second end 103, it is connected with described liquid inlet pipe 5 by described three-way connector the 3rd end 102, and Placement can be Flange joint.Further, described force section 6 can be pull bar, and described pull bar part stretches in described three-way connector the 3rd end to make liquid can fully enter in described passage 31 in described three-way connector 10.

Please refer to Fig. 7, described liquid inlet pipe 5 is for infusion fluid.Described liquid inlet pipe 5 one end connects described three-way connector the 3rd end 102, and its other end port is used for infusion fluid.Further, described liquid inlet pipe 5 comprises flexible pipe 51, bulb 52, flange 53.Be provided with penetration hole in described bulb 52, it is arranged in described flange 53.Described flexible pipe 51 one end port communicates with the passway that described plunger tube 3 is positioned at outside described inner chamber, and its other end is fixedly connected with described bulb 52 and port communicates with described penetration hole.By arranging described flexible pipe 51, described bulb 52, in the working procedure of described plunger tube 3, described flexible pipe 51 and described bulb 52 can change according to the motion of described plunger tube 3, better can adapt to the structure of the fracturing pump fluid end of present embodiment.

The working principle of the pressure pump fluid end of present embodiment is described in detail below in conjunction with accompanying drawing.

Feed liquor process: present embodiment applies pulling force to pull described plunger tube 3 by described force section 6 to described plunger tube 3.Described plunger tube 3 is in drawing process, and the pressure in described admission chamber 12 decreases.When the pressure in described passage 31 is greater than pressure in described admission chamber 12 to a certain degree, described inhaling valve 43 is backed down by the pressure in described passage 31, is opened by the first passage mouth 35 of described plunger tube 3.Under described pressure, liquid is drained in described admission chamber 12 through described passage 31 by described liquid inlet pipe 5, completes feed liquor process.

Fluid process: present embodiment by described force section 6 to described plunger tube 3 applied thrust to promote described plunger tube 3.Described plunger tube 3 is in pushing course, and the pressure in described admission chamber 12 increases thereupon, meanwhile, described inhaling valve 43 under the pulling of elastic element 41 again by the first passage mouth shutoff of described plunger tube 3.Along with the described plunger tube 3 of promotion, when the pressure in described admission chamber 12 is greater than pressure in described exhaust chamber 11 to a certain degree, described discharge spool 2 is backed down by the pressure in described admission chamber 12, and then the liquid in described admission chamber 12 enters into described exhaust chamber, finally discharged by described outage 14, complete fluid process.

More than show and describe basic principle of the present utility model, major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.

Claims (10)

1. a plunger, is characterized in that, comprising:
Linearly or the plunger tube that extends of camber line, it is provided with the passage that the direction that extends along described plunger tube is run through, it comprise back to the first end with first passage mouth and there is the second end of second channel mouth; Described second channel mouth is used for infusion fluid; Described first end is for stretching into the clack box of fracturing pump fluid end; Described second end is for connecting the force section of plunger described in energy push-and-pull;
Be arranged on the inhaling valve of described first end, when described inhaling valve is subject to the power towards described second end, first passage mouth described in energy shutoff; When described inhaling valve is subject to the power away from described second end, can be separated with described first passage mouth.
2. plunger as claimed in claim 1, is characterized in that: described inhaling valve maximum outside diameter is greater than described first port inner diameter.
3. plunger as claimed in claim 2, it is characterized in that: be provided with elastic element in described passage, described elastic element one end connects described inhaling valve, and its other end is fixedly connected on the wall of described passage.
4. plunger as claimed in claim 3, is characterized in that: be provided with contact step in described passage; The guide ring that the wall being provided with outer edge surface and described passage between described contact step and described second channel mouth is fitted, is connected by being provided with link between described guide ring with described inhaling valve; Described elastic element one end is resisted against described contact step, guide ring described in the other end contact.
5. adopt a fracturing pump fluid end for plunger as described in one of Claims 1-4, it is characterized in that, also comprise:
Have back to the first port and the clack box of the second port, it is provided with the inner chamber that direction that the plunger tube along described plunger extends extends and is communicated with described second port by described first port; Described inner chamber comprises the admission chamber near described first port and the exhaust chamber near described second port; The first end of described plunger tube stretches into described admission chamber by described first port, and the wall slipper seal of outer wall and described inner chamber that described plunger tube stretches into the part of described inner chamber is connected;
Described admission chamber and described exhaust chamber are sealed the discharge spool separated;
Outage on the wall being arranged on described exhaust chamber or on described discharge spool.
6. fracturing pump fluid end as claimed in claim 5, is characterized in that: described inner chamber also comprises the connection chamber be communicated with described admission chamber by described exhaust chamber; The internal diameter of described connection chamber is less than the internal diameter of described exhaust chamber and described admission chamber.
7. fracturing pump fluid end as claimed in claim 5, is characterized in that: described discharge spool comprises pedestal, elastic member, discharge valve; Described pedestal is connected between described first port and described exhaust chamber; Pedestal described in the contact of described elastic member one end, described exhaust chamber and the sealing of described admission chamber separate by discharge valve described in the other end contact.
8. fracturing pump fluid end as claimed in claim 5, is characterized in that: described plunger tube stretches between the outer wall of the part of described inner chamber and the wall of described inner chamber and is provided with plunger seal.
9. fracturing pump fluid end as claimed in claim 5, is characterized in that: the second end of described plunger tube is connected with liquid inlet pipe; Described liquid inlet pipe comprises flexible pipe, bulb, flange; Be provided with penetration hole in described bulb, it is arranged in described flange; Described flexible pipe one end is connected with described plunger, and the other end is connected with described bulb.
10. fracturing pump fluid end as claimed in claim 9, it is characterized in that: between described plunger and described force section, described liquid inlet pipe, be connected with three-way connector, described three-way connector comprises the three-way connector first end be connected with described plunger, three-way connector second end be connected with described force section, three-way connector the 3rd end that is connected with described liquid inlet pipe, the dead in line of described three-way connector first end and described three-way connector second end.
CN201420481265.3U 2014-08-25 2014-08-25 A kind of plunger and fracturing pump fluid end CN204041433U (en)

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CN201420481265.3U CN204041433U (en) 2014-08-25 2014-08-25 A kind of plunger and fracturing pump fluid end

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Application Number Priority Date Filing Date Title
CN201420481265.3U CN204041433U (en) 2014-08-25 2014-08-25 A kind of plunger and fracturing pump fluid end

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CN204041433U true CN204041433U (en) 2014-12-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104179676A (en) * 2014-08-25 2014-12-03 中国石油天然气股份有限公司 Plunger and fluid end of fracturing pump
CN109931241A (en) * 2017-12-15 2019-06-25 青岛海尔智能技术研发有限公司 The piston component and linear compressor of linear compressor
CN109931243A (en) * 2017-12-15 2019-06-25 青岛海尔智能技术研发有限公司 The piston component and linear compressor of linear compressor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104179676A (en) * 2014-08-25 2014-12-03 中国石油天然气股份有限公司 Plunger and fluid end of fracturing pump
CN104179676B (en) * 2014-08-25 2017-01-18 中国石油天然气股份有限公司 Plunger and fluid end of fracturing pump
CN109931241A (en) * 2017-12-15 2019-06-25 青岛海尔智能技术研发有限公司 The piston component and linear compressor of linear compressor
CN109931243A (en) * 2017-12-15 2019-06-25 青岛海尔智能技术研发有限公司 The piston component and linear compressor of linear compressor

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