CN201269071Y - Novel pressure balance control apparatus for operation under pressure - Google Patents
Novel pressure balance control apparatus for operation under pressure Download PDFInfo
- Publication number
- CN201269071Y CN201269071Y CNU2008200911315U CN200820091131U CN201269071Y CN 201269071 Y CN201269071 Y CN 201269071Y CN U2008200911315 U CNU2008200911315 U CN U2008200911315U CN 200820091131 U CN200820091131 U CN 200820091131U CN 201269071 Y CN201269071 Y CN 201269071Y
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- control device
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Abstract
The utility model relates to a novel pressure balance control device for operation under pressure, which mainly solves the problems of complex structure, needing manual operation and difficult realization on automation control of the prior pressure balance control device which is used for an oil-water well operation under pressure flashboard blowout preventer seal accessory switch. The novel pressure balance control device is formed by connecting an upper big flange, a lower big flange, a pressure balance control device shell of a well fluid main access way and two same hydraulic control conical switch valves through a bolt, a nut and a seal ring, and each hydraulic control conical switch valve is formed by sequentially connecting a hydraulic control piston-conical surface sealing main valve core, a pretension spring, a valve sleeve, a valve cover, a valve seat, a throttle element and a connecting plate in a sealing way. The novel pressure balance control device for operation under pressure has simple and compact structural design and reliable sealing design performance, can adopt hydraulic remote control, is convenient to operate, is very easy to realize automatic control, and satisfies the needs for realizing production automation in the process of oil and water well operation under pressure.
Description
Technical field:
The utility model relates to a kind of pressure balance control device when being used for the open and close of oil water well working with pressure ram preventer sealing pair, specifically, relate in a kind of producing well and water injection well Operating Pressure process that is applied to field produces, when guaranteeing that the well head ram preventer opens and closes, make the upper and lower end actuating pressure of sealing damper reach the required pressure balance control device of balance.
Background technology:
In the oilfield process, the input that adopts the Operating Pressure technology can remove required well killing fluid of routine work and ground installation thereof to the oil-water well operation has been saved the expense of arranging well killing fluid.And it is pollution-free; protect environment, but also can protect and keep the original production capacity on stratum, reduced the number of times of well stimulations such as acidifying, pressure break; for the long-term exploitation and the steady production of oil gas field provides good basis, thereby can utilize our underground petroleum resources to greatest extent.But somewhere around here press in the operation process, need guarantee that when the well head ram preventer opened and closed, the upper and lower end actuating pressure of sealing damper will reach balance.Therefore a kind of pressure balance control device of this purposes of realizing has become the important servicing unit that ensures that Operating Pressure is finished smoothly.At present, pressure balance control device when having had some to be used for the open and close of oil water well working with pressure ram preventer sealing pair, but these existing apparatus are complex structure and need manually-operated often, is difficult to realize automation control, therefore can't satisfy the needs of field produces.
The utility model content:
For solve existing when being used for the open and close of oil water well working with pressure ram preventer sealing pair pressure balance control device complex structure and need manually-operated, be difficult to realize the problem of automation control, the utility model provides a kind of novel Operating Pressure pressure balance control device, the novel Operating Pressure pressure balance of this kind control device structure design is simple, compact, the Seal Design dependable performance, and can adopt the hydraulic pressure Long-distance Control, easy to operate, be highly susceptible to realizing automatic control, satisfied the needs of realizing the production automation in the oil water well working with pressure process.
The technical solution of the utility model is: the novel Operating Pressure pressure balance of this kind control device, on having, the pressure balance control device housing hydraulic control horn-break switch valve identical with two of big flange and FIH master access way passes through bolt down, nut and joint ring connect the back and constitute, its kind hydraulic control horn-break switch valve is mainly by hydraulic control piston-conical surface seal main valve plug, preloading spring, valve pocket, valve gap, valve seat, after being tightly connected in regular turn, restricting element and junction plate constitute hydraulic control piston-conical surface seal main valve plug, valve gap, all have the sealing mounting groove on valve seat and the junction plate.Specifically, hydraulic control piston-conical surface seal main valve plug integral body is T-shape, and its upper end core has the lower spring chamber that embeds for preloading spring, and its lower end then is inverted frustum; Have valve gap control hydraulic oil channel on the sidewall of valve gap, the core in the valve gap lower end has the upper spring chamber that embeds for preloading spring, and described valve gap control hydraulic oil channel is connected with the upper spring chamber; Have valve pocket control hydraulic oil channel on the sidewall of valve pocket, connect at the center of valve pocket and have the piston mating holes that matches with hydraulic control piston-conical surface seal main valve plug, described valve pocket control hydraulic oil channel is connected with the piston mating holes; Have many steps valve seat liquid that run through and that have conical seal (contact) face at the core of valve seat and flow to out the duct, the bottom that this valve seat liquid flows to out the duct is the restricting element installing hole, and the sidewall that this valve seat liquid flows to out the duct connects with the primary valve of opening on the valve seat sidewall; The core of junction plate has a step transitional fluid passage that runs through, and matches with the bottom of valve seat in the upper end of this transitional fluid passage, and the lower end of this transitional fluid passage then communicates with FIH master access way.
The utlity model has following beneficial effect: owing to take such scheme, two hydraulic control horn-break switch valve symmetries are installed in the both sides of pressure balance control device housing correspondence, and two hydraulic oil access ways and the passage for liquid turnover in the well are all arranged on each hydraulic control horn-break switch valve.During application, with the hydraulic control mouth on the hydraulic oil access way connection console, to be connected on well mesohigh or the well head pressure relief device for the passage of liquid turnover in the well, realize hydraulic control thus, guaranteed the smooth realization of remote automation operation this pressure balance control device.In addition, in this pressure balance control device, the upper and lower end of hydraulic control piston-conical surface seal main valve plug is designed to different effective active areas in two hydraulic control horn-break switch valves, thereby guarantee to produce the hydraulic-driven power of enough big opening and closing control valve conical surface seal, can accurately control turning on and off of pressure fluid in the well head seal cavity, guaranteed the pressure balance in the ram preventer opening and closing process, therefore, make this pressure balance control device have stronger job stability.In addition, restricting element has been installed in the valve seat bottom in hydraulic control horn-break switch valve, makes to produce damping when liquid enters in well, has reduced shock and vibration when high-pressure fluid is entered low pressure chamber.In a word, this kind pressure balance control device structure design is simple, compact, the Seal Design dependable performance, can adopt hydraulic pressure Long-distance Control high-pressure high-flow fluid, easy to operate, be easy to realize automatic control, be very suitable for the switch control of the fluid passage in the oil water well working with pressure process.
Description of drawings:
Fig. 1 is an overall structure schematic diagram of the present utility model.
Fig. 2 is the structure sectional view of Fig. 1.
Fig. 3 is the structure sectional view of hydraulic control horn-break switch valve in the utility model.
Fig. 4 is the structure sectional view of hydraulic control horn-break switch valve valve gap in the utility model.
Fig. 5 is the vertical view of hydraulic control horn-break switch valve valve gap in the utility model.
Fig. 6 is the structure sectional view of hydraulic control horn-break switch valve valve pocket in the utility model.
Fig. 7 is the vertical view of hydraulic control horn-break switch valve valve pocket in the utility model.
Fig. 8 is the structure sectional view of hydraulic control horn-break switch valve hydraulic control piston-conical surface seal main valve plug in the utility model.
Fig. 9 is the structure sectional view of hydraulic control horn-break switch valve base in the utility model.
Figure 10 is the vertical view of hydraulic control horn-break switch valve base in the utility model.
Figure 11 is the structure sectional view of hydraulic control horn-break switch valve junction plate in the utility model.
Figure 12 is the right view of hydraulic control horn-break switch valve junction plate in the utility model.
Figure 13 is the left view of hydraulic control horn-break switch valve junction plate in the utility model.
1-pressure balance control device housing among the figure, 2-hydraulic control horn-break switch valve, the 3-bolt, 4-nut, 5-joint ring, the 6-valve gap, 7-upper spring chamber, 8-FIH master access way, 9-valve pocket, 10-combination sealing Glais ring, 11-preloading spring, 12-make up this special envelope sealing ring mounting groove, and 14-makes up this special envelope sealing ring, 15-hydraulic control piston-conical surface seal main valve plug, the 16-valve seat, 19-soket head cap screw, 20-restricting element, the 21-junction plate, 22-valve gap control hydraulic oil access way, 23-soket head cap screw installing hole, 24-valve bonnet seal mounting groove, 25-valve pocket control hydraulic oil access way, 26-piston mating holes, 27-valve pocket bolt hole, 28-Glais ring mounting groove, 29-lower spring chamber, the 30-frustum, 31-valve seat top seal mounting groove, 32-valve seat liquid flows to out the duct, the 33-primary valve, 34-valve seat bolt hole, 35-conical seal (contact) face, 36-valve seat lower seal mounting groove, 37-restricting element installing hole, 38-step transitional fluid passage lower end, 39-sealing steel loop mounting groove, 40-step transitional fluid passage upper end, 41-junction plate bolt connecting through hole, 42-junction plate screwed hole.
The specific embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
By Fig. 1 in conjunction with shown in Figure 2, the novel Operating Pressure pressure balance of this kind control device constitutes after being connected by the pressure balance control device housing 1 that has upper and lower big flange and FIH master access way 8 and two identical hydraulic control horn-break switch valves 2,2 ' by bolt 3, nut 4 and joint ring 5.Two hydraulic control horn-break switch valve symmetries are installed in the both sides of pressure balance control device housing correspondence.Wherein, details are as follows for the concrete structure of each ingredient:
As shown in Figure 3, described hydraulic control horn-break switch valve constitutes after mainly being tightly connected in regular turn by hydraulic control piston-conical surface seal main valve plug 15, preloading spring 11, valve pocket 9, valve gap 6, valve seat 16, restricting element 20 and junction plate 21.All have the sealing mounting groove on hydraulic control piston-conical surface seal main valve plug 15, valve gap 6, valve seat 16 and the junction plate 21.As shown in Figure 8, open and on hydraulic control piston-conical surface seal main valve plug 15, be called Glais ring mounting groove 28, the combination sealing Glais ring that adopts polytetrafluoroethylene (PTFE) and acrylonitrile-butadiene rubber formation wherein can be installed; As shown in Figure 4, open and on valve gap 6, be called valve bonnet seal mounting groove 24, wherein " O " RunddichtringO and back-up ring can be installed; As shown in Figure 9, open three the sealing mounting grooves that have on valve seat, be respectively valve seat top seal mounting groove 31, make up this special envelope sealing ring mounting groove 12 and valve seat lower seal mounting groove 36, wherein in the valve seat upper and lower part sealing mounting groove " O " RunddichtringO and back-up ring are installed all, are made up this special envelope sealing ring of combination that adopts polytetrafluoroethylene (PTFE) and acrylonitrile-butadiene rubber to constitute can be installed in this special envelope sealing ring mounting groove 12; As shown in figure 11, the sealing mounting groove of opening on junction plate is called sealing steel loop mounting groove 39, and the sealing steel loop wherein is installed.
As shown in Figure 8, hydraulic control piston-conical surface seal main valve plug 15 integral body are T-shape, its upper end core have embed for preloading spring 11, the bottom is obconic lower spring chamber 29, its lower end then is inverted frustum 30.
As shown in Figure 4, have valve gap control hydraulic oil access way 22 on the sidewall of valve gap 6, the core in valve gap 6 lower ends has the upper spring chamber 7 that embeds for preloading spring 11, and described valve gap control hydraulic oil access way 22 is connected with upper spring chamber 7.
Show as Fig. 6, on the sidewall of valve pocket 9, have valve pocket control hydraulic oil access way 25, have the piston mating holes 26 that matches with hydraulic control piston-conical surface seal main valve plug 15 in the perforation of the center of valve pocket 9, described valve pocket control hydraulic oil access way 25 is connected with piston mating holes 26.
As shown in Figure 9, have many steps valve seat liquid that run through and that have a conical seal (contact) face 35 at the core of valve seat 16 and flow to out duct 32, the bottom that this valve seat liquid flows to out duct 32 is a restricting element installing hole 37, and the sidewall that this valve seat liquid flows to out duct 32 connects with the primary valve of opening on valve seat 16 sidewalls 33.
As shown in figure 11, the core of junction plate 21 has a step transitional fluid passage that runs through, match with the bottom of valve seat 16 in this step transitional fluid passage upper end 40,38 of this step transitional fluid passage lower ends communicate with FIH master access way 8.
The overall package step of this kind of device is as follows:
After described hydraulic control piston-conical surface seal main valve plug 15 installs combination sealing Glais ring 10, the part above it is packed in the piston mating holes 26 of valve pocket 9, the piston mating holes 26 with valve pocket is separated into upper and lower two hydraulic working oil chambeies thus.Then pack into the valve seat liquid of valve seat 16 of the lower part of hydraulic control piston-conical surface seal main valve plug is flow to out in the duct 32, constitute sealing, prevent that hydraulic oil and FIH from leaking mutually with this special envelope sealing ring 14 of the combination that has installed.Simultaneously, the conical seal (contact) face 35 in the conical surface on hydraulic control piston-conical surface seal main valve plug 15 bottom frustums 30 and the valve seat 16 forms sealing, the fluid break-make in the control well.After valve gap 6 bottoms are installed " O " RunddichtringO and baffle ring, push down the preloading spring 11 of putting into hydraulic control piston-conical surface seal main valve plug 15 lower spring chambeies 29, the top of preloading spring 11 is in the upper spring chamber 7 of valve gap 6, then can be from piston mating holes 26 be packed on the top of valve pocket 9 into, form circumferential seal, prevent control piston epicoele hydraulic fluid leak.Afterwards, in the valve seat top seal mounting groove 31 of valve seat 16, install sealing " O " RunddichtringO and baffle ring after, can be from piston mating holes 26 be packed on the top of valve pocket 9 into, form circumferential seal, prevent control piston cavity of resorption hydraulic fluid leak.In like manner, in the valve seat lower seal mounting groove 36 of valve seat 16, install sealing " O " RunddichtringO and baffle ring after, can from are packed in step transitional fluid passage upper end 40 on the top of junction plate 21 into, form circumferential seal, prevent that FIH from letting out.At last, pass the junction plate screwed hole 42 on soket head cap screw installing hole 23, valve pocket bolt hole 27, valve seat bolt hole 34 and the junction plate 21 of valve gap 6 with soket head cap screw 19 respectively and match, thereby hydraulic control horn-break switch valve is assembled into one.
After this, as Fig. 1, Fig. 2, shown in Figure 11, bolt 3 is installed on the pressure balance control device housing 1, joint ring 5 is packed in the sealing steel loop mounting groove 39 on the junction plate 21, junction plate bolt connecting through hole 41 on the junction plate 21 is aimed at respectively, packed into bolt 3, reinstall nut 4, tighten, promptly finish the overall package of the novel Operating Pressure pressure balance of this kind control device.After assembling is finished, being periphery slipper seal pair between hydraulic control piston-conical surface seal main valve plug 15 and the valve pocket 9, is periphery slipper seal pair between hydraulic control piston-conical surface seal main valve plug 15 and the valve seat 16.
When carrying out Operating Pressure, the novel Operating Pressure pressure balance of this kind control device is installed between two ram preventers in the wellhead blowout preventer.After the wellhead assembly installation, with the hydraulic fluid port of the valve gap of two hydraulic control horn-break switch valves in this device control hydraulic oil access way 22 and valve pocket control hydraulic oil access way 25 respectively with hydraulic control panel on the control valve actuator port connect.Primary valve with 1 hydraulic control horn-break switch valve connects the well head high pressure then, as pressurization control valve, realizes the pressurization equilibration of lower flashboard preventer; Other primary valve of 1 hydraulic control horn-break switch valve is connect blow-down pipe,, realize the release balance of upper flashboard preventer as unloading control valve.The main valve open of two hydraulic control horn-break switch valves and closing is controlled by hydraulic valve on the remote console.When pressure oil feeds the epicoele of hydraulic control piston-conical surface seal main valve plug 15, the oil return of hydraulic control piston cavity of resorption, the precompression of piston upper end hydraulic coupling and preloading spring overcomes the active force of lower end liquid and the frictional resistance of sealing pair, hydraulic control piston-conical surface seal main valve plug is depressed, sealing cone keeps fluid-tight engagement, with the main valve passageway shuts off, switch valve is in closed condition.When the cavity of resorption of pressure oil feeding hydraulic control piston-conical surface seal main valve plug 15, the oil return of hydraulic control piston upper chamber; The active force of piston lower end hydraulic coupling and lower end liquid overcomes the precompression of preloading spring and the frictional resistance of sealing pair, shift hydraulic control piston-conical surface seal main valve plug 15 onto top, sealing cone is opened, the main valve passage is opened, switch valve is in open mode, therefore can be called pressurization equilibration valve and release equalizing valve to these two hydraulic control horn-break switch valves.
In the novel Operating Pressure pressure equaliser of this kind, be connected as a whole with a pressure balance control device housing two hydraulic control horn-break switch valves by joint ring by bolt and nut.Two hydraulic control horn-break switch valve symmetries are installed in the both sides of pressure balance control device housing correspondence.Liquid access way in two hydraulic oil access ways and the well is all arranged on each control valve.The hydraulic oil access way is in order to connect hydraulic control mouth on the console; The liquid access way is in order to connect well mesohigh or well head pressure relief device in the well.The Operating Pressure pressure equaliser couples together with bolt and nut and well head Operating Pressure device by upper and lower big flange and joint ring on the housing during work, and then connects liquid turnover pipeline in hydraulic oil and the well respectively.
In this kind device, hydraulic control piston and valve pocket are formed the periphery slipper seal pair of hydraulic-driven control section.The secondary lattice of polytetrafluoroethylene (PTFE) and acrylonitrile-butadiene rubber combination that adopt of sealing come the cast formula.Polytetrafluoroethylmaterial material can reduce frictional resistance and wearing and tearing as friction pair; The elastic deformation of rubber o-ring be used to provide and compensating sealing surface between contact pressure, thereby guarantee that movable sealing is respond well.In addition, the upper and lower end of hydraulic control piston is designed to different effective active areas, in order to guarantee to open and close the hydraulic-driven power of control valve conical surface seal, thereby the turning on and off of pressure fluid in the control well head seal cavity is to realize the pressure balance in the ram preventer opening and closing process.Because in hydraulic control piston-conical surface seal main valve plug, main valve plug and control piston are rigidly connected and are that one, main valve plug and valve seat not only form the conical surface seal pair of main valve, but also form the slipper seal pair of main valve plug and valve seat periphery.Secondary this special envelope form that adopts polytetrafluoroethylene (PTFE) and acrylonitrile-butadiene rubber combination of the slipper seal of main valve plug and valve seat periphery is had complementary advantages the low frictional properties of polytetrafluoroethylene (PTFE) and the elasticity of rubber, realizes good movable sealing.The conical surface seal pair guarantees sealing by the hydraulic coupling that acts on the piston end surface.
In a word, the novel Operating Pressure pressure equaliser of this kind is simple in structure, compact, and the Seal Design dependable performance adopts hydraulic control, and is easy to operate, is easy to realize automatic control.
Claims (3)
1, a kind of novel Operating Pressure pressure balance control device, by the pressure balance control device housing (1) that has upper and lower big flange and FIH master access way (8) the hydraulic control horn-break switch valve (2 identical with two, 2 ') connect the back formation by bolt, nut and joint ring, it is characterized in that:
Described hydraulic control horn-break switch valve constitutes after mainly being tightly connected in regular turn by hydraulic control piston-conical surface seal main valve plug (15), preloading spring (11), valve pocket (9), valve gap (6), valve seat (16), restricting element (20) and junction plate (21), all has the sealing mounting groove on hydraulic control piston-conical surface seal main valve plug (15), valve gap (6), valve seat (16) and the junction plate (21);
Wherein, hydraulic control piston-conical surface seal main valve plug (15) integral body is T-shape, its upper end core have embed for preloading spring (11), the bottom is obconic lower spring chamber (29), its lower end then is an inverted frustum (30);
Wherein, on the sidewall of valve gap (6), have valve gap control hydraulic oil access way (22), core in valve gap (6) lower end has the upper spring chamber (7) that embeds for preloading spring (11), and described valve gap control hydraulic oil access way (22) is connected with upper spring chamber (7);
Wherein, on the sidewall of valve pocket (9), have valve pocket control hydraulic oil access way (25), have the piston mating holes (26) that matches with hydraulic control piston-conical surface seal main valve plug (15) in the perforation of the center of valve pocket (9), described valve pocket control hydraulic oil access way (25) is connected with piston mating holes (26);
Wherein, have many steps valve seat liquid that run through and that have a conical seal (contact) face (35) at the core of valve seat (16) and flow to out duct (32), the bottom that this valve seat liquid flows to out duct (32) is restricting element installing hole (37), and the sidewall that this valve seat liquid flows to out duct (32) connects with the primary valve of opening on valve seat (16) sidewall (33);
Wherein, the core of junction plate (21) has a step transitional fluid passage that runs through, match with the bottom of valve seat (16) in this step transitional fluid passage upper end (40), this step transitional fluid passage lower end (38) then communicates with FIH master access way (8).
2, a kind of novel Operating Pressure pressure balance control device according to claim 1, it is characterized in that: be periphery slipper seal pair between described hydraulic control piston-conical surface seal main valve plug (15) and the valve pocket (9), the combination sealing Glais ring (10) that adopts polytetrafluoroethylene (PTFE) and acrylonitrile-butadiene rubber to constitute is installed in the Glais ring mounting groove (28) on hydraulic control piston-conical surface seal main valve plug (15).
3, a kind of novel Operating Pressure pressure balance control device according to claim 1, it is characterized in that: be periphery slipper seal pair between described hydraulic control piston-conical surface seal main valve plug (15) and the valve seat (16), this special envelope sealing ring (14) of combination that adopts polytetrafluoroethylene (PTFE) and acrylonitrile-butadiene rubber to constitute is installed in this special envelope sealing ring mounting groove (12) of the combination on valve seat (16) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200911315U CN201269071Y (en) | 2008-10-17 | 2008-10-17 | Novel pressure balance control apparatus for operation under pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200911315U CN201269071Y (en) | 2008-10-17 | 2008-10-17 | Novel pressure balance control apparatus for operation under pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201269071Y true CN201269071Y (en) | 2009-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200911315U Expired - Fee Related CN201269071Y (en) | 2008-10-17 | 2008-10-17 | Novel pressure balance control apparatus for operation under pressure |
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| Country | Link |
|---|---|
| CN (1) | CN201269071Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235499A (en) * | 2010-04-22 | 2011-11-09 | 中国石油化工集团公司 | Manhole with plug |
| CN113167046A (en) * | 2018-12-06 | 2021-07-23 | 利勃海尔-韦尔克嫩青有限公司 | Special civil engineering machine, in particular mud wall cutter |
-
2008
- 2008-10-17 CN CNU2008200911315U patent/CN201269071Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235499A (en) * | 2010-04-22 | 2011-11-09 | 中国石油化工集团公司 | Manhole with plug |
| CN113167046A (en) * | 2018-12-06 | 2021-07-23 | 利勃海尔-韦尔克嫩青有限公司 | Special civil engineering machine, in particular mud wall cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090708 Termination date: 20111017 |