CN209856402U - Cage type throttle valve - Google Patents
Cage type throttle valve Download PDFInfo
- Publication number
- CN209856402U CN209856402U CN201920645679.8U CN201920645679U CN209856402U CN 209856402 U CN209856402 U CN 209856402U CN 201920645679 U CN201920645679 U CN 201920645679U CN 209856402 U CN209856402 U CN 209856402U
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- valve stem
- cage
- valve
- section
- plug
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Abstract
本实用新型公开了一种笼套式节流阀，属于油气田开发技术领域，包括阀体，所述阀体中包括入口流道、出口流道、阀杆腔，阀杆腔内安装有阀杆组合体，在入口流道与阀杆腔结合处设有出口缩颈，阀杆组合体在靠近出口颈缩端设有筒状的柱塞，出口缩颈内抵紧安装有耐磨套，入口流道与阀杆腔连接，且阀杆腔在连接处设有一圈扩大的环形流道，所述阀杆组合体在靠近耐磨套端设有锥段堵头。本实用新型通过对天然气在流道的运动路径进行研究，进而对密封用的阀杆结构进行改进，以克服现有技术存在的更换锥段堵头的问题，同时提供一种现有技术中没有存在的笼套式节流加锥形段节流组合在一起的节流阀，可以完全截止气体向低压端泄漏。
The utility model discloses a cage type throttle valve, which belongs to the technical field of oil and gas field development, and comprises a valve body, the valve body includes an inlet flow channel, an outlet flow channel, and a valve stem cavity, and a valve stem is installed in the valve stem cavity The assembly has an outlet constriction at the junction of the inlet flow channel and the valve stem cavity. The valve stem assembly is provided with a cylindrical plunger near the outlet constriction. A wear-resistant sleeve is installed in the outlet constriction. The flow channel is connected with the valve stem cavity, and the valve stem cavity is provided with an enlarged annular flow channel at the joint, and the valve stem assembly is provided with a tapered plug at the end close to the wear-resistant sleeve. The utility model studies the movement path of natural gas in the flow channel, and then improves the structure of the valve rod used for sealing, so as to overcome the problem of replacing the cone plug in the prior art, and at the same time provides a The throttle valve combined with the existing cage type throttle and conical section throttle can completely cut off the leakage of gas to the low pressure end.
Description
Technical Field
The utility model belongs to the technical field of oil gas field development, specifically a cage shell type choke valve that is used for the natural gas exploitation pressure regulating and ends usefulness.
Background
The throttle valve is a key device in natural gas exploitation, and controls the flow of fluid by changing the throttle cross section. Because at the in-process of natural gas exploitation, atmospheric pressure is higher in the pit, if directly let the natural gas strike well head pipeline, cause the damage easily to the manifold, consequently need adopt the choke valve, because the medium velocity of flow is very big, produces the vortex, it is very big to case, disk seat erosion, wearing and tearing, and a lot of choke valves are direct to set up the toper section at valve rod top to detachable to directly change the toper section end cap after the erosion destroys, like application number 201820976846.2 "the choke valve of a novel case", but this kind of structure has a great deal of problem: 1. because the medium has fast flow speed between the throttling valve core and the valve seat, erosion and shaking exist on the conical section plug, if the connection is not stable enough, the internal shaking is caused, and the connection section is loosened and even worn; 2, the processing difficulty is large, the disassembly is frequent, and the service life of the device which is a throttle valve and has tens of thousands of cost is easy to be reduced. In addition, in the prior art, no device for plugging by combining the cage type throttle valve and the conical section plug is provided on the cage type throttle valve, and two valves are usually required to be connected in series to realize two common working effects, so that the processing and installation difficulty is increased.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a cage formula choke valve is studied at the motion route of runner through to the natural gas, and then improves the valve rod structure of sealed usefulness to overcome the problem of the change conic section end cap that prior art exists.
The technical scheme of the utility model as follows:
a cage type throttle valve comprises a valve body, wherein a through hole is formed in the middle of the valve body, an inlet flow passage perpendicular to the through hole is formed in the side face of the through hole, one side of the through hole is used as an outlet flow passage, the other side of the through hole is used as a valve rod cavity, a valve rod assembly is installed in the valve rod cavity, an outlet necking is arranged at the joint of the inlet flow passage and the valve rod cavity, a cylindrical plunger is arranged at the end, close to the outlet necking, of the valve rod assembly, a wear-resistant sleeve is installed in the outlet necking in a propping mode, the inlet flow passage is connected with the valve rod cavity, a circle of enlarged annular flow passage is arranged at the joint of the valve rod cavity, a cage is installed in the valve rod cavity corresponding to the annular flow passage, one end of the cage is provided with a gasket and props against the valve rod cavity through the gasket, the other end of the cage is connected with a cage pressing ring, the side surface of the valve cover and the side surface of the valve body are both provided with uniform threads, the threads are connected with union nuts to tightly press the valve cover on the valve body, the other end of the valve cover is provided with an electric head connecting disc, a copper sleeve and a pressing ring are arranged between the valve cover and the electric head connecting disc, and the end surfaces of the copper sleeve and the pressing ring are tightly attached to the valve cover and the electric head connecting disc;
the valve rod assembly is provided with a conical section plug close to the end of the wear-resistant sleeve.
Furthermore, the conical section plug and the valve rod main body form a valve rod assembly, the conical section plug and the valve rod main body are of an integrated structure, a valve rod neck section is arranged at the joint of the conical section plug and the valve rod main body, and the diameter of the valve rod neck section is smaller than that of the valve rod main body;
the end face of the inner side of the wear-resistant sleeve, corresponding to the slope of the conical section plug arranged on the conical section plug, is a wear-resistant sleeve slope, the wear-resistant sleeve slope and the conical section plug slope are kept parallel and are mutually attached during contact, and the sealing of the valve rod cavity and the outlet flow channel is realized.
In an embodiment, preferably, the contact surface between the slope of the tapered plug and the slope of the wear-resistant sleeve is the position of the slope of the tapered plug, which is close to the root.
Furthermore, the slope of the conical section plug is divided into five equal parts of width from the section, the five equal parts are respectively taken as a first section to a fifth section from the part close to the top to the root, and the contact surface of the slope of the conical section plug and the wear-resistant sleeve is a fourth section closest to the root.
Further, the valve rod assembly is 316L steel, and the wear-resistant sleeve, the plunger piston and the cage sleeve are made of tungsten carbide hard alloy.
Furthermore, the top of the conical section plug is arc-shaped.
Further, the radian of the top of the conical section plug is 0.21 rad.
In another embodiment, preferably, the slope of the conical section plug is divided into five equal width sections from the section, the five equal width sections are respectively used as a first section to a fifth section from the position close to the top to the root, a circle of mounting groove is arranged on the fourth section of the conical section plug, and a circle of conical ring is arranged on the mounting groove and used as a plug ring.
Further, the valve rod assembly is made of X45 steel, the wear-resistant sleeve, the plunger piston and the cage sleeve are made of tungsten carbide hard alloy, and the plug ring is made of 316L steel.
A method for installing and disassembling a plug ring comprises the following steps: placing the plug ring into a heating furnace, heating to 1500 ℃, maintaining for 15-20 minutes, taking out, placing on an installation groove, and naturally cooling and fastening;
when the plugging ring needs to be disassembled, a pointed tool is directly used for cutting off the plugging ring from the side surface, the plugging ring is pried to be taken out, and then the next plugging ring is installed by the installation method.
Compared with the prior art, the utility model, its beneficial effect is:
1. the integrated conical section plug is adopted, so that possible looseness caused by the detachable conical section plug is reduced, and the processing difficulty and the alignment precision are reduced;
2. meanwhile, a scheme with a plug ring is provided, so that the problems of loss and fixation can be considered, and the stability is kept;
3. the neck section of the valve rod is relatively thinner and has certain deflection, so that the conical section plug and the wear-resistant sleeve have certain flexibility when being tightly attached, and the attachment is more stable;
4. the utility model provides a technical scheme combines the conic section end cap to the cage formula choke valve in, has changed prior art and has only the scheme that needle type valve and cage formula choke valve separately set up to processing scheme and the difficult point of structure homogeneous that need consider that the in-process that will combine together overcome, obtained the new scheme that prior art does not have with this in fact.
Drawings
Fig. 1 is a schematic structural view of the cage type throttle valve of the present invention;
FIG. 2 is a detailed view of area A of FIG. 1;
FIG. 3 is a detail view of FIG. 2;
fig. 4 is a schematic view of another embodiment of the conical section plug.
In the figure:
1 valve body, 2 wear-resistant sleeves, 3 cage sleeves, 4 plungers, 5 cage sleeve press rings, 6 inlet flow channels, 7 annular flow channels, 8 outlet flow channels, 9 press rings, 10 union nuts, 11 electric head connecting discs, 12 cushion blocks, 13 steel rings, 14 copper sleeves, 15 gaskets, 16 valve rod combination bodies, 17 valve covers, 18 outlet necking, 19 plunger slopes, 20 throttling holes, 21 valve rod main bodies, 22 valve rod neck sections, 23 cone section plugs, 24 wear-resistant sleeve slopes, 25 cone section plug slopes, 26 cage sleeve inner walls, 27 cone section tops and 28 plug rings.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example 1
As shown in figure 1, the cage 3 type throttle valve comprises a valve body 1, wherein a through hole is formed in the middle of the valve body 1, an inlet flow passage 6 perpendicular to the through hole is formed in the side face of the through hole, one side of the through hole is used as an outlet flow passage 8, the other side of the through hole is used as a valve rod cavity, a valve rod assembly 16 is installed in the valve rod cavity, an outlet necking 18 is arranged at the joint of the inlet flow passage 6 and the valve rod cavity, a cylindrical plunger 4 is arranged at the end close to the outlet necking, a wear-resistant sleeve 2 is tightly installed in the outlet necking 18, the inlet flow passage 6 is connected with the valve rod cavity, a circle of enlarged annular flow passage 7 is arranged at the joint of the valve rod cavity, a cage 3 is installed in the valve rod cavity corresponding to the annular flow passage 7, a gasket is arranged at one end of the cage 3 and tightly abuts against the valve rod cavity through the gasket, a cage pressing ring 95, the inner side of the valve cover 17 is also provided with a cushion block 12, the cushion block 12 is also tightly abutted against a cage sleeve pressing ring 95, the cage sleeve 3 is tightly pressed in the valve rod cavity, the side surface of the valve cover 17 and the side surface of the valve body 1 are both provided with uniform threads, the threads are connected with union nuts 10, the valve cover 17 is tightly pressed on the valve body 1, the other end of the valve cover 17 is provided with an electric head connecting disc 11, a copper sleeve 14 and a pressing ring 9 are arranged between the valve cover 17 and the electric head connecting disc 11, and the end surfaces of the copper sleeve 14 and the pressing ring 9 are tightly attached to the valve cover 17;
as shown in fig. 2, the valve stem assembly 16 is provided with a tapered plug 23 near the end of the wear-resistant sleeve 2.
As shown in fig. 3, the tapered section plug 23 and the valve rod main body 21 form a valve rod assembly 16, the tapered section plug 23 and the valve rod main body 21 are of an integrated structure, a valve rod neck section 22 is arranged at a joint of the tapered section plug 23 and the valve rod main body 21, and the diameter of the valve rod neck section 22 is smaller than that of the valve rod main body 21; the end face of the inner side of the wear-resistant sleeve 2, corresponding to the taper section plug slope 25 arranged on the taper section plug 23, is a wear-resistant sleeve slope 24, the wear-resistant sleeve slope 24 and the taper section plug slope 25 are kept parallel and are mutually attached during contact, and the valve rod cavity and the outlet flow channel 8 are sealed; the contact surface of the taper section plug slope 25 and the wear-resistant sleeve slope 24 is the position, close to the root, of the taper section plug slope 25; the slope of the tapered section plug 23 is divided into five equal parts of width from the section, the five equal parts are respectively taken as a first section to a fifth section from the part close to the top to the root, and the contact surface of the tapered section plug and the slope 24 of the wear-resistant sleeve is the fourth section closest to the root. The tight sealing is realized at the position because in the non-tight state, the natural gas passes through the throttling hole 20 on the cage 3 from the annular flow passage 7 and then enters the outlet flow passage 8, and when the natural gas flows through the cylindrical section on the side surface of the conical section, the natural gas cannot impact the inclined surface of the conical section plug 23 and can impact the third section to the fifth section downwards, so that the damage caused by the fluid impact is reduced.
The valve rod assembly 16 is 316L steel, and the wear-resistant sleeve 2, the plunger 4 and the cage 3 are all made of tungsten carbide hard alloy. The relatively soft 316L steel is attached to the tungsten carbide hard alloy, so that the sealing effect can be kept better.
Example 2
As shown in figure 1, the cage 3 type throttle valve comprises a valve body 1, wherein a through hole is formed in the middle of the valve body 1, an inlet flow passage 6 perpendicular to the through hole is formed in the side face of the through hole, one side of the through hole is used as an outlet flow passage 8, the other side of the through hole is used as a valve rod cavity, a valve rod assembly 16 is installed in the valve rod cavity, an outlet necking 18 is arranged at the joint of the inlet flow passage 6 and the valve rod cavity, a cylindrical plunger 4 is arranged at the end close to the outlet necking, a wear-resistant sleeve 2 is tightly installed in the outlet necking 18, the inlet flow passage 6 is connected with the valve rod cavity, a circle of enlarged annular flow passage 7 is arranged at the joint of the valve rod cavity, a cage 3 is installed in the valve rod cavity corresponding to the annular flow passage 7, a gasket is arranged at one end of the cage 3 and tightly abuts against the valve rod cavity through the gasket, a cage pressing ring 95, the inner side of the valve cover 17 is also provided with a cushion block 12, the cushion block 12 is also tightly abutted against a cage sleeve pressing ring 95, the cage sleeve 3 is tightly pressed in the valve rod cavity, the side surface of the valve cover 17 and the side surface of the valve body 1 are both provided with uniform threads, the threads are connected with union nuts 10, the valve cover 17 is tightly pressed on the valve body 1, the other end of the valve cover 17 is provided with an electric head connecting disc 11, a copper sleeve 14 and a pressing ring 9 are arranged between the valve cover 17 and the electric head connecting disc 11, and the end surfaces of the copper sleeve 14 and the pressing ring 9 are tightly attached to the valve cover 17;
as shown in fig. 2, the valve stem assembly 16 is provided with a tapered plug 23 near the end of the wear-resistant sleeve 2.
As shown in fig. 3, the tapered section plug 23 and the valve rod main body 21 form a valve rod assembly 16, the tapered section plug 23 and the valve rod main body 21 are of an integrated structure, a valve rod neck section 22 is arranged at a joint of the tapered section plug 23 and the valve rod main body 21, and the diameter of the valve rod neck section 22 is smaller than that of the valve rod main body 21; the end face of the inner side of the wear-resistant sleeve 2, corresponding to the taper section plug slope 25 arranged on the taper section plug 23, is a wear-resistant sleeve slope 24, the wear-resistant sleeve slope 24 and the taper section plug slope 25 are kept parallel and are mutually attached during contact, and the valve rod cavity and the outlet flow channel 8 are sealed;
as shown in fig. 4, the slope of the tapered plug 23 is divided into five equal width sections from the cross section, and the five equal width sections are respectively used as a first section to a fifth section from the top to the root, a circle of mounting groove is arranged on the fourth section, and a circle of tapered ring is arranged on the mounting groove as the plug ring 28. The reason that the plug ring 28 is arranged at the position to realize the tight sealing is that in the non-tight state, natural gas enters the outlet flow channel 8 from the annular flow channel 7 after passing through the throttling hole 20 on the cage 3, and when passing through the cylindrical section on the side surface of the conical section, the natural gas cannot impact the plug ring 28 arranged on the inclined surface of the conical section plug 23, but can impact the conical section plugs 23 from the third section to the fifth section downwards, so that the damage caused by the fluid impact is reduced.
The valve rod assembly 16 is made of X45 steel, the wear-resistant sleeve 2, the plunger 4 and the cage 3 are made of tungsten carbide hard alloy, and the plug ring 28 is made of 316L steel. The relatively soft 316L steel is attached to the tungsten carbide hard alloy, so that the sealing effect can be kept better.
Example 3
A method of installing and removing a plug ring 28, comprising the steps of: putting the plugging ring 28 into a heating furnace, heating to 1500 ℃, maintaining for 15-20 minutes, taking out and placing on the mounting groove, and naturally cooling and fastening;
when it is desired to remove the ring 28, the ring 28 is cut off directly from the side with a sharp tool and pried open for removal, and the next ring 28 is installed using the installation method described above.
Example 4
As shown in fig. 3, the top of the tapered plug 23 is circular arc, and specifically, the radian of the top of the tapered plug 23 is 0.21rad (12 degrees). The conical section top 27 adopts the angle, so that the best balance point can be obtained on the processing difficulty and the runner impact, and the damage to the conical section top 27 is reduced.
Also, the plunger ramp 19 is provided to reduce erosion.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the preferred embodiments, it is not limited to the present invention, and any skilled person in the art can make some modifications or equivalent embodiments without departing from the scope of the present invention, but all the technical matters of the present invention are within the scope of the present invention.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920645679.8U CN209856402U (en) | 2019-05-06 | 2019-05-06 | Cage type throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920645679.8U CN209856402U (en) | 2019-05-06 | 2019-05-06 | Cage type throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209856402U true CN209856402U (en) | 2019-12-27 |
Family
ID=68940422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920645679.8U Expired - Fee Related CN209856402U (en) | 2019-05-06 | 2019-05-06 | Cage type throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209856402U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030389A (en) * | 2019-05-06 | 2019-07-19 | 西南石油大学 | A kind of cage type throttling valve |
| WO2025140195A1 (en) * | 2023-12-29 | 2025-07-03 | 中国石油天然气集团有限公司 | Cage-type dual wedge throttle valve |
-
2019
- 2019-05-06 CN CN201920645679.8U patent/CN209856402U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030389A (en) * | 2019-05-06 | 2019-07-19 | 西南石油大学 | A kind of cage type throttling valve |
| CN110030389B (en) * | 2019-05-06 | 2023-10-27 | 西南石油大学 | Cage sleeve type throttle valve |
| WO2025140195A1 (en) * | 2023-12-29 | 2025-07-03 | 中国石油天然气集团有限公司 | Cage-type dual wedge throttle valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |