CN210830586U - Puncture-corrosion-resistant high-pressure throttle valve - Google Patents
Puncture-corrosion-resistant high-pressure throttle valve Download PDFInfo
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- CN210830586U CN210830586U CN201921543121.5U CN201921543121U CN210830586U CN 210830586 U CN210830586 U CN 210830586U CN 201921543121 U CN201921543121 U CN 201921543121U CN 210830586 U CN210830586 U CN 210830586U
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Abstract
A puncture-resistant high-pressure throttle valve comprises a valve body and a choke, wherein the valve body is provided with a valve cavity, the valve cavity is a T-shaped three-way passage and is a vertical passage and two horizontal passages which are concentrically arranged, the choke is arranged in one horizontal passage, and a passage port of the other horizontal passage is sealed; the channel opening of the vertical channel is used as the inflow end of the valve cavity, and the channel opening of the horizontal channel containing the oil nozzle is used as the outflow end of the valve cavity; the high-pressure throttle valve further comprises a flowing short section which is of a straight pipe structure, and one end port of the flowing short section is communicated with the outflow end of the valve cavity of the valve body. The high-pressure fluid of the oil nozzle after the spraying end mainly impacts and falls onto the flowing short section, the high-pressure fluid acting in the valve body is prevented from being corroded and corroded, and the service life of the high-pressure throttling valve is prolonged.
Description
Technical Field
The utility model relates to a choke valve technical field is returned to the shale well, specifically is a resistant thorn loses high pressure choke valve.
Background
Referring to fig. 1, the conventional fixed throttle valve includes a valve body 1, a nozzle tip 2 and a plug 3, the valve body 1 has a valve cavity, the valve cavity is a T-shaped three-way passage, and is a vertical downward vertical passage and two concentrically arranged horizontal passages, the nozzle tip 2 is arranged in the horizontal passage on the left side in a threaded connection manner, and the passage opening of the horizontal passage on the right side is plugged by the plug 3, so that the horizontal passage is completely sealed. The port of this horizontal channel on the left side serves as the inflow end of the valve chamber of the valve body 1 for the inflow of fluid. The passage opening of the vertical passage is used as the outflow end of the valve cavity of the valve body 1, and is used for the fluid passing through the valve cavity of the valve body 1 to flow out from the outflow end of the valve cavity of the valve body 1. The traditional fixed throttle valve mainly has the following defects:
firstly, the high-pressure fluid passing through the oil nozzle 2 directly acts on and impacts the plug in the valve cavity of the valve body 1, so that the plug 3 is subjected to erosion and the like, and the service life of the plug 3 is shortened.
Secondly, the fluid gets into from the left end of glib 2, and the left end terminal surface of glib 2 is little, leads to the atress of glib 2 mainly to act on glib 2 correspond and the horizontal passage between the screw thread to destroy glib 2 and correspond the connection structure between the horizontal passage, reduce the life of valve body and glib 2.
Thirdly, when the oil nozzle 2 is installed, the oil nozzle 2 must be concentrically arranged with a corresponding horizontal channel, if the oil nozzle 2 is improperly installed, and the oil nozzle 2 is caused to be eccentric, high-pressure fluid flowing through the oil nozzle 2 can act on the inner wall of the valve cavity of the valve body 1, so that the inner wall of the valve cavity of the valve body 1 is caused, even threads and plugs 3 between the oil nozzle 2 and the corresponding horizontal channel are rapidly corroded, and the service life of the valve body 1, the oil nozzle 2 and the plugs 3 is shortened.
Disclosure of Invention
The utility model aims to provide a: aiming at the defects of the prior art, the anti-corrosion high-pressure throttle valve not only ensures that the spraying end of the oil nozzle directly corresponds to the flow-out end of the valve cavity of the valve body, avoids the direct action of high-pressure fluid of the oil nozzle on the plug after the spraying end, but also ensures that the high-pressure fluid of the oil nozzle mainly impacts the flowing short section and avoids the high-pressure fluid acting in the valve body to corrode and corrode the valve cavity of the valve body and prolong the service life of the high-pressure throttle valve.
The technical scheme adopted by the utility model is that the puncture-resistant high-pressure throttle valve comprises a valve body, a plug and a choke, wherein the valve body is provided with a valve cavity which is a T-shaped three-way passage and is a vertical passage and two horizontal passages concentrically arranged, the choke is arranged in one horizontal passage, and the passage port of the other horizontal passage is sealed; the channel opening of the vertical channel is used as the inflow end of the valve cavity, and the channel opening of the horizontal channel containing the oil nozzle is used as the outflow end of the valve cavity; the high-pressure throttle valve further comprises a flowing short section which is of a straight pipe structure, and one end port of the flowing short section is communicated with the outflow end of the valve cavity of the valve body.
The inner peripheral wall of the flowing short section is coated with an inner wall layer made of an anti-corrosion alloy material.
The length of the flow nipple is 0.8-1.5 m.
The left end face of the oil nozzle is small, and the right end face of the oil nozzle is large.
Further, a threaded connection is formed between the outer peripheral wall surface of the oil nozzle and the inner peripheral wall surface of the horizontal channel correspondingly.
Further, the oil nozzle is made of 42CrMO ultrahigh-strength steel. Furthermore, an inner wall layer made of an alloy material resistant to corrosion and erosion is sprayed on the inner peripheral wall of the oil nozzle.
The length of the plug is 18-22 cm.
The utility model has the advantages that:
1. the utility model discloses not only make the blowout end of glib direct corresponding valve body valve pocket flow end, avoided this glib direct action of high-pressure fluid after spouting the end on the plug, this glib mainly strikes through the high-pressure fluid after spouting the end in addition and has fallen to the nipple joint that flows, has avoided the high-pressure fluid to act on in the valve body, stings and loses, corrodes the valve body valve pocket, increases the life of high-pressure choke valve. The concentric requirement of installation between the oil nozzle and the corresponding horizontal channel is reduced, and the installation flatness is increased. The method is particularly suitable for the requirements of ground flowback test throttling and pressure control operation of ultrahigh pressure oil and gas wells and large-scale sand fracturing shale gas wells, and improves the erosion resistance and the service life of a throttling system.
2. The utility model discloses in, the spraying has the one deck to be made by resistant thorn loses, the alloy material of corruption inner wall layer on the internal perisporium of flowing nipple joint. Further, the anti-erosion capability of the flow nipple is enhanced.
3. The utility model discloses in, the left end terminal surface of glib is little, the right-hand member terminal surface is big. The matched fluid enters the valve body from the inflow end of the valve cavity of the valve body and acts on the large end face of the right end of the oil nozzle, so that the stress of the oil nozzle is not simply concentrated on the threaded connection part of the oil nozzle and the corresponding horizontal channel but is borne and dispersed by the end face of the oil nozzle.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of the prior art.
The reference symbols in FIG. 1 mean: 1-a valve body; 2-oil nozzle; 3-plug.
Fig. 2 is an exploded schematic view of the present invention.
The reference symbols in FIG. 2 mean: 4-a valve body; 41-valve cavity; 42-inflow end of valve cavity; 43-the outflow end of the valve chamber; 5-oil nozzle; 6-plug; 7-flow nipple.
Detailed Description
Referring to FIG. 2: the utility model relates to a resistant thorn loses high-pressure choke valve, including valve body 4, glib talker 5, end cap 6 and flowing nipple joint 7.
The valve body 4 is provided with a valve cavity 41, the valve cavity 41 is a T-shaped three-way passage and is a vertical passage and two horizontal passages concentrically arranged, a choke 5 is arranged in one horizontal passage, an annular groove is formed in the periphery of the choke 5, and an O-shaped sealing ring is arranged in the annular groove to improve the sealing performance. The left end face of the oil nozzle 5 is small, and the right end face of the oil nozzle is large.
Preferably, a threaded connection is formed between the outer peripheral wall surface of the oil nozzle 5 and the inner peripheral wall surface of the horizontal channel, and meanwhile, the inner peripheral wall of the horizontal channel corresponding to the oil nozzle 5 is provided with a stepped through hole, so that the oil nozzle 5 can better abut against the stepped through hole.
Preferably, the oil nozzle 5 is made of 42CrMO ultrahigh-strength steel. Preferably, the inner peripheral wall of the oil nozzle 5 is coated with an inner wall layer made of an alloy material with erosion and corrosion resistance.
And the channel opening of the other horizontal channel of the T-shaped three-way channel is sealed. In this embodiment, the plug 6 is used for sealing (the plug 6 is screwed into the channel opening of the other horizontal channel of the T-shaped three-way channel to keep sealing).
The channel port of the vertical channel of the T-shaped three-way channel is used as the inflow end 42 of the valve cavity, and the channel port of the horizontal channel containing the oil nozzle 5 is used as the outflow end 43 of the valve cavity; the flow nipple 7 is of a straight pipe structure, and a port at one end of the flow nipple 7 is communicated with an outflow end 43 of the valve cavity of the valve body 4 (the port at one end of the flow nipple 7 is communicated and fixed with the outflow end 43 of the valve cavity of the valve body 4 through a flange and/or a threaded connecting piece, or can be in welded connection).
According to the above, the utility model discloses not only make the blowout end of glib 5 directly correspond the outflow end 43 of the 4 valve pockets of valve body, avoided this glib 5 directly to act on end cap 6 through the high-pressure fluid after the blowout end, this glib 5 mainly strikes to have fallen on the nipple joint 7 that flows through the high-pressure fluid after the blowout end in addition, has avoided high-pressure fluid to act on in valve body 4, stings to corrode, corrodes 4 valve pockets 41 of valve body, increases the life of high-pressure choke valve. The concentric requirement of installation between the oil nozzle 5 and the corresponding horizontal channel is reduced, and the installation flatness is increased. The method is particularly suitable for the requirements of ground flowback test throttling and pressure control operation of ultrahigh pressure oil and gas wells and large-scale sand fracturing shale gas wells, and improves the erosion resistance and the service life of a throttling system.
The inner peripheral wall of the flow nipple 7 is coated with an inner wall layer made of an anti-corrosion alloy material. The flow nipple 7 has a length of 0.8m to 1.5m (e.g., 0.8m, 1m, or 1.5 m). The flowing short section 7 has the functions of long flow guiding and reducing the puncture and corrosion probability of the oil nozzle and the oil nozzle sleeve, and the alloy plug 6 is changed from directly bearing puncture and corrosion to only bearing high pressure. The pressure-bearing and anti-corrosion capability of the right end of the oil nozzle is improved, and the pressure-resisting capability of the oil nozzle is increased from 105MPa to 120 MPa. The nozzle tip upstream section can be observed and cleared up through end cap 6, and the nozzle tip can also be increased the terminal surface and fixed except that adopting the screw thread to fix, and the stress point increases, improves nozzle tip stability.
The length of the plug 6 is 18-22 cm (for example, 18cm, 20cm or 22 cm).
In addition, an inner wall layer made of an alloy material resistant to corrosion and erosion is sprayed on the inner circumferential wall of the flow nipple 7. Further, the anti-erosion capacity of the flow nipple 7 is enhanced; the left end face of the oil nozzle 5 is small, the right end face of the oil nozzle 5 is large, matched fluid enters the valve body 4 from the inflow end 42 of the valve cavity of the valve body 4 and acts on the large end face of the right end of the oil nozzle 5 firstly, and therefore stress of the oil nozzle 5 cannot be simply concentrated on the threaded connection position of the oil nozzle 5 and a corresponding horizontal channel, but is borne and dispersed by the end face of the oil nozzle 5.
The working principle is as follows: the fluid at the upstream of the flow enters the oil nozzle through an inlet flange short section on the inflow end 42 of the valve cavity of the valve body 4, and the high-speed fluid enters the flow short section 7 after being throttled by the oil nozzle and then enters the subsequent downstream open flow after being buffered by the flow short section 7.
The above detailed description is only for the purpose of illustration, but not for the purpose of limitation. Although the present invention has been described in detail with reference to the specific embodiments thereof, it will be understood by those skilled in the art that: the above-mentioned specific technical solutions can still be modified, or some technical features thereof can be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the present invention in its essence.
Claims (8)
1. A stab-resistant high-pressure throttling valve comprises a valve body, a plug and a choke, wherein the valve body is provided with a valve cavity which is a T-shaped three-way passage and is a vertical passage and two horizontal passages concentrically arranged, the choke is arranged in one horizontal passage, and a passage port of the other horizontal passage is sealed; the method is characterized in that:
the channel opening of the vertical channel is used as the inflow end of the valve cavity, and the channel opening of the horizontal channel containing the oil nozzle is used as the outflow end of the valve cavity;
the high-pressure throttle valve further comprises a flowing short section which is of a straight pipe structure, and one end port of the flowing short section is communicated with the outflow end of the valve cavity of the valve body.
2. The erosion resistant high pressure throttle valve of claim 1, wherein: the inner peripheral wall of the flowing short section is coated with an inner wall layer made of an anti-corrosion alloy material.
3. The erosion resistant high pressure throttle valve of claim 1, wherein: the length of the flow nipple is 0.8-1.5 m.
4. The erosion resistant high pressure throttle valve of claim 1, wherein: the left end face of the oil nozzle is small, and the right end face of the oil nozzle is large.
5. The erosion resistant high pressure throttle valve of claim 1 or 4, wherein: and the outer peripheral wall surface of the oil nozzle is correspondingly in threaded connection with the inner peripheral wall surface of the horizontal channel.
6. The erosion resistant high pressure throttle valve of claim 1 or 4, wherein: the oil nozzle is made of 42CrMO ultrahigh-strength steel.
7. The erosion resistant high pressure throttle valve of claim 1 or 4, wherein: the inner peripheral wall of the oil nozzle is coated with an inner wall layer made of an anti-corrosion alloy material.
8. The erosion resistant high pressure throttle valve of claim 1, wherein: the length of the plug is 18-22 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921543121.5U CN210830586U (en) | 2019-09-17 | 2019-09-17 | Puncture-corrosion-resistant high-pressure throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921543121.5U CN210830586U (en) | 2019-09-17 | 2019-09-17 | Puncture-corrosion-resistant high-pressure throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210830586U true CN210830586U (en) | 2020-06-23 |
Family
ID=71251941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921543121.5U Active CN210830586U (en) | 2019-09-17 | 2019-09-17 | Puncture-corrosion-resistant high-pressure throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210830586U (en) |
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2019
- 2019-09-17 CN CN201921543121.5U patent/CN210830586U/en active Active
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