CN211500955U - Stainless steel valve box with packing sleeve structure - Google Patents
Stainless steel valve box with packing sleeve structure Download PDFInfo
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- CN211500955U CN211500955U CN201922418186.3U CN201922418186U CN211500955U CN 211500955 U CN211500955 U CN 211500955U CN 201922418186 U CN201922418186 U CN 201922418186U CN 211500955 U CN211500955 U CN 211500955U
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Abstract
The utility model discloses a stainless steel valve box with a packing sleeve structure, which replaces the existing alloy steel valve box through precipitation hardening stainless steel to improve the mechanical properties of high strength and high toughness and good corrosion resistance of a valve box shell, namely prolong the service life of the valve box; by additionally arranging the packing sleeve, the packing assembly is arranged in the packing sleeve, a layer of protective measures is added for the valve box body, high-pressure fluid and sand grains are prevented from directly contacting the valve box, only the packing sleeve needs to be replaced, and the service life of the valve box is prolonged; the packing cover is designed to be a Z-shaped structure, and two sealing rings are installed between the packing cover and the valve box in a matched mode, the Z-shaped structure increases the contact area of the packing cover and the valve box, the sealing effect can be improved, and the two sealing rings can also play a role in protecting the valve box.
Description
Technical Field
The utility model relates to a hydraulic end valve case technical field, concretely relates to take stainless steel valve case of packing cover structure.
Background
The hydraulic end valve box is a key wearing part on the fracturing pump, bears the reciprocating action of high pressure and corrosive media in the fracturing operation process, and because the structure of the inner cavity of the valve box is complex and the stress concentration phenomenon exists at the intersecting line position, the corrosion fatigue cracking becomes the main failure mode of the valve box. At present, a valve box applied to the domestic market is mainly made of an alloy steel material with approximate American standard number of 4330V, the material has excellent mechanical properties but limited corrosion resistance, can crack in a short time under the corrosion and abrasion action of high-pressure acid liquid and sand-carrying fracturing fluid, and is generally used for about 200 plus 300 hours under the working condition of shale gas with the operating pressure of 70-85 MPa. With the large-scale development of shale gas, alloy steel materials are not more and more suitable for zipper-type operation requirements, and frequent replacement increases the cost of users.
Meanwhile, in the long-time operation process of the valve box, under the conditions of scouring of high-pressure fluid and abrasion of sand grains, the phenomenon that the sealing surface of the valve box is eroded or abraded due to untimely replacement of a sealing element or incorrect installation can occur, particularly, the sealing position of a packing and a plunger is a dynamic seal, the sealing position is inconvenient to check, and the high-pressure fluid easily leaks, so that the valve box body is damaged, high-pressure media cannot be effectively sealed by the valve box, and the valve box can only be repaired or replaced.
Therefore, a long-service-life hydraulic end valve box is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects of the prior art and providing a stainless steel valve box with a packing sleeve structure, which replaces the prior alloy steel valve box shell by precipitation hardening stainless steel so as to improve the mechanical properties of high strength and high toughness and good corrosion resistance of the valve box shell, namely prolong the service life of the valve box; by additionally arranging the packing sleeve, the packing assembly is arranged in the packing sleeve, a layer of protective measures is added for the valve box, the situation that when the packing assembly fails in the operation process, high-pressure fluid and sand particles directly contact the valve box but only act on the packing sleeve is avoided, when the packing sleeve has the phenomenon of erosion or abrasion, only the packing sleeve needs to be replaced, the replacement frequency of the valve box is greatly reduced, and the service life of the valve box is prolonged; the packing cover is designed to be a Z-shaped structure, and two sealing rings are installed between the packing cover and the valve box in a matched mode, the Z-shaped structure increases the contact area of the packing cover and the valve box, the sealing effect can be improved, and the two sealing rings can also play a role in protecting the valve box.
The purpose of the utility model is achieved through the following technical measures: the utility model provides a take packing cover structure's stainless steel valve box, includes the valve box body, the valve box body passes through packing subassembly and plunger sealing connection, take packing cover structure's stainless steel valve box still includes the packing cover, packing cover and this body coupling of valve box, the packing unit mount is in the packing cover, the packing subassembly is used for realizing the sealing connection of packing cover and plunger.
Furthermore, the packing sleeve is of a Z-shaped structure.
Furthermore, the packing sleeve is provided with a positioning clamping table, and the valve box body is provided with a limiting clamping table for mounting the packing sleeve.
Furthermore, a valve box groove is formed in the valve box body and is formed in one side of the positioning clamping table, a main sealing ring is installed in the valve box groove, and the main sealing ring is used for sealing the valve box body and the packing sleeve.
Furthermore, a sealing groove is formed in the packing sleeve and is formed in the other side of the positioning clamping table, an auxiliary sealing ring is arranged in the sealing groove and is used for sealing the valve box body and the packing sleeve.
Further, the valve box body comprises a valve box shell, and the valve box shell is made of precipitation hardening stainless steel.
Compared with the prior art, the beneficial effects of the utility model are that: the existing alloy steel material valve box shell is replaced by precipitation hardening stainless steel so as to improve the mechanical properties of high strength and high toughness and good corrosion resistance of the valve box shell, namely the service life of the valve box is prolonged; by additionally arranging the packing sleeve, the packing assembly is arranged in the packing sleeve, a layer of protective measures is added for the valve box, the situation that when the packing assembly fails in the operation process, high-pressure fluid and sand particles directly contact the valve box but only act on the packing sleeve is avoided, when the packing sleeve has the phenomenon of erosion or abrasion, only the packing sleeve needs to be replaced, the replacement frequency of the valve box is greatly reduced, and the service life of the valve box is prolonged; the packing cover is designed to be a Z-shaped structure, and two sealing rings are installed between the packing cover and the valve box in a matched mode, the Z-shaped structure increases the contact area of the packing cover and the valve box, the sealing effect can be improved, and the two sealing rings can also play a role in protecting the valve box.
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
Fig. 1 is a schematic structural diagram of a stainless steel valve box with a spool sleeve structure.
The novel high-pressure packing box comprises a valve box body 1, a packing spacer ring 2, a packing bag 3, a packing compression ring 4, a packing sleeve 5, a packing pressing cap 6, a plunger 7, a main sealing ring 8, an auxiliary sealing ring 9 and a positioning clamping table 10.
Detailed Description
As shown in FIG. 1, a take stainless steel valve box of packing cover structure, including valve box body 1, valve box body 1 passes through packing subassembly and plunger 7 sealing connection, the stainless steel valve box of taking packing cover structure still includes packing cover 5, packing cover 5 is connected with valve box body 1, the packing subassembly is established in packing cover 5, the packing subassembly is used for packing cover 5 and plunger 7's sealing connection. Add packing cover 5, increase one deck safeguard measure for the valve box, make the packing subassembly not with valve box inner chamber direct contact, use for a long time when the valve box, plunger 7 aggravates gradually with the wearing and tearing of packing subassembly, the high-pressure liquid thorn that the packing subassembly leads to is not in time changed leaks, or the high-pressure liquid thorn that the packing subassembly installation leads to incorrectly leaks, can effectively avoid the high-pressure liquid of thorn to use the valve box inner chamber, only need with the packing cover 5 change of damage can, the effectual valve box that has protected. The packing subassembly includes packing spacer ring 2, packing package 3 and packing clamping ring 4, establishes packing spacer ring 2 in the one end of packing package 3, establishes packing clamping ring 4 at the other end of packing package 3.
The packing sleeve 5 is of a Z-shaped structure. The packing sleeve 5 is designed to be of a Z-shaped structure, two sealing rings (a main sealing ring 8 and an auxiliary sealing ring 9) are arranged between the packing sleeve 5 and the valve box in a matched mode, the Z-shaped structure increases the contact area of the packing sleeve 5 and the valve box, and the sealing effect can be improved.
The packing sleeve 5 is provided with a positioning clamping table 10, and the valve box body 1 is provided with a limiting clamping table for limiting and installing the positioning clamping table 10.
The valve box is characterized in that a valve box groove is formed in the valve box body 1 and is formed in one side of the positioning clamping table 10, a main sealing ring 8 is installed in the valve box groove, the main sealing ring 8 is used for sealing the valve box body 1 and the packing sleeve 5, and high-pressure liquid is prevented from entering between the packing sleeve 5 and a valve box matching surface. The addition of the main sealing ring 8 can play a role in protecting the valve box besides playing a role in sealing. When 8 damages of main seal circle, high-pressure liquid also is packing cover 5 from sealed position puncture, and is main to damage, and is also less to the influence of valve box upper seal recess, only need this moment change packing cover 5 can, protected the valve box.
The packing sleeve 5 is provided with a sealing groove, the sealing groove is arranged on the other side of the positioning clamping table 10, an auxiliary sealing ring 9 is arranged in the sealing groove, and the auxiliary sealing ring 9 is used for sealing the valve box body 1 and the packing sleeve 5, so that the valve box is convenient to disassemble, assemble and maintain.
The valve box body 1 comprises a valve box shell, and the valve box shell is made of precipitation hardening stainless steel. The precipitation hardening stainless steel material has high strength, high ductility and toughness and excellent corrosion resistance, the corrosion and fatigue resistance is obviously superior to that of an alloy steel material, the service life of the precipitation hardening stainless steel material is more than 3 times that of the conventional alloy steel material, and the service life of a valve box can be effectively prolonged.
Be equipped with the packing on valve box body 1 and press cap 6, the packing is pressed cap 6 and is used for compressing tightly packing sleeve 5 and packing subassembly, guarantees that packing sleeve 5 and valve box are closely laminated together, also guarantees that the packing subassembly has suitable degree of compressing tightly, guarantees static seal and dynamic seal's effect.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a take stainless steel valve box of packing cover structure, includes the valve box body, the valve box body passes through packing subassembly and plunger sealing connection, its characterized in that: the stainless steel valve box with the packing sleeve structure further comprises a packing sleeve, the packing sleeve is connected with the valve box body, the packing assembly is installed in the packing sleeve, and the packing assembly is used for achieving sealing connection of the packing sleeve and the plunger.
2. The stainless steel valve box with a spool arrangement of claim 1, wherein: the packing sleeve is of a Z-shaped structure.
3. The stainless steel valve box with a spool arrangement of claim 1, wherein: the packing sleeve is provided with a positioning clamping table, and the valve box body is provided with a limiting clamping table for mounting the packing sleeve.
4. The stainless steel valve box with a spool arrangement of claim 3, wherein: the packing box is characterized in that a valve box groove is formed in the valve box body and is formed in one side of the positioning clamping table, a main sealing ring is installed in the valve box groove, and the main sealing ring is used for sealing the valve box body and the packing sleeve.
5. The stainless steel valve box with a spool arrangement of claim 3, wherein: the packing sleeve is provided with a sealing groove, the sealing groove is formed in the other side of the positioning clamping table, an auxiliary sealing ring is arranged in the sealing groove, and the auxiliary sealing ring is used for sealing the valve box body and the packing sleeve.
6. The stainless steel valve box with a spool arrangement of claim 1, wherein: the valve box body comprises a valve box shell, and the valve box shell is made of precipitation hardening stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201922418186.3U CN211500955U (en) | 2019-12-26 | 2019-12-26 | Stainless steel valve box with packing sleeve structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922418186.3U CN211500955U (en) | 2019-12-26 | 2019-12-26 | Stainless steel valve box with packing sleeve structure |
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| CN211500955U true CN211500955U (en) | 2020-09-15 |
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| CN201922418186.3U Active CN211500955U (en) | 2019-12-26 | 2019-12-26 | Stainless steel valve box with packing sleeve structure |
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