CN216692311U - Safety valve and safety valve seat screwing tool - Google Patents
Safety valve and safety valve seat screwing tool Download PDFInfo
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- CN216692311U CN216692311U CN202123317365.1U CN202123317365U CN216692311U CN 216692311 U CN216692311 U CN 216692311U CN 202123317365 U CN202123317365 U CN 202123317365U CN 216692311 U CN216692311 U CN 216692311U
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- valve seat
- tubular main
- main body
- valve
- safety valve
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Abstract
The utility model relates to a safety valve which comprises a valve body and a valve seat, wherein the valve seat is in threaded connection with an inlet of the valve body, the inlet end face of the valve seat does not exceed the inlet end face of the valve body, and a positioning part is arranged on the peripheral surface of the valve seat. The safety valve seat screwing tool comprises a tubular main body and an operating piece, wherein a matching portion matched with the positioning portion is formed at one end of the tubular main body, and an operating portion matched with the operating piece is arranged at the other end of the tubular main body. The inlet boss of the safety valve can be greatly reduced, and the design of the safety valve according to the standard boss prevents a user from matching a wrong stud, so that the satisfaction degree of the user is increased; the valve seat flow passage of the safety valve is a smooth and complete cambered surface, and a wrench groove is not arranged, so that the structural strength of the valve seat inlet is increased, and the circulation of a medium is facilitated; the tool is sleeved on the valve seat, so that a guiding effect is achieved, the valve seat and the valve body are easier to screw, and the qualified rate of a sealing test is improved; through the cooperation of lug and recess, a frock can be applicable to multiple specification, and the suitability is strong.
Description
Technical Field
The utility model relates to the field of valves, in particular to a safety valve and a safety valve seat screwing tool.
Background
The safety valve is a special valve, wherein the opening and closing part is in a normally closed state under the action of external force, and when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium is discharged to the outside of the system to prevent the pressure of the medium in the pipeline or the equipment from exceeding the specified value.
The safety valve comprises a valve body and a valve seat, wherein the valve body and the valve seat are usually in a threaded connection or a welding structure. For valve seats that use threaded connections, special tools are required for tightening. The valve seat in threaded connection also adopts two screwing modes, wherein one mode (hereinafter, the mode I) is that the valve seat protrudes out of a part of the valve body, and a hexagon (shown in figures 2 and 3) or opposite sides (shown in figures 4 and 5) are arranged outside the valve seat; the other is that the valve seat is embedded into the valve body, and the inner cavity of the valve seat is milled with opposite sides or four sides (hereinafter, the valve seat is generally called as type II).
For type one:
the first valve seat wrench structure is beneficial to installation and tightening, but in order to facilitate the use of a wrench to tighten the valve seat, the valve seat is designed to protrude a certain distance (such as L in figure 1) from the inlet end face (lower flange) of the valve seat, and meanwhile, in order to enable the size of the inlet and outlet structure to meet the standard requirement, the distances L protruding from the lower flange are inconsistent for valve seats designed by different manufacturers; this often results in mismatching studs (short studs) and affects the installation.
For type two:
see patent publication No. CN208246717U and disclose a tool for tightening a valve seat of a safety valve (as shown in fig. 6), the tool is used for tightening by matching a bayonet with a clamping groove of the valve seat, and the tool is provided with a hexagon nut similar structure, and can be tightened by using a common wrench, so that the universality is improved.
But the tool has the following disadvantages: the contact of the bayonet fitting position is too small, the wrench screwing position and the bayonet fitting position are not on the same plane, and no limit structure exists, so that the wrench is easy to slip off during screwing, and personnel are injured; meanwhile, the valve body is generally fixed by using calipers, so that large force cannot be applied during screwing, the valve seat and the valve body are not easy to screw, the qualification rate of a sealing test after assembly is low (about 92%), and valve leakage is easy to cause; and the tightening efficiency is low, so that rework, time consumption and labor consumption are easily caused.
Disclosure of Invention
One object of the present invention is to provide a safety valve, the valve seat of which is provided with a special structure for the tool to mount.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a safety valve comprises a valve body and a valve seat, wherein the valve seat is in threaded connection with an inlet of the valve body, an inlet end face of the valve seat does not exceed an inlet end face of the valve body, a positioning portion is arranged on the outer peripheral face of the valve seat and used for being matched with a tool to connect the valve seat to the valve body in a threaded mode.
Preferably, the positioning portion is a first projection protruding from the outer peripheral surface of the valve seat, or the positioning portion is a first groove formed in the outer peripheral surface of the valve seat, and the direction of a notch of the first groove is consistent with the water inlet direction of the valve seat.
According to the above technical scheme, preferably, the positioning portion is provided with a plurality of positioning portions which are uniformly distributed on the outer circumferential surface of the valve seat.
The utility model further aims to provide the safety valve seat screwing tool, which can screw the valve seat on the valve body, meet the actual production requirement, improve the production efficiency and improve the test qualification rate.
A safety valve seat screwing tool is used for screwing a valve seat in a safety valve and comprises a tubular main body and an operating part used for operating the tubular main body to rotate, a matching part matched with a positioning part is formed at one end of the tubular main body, and an operating part matched with the operating part is arranged at the other end of the tubular main body.
According to the technical scheme, preferably, the tool is in a screwing state, the tubular main body is sleeved outside the valve seat, the matching portion of the tubular main body is matched with the positioning portion of the valve seat and fixed relative to the positioning portion, the operating portion of the tubular main body is matched with the operating piece, and the operating piece is rotated to drive the tubular main body to rotate around the axis of the tubular main body.
In the above technical solution, preferably, the fitting portion is a second groove formed in an end face of one end of the tubular main body, a notch of the second groove faces an axial direction of the tubular main body,
the positioning part is a first bump protruding out of the peripheral surface of the valve seat, the position of the second groove corresponds to the position of the first bump, the size of the second groove is matched with that of the first bump, and the first bump is positioned in the second groove when the tool is in a screwing state.
In the above technical solution, preferably, the fitting portion is a second protrusion disposed on an end face of the tubular main body,
the positioning part is a first groove formed in the peripheral surface of the valve seat, the position of the second bump corresponds to the position of the first groove, the size of the second bump is matched with that of the first groove, and the second bump is located in the first groove when the tool is screwed down.
In the above technical solution, preferably, the fitting portion is provided with a plurality of fitting portions, and the plurality of fitting portions are uniformly distributed on the end face of one end of the tubular main body.
Preferably, the operating part is a groove body arranged on the circumferential surface of the other end of the tubular main body, and the groove body is provided with notches in the axial direction and the radial direction of the tubular main body.
In the above technical solution, preferably, the operation portion is a hole penetrating the other end of the tubular body.
Due to the application of the technical scheme, compared with the prior art, the utility model has the following advantages:
1. the inlet boss of the safety valve can be greatly reduced, and the design of the safety valve according to the standard boss prevents a user from matching a wrong stud, so that the satisfaction degree of the user is increased;
2. the valve seat flow passage of the safety valve is a smooth and complete cambered surface, and a wrench groove is not arranged, so that the structural strength of the valve seat inlet is increased, and the circulation of a medium is facilitated;
3. the tool is sleeved on the valve seat, so that a guiding effect is achieved, the valve seat and the valve body are easier to screw, and the qualified rate of a sealing test is improved;
4. through the cooperation of lug and recess, a frock can be applicable to multiple specification, and the suitability is strong.
Drawings
FIG. 1 is a schematic cross-sectional view of a first prior art safety valve version;
FIG. 2 is a schematic cross-sectional view of a hexagonal valve seat in a first safety valve of the prior art;
FIG. 3 is a schematic bottom view of FIG. 2;
FIG. 4 is a schematic cross-sectional view of a valve seat with a center-to-center structure of a first safety valve type in the prior art;
FIG. 5 is a schematic bottom view of FIG. 4;
FIG. 6 is a schematic cross-sectional view of a safety valve type II and a tool in the prior art;
FIG. 7 is a schematic cross-sectional view of a first embodiment of a relief valve seat;
FIG. 8 is a schematic cross-sectional view of a second embodiment of a safety valve seat;
FIG. 9 is a schematic cross-sectional view of a first tubular body of the present embodiment;
FIG. 10 is a schematic cross-sectional view of a second tubular body in accordance with the present embodiment;
FIG. 11 is a schematic bottom view of FIGS. 9/10;
FIG. 12 is a schematic cross-sectional view of the tool in this embodiment in a tightened state;
FIG. 13 is a schematic view of an operating member (wrench) according to the present embodiment.
In the above drawings:
1. a valve body; 10. an inlet end face; 11. an upper cavity hole; 2. a valve seat; 20. an inlet end face; 21. a first bump; 22. a first groove; 3. a tubular body; 30. a second groove; 31. a second bump; 32. a trough body; 33. an aperture; 4. an operating member.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a safety valve, includes valve body 1, disk seat 2, and valve body 1 has the entry, just to the last cavity hole 11 of entry, and disk seat 2 threaded connection is at the entrance of valve body 1, and the entry terminal surface 20 of disk seat 2 does not surpass entry terminal surface 10 (lower flange) of valve body 1 for valve body 1, disk seat 2 can make standard architecture. In this embodiment: be provided with location portion on the outer peripheral face of disk seat 2, location portion is used for with the frock cooperation with disk seat 2 threaded connection on valve body 1.
In this embodiment: the positioning part specifically gives two structural embodiments:
the first method is as follows: as shown in fig. 7: in this structure: the positioning portion is a first projection 21 projecting from the outer peripheral surface of the valve seat 2. The first projections 21 are provided in plural, four being shown as an example, and four first projections 21 are uniformly distributed on the outer peripheral surface of the valve seat 2.
The second method comprises the following steps: as shown in fig. 8: in this structure: the positioning part is a first groove 22 formed on the outer peripheral surface of the valve seat 2, and the direction of the notch of the first groove 22 is consistent with the water inlet direction of the valve seat 2. The first grooves 22 are also provided in plural numbers, four being shown as an example, and four first grooves 22 are uniformly distributed on the outer peripheral surface of the valve seat 2.
A safety valve seat screwing tool comprises a tubular main body 3 and an operating piece 4 (shown in figure 13) used for operating the tubular main body 3 to rotate, wherein a matching portion matched with a positioning portion is formed at one end of the tubular main body 3, and an operating portion matched with the operating piece 4 is arranged at the other end of the tubular main body.
In this embodiment: the matching part specifically provides two structural embodiments:
the first method is as follows: as shown in fig. 9 and 11: the matching part is a second groove 30 arranged on one end face of the tubular main body 3, and the notch of the second groove 30 faces to the axial direction of the tubular main body 3. The first way of the second groove 30 and the first way of the positioning part of the valve seat 2 are matched, the number of the second grooves 30 is the same as that of the first lugs 21, the number of the second grooves 30 is four, the positions of the second grooves 30 correspond to those of the first lugs 21, and the size of the second grooves 30 is matched with that of the first lugs 21.
The second method comprises the following steps: as shown in fig. 10 and 11: the matching part is a second bump 31 arranged on one end face of the tubular main body 3, the second bump 31 is matched with the positioning part of the valve seat 2 in a second mode, the number of the second bumps 31 is the same as that of the first grooves 22, the number of the second bumps 31 is four, the positions of the second bumps 31 correspond to those of the first grooves 22, and the size of the second bumps 31 is matched with that of the first grooves 22.
In this embodiment: the operation part also specifically gives two structural embodiments:
the first method is as follows: as shown in fig. 9: the operation part is a groove body 32 arranged on the circumferential surface of the other end of the tubular main body 3, and the groove body 32 is provided with notches in the axial direction and the radial direction of the tubular main body 3. The first mode is mainly used in cooperation with a wrench, that is, the operating part 4 is a wrench.
The second method comprises the following steps: as shown in fig. 10: the operating portion is a hole 33 that penetrates the other end of the tubular body 3. The second mode is mainly used together with a rod or a rod, namely the operating part adopts the rod or the rod.
In fig. 9, the tubular body 3 is a combination of the first fitting portion type and the first operation portion type, and in fig. 10, the tubular body 3 is a combination of the second fitting portion type and the second operation portion type, but it is needless to say that the first fitting portion type of the tubular body 3 may be combined with the second operation portion type of the tubular body 3, and the second fitting portion type of the tubular body 3 may be combined with the first operation portion type of the tubular body 3.
The working process of screwing the valve seat by the screwing tool is specifically explained as follows:
as shown in fig. 12: firstly, manually screwing the valve seat 2 into the valve body 1 to lay a foundation for the use of a screwing tool;
the inlet end face 10 (lower flange) of the valve body 1 is directed downward and fixed without interfering with the valve seat 2;
one end of the tubular main body 3 extends into the valve body 1 through the upper cavity hole 11 of the valve body 1, the tubular main body 3 is sleeved outside the valve seat 2, and the matching part of the tubular main body 3 is matched with the positioning part of the valve seat 2 and is relatively fixed with the positioning part.
If the positioning portion of the valve seat 2 is the first protrusion 21, the matching portion of the tubular main body 3 is the second groove 30, and at this time, the first protrusion 21 is located in the second groove 30; for example, when the positioning portion of the valve seat 2 is the first groove 22, the matching portion of the tubular main body 3 is the second protrusion 31, and at this time, the second protrusion 31 is located in the first groove 22.
The groove body 32 at the other end of the tubular main body 3 is clamped by a wrench and rotates, so that the axis of the tubular main body 3 rotates to drive the valve seat 2 to rotate, and the valve seat is screwed on the valve body 1; or a rod penetrates through a hole at the other end of the tubular main body 3 and rotates, so that the axis of the tubular main body 3 rotates to drive the valve seat 2 to rotate, and the valve seat is screwed on the valve body 1.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A safety valve comprises a valve body and a valve seat, wherein the valve seat is in threaded connection with an inlet of the valve body, and an inlet end face of the valve seat does not exceed an inlet end face of the valve body, and the safety valve is characterized in that: the valve seat is characterized in that a positioning part is arranged on the outer peripheral surface of the valve seat, and the positioning part is used for being matched with a tool to connect the valve seat in a threaded mode on the valve body.
2. The safety valve of claim 1, wherein: the positioning part is a first bump protruding out of the peripheral surface of the valve seat, or the positioning part is a first groove formed in the peripheral surface of the valve seat, and the direction of a notch of the first groove is consistent with the water inlet direction of the valve seat.
3. The safety valve of claim 1, wherein: the positioning parts are arranged in a plurality of numbers and are uniformly distributed on the peripheral surface of the valve seat.
4. The utility model provides a frock is screwed up to relief valve disk seat which characterized in that: the tool is used for screwing the valve seat of the safety valve in any one of claims 1 to 3, and comprises a tubular main body and an operating part for operating the tubular main body to rotate, wherein one end of the tubular main body forms a matching part matched with the positioning part, and the other end of the tubular main body is provided with an operating part matched with the operating part.
5. The safety valve seat tightening tool according to claim 4, characterized in that: the frock under the state of screwing up, tubular main part cover establish the outside of disk seat, tubular main part's cooperation portion with the location portion cooperation of disk seat and both relatively fixed, tubular main part's operation portion with the operating parts cooperation, the rotation the operating parts drive tubular main part rotate around self axis.
6. The safety valve seat tightening tool according to claim 4, characterized in that: the matching part is a second groove arranged on the end face of one end of the tubular main body, the notch of the second groove faces to the axial direction of the tubular main body,
the positioning part is a first bump protruding out of the peripheral surface of the valve seat, the position of the second groove corresponds to the position of the first bump, the size of the second groove is matched with that of the first bump, and the first bump is positioned in the second groove when the tool is screwed down.
7. The safety valve seat tightening tool according to claim 4, characterized in that: the matching part is a second lug arranged on one end face of the tubular main body,
the positioning part is a first groove formed in the peripheral surface of the valve seat, the position of the second bump corresponds to the position of the first groove, the size of the second bump is matched with that of the first groove, and the second bump is located in the first groove when the tool is screwed down.
8. The safety valve seat tightening tool according to claim 4, characterized in that: the matching parts are arranged in a plurality of numbers and are uniformly distributed on the end face of one end of the tubular main body.
9. The safety valve seat tightening tool according to claim 4, characterized in that: the operation portion is a groove body arranged on the circumferential surface of the other end of the tubular main body, and the groove body is provided with notches in the axial direction and the radial direction of the tubular main body.
10. The safety valve seat tightening tool according to claim 4, characterized in that: the operating part is a hole penetrating through the other end of the tubular main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123317365.1U CN216692311U (en) | 2021-12-27 | 2021-12-27 | Safety valve and safety valve seat screwing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123317365.1U CN216692311U (en) | 2021-12-27 | 2021-12-27 | Safety valve and safety valve seat screwing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216692311U true CN216692311U (en) | 2022-06-07 |
Family
ID=81844818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123317365.1U Active CN216692311U (en) | 2021-12-27 | 2021-12-27 | Safety valve and safety valve seat screwing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216692311U (en) |
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2021
- 2021-12-27 CN CN202123317365.1U patent/CN216692311U/en active Active
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