CN209762352U - Safety valve with position indicator anti-collision structure - Google Patents
Safety valve with position indicator anti-collision structure Download PDFInfo
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- CN209762352U CN209762352U CN201920640307.6U CN201920640307U CN209762352U CN 209762352 U CN209762352 U CN 209762352U CN 201920640307 U CN201920640307 U CN 201920640307U CN 209762352 U CN209762352 U CN 209762352U
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- position indicator
- valve
- magnetic head
- safety valve
- crash
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Abstract
The utility model relates to a relief valve with bad structure is prevented bumping by position indicator, it includes the valve body, the disk seat, the valve gap, the safety cover, the valve clack, valve rod and position indicator, position indicator includes the response magnetic head, the position indicator switch is located directly over the response magnetic head, the relief valve still includes the position indicator and prevents bumping bad structure, the position indicator prevents bumping bad structure including the cover body of connection in the valve rod upper end, the setting is at the internal elastic component of cover, the response magnetic head is connected at the cover body, the elastic component is located between valve rod upper end and the response magnetic head, the response magnetic head passes through the relative cover body of elastic component and moves about in the up and down direction. The utility model reduces the installation difficulty of the position indicator on the safety valve and improves the efficiency; the rigid collision between the induction magnetic head and the position indicator switch can be effectively prevented, the damage is prevented, and the cost is reduced; the universality of the position indicator is improved, and the purchasing selectivity is wider.
Description
Technical Field
The utility model relates to the field of machinary, the valve trade especially relates to a relief valve with bad structure is prevented bumping by position indicator.
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.
With the social development and the advancement of the industry, informatization is more and more important, and in order to constantly display the working state of the safety valve, a position indicator is generally arranged on the safety valve and used for recording an opening/closing signal of the safety valve.
The general structure is shown in figure 1, the position indicator is arranged at the top end of the safety valve, wherein, a connector is arranged at the upper end part of a valve rod, the indicator is arranged on a protective cover, when the safety valve is opened (the connector moves upwards along with the valve rod), a signal 1 is output, when the safety valve is closed (the connector moves downwards along with the valve rod), a signal 0 is output, and when the position indicator with smaller sensing distance (on one hand, the position indicator is determined by the performance of the position indicator, on the other hand, the opening height of the safety valve is limited, and is generally 2 ~ 3 mm), the problem that the connector rigidly collides with the indicator when the safety valve is.
In addition, small impulsive force can be generated when the safety valve is opened, the parts can be thermally expanded under high-temperature working conditions, and the like, so that the problem that the joint rigidly collides the indicator is possibly generated, and the position indicator is damaged and fails.
Therefore, it is necessary to design a structure for preventing the safety valve position indicator from being damaged by collision, and to install the safety valve and protect the position indicator.
disclosure of Invention
The utility model aims at providing a relief valve with bad structure is prevented bumping by position indicator.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
A safety valve with a position indicator anti-collision structure comprises a valve body, a valve seat arranged in the valve body, a valve cover arranged on the valve body, a protective cover arranged on the valve cover, a valve clack positioned at the position of the valve seat outlet and pressed in the valve body, a valve rod with the lower end connected with the valve clack and the upper end penetrating through the valve cover and positioned in the protective cover, and a position indicator, wherein the position indicator comprises an induction magnetic head and a position indicator switch, the position indicator switch is connected on the protective cover and positioned right above the induction magnetic head, the position indicator switch is partially positioned in the protective cover, the safety valve further comprises a position indicator anti-collision structure, and the position indicator anti-collision structure comprises a sleeve body connected to the upper end of the valve rod, a valve rod and a position indicator, The sensing magnetic head is arranged between the upper end part of the valve rod and the sensing magnetic head, and the sensing magnetic head moves in the vertical direction relative to the sleeve body through the elastic part.
Preferably, the position indicator anti-collision structure further comprises a limiting part movably arranged in the sleeve body up and down, the induction magnetic head is connected to the limiting part, and the elastic part is arranged between the upper end part of the valve rod and the limiting part.
Preferably, the sleeve body is provided with a connecting port, and the induction magnetic head is connected to the limiting part through the connecting port.
Further preferably, the cross section of the limiting member is T-shaped.
Further preferably, the limiting member is a limiting nut.
Further preferably, the inductive magnetic head is connected to the position-limiting member by a screw thread and is fixed by the first locking member.
Further preferably, the first locking member is a lock nut.
Preferably, the sleeve body is connected to the upper end of the valve rod through threads.
Preferably, the position indicator switch is screwed on the protective cover and fixed by a second locking member.
Further preferably, the second locking member is a locking nut.
Because of the application of the technical scheme, compared with the prior art, the utility model have following advantage and effect:
1. The installation difficulty of the position indicator on the safety valve is reduced, and the efficiency is improved;
2. The rigid collision between the induction magnetic head and the position indicator switch can be effectively prevented, the damage is prevented, and the cost is reduced;
3. The universality of the position indicator is improved, and the purchasing selectivity is wider.
Drawings
FIG. 1 is a schematic view of a safety valve with a position indicator mounted thereon according to the prior art;
FIG. 2 is a schematic view of a safety valve in the present embodiment;
FIG. 3 is a schematic view of the anti-crash structure of the safety valve before opening position indicator in the present embodiment;
Fig. 4 is a schematic view of the anti-collision structure of the open position indicator of the safety valve in this embodiment.
wherein: 1. a valve body; 2. a valve seat; 3. a valve cover; 4. a protective cover; 5. a valve flap; 6. a valve stem; 70. an inductive magnetic head; 71. a position indicator switch; 8. a second locking member; 90. a sleeve body; 91. a limiting member; 92. a first locking member; 93. an elastic member.
Detailed Description
the technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 2, the safety valve with a position indicator anti-collision structure comprises a valve body 1, a valve seat 2 arranged inside the valve body 1, a valve cover 3 arranged on the valve body 2, a protective cover 4 arranged on the valve cover 3, a valve clack 5 positioned at an outlet of the valve seat 2 and pressed in the valve body 1, and a valve rod 6, wherein the lower end of the valve rod is connected with the valve clack 5, and the upper end of the valve rod penetrates through the valve cover 3 and is positioned in the protective cover 4.
The safety valve also includes a position indicator comprising a sensing head 70, a position indicator switch 71. Wherein: the position indicator switch 71 is connected to the protective cover 4 and is located directly above the inductive magnetic head 70, and the position indicator switch 71 is partially located in the protective cover 4. In this embodiment: the position indicator switch 70 is screwed to the protective cover 4 and fixed by the second locking member 8, and the second locking member 8 may be a lock nut.
the safety valve further comprises a position indicator anti-collision structure, and the position indicator anti-collision structure comprises a sleeve body 90, a limiting part 91, a first locking part 92 and an elastic part 93. Wherein: the limiting member 91 may be a limiting nut having a T-shaped cross section; the first lock member 92 may employ a lock nut; the elastic member 93 is a spring.
During installation: the induction magnetic head 70 is connected to the limiting part 91 through a thread, is fixed into a whole through a first locking part 98 and is arranged in the sleeve body 90, and the induction magnetic head 70 penetrates out of the sleeve body 90 through a connecting port formed in the sleeve body 90; the sleeve body 90 is connected to the upper end of the valve rod 6 through threads; the elastic member 93 is provided between the upper end of the valve rod 6 and the stopper 91. Thus, the inductive magnetic head 70 moves in the vertical direction with respect to the case 90 via the elastic member 93.
As shown in fig. 3 and 4: the following specifically explains the working principle of the present embodiment:
a. The safety valve is suddenly opened, and the valve rod 6 and the sleeve body 90 rapidly move upwards;
b. due to the elastic action of the spring, under the action of the gravity of the limiting member 91, the first locking member 92 and the inductive magnetic head 70, the inductive magnetic head 70 does not move upwards suddenly along with the valve rod 6, and only slowly accelerates to rise; therefore, the inductive magnetic head 70 does not come into sudden rigid contact with the position indicator switch 71;
c. when the opening height of the safety valve reaches the maximum, the valve rod 6 stops moving upwards, the induction magnetic head 70 continues to rise under the acting force of the elastic part 93 and is attracted with the position indicator switch 71 (elastic collision is possible, but the position indicator switch cannot be damaged) to generate a signal;
d. When the safety valve is closed, the inductive magnetic head 70 descends along with the valve rod 6 under the limit of the sleeve body 90, the inductive magnetic head 70 is separated from the position indicator switch 71, and a signal is output;
The utility model discloses mainly through the buffering of elastic component 93, the possibility that will respond to rigid collision between magnetic head 70 and position indicator switch 71 converts elastic collision into, and the power of collision can be through changing spring rate control size, guarantees that inductive head 70 and position indicator switch 71 can not bump badly.
the above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot 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 by the protection scope of the present invention.
Claims (10)
1. a safety valve with a position indicator anti-collision structure comprises a valve body, a valve seat arranged in the valve body, a valve cover arranged on the valve body, a protective cover arranged on the valve cover, a valve clack positioned at the outlet of the valve seat and pressed in the valve body, a valve rod with the lower end connected with the valve clack and the upper end penetrating through the valve cover and positioned in the protective cover, and a position indicator, wherein the position indicator comprises an inductive magnetic head and a position indicator switch, the position indicator switch is connected on the protective cover and positioned right above the inductive magnetic head, and the position indicator switch is partially positioned in the protective cover, and the safety valve is characterized in that: the safety valve also comprises a position indicator anti-collision structure, the position indicator anti-collision structure comprises a sleeve body connected to the upper end of the valve rod and an elastic piece arranged in the sleeve body, the induction magnetic head is connected to the sleeve body, the elastic piece is positioned between the upper end part of the valve rod and the induction magnetic head, and the induction magnetic head moves up and down through the elastic piece relative to the sleeve body.
2. The safety valve having a position indicator crash-proof structure according to claim 1, wherein: the position indicator anti-collision structure further comprises a limiting part movably arranged in the sleeve body from top to bottom, the induction magnetic head is connected to the limiting part, and the elastic part is arranged at the upper end of the valve rod and between the limiting parts.
3. The safety valve having a position indicator crash-proof structure according to claim 2, wherein: the sleeve body is provided with a connecting port, and the induction magnetic head is connected to the limiting part through the connecting port.
4. the safety valve having a position indicator crash-proof structure according to claim 2, wherein: the cross section of the limiting piece is T-shaped.
5. The safety valve having a position indicator crash-proof structure according to claim 2, wherein: the limiting part is a limiting nut.
6. The safety valve having a position indicator crash-proof structure according to claim 2, wherein: the induction magnetic head is connected to the limiting part through threads and is fixed through the first locking part.
7. The safety valve having a position indicator crash-proof structure according to claim 6, wherein: the first locking piece is a locking nut.
8. The safety valve having a position indicator crash-proof structure according to claim 1, wherein: the sleeve body is connected to the upper end of the valve rod through threads.
9. The safety valve having a position indicator crash-proof structure according to claim 1, wherein: the position indicator switch is connected to the protective cover through threads and is fixed through a second locking piece.
10. The safety valve having a position indicator crash-proof structure according to claim 9, wherein: the second locking piece is a locking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920640307.6U CN209762352U (en) | 2019-05-07 | 2019-05-07 | Safety valve with position indicator anti-collision structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920640307.6U CN209762352U (en) | 2019-05-07 | 2019-05-07 | Safety valve with position indicator anti-collision structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209762352U true CN209762352U (en) | 2019-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920640307.6U Active CN209762352U (en) | 2019-05-07 | 2019-05-07 | Safety valve with position indicator anti-collision structure |
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| Country | Link |
|---|---|
| CN (1) | CN209762352U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030411A (en) * | 2019-05-07 | 2019-07-19 | 吴江市东吴机械有限责任公司 | With the anti-safety valve for breaking structure of position indicator |
-
2019
- 2019-05-07 CN CN201920640307.6U patent/CN209762352U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030411A (en) * | 2019-05-07 | 2019-07-19 | 吴江市东吴机械有限责任公司 | With the anti-safety valve for breaking structure of position indicator |
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