CN217977370U - Novel temperature and pressure reducing regulating valve - Google Patents
Novel temperature and pressure reducing regulating valve Download PDFInfo
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- CN217977370U CN217977370U CN202221617890.7U CN202221617890U CN217977370U CN 217977370 U CN217977370 U CN 217977370U CN 202221617890 U CN202221617890 U CN 202221617890U CN 217977370 U CN217977370 U CN 217977370U
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Abstract
The utility model discloses a novel temperature and pressure reduction regulating valve, including the governing valve body, the governing valve body includes valve body, case subassembly and pilot valve rod, and the case subassembly sets up at the valve body inner chamber, and the bottom of pilot valve rod stretches into to the inner chamber of case subassembly in, is provided with limiting sleeve on the case subassembly, still including setting up the axle sleeve on the pilot valve rod earlier, this axle sleeve is located between the diapire in limiting sleeve and the case subassembly. After the technical scheme is adopted, the utility model provides a novel temperature and pressure reduction governing valve, through installing an axle sleeve on preceding pilot valve rod, thereby increase pilot valve rod and spacing sleeve contact surface, avoid causing the wearing and tearing of pilot valve rod because of the contact surface undersize, the equipment life of increase, the extension maintenance cycle improves the security of temperature and pressure reduction governing valve operation, can avoid simultaneously because the pilot valve rod has been caused the stroke grow of pilot valve by wearing and tearing, finally arouse the undulant change of valve aperture, the problem that influences the heat supply steam quality takes place.
Description
Technical Field
The utility model relates to a novel temperature and pressure reduction regulating valve.
Background
The medium-pressure accident temperature and pressure reduction regulating valve adopts the control of the stroke opening of the valve rod, changes the flow area of the valve core and the valve seat to regulate the flow of a medium, and achieves the purpose of pressure reduction. The temperature and pressure reducing regulating valve is designed with two-stage stroke of a pilot valve and a main valve, the regulating valve operates to open the pilot valve firstly to enable a valve rod of the pilot valve to rise so as to reduce differential pressure between the front of the valve and the back of the valve, after the full stroke of the valve rod of the pilot valve, the valve rod of the pilot valve is blocked by a limiting sleeve, and the valve rod of the pilot valve drives a valve core assembly to open a valve seat of the main valve, so that the flow area of a regulating medium is changed. When the pilot valve is switched with the main valve, the pressure before and after the valve is constantly changed, the valve core assembly drives the limiting sleeve to impact the pilot valve rod under the action of inertia, so that the stroke of the pilot valve is increased due to abrasion of the pilot valve rod, and finally the valve opening fluctuation is caused (wherein the valve position fluctuation range is (0-8%) before the pilot valve rod is abraded, and the valve position fluctuation range is (0-43%) after the pilot valve is abraded), so that the medium flow is suddenly changed, the heat supply steam quality is influenced, and on the other hand, the contact surface between the pilot valve rod and the limiting sleeve is too small, so that the service life of equipment is easily shortened due to impact abrasion.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model provides a novel temperature and pressure reduction regulating valve.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a novel temperature and pressure reduction regulating valve, includes the governing valve body, the governing valve body includes valve body, case subassembly and pilot valve rod, the case subassembly sets up on the valve body inner chamber, the bottom of pilot valve rod stretches into to the inner chamber of case subassembly in, be provided with limiting sleeve on the case subassembly, still including setting up the axle sleeve on the pilot valve rod earlier, this axle sleeve is located between limiting sleeve and the valve case subassembly diapire.
Preferably, a step surface is arranged on the pilot valve rod, the shaft sleeve is arranged on the outer side of the pilot valve rod in an interference fit mode, and the bottom surface of the shaft sleeve abuts against the top surface of the step surface.
Preferably, the regulating valve body further comprises a valve cover, a filler and a valve cover flange, the valve cover is arranged above the valve body, the valve cover and the valve body are connected through the valve cover flange, the filler is arranged on the valve cover, the pilot valve rod can penetrate through the upper end and the lower end of the filler, and the valve body is further provided with a main valve seat.
Preferably, a sealing element is further connected between the valve body and the valve cover.
Preferably, one side of the valve body is connected with a steam inlet connecting pipe, and the other side of the valve body is connected with a temperature-reducing water inlet connecting pipe.
From the above description of the structure of the present invention, compared with the prior art, the present invention has the following advantages:
the utility model provides a pair of novel temperature and pressure reduction regulating valve, through installing an axle sleeve on preceding pilot valve rod, thereby increase pilot valve rod and spacing sleeve contact surface, avoid causing the pilot valve rod wearing and tearing because of the contact surface undersize, the equipment life of increase, the increase maintenance cycle improves the security of temperature and pressure reduction regulating valve operation, can avoid simultaneously because the pilot valve rod is worn and torn the stroke grow that has caused the pilot valve, finally arouse the undulant change of valve aperture, make the medium flow sudden change, the problem that influences the heat supply steam quality takes place.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic structural view of the novel temperature and pressure reducing regulating valve of the present invention.
In the figure: 1. a valve body; 2. a valve core assembly; 3. a pilot valve stem; 3a, a step surface; 4. a limiting sleeve; 5. a shaft sleeve; 6. a valve cover; 7. a filler; 8. a bonnet flange; 9. a water inlet connecting pipe for reducing temperature; 10. a seal member; 11. a steam inlet connection pipe; 12. a main valve seat.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and 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 therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
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 by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Examples
Referring to fig. 1, a novel temperature and pressure reduction regulating valve, including the regulating valve body, the regulating valve body includes valve body 1, case subassembly 2 and pilot valve rod 3, and case subassembly 2 sets up on the 1 inner chamber of valve body, and the bottom of pilot valve rod 3 stretches into to the inner chamber of case subassembly 2, is provided with stop sleeve 4 on the case subassembly 2, still including setting up the axle sleeve 5 on pilot valve rod 3 earlier, and this axle sleeve 5 is located between stop sleeve 4 and the 2 inner diapire of case subassembly. Adopt this structure, install an axle sleeve promptly through on the pilot valve rod, thereby increase pilot valve rod and spacing sleeve contact surface, avoid causing the wearing and tearing of pilot valve rod because of the contact surface undersize, the equipment life of increase, the extension maintenance cycle improves the security of the operation of temperature and pressure reduction governing valve, can avoid simultaneously because the pilot valve rod is worn and torn the stroke grow that has caused the pilot valve, finally arouse the undulant change of valve aperture, make the medium flow sudden change, the problem of influence heat supply steam quality takes place.
Further, a step surface 3a is arranged on the pilot valve rod 3, a shaft sleeve 5 is arranged on the outer side of the pilot valve rod 3 in an interference fit mode, and the bottom surface of the shaft sleeve 5 abuts against the top surface of the step surface 3a. Adopt this structure, the axle sleeve adopts the heating method to install and makes its inseparable cooperation on the pilot valve rod promptly, avoids adopting welded mode to arouse that the material changes and causes the pilot valve rod fracture.
Further, governing valve body still includes valve gap 6, filler 7 and valve gap flange 8, and valve gap 6 sets up in the top of valve body 1, is connected through valve gap flange 8 between this valve gap 6 and the valve body 1, and filler 7 sets up on valve gap 6, and pilot valve rod 3 can run through the upper and lower both ends of filler 7, still is provided with main valve disk seat 12 on the valve body 1.
Further, a sealing member 10 is connected between the valve body 1 and the valve cover 6.
Further, one side of the valve body 1 is connected with a steam inlet connecting pipe 11, and the other side of the valve body 1 is connected with a temperature-reducing water inlet connecting pipe 9.
The working principle is as follows:
the temperature and pressure reducing regulating valve is designed with two-stage stroke of a pilot valve and a main valve, the regulating valve operates to open the pilot valve firstly to enable a valve rod of the pilot valve to rise so as to reduce differential pressure between the front of the valve and the back of the valve, after the full stroke of the valve rod of the pilot valve, the valve rod of the pilot valve is blocked by a limiting sleeve, and the valve rod of the pilot valve drives a valve core assembly to open a valve seat of the main valve, so that the flow area of a regulating medium is changed. When pilot valve and main valve switch, before the valve with behind the valve pressure constantly change, the case subassembly drives spacing sleeve striking axle sleeve under inertial effect, reduces the direct striking pilot valve rod among the prior art and the wearing and tearing of the pilot valve rod that cause, and the influence makes the medium flow sudden change, influences the problem emergence of heat supply steam quality.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (5)
1. The utility model provides a novel temperature and pressure reduction regulating valve, includes the governing valve body, the governing valve body includes valve body (1), case subassembly (2) and pilot valve rod (3), case subassembly (2) set up on valve body (1) inner chamber, the bottom of pilot valve rod (3) stretches into to the inner chamber of case subassembly (2) in, be provided with limit sleeve (4), its characterized in that on case subassembly (2): the pilot valve is characterized by further comprising a shaft sleeve (5) arranged on the pilot valve rod (3), wherein the shaft sleeve (5) is located between the limiting sleeve (4) and the inner bottom wall of the valve core assembly (2).
2. A novel temperature and pressure reducing regulating valve as claimed in claim 1, wherein: the pilot valve is characterized in that a step surface (3 a) is arranged on the pilot valve rod (3), the shaft sleeve (5) is arranged on the outer side of the pilot valve rod (3) in an interference fit mode, and the bottom surface of the shaft sleeve (5) abuts against the top surface of the step surface (3 a).
3. A novel temperature and pressure reducing regulating valve as claimed in claim 1, wherein: the regulating valve body further comprises a valve cover (6), a filler (7) and a valve cover flange (8), the valve cover (6) is arranged above the valve body (1), the valve cover (6) is connected with the valve body (1) through the valve cover flange (8), the filler (7) is arranged on the valve cover (6), the pilot valve rod (3) can penetrate through the upper end and the lower end of the filler (7), and a main valve seat (12) is further arranged on the valve body (1).
4. A novel temperature and pressure reducing regulating valve as claimed in claim 3, wherein: and a sealing element (10) is also connected between the valve body (1) and the valve cover (6).
5. A novel temperature and pressure reducing regulating valve as claimed in claim 1, wherein: one side of the valve body (1) is connected with a steam inlet connecting pipe (11), and the other side of the valve body (1) is connected with a desuperheating water inlet connecting pipe (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221617890.7U CN217977370U (en) | 2022-06-27 | 2022-06-27 | Novel temperature and pressure reducing regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221617890.7U CN217977370U (en) | 2022-06-27 | 2022-06-27 | Novel temperature and pressure reducing regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217977370U true CN217977370U (en) | 2022-12-06 |
Family
ID=84273188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221617890.7U Active CN217977370U (en) | 2022-06-27 | 2022-06-27 | Novel temperature and pressure reducing regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217977370U (en) |
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2022
- 2022-06-27 CN CN202221617890.7U patent/CN217977370U/en active Active
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