CN214331602U

CN214331602U - Pressure reducing valve with air tightness monitoring function

Info

Publication number: CN214331602U
Application number: CN202023174689.XU
Authority: CN
Inventors: 刘亚飞; 强娟; 史运好
Original assignee: Qingdao Pulest Laboratory Equipment Co ltd
Current assignee: Qingdao Pulest Laboratory Equipment Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-10-01
Anticipated expiration: 2030-12-25

Abstract

The utility model discloses a relief pressure valve with gas tightness monitoring function relates to relief pressure valve technical field. This relief pressure valve with gas tightness monitoring function, including the disk seat, the disk seat has run through on two sides and has seted up the valve gate, be equipped with sealing device outside the disk seat, sealing device includes the pressure ring, the ring channel has been seted up to the internal surface of pressure ring, the surface of pressure ring has cup jointed the valve gap, fixedly connected with connection plate below the valve gap, swing joint has lower connection plate one below the connection plate, and this relief pressure valve is with the pressure ring, through ninety degrees with bull stick counter-clockwise turning, the rotation of bull stick drives the rotation of valve rod, and the valve rod is at last big cover internal rotation, and the rotation of valve rod drives the rotation of valve tongue, and the valve tongue is ninety degrees rotatory in the valve gate, and the valve gate is opened, is greater than the valve gate through the space with the valve barrel to be favorable to reducing internal pressure when the switching, increase the rate of opening greatly.

Description

Pressure reducing valve with air tightness monitoring function

Technical Field

The utility model relates to a relief pressure valve technical field specifically is a relief pressure valve with gas tightness monitoring function.

Background

The pressure reducing valve is a pressure reducing valve which reduces the inlet pressure to a certain required outlet pressure through regulation and automatically keeps the outlet pressure stable by means of the energy of a medium. From the viewpoint of hydrodynamics, the pressure reducing valve is a throttling element with variable local resistance, namely, the flow speed and the kinetic energy of fluid are changed by changing the throttling area to cause different pressure losses, thereby achieving the purpose of pressure reduction. Then, the fluctuation of the pressure behind the valve is balanced with the spring force by means of the regulation of the control and regulation system, so that the pressure behind the valve is kept constant within a certain error range.

The existing pressure reducing valve has the following disadvantages: when a valve rod in the conventional pressure reducing valve rotates and reciprocates for a long time, the conventional pressure ring is a fully-closed rubber ring, the pressure ring can arch up in long-time friction, and the annular space between the sealed valve rod and the sealed cover can generate air leakage, so that the pressure reducing valve has errors in air tightness monitoring.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a relief pressure valve with gas tightness monitor function to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a relief pressure valve with gas tightness monitoring function, includes the disk seat, the disk seat runs through on two sides about and has seted up the valve pocket, the disk seat is equipped with sealing device outward, sealing device includes the pressure ring, the ring channel has been seted up to the internal surface of pressure ring, the valve gap has been cup jointed to the surface of pressure ring, fixedly connected with fishplate bar below the valve gap, fishplate bar one under the lower swing joint of fishplate bar, swing joint has two connecting screw one between fishplate bar and the lower fishplate bar one, the disk seat is equipped with outward and stops the device, the disk seat is equipped with the upper seal body device outward.

Preferably, open and stop the device and include the valve barrel, the fixed cover in internal surface of valve barrel has connect the disk seat, the valve barrel link up with the disk seat internal surface mutually, the higher authority fixedly connected with valve body of valve barrel, the higher authority fixed connection of valve body is below lower fishplate bar one, the valve body link up with the internal surface of lower fishplate bar one mutually, the internal surface swing joint of valve barrel has the valve tongue, the higher authority fixedly connected with valve rod of valve tongue, the surface activity of valve rod has cup jointed the ring channel, the higher authority fixedly connected with bull stick of valve rod.

Preferably, go up the packing body device and include T shape connecting pipe, fishplate bar two under the fixedly connected with of T shape connecting pipe, fixedly connected with valve gap below fishplate bar two down, fishplate bar two link up with the internal surface of valve gap mutually down, T shape connecting pipe and lower be connected with two connecting screw two between the fishplate bar two, the internal surface fixed of T shape connecting pipe has cup jointed the upper envelope, the internal surface activity of upper envelope has cup jointed the valve rod.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) this relief pressure valve with gas tightness monitoring function, valve rod is when rotating for a long time and reciprocating motion in current relief pressure valve, because current pressure ring is totally closed rubber circle, the pressure ring can be encircleed in long-time friction, annular space between sealed valve rod and the sealed lid can produce gas leakage, lead to the relief pressure valve to take place the error when airtight monitoring, this device is through setting up the ring channel in the pressure ring, thereby be favorable to avoiding because of encircleing the gas leakage at the rotation, avoid airtight monitoring to take place the mistake.

(2) This relief pressure valve with gas tightness monitor function, through ninety degrees with bull stick counter-clockwise turning, the rotation of bull stick drives the rotation of valve rod, and the valve rod is at last big envelope internal rotation, and the rotation of valve rod drives the rotation of valve tongue, and the valve tongue is ninety degrees rotations in the valve groove, and the valve groove is opened, is greater than the valve groove through the space with the valve barrel to be favorable to reducing internal pressure when the switching, increase the rate of opening greatly.

Drawings

FIG. 1 is a schematic structural view of the valve seat of the present invention;

FIG. 2 is a schematic view of the rotating rod of the present invention;

fig. 3 is a schematic view of the valve cover of the present invention;

fig. 4 is a schematic view of the pressure ring of the present invention.

In the figure: 1. a valve seat; 11. a valve spool; 2. a pressure ring; 21. an annular groove; 22. a valve cover; 23. an upper connecting plate; 24. a first lower connecting plate; 25. a first connecting screw; 3. a valve housing; 31. a valve body; 32. a valve tongue; 33. A valve stem; 34. a rotating rod; 4. a T-shaped connecting pipe; 41. a lower connecting plate II; 42. a second connecting screw; 43. and (6) putting an envelope on.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a relief pressure valve with gas tightness monitor function, including disk seat 1, disk seat 1 runs through on two sides about and has seted up valve slot 11, disk seat 1 is equipped with sealing device outward, sealing device includes pressure ring 2, ring channel 21 has been seted up to the internal surface of pressure ring 2, valve gap 22 has been cup jointed to the surface of pressure ring 2, fixedly connected with fishplate bar 23 below valve gap 22, fishplate bar 24 is down to swing joint below fishplate bar 23, need inspect whether there is no sand hole on disk seat 1 surface and valve slot 11 internal surface before the use, defects such as crackle, it is firm to be connected between inspection disk seat 1 and the valve body 31, swing joint has two connecting screw 25 between fishplate bar 23 and the lower fishplate bar 24, disk seat 1 is equipped with outward and stops the device, disk seat 1 is equipped with the upper seal body device outward.

Open and stop the device and include valve barrel 3, valve barrel 3's internal surface is fixed to be cup jointed valve base 1, valve barrel 3 link up with valve base 1 internal surface mutually, the higher authority fixedly connected with valve body 31 of valve barrel 3, the higher authority fixed connection of valve body 31 is below lower fishplate bar 24, valve body 31 links up with the internal surface of lower fishplate bar 24 mutually, the internal surface swing joint of valve barrel 3 has valve tongue 32, bull stick 34 anticlockwise rotation is for opening, if certain resistance in the switching, can assist with the F spanner, when unable opening, do not open by force, prevent that valve rod 33 from breaking, rotate bull stick 34 anticlockwise ninety degrees, the rotation of bull stick 34 drives the rotation of valve rod 33, valve rod 33 is in last big envelope 43 internal rotation, the higher authority fixedly connected with valve rod 33 of valve tongue 32, the surface activity of valve rod 33 has cup jointed ring channel 21, the higher authority fixedly connected with bull stick 34 of valve rod 33.

The upper sealing body device comprises a T-shaped connecting pipe 4, a lower connecting plate II 41 is fixedly connected to the lower surface of the T-shaped connecting pipe 4, a valve cover 22 is fixedly connected to the lower surface of the lower connecting plate II 41, the lower connecting plate II 41 is communicated with the inner surface of the valve cover 22, when the pressure ring 2 is not placed in the valve cover 22, the pressure ring 2 is in a U shape when being loosened, after the pressure ring 2 is placed in the valve cover 22, the valve rod 33 is completely wrapped by the pressure ring 2, the rotating rod 34 drives the valve rod 33 to rotate when rotating, the valve rod 33 rotates in the pressure ring 2, the pressure ring 2 is used for an annular space between the valve rod 33 and the valve cover 22, two connecting screws II 42 are connected between the T-shaped connecting pipe 4 and the lower connecting plate II 41, an upper sealing sleeve 43 is fixedly sleeved on the inner surface of the T-shaped connecting pipe 4, and the valve rod 33 is movably sleeved on the inner surface of the upper sealing sleeve 43.

The working principle is as follows:

the first step is as follows: before use, whether the outer surface of the valve seat 1 and the inner surface of the valve groove 11 have defects such as sand holes and cracks or not is checked, whether the connection between the valve seat 1 and the valve body 31 is firm or not is checked, whether the valve tongue 32 is matched with the valve groove 11 or not is checked, after the check is finished, the valve groove 11 is connected, the rotating rod 34 is rotated clockwise to be closed, the rotating rod 34 rotates anticlockwise to be opened, if the opening and the closing have certain resistance, an F wrench can be used for assisting, when the valve tongue cannot be opened, the valve rod 33 is not forcibly opened, the valve rod 33 is prevented from being broken, the rotating rod 34 rotates ninety degrees anticlockwise, the rotation of the rotating rod 34 drives the rotation of the valve rod 33, the valve rod 33 rotates in the upper envelope 43, the rotation of the valve tongue 32 is driven by the rotation of the valve rod 33, the valve tongue 32 rotates ninety degrees in the valve groove 11, the valve groove 11 is opened, the space of the valve sleeve 3 is larger than the valve groove 11, so that the internal pressure can be reduced during the opening and the closing, the opening rate is greatly increased.

The second step is that: when the pressure ring 2 is not placed in the valve cover 22, the pressure ring 2 is in a U shape when being loosened, the pressure ring 2 is placed in the valve cover 22, the valve rod 33 is completely wrapped by the pressure ring 2, the rotating rod 34 drives the valve rod 33 to rotate when rotating, the valve rod 33 rotates in the pressure ring 2, the pressure ring 2 is used for an annular space between the valve rod 33 and the valve cover 22, when the valve rod 33 rotates and reciprocates for a long time in the existing pressure reducing valve, the existing pressure ring 2 is a fully-closed rubber ring, the pressure ring 2 can be arched in long-time friction, the annular space between the sealed valve rod 33 and the sealed cover can generate air leakage, and the pressure reducing valve generates errors during air tightness monitoring, and the annular groove 21 is formed in the pressure ring 2, so that the air leakage caused by arching during rotation is avoided, and the air tightness monitoring errors are avoided.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", 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 simplicity of description, and do not indicate or imply that the device or element 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", "third", "fourth" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby the features defined as "first", "second", "third", "fourth" may explicitly or implicitly include at least one such feature.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a relief pressure valve with gas tightness monitoring function, includes disk seat (1), valve groove (11) have been seted up in the two sides of controlling of disk seat (1) run through, disk seat (1) is equipped with sealing device, its characterized in that outward: the sealing device comprises a pressure ring (2), an annular groove (21) is formed in the inner surface of the pressure ring (2), a valve cover (22) is sleeved on the outer surface of the pressure ring (2), an upper connecting plate (23) is fixedly connected to the lower surface of the valve cover (22), a lower connecting plate I (24) is movably connected to the lower surface of the upper connecting plate (23), and two connecting screws I (25) are movably connected between the upper connecting plate (23) and the lower connecting plate I (24);

a start-stop device is arranged outside the valve seat (1);

an upper sealing body device is arranged outside the valve seat (1).

2. The pressure reducing valve having a gas-tightness monitoring function according to claim 1, characterized in that: open and stop the device and include valve barrel (3), the internal surface fixed cup joints disk seat (1) of valve barrel (3), valve barrel (3) link up with disk seat (1) internal surface mutually, the higher authority fixedly connected with valve body (31) of valve barrel (3).

3. The pressure reducing valve having a gas-tightness monitoring function according to claim 2, characterized in that: the upper surface of the valve body (31) is fixedly connected below the lower connecting plate I (24), the valve body (31) is communicated with the inner surface of the lower connecting plate I (24), and the inner surface of the valve sleeve (3) is movably connected with a valve tongue (32).

4. A pressure reducing valve having a gas-tightness monitoring function according to claim 3, characterized in that: the upper surface of the valve tongue (32) is fixedly connected with a valve rod (33), the outer surface of the valve rod (33) is movably sleeved with an annular groove (21), and the upper surface of the valve rod (33) is fixedly connected with a rotating rod (34).

5. The pressure reducing valve having a gas-tightness monitoring function according to claim 1, characterized in that: the upper sealing body device comprises a T-shaped connecting pipe (4), a lower connecting plate II (41) is fixedly connected to the lower surface of the T-shaped connecting pipe (4), a valve cover (22) is fixedly connected to the lower surface of the lower connecting plate II (41), and the lower connecting plate II (41) is communicated with the inner surface of the valve cover (22).

6. The pressure reducing valve having a gas-tightness monitoring function according to claim 5, wherein: t shape is connected with between two (41) of lower connecting plate two (42) and is connected with two connecting screw two (4), the internal surface fixed of T shape is connected pipe (4) and is cup jointed upper envelope (43), the internal surface activity of upper envelope (43) has cup jointed valve rod (33).