CN218544476U - Piston type angle seat valve and nozzle connecting structure thereof - Google Patents
Piston type angle seat valve and nozzle connecting structure thereof Download PDFInfo
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- CN218544476U CN218544476U CN202222809029.7U CN202222809029U CN218544476U CN 218544476 U CN218544476 U CN 218544476U CN 202222809029 U CN202222809029 U CN 202222809029U CN 218544476 U CN218544476 U CN 218544476U
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Abstract
The utility model provides a piston angle seat valve and spout connection structure thereof, piston angle seat valve includes: the four-way valve comprises a four-way valve body, a valve clack and a telescopic mechanism; the four-way valve body includes: a first port, a second port, a third port and a fourth port; a valve seat matched with the valve clack is arranged in the first port; the valve clack is movably arranged in the four-way valve body in the direction close to and far away from the valve seat; the fourth port and the first port are coaxially and oppositely arranged; a blind plate is arranged at the edge of the fourth port; the telescopic part of the telescopic mechanism extends into the four-way valve body from the outside through a via hole on the blind plate to be connected with the valve clack and is used for driving the valve clack to move so as to open and close the first port. The utility model discloses the both ends of telescopic part of telescopic machanism obtain the support of blind plate and valve clack respectively, and shock resistance greatly increased is difficult to damage relative prior art, has prolonged the life of piston angle seat valve greatly.
Description
Technical Field
The utility model belongs to the technical field of boiler soot blower technique and specifically relates to a piston angle seat valve and spout connection structure that can be used to control spout break-make.
Background
The soot blower belongs to an auxiliary boiler and has the functions of blowing off accumulated soot on a heating surface of a boiler in the running process of the boiler, reducing the resistance of smoke and wind and improving the heat exchange efficiency. The soot blowing effect of the soot blower directly influences the operation load and the thermal efficiency of the boiler, and has very important significance on the normal operation and the economic benefit of the boiler.
Outside the oil gas removing boiler, most of power generation/heat supply boilers using coal, biomass, garbage and the like as fuels and most of industrial waste heat boilers need to be provided with soot blowers.
The boiler soot blowers are of various types, and the more common types include steam soot blowers, hydraulic soot blowers, sound wave soot blowers, explosion pulse shock wave soot blowers, gas gun type pulse shock wave soot blowers and the like. The explosion pulse shock wave soot blower is also called as deflagration pulse shock wave soot blower, thermal explosion pulse shock wave soot blower, weak explosion pulse shock wave soot blower, deflagration shock wave soot blower, explosion shock wave soot blower and the like, is called as deflagration soot blower, thermal explosion soot blower, weak explosion soot blower, pulse soot blower, shock wave soot blower, explosion wave soot blower and the like for short, belongs to a new soot blower, and has only twenty years of development history in China. The soot blower mainly performs soot blowing by means of comprehensive effects of impact of compression shock waves generated by explosion of premixed combustible gas or other explosion agents and the like, and because the shock waves do not cause serious scouring wear to heating surfaces of a boiler tube bundle and the like steam soot blowing, the soot blower is low in manufacturing cost and low in failure rate and operation cost, and the soot blower is quite popular in application.
The explosion pulse shock wave soot blower mainly comprises an explosion pulse shock wave generator and a nozzle: the explosion pulse shock wave generator, also called pulse generator, shock wave generator, etc., also called explosion tank, deflagration tank, explosion tank, thermal explosion tank, etc., is the place where combustible premixed gas or other explosion agent is exploded, and also is the most important part of the explosion pulse shock wave soot blower, and is generally installed outside the furnace wall of the boiler.
The outlet of the nozzle is penetrated through the furnace wall and extended into the flue of the boiler, the inlet is connected with the outlet of the pulse shock wave generator directly or through the shock wave guide tube, and the compressed shock wave generated by the pulse shock wave generator is transmitted into the flue of the boiler through the nozzle to blow the soot. The gas gun type pulse shock wave soot blower is also called as gas energy pulse shock wave soot blower, is evolved by domestic science and technology personnel through an air gun, mainly comprises a gas gun type pulse shock wave generator and a nozzle, the gas gun type pulse shock wave generator mainly comprises a pressure container and a pulse valve, soot blowing is carried out by utilizing the comprehensive effects of instantaneous opening of the pulse valve, instantaneous release of pressure gas to generate compression shock waves, impact of the compression shock waves and the like, and the pressure gas comprises steam, compressed air, compressed nitrogen and the like. Compared with an explosion pulse shock wave soot blower, the explosion pulse shock wave soot blower has the advantages that gas is not needed, so that the explosion pulse shock wave soot blower is safer, the opening of a pulse valve belongs to mechanical action, the action speed of the pulse valve is different from the explosion speed of the explosion pulse shock wave soot blower by orders of magnitude, so that the generated compression shock wave is not strong, the soot blowing effect of the compression shock wave is not obvious enough, soot blowing is performed by means of direct blowing of suddenly ejected air flow, the blowing range is limited, and the boiler tube bundle is easily subjected to 'tube explosion' due to scouring and abrasion, so that the explosion pulse shock wave soot blower is not adopted.
The nozzle of the gas gun type pulse shock wave soot blower is also called as a spray pipe and is basically the same as the nozzle of the explosion pulse shock wave soot blower.
A boiler typically includes a plurality or even many heat exchangers that require soot blowing, distributed at different locations in the boiler flue, and thus a boiler typically requires multiple or many soot blowers. In boilers employing pulse shock sootblowers, a number of individual nozzles are typically installed at different locations in a single boiler because the nozzles are typically stationary and the effective sootblowing range of a single nozzle is limited.
For some purposes, it is sometimes desirable to provide a valve for the nozzle to control the on-off of the nozzle, but the existing valve is easily damaged, has a short service life, and needs to be maintained or replaced frequently due to the harsh working environment of the nozzle, especially the very strong impact and vibration of the valve caused by the shock wave and the pulse jet during soot blowing, thereby resulting in high maintenance and use cost and being not feasible.
In some cases, it is desirable to use the three-way angle seat valve in a pulse shock wave soot blowing system, on one hand, the on-off of the nozzle is controlled, on the other hand, the pulse shock wave and the pulse jet flow can conveniently pass through the straight channel of the three-way angle seat valve, but the valve clack of the existing three-way angle seat valve is basically not contacted with the inner cylindrical surface of the valve body, the valve rod only has a fulcrum at one end of the cylinder body of the telescopic mechanism, and the other end is a cantilever.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a piston angle seat valve and spout connection structure thereof to solve at least one above-mentioned technical problem who exists among the prior art.
In order to solve the technical problem, the utility model provides a pair of piston angle seat valve, include: the four-way valve comprises a four-way valve body, a valve clack and a telescopic mechanism;
the four-way valve body includes: a first port, a second port, a third port and a fourth port;
a valve seat matched with the valve clack is arranged in the first port;
the valve clack is arranged in the four-way valve body in a sliding manner in the directions close to and far away from the valve seat;
the fourth port and the first port are coaxially and oppositely arranged; a blind plate is arranged at the edge of the fourth port;
the telescopic part of the telescopic mechanism extends into the four-way valve body from the outside through a via hole on the blind plate to be connected with the valve clack and is used for driving the valve clack to move so as to open and close the first port.
Further, the second port and the third port are coaxially and oppositely arranged; the first port and the fourth port are arranged perpendicular to the second port and the third port.
Furthermore, the telescopic mechanism is an electric, pneumatic or hydraulic telescopic mechanism. For example, the telescoping mechanism is an electric push cylinder, an air cylinder or a hydraulic cylinder.
Further, the main body of the telescopic mechanism is fixed on the blind plate.
Further, a sealing structure is arranged between the via hole and the telescopic part of the telescopic mechanism.
Further, the valve clack is a plunger piston; or the cross section of the valve clack is U-shaped (or front disc-shaped);
the valve clack is provided with a sealing working end face at one side of the valve seat; and a sealing end face matched with the sealing working end face is arranged on one side of the valve clack of the valve seat.
And in the valve closing state, metal hard seal is formed between the valve clack and the valve seat.
Further, the cross section of the valve clack is H-shaped.
Further, a soft sealing element is arranged on one side of the valve seat of the valve clack; and a pressure plate is fixed on the end face of the outer side of the soft sealing element, and the outer diameter of the pressure plate is smaller than the inner diameter of the valve seat.
Further, the soft sealing element is a rubber element, a polytetrafluoroethylene plastic element or a ceramic fiber element.
Furthermore, the valve clack is arranged on one side of the valve seat, and the inner hole of the valve seat is in a horn mouth shape matched with the cone table in a sealing mode.
The controller is respectively connected with the first position sensor, the second position sensor and the telescopic mechanism and determines the position information of the valve clack according to the feedback information of the first position sensor and the second position sensor; the controller controls the valve clack to reciprocate through the telescopic mechanism.
The application discloses a second aspect of the nozzle connecting structure with the piston type angle seat valve, wherein the piston type angle seat valve is used as a communication node and is arranged on a conveying pipeline of soot blower working medium; the second port and the third port are used as an inlet and an outlet and are respectively communicated with the conveying pipelines at two sides; the first port is connected with the spout.
Adopt above-mentioned technical scheme, the utility model discloses following beneficial effect has:
the utility model provides a piston angle seat valve, the both ends of telescopic part (also known as valve rod) of telescopic machanism obtain the support of blind plate and valve clack respectively, and shock resistance greatly increased is difficult to damage relative prior art, has prolonged the life of piston angle seat valve greatly.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments or the description in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a piston-type angle seat valve according to an embodiment of the present invention;
FIG. 2 is a top view of the piston-type angle seat valve shown in FIG. 1;
fig. 3 is a schematic structural diagram of another embodiment of the piston type angle seat valve in the embodiment.
Reference numerals:
600-four-way valve body; 601-a first port; 602-a second port; 603-a third port; 604-a fourth port; 605-a first position sensor; 606-a second position sensor; 620-valve seat; 630-a flange; 640-a blind plate; 700-valve flap; 730-a soft seal; 800-a telescoping mechanism; 830-telescoping section.
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 should 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.
The present invention will be further explained with reference to specific embodiments.
As shown in fig. 1-2, the present embodiment provides a piston type angle seat valve including: a four-way valve body 600, a valve clack 700 and a telescopic mechanism 800;
the four-way valve body 600 includes: a first port 601, a second port 602, a third port 603, and a fourth port 604;
a valve seat 620 matched with the valve clack 700 is arranged in the first port 601;
the valve flap 700 is movably disposed within the four-way valve body 600 in a direction toward and away from the valve seat 620;
the fourth port 604 and the first port 601 are coaxially and oppositely arranged; a blind plate 640 is arranged at the port edge of the fourth port 604; specifically, the blind plate 640 is fixedly attached to the flange 630 at the fourth port 604.
The telescopic part 830 of the telescopic mechanism 800 extends into the four-way valve body 600 from the outside through a through hole on the blind plate 640 to be connected with the valve flap 700, and is used for driving the valve flap 700 to move, so as to open and close the first port 601.
Further, the second port 602 and the third port 603 are coaxially and oppositely arranged; the first port 601 and the fourth port 604 are arranged perpendicular to the second port 602 and the third port 603.
Further, the telescopic mechanism 800 is an electric, pneumatic or hydraulic telescopic mechanism 800. For example, the telescoping mechanism 800 is an electric push cylinder, an air cylinder, or a hydraulic cylinder.
Further, the main body of the telescoping mechanism 800 is fixed to the blind plate 640.
Further, a sealing structure is provided between the via hole and the telescopic portion 830 of the telescopic mechanism 800.
Further, the valve flap 700 is a plunger-like piston; alternatively, the cross section of the valve flap 700 is U-shaped (or front disk);
the valve clack 700 is provided with a sealing working end face at one side of the valve seat 620; the valve seat 620 is provided with a sealing end face matched with the sealing working end face on one side of the valve flap 700.
In the closed state, a metal-to-metal seal is formed between the valve flap 700 and the valve seat 620.
Further, the cross section of the valve flap 700 is H-shaped, and a soft seal 730 is arranged on one side of the valve seat 620 of the valve flap 700; and a pressure plate is fixed on the outer side end face of the soft sealing member 730, and the outer diameter of the pressure plate is smaller than the inner diameter of the valve seat 620.
Further, the soft sealing member 730 is a rubber member, a teflon plastic member (or other plastic members), or a ceramic fiber member.
Further, the valve flap 700 is provided with a cone portion on one side of the valve seat 620, and an inner hole of the valve seat 620 is in a horn mouth shape matched with the cone portion in a sealing manner.
Further, the valve further comprises a controller, a first position sensor 605 and a second position sensor 606, wherein the first position sensor 605 and the second position sensor 606 are used for detecting the position information of the valve flap 700, the controller is respectively connected with the first position sensor 605, the second position sensor 606 and the telescoping mechanism 800, the position information of the valve flap 700 is determined according to the feedback information of the first position sensor 605 and the second position sensor 606, and the reciprocating movement of the valve flap 700 is controlled through the telescoping mechanism 800. In this embodiment, the first position sensor 605 and the second position sensor 606 are respectively inserted into the main body of the telescopic mechanism 800, and the stroke position of the valve flap 700 is indirectly obtained by detecting the moving stroke of the inner end of the telescopic part 830 in the main body.
The application discloses a second aspect of the nozzle connecting structure with the piston type angle seat valve, wherein the piston type angle seat valve is used as a communication node and is arranged on a conveying pipeline of soot blower working medium; the second port 602 and the third port 603 are used as an inlet and an outlet and are respectively communicated with conveying pipelines at two sides; the first port 601 is connected to the spout.
The utility model provides a piston angle seat valve, the both ends of telescopic part 830 (also known as valve rod) of telescopic machanism 800 obtain blind plate 640 and valve clack 700's support respectively, and shock resistance greatly increased is difficult to damage compared with prior art, has prolonged the life of piston angle seat valve greatly.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (9)
1. A piston type angle seat valve, comprising: the four-way valve comprises a four-way valve body, a valve clack and a telescopic mechanism;
the four-way valve body includes: a first port, a second port, a third port and a fourth port;
a valve seat matched with the valve clack is arranged in the first port;
the valve clack is arranged in the four-way valve body in a sliding manner in the directions close to and far away from the valve seat;
the fourth port and the first port are coaxially and oppositely arranged; a blind plate is arranged at the edge of the fourth port;
the telescopic part of the telescopic mechanism extends into the four-way valve body from the outside through a via hole on the blind plate to be connected with the valve clack and is used for driving the valve clack to move so as to open and close the first port.
2. The piston type angle seat valve as claimed in claim 1, wherein the second port and the third port are coaxially and oppositely disposed; the first port and the fourth port are arranged perpendicular to the second port and the third port.
3. The piston type angle seat valve as defined in claim 1, wherein a body of the telescoping mechanism is secured to the blind plate.
4. The piston type angle seat valve as claimed in claim 1, wherein a sealing structure is provided between the through hole and the telescoping portion of the telescoping mechanism.
5. The piston type angle seat valve as claimed in claim 1, wherein said flap is a plunger-like piston; or the cross section of the valve clack is U-shaped;
the valve clack is provided with a sealing working end face at one side of the valve seat; a sealing end face matched with the sealing working end face is arranged on one side of the valve clack of the valve seat;
and in the valve closing state, metal hard seal is formed between the valve clack and the valve seat.
6. The piston-type angle seat valve as claimed in claim 1, characterized in that said flap is provided with a soft seal on the side of said seat; and a pressure plate is fixed on the end face of the outer side of the soft sealing element, and the outer diameter of the pressure plate is smaller than the inner diameter of the valve seat.
7. The piston type angle seat valve as claimed in claim 1, wherein the valve flap is provided with a frustum portion at one side of the valve seat, and the inner hole of the valve seat is of a bell mouth shape which is matched with the frustum portion in a sealing manner.
8. The piston type angle seat valve as claimed in claim 1, further comprising a controller, a first position sensor and a second position sensor, wherein the first position sensor and the second position sensor are used for detecting the position information of the valve clack, the controller is respectively connected with the first position sensor, the second position sensor and the telescopic mechanism, and determines the position information of the valve clack according to the feedback information of the first position sensor and the second position sensor; the controller controls the valve clack to reciprocate through the telescopic mechanism.
9. A nozzle connection structure with a piston type angle seat valve as claimed in any one of claims 1 to 8, characterized in that the piston type angle seat valve is arranged on a conveying pipeline of a soot blower working medium as a communication node; the second port and the third port are used as an inlet and an outlet and are respectively communicated with the conveying pipelines on two sides; the first port is connected with the spout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222809029.7U CN218544476U (en) | 2022-10-25 | 2022-10-25 | Piston type angle seat valve and nozzle connecting structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222809029.7U CN218544476U (en) | 2022-10-25 | 2022-10-25 | Piston type angle seat valve and nozzle connecting structure thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218544476U true CN218544476U (en) | 2023-02-28 |
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ID=85279532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222809029.7U Active CN218544476U (en) | 2022-10-25 | 2022-10-25 | Piston type angle seat valve and nozzle connecting structure thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218544476U (en) |
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2022
- 2022-10-25 CN CN202222809029.7U patent/CN218544476U/en active Active
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