CN216112241U

CN216112241U - Temperature reducing valve for steam temperature control

Info

Publication number: CN216112241U
Application number: CN202121999040.3U
Authority: CN
Inventors: 纪琳; 李长松
Original assignee: Shenyang Copaca Equipment Co ltd
Current assignee: Shenyang Copaca Equipment Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-03-22
Anticipated expiration: 2031-08-24

Abstract

The utility model relates to the technical field of steam temperature reduction, in particular to a temperature reduction valve for steam temperature control, which comprises a valve body, wherein a sleeve is fixedly connected in the middle of the inside of the valve body, a valve cover is fixedly connected to the upper end surface of the valve body, a filler assembly is fixedly connected to the upper part of the inside of the valve cover, a core bar is fixedly connected to the lower part of the inside of the sleeve, a nozzle is fixedly connected to the right side of the inside of the sleeve, a guide ring is fixedly connected to the bottom end of the inside of the valve body, a lower cover is fixedly connected to the lower end surface of the valve body, and a check core is fixedly connected to the lower part of the inside of the lower cover; according to the utility model, the flow of warm water can be regulated by the arranged core rod, when the core rod moves upwards, the valve is opened, the temperature-reducing water impacts the non-return core back to enable the non-return core to move upwards, the temperature-reducing water flows into the sleeve of the temperature-reducing valve and flows into the nozzle, and the temperature-reducing water is sprayed into the cavity of the temperature-reducing valve to be mixed with high-temperature steam, so that the steam temperature is reduced, and the steam temperature regulating device is very practical.

Description

Temperature reducing valve for steam temperature control

Technical Field

The utility model relates to the technical field of steam temperature reduction, in particular to a temperature reduction valve for steam temperature control.

Background

In the industrial production process, stable steam temperature is often needed, but actually, the steam temperature sent by a thermal power station is higher than the steam temperature needed by chemical industrial production, so a tool for reducing the steam temperature is needed, a temperature reducing device is a tool for reducing the temperature of superheated steam by spraying low-temperature water into pipeline superheated steam, and two types of temperature reducers which are commonly used at present comprise a steam pipeline, a nozzle, a temperature reducing water pipeline, a temperature reducing water regulating valve, a stop valve and a check valve.

But the number of the holes at the nozzle of the desuperheater is fixed, the atomization effect of the desuperheater water sprayed into the steam pipeline is good or bad, depending on the flow rate of the steam, when the field working condition is in the steam rated flow operation, the water spraying speed of the nozzle reaches the best, the atomization effect is good, when the field steam flow is less than the rated flow, the water spraying amount of the nozzle is small, the water spraying speed is slow, the atomization effect is poor, the other one is a direct action desuperheater, the main body part of the desuperheater is vertically suspended in the steam pipeline, the desuperheater can well solve the problem of poor atomization of the desuperheater by adjusting the number of holes at the nozzle through the actuator, but the main body part of the desuperheater is vertically suspended in the steam pipeline, the upper side of the pipeline is only provided with one fixed supporting point, and the main body part can be damaged or deformed due to the scouring of high-speed steam, so that the service life of the desuperheater is shortened, and therefore, the desuperheater valve for controlling the temperature of the steam is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a temperature reducing valve for steam temperature control, which aims to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a temperature-reducing valve for steam accuse temperature, includes the valve body, fixedly connected with sleeve in the middle of the valve body is inside, valve body up end fixedly connected with valve gap, the inside top fixedly connected with filler subassembly of valve gap, the inside below fixedly connected with core bar of sleeve, the inside right side fixedly connected with nozzle of sleeve, the inside bottom fixedly connected with guide ring of valve body, terminal surface fixedly connected with lower cover under the valve body, the inside below fixedly connected with non return core of lower cover.

Preferably, the sleeve is arranged in the valve body and is respectively fixed at the upper position and the lower position of the cavity in the valve body.

Preferably, the nozzles inside the sleeve are of a centrifugal design.

Preferably, the valve cover is pressed on the valve body and the sleeve through sealing gaskets, and the valve cover and the valve body are screwed by stud nuts.

Preferably, the core rod is arranged in the sleeve and the valve cover, and a balance hole is formed in the core of the core rod.

Preferably, a sealing seat is arranged in the lower cover, a check core is arranged in the lower cover, the check core is guided by a guide ring clamped between the lower part of the valve body and the lower cover, and a small check valve is formed below the temperature reduction valve.

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

1. according to the utility model, the flow of warm water can be regulated by the arranged core rod, when the core rod moves upwards, the valve of the valve body is opened, the temperature-reducing water impacts the non-return core back to enable the non-return core to move upwards, the temperature-reducing water flows into the sleeve of the temperature-reducing valve and flows into the nozzle, and is sprayed into the cavity of the temperature-reducing valve to be mixed with high-temperature steam to reduce the steam temperature, the up-and-down movement of the core rod controls the number of the opened nozzles to control the spraying amount of the temperature-reducing water, when the flow of inlet steam is increased, the core rod moves upwards, the number of the opened nozzles is increased, and the spraying amount of the temperature-reducing water is also increased; when the flow of the inlet steam is reduced, the core rod moves downwards, the number of the opened nozzles is reduced, the spraying amount of the desuperheating water is also reduced, the effect of controlling the steam temperature is realized, the structure is simple and compact, the steam temperature can be accurately controlled, the desuperheating effect is good, the safety and the reliability are realized, the service life is long, and the steam desuperheating device is very practical.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 at point A according to the present invention;

FIG. 3 is a schematic view of the internal structure of the nozzle of the present invention;

FIG. 4 is a schematic view of the internal structure of the sleeve of the present invention;

FIG. 5 is a schematic view of a guide ring structure according to the present invention.

In the figure: 1-valve body, 2-sleeve, 3-valve cover, 4-packing component, 5-core rod, 6-nozzle, 7-guide ring, 8-non-return core and 9-lower cover.

Detailed Description

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

Referring to fig. 1-5, the present invention provides a technical solution:

the utility model provides a steam is desuperheating valve for accuse temperature, includes valve body 1, fixedly connected with sleeve 2 in the middle of 1 inside of valve body, 1 up end fixedly connected with valve gap 3 of valve body, the inside top fixedly connected with packing assembly 4 of valve gap 3, the inside below fixedly connected with core bar 5 of sleeve 2, the inside right side fixedly connected with nozzle 6 of sleeve 2, the inside bottom fixedly connected with guide ring 7 of valve body 1, terminal surface fixedly connected with lower cover 9 under 1 of valve body, the inside below fixedly connected with non return core 8 of lower cover 9.

The sleeve 2 is arranged in the valve body and is respectively fixed at the upper position and the lower position of a cavity in the valve body 1, the nozzle 6 in the sleeve 2 adopts a centrifugal design, the valve cover 3 is pressed on the valve body 1 and the sleeve 2 through a sealing gasket, the valve cover 3 and the valve body 1 are screwed by a stud nut, the core rod 5 is arranged in the sleeve 2 and the valve cover 3, the core of the core rod 5 is provided with a balance hole, a sealing seat is arranged in the lower cover 9 and is provided with a check core 8, the check core 8 is guided by a guide ring 7 clamped between the lower part of the valve body 1 and the lower cover 9, a small check valve is formed below the temperature reduction valve, the adjustment of warm water flow can be realized, when the core rod 5 moves upwards, the valve of the valve body 1 is opened, the temperature reduction water impacts the check core 8 backwards, the check core 8 moves upwards, the temperature reduction water flows into the sleeve 2 of the temperature reduction valve, flows into the nozzle 6 and is sprayed into the cavity of the temperature reduction valve to be mixed with high-temperature steam, so as to reduce the steam temperature, the core rod 5 moves up and down to control the number of the opening nozzles 6 so as to control the spraying amount of the desuperheating water, when the flow of the inlet steam is increased, the core rod 5 moves up, the number of the opening nozzles 6 is increased, and the spraying amount of the desuperheating water is also increased; when the flow of the inlet steam is reduced, the core rod 5 moves downwards, the number of the opened nozzles 6 is reduced, the spraying amount of the desuperheating water is also reduced, the effect of controlling the steam temperature is realized, the structure is simple and compact, the steam temperature can be accurately controlled, the desuperheating effect is good, the safety and the reliability are realized, the service life is long, and the steam desuperheating device is very practical.

The working process is as follows: an electric actuator or a pneumatic actuator can be arranged on a valve cover 3 of the valve body 1, the core rod 5 is pulled to move up and down, so that the adjustment of the flow rate of the desuperheating water is realized, when the core rod 5 moves upwards, a valve of the valve body 1 is opened, the desuperheating water impacts the non-return core 8 back to enable the non-return core 8 to move upwards, the desuperheating water flows into a sleeve 2 of the desuperheating valve and flows into the nozzle 6 to be sprayed into a cavity of the desuperheating valve to be mixed with high-temperature steam so as to reduce the steam temperature, the core rod 5 moves up and down to control the number of the opened nozzles 6 so as to realize the control of the spraying amount of the desuperheating water, when the flow rate of the inlet steam is increased, the core rod 5 moves up, the number of the opened nozzles 6 is increased, and the spraying amount of the desuperheating water is also increased; when the flow of the steam at the inlet is reduced, the core rod 5 moves downwards, the number of the opened nozzles 6 is reduced, and the spraying amount of the desuperheating water is also reduced, so that the effect of controlling the temperature of the steam is realized.

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 utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a temperature-reducing valve for steam temperature control, includes valve body (1), its characterized in that: fixedly connected with sleeve (2) in the middle of valve body (1) inside, valve body (1) up end fixedly connected with valve gap (3), valve gap (3) inside top fixedly connected with packing assembly (4), sleeve (2) inside below fixedly connected with core bar (5), sleeve (2) inside right side fixedly connected with nozzle (6), valve body (1) inside bottom fixedly connected with guide ring (7), terminal surface fixedly connected with lower cover (9) under valve body (1), inside below fixedly connected with non return core (8) of lower cover (9).

2. A desuperheating valve for controlling temperature of steam according to claim 1, characterized in that: the sleeve (2) is arranged in the valve body and is respectively fixed at the upper and lower positions of the middle cavity of the valve body (1).

3. A desuperheating valve for controlling temperature of steam according to claim 1, characterized in that: the nozzles (6) inside the sleeve (2) are of a centrifugal design.

4. A desuperheating valve for controlling temperature of steam according to claim 1, characterized in that: the valve cover (3) is pressed on the valve body (1) and the sleeve (2) through a sealing gasket, and the valve cover (3) and the valve body (1) are screwed up through a stud nut.

5. A desuperheating valve for controlling temperature of steam according to claim 1, characterized in that: the core rod (5) is arranged in the sleeve (2) and the valve cover (3), and a balance hole is arranged on the core of the core rod (5).

6. A desuperheating valve for controlling temperature of steam according to claim 1, characterized in that: the lower cover (9) is internally provided with a sealing seat and a check core (8), and the check core (8) is guided by a guide ring (7) clamped between the lower part of the valve body (1) and the lower cover (9) to form a small check valve below the desuperheating valve.