Self-operated regulating valve of fireproof structure

Abstract

The utility model relates to a self-operated regulating valve of a fireproof structure, which comprises a fireproof cut-off plate and a fireproof actuator, the fireproof cut-off plate is arranged at the position of a medium regulating inlet in a valve body, the fireproof cut-off plate is a semicircular fireproof plate, and the fireproof cut-off plate is connected with the fireproof actuator through a connecting shaft to rotate. A temperature detector is arranged at the bottom of the fireproof actuator and extends into the medium channel in the valve body, a fire alarm is arranged at the top of the fireproof actuator, and when no fire occurs, the fireproof cut-off plate is folded in the valve body above the medium adjusting inlet, and when the fire occurs, the fireproof cut-off plate rotates and falls down to block the medium adjusting inlet; the utility model has the beneficial effects of cutting off the fire spreading trend, giving an alarm, killing the fire at the initial stage, hindering the spreading of the fire, reducing the damage rate of the fire pipeline, reducing the burning degree of the fire pipeline, improving the fire resistance of the pipeline, reducing or even eliminating casualties, and reducing property loss.

Description

Technical Field

[0001] The utility model relates to the technical field of fireproof structure regulating valves, in particular to a self-operated regulating valve of a fireproof structure. Background Art

[0002] A regulating valve is a valve used to adjust process parameters such as medium flow, pressure, temperature, liquid level, etc. in the field of industrial automation process control. It automatically adjusts the valve opening according to the control signal in the automation system, thereby achieving the regulation of medium flow, pressure, temperature and liquid level.

[0003] If a fire or high-temperature smoldering occurs in a pipeline with a traditional regulating valve, the regulating valve cannot cut off the flame in time and cannot isolate the high-temperature spread, which can easily cause the regulating valve seal to be damaged and fail to perform the sealing function, causing the flame and smoke to spread to the entire pipeline, causing the fire to spread and expand on the entire pipeline, causing the entire pipeline to be burned, affecting normal production, and causing casualties and property losses. Summary of the invention

[0004] In order to solve the technical problem that the seal of the regulating valve is easily damaged and the fire tendency cannot be cut off, the utility model provides a self-operated regulating valve with a fireproof structure, which is connected to a fireproof cut-off plate through a fireproof actuator with a temperature detector. When a fire occurs, the fireproof cut-off plate quickly blocks the medium regulating inlet to cut off the flame and high-temperature smoke and prevent the flame and high-temperature smoke from spreading. The sealing performance of the entire valve is improved through the clamping structure of the metal sealer. Even if the high temperature damages the O-ring, the metal sealer can still seal the regulating valve as a whole to block the spread of flame and high-temperature smoke, reduce the burning degree of the fire, and reduce casualties and property losses caused by the fire.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A self-operated regulating valve with a fireproof structure comprises a valve body, a balancing cylinder, a valve seat, a valve plug and a sleeve. The valve body is provided with a sleeve along the medium flow direction, and a balancing cylinder, a valve seat and a valve plug are provided perpendicular to the medium flow direction. The valve plug adjusts the medium flow through a valve stem and a spring. The self-operated regulating valve with a fireproof structure also comprises a fireproof cut-off plate and a fireproof actuator. The fireproof cut-off plate is arranged at the medium regulating inlet position in the valve body. The fireproof cut-off plate is a semicircular fireproof plate. The fireproof cut-off plate is connected and rotated with the fireproof actuator through a connecting shaft. A temperature detector is arranged at the bottom of the fireproof actuator, and the temperature detector extends into the medium channel in the valve body. A fire alarm is arranged on the top of the fireproof actuator. When no fire occurs, the fireproof cut-off plate is retracted in the valve body above the medium regulating inlet. When a fire occurs, the fireproof cut-off plate rotates and falls to block the medium regulating inlet.

[0007] Furthermore, the self-operated regulating valve with the fireproof structure also includes a metal sealer, which is a special-shaped metal ring with a bend. An O-ring is arranged at one end of the metal sealer close to the valve plug, a clamping ring is arranged at the bend of the metal sealer, a plurality of connecting columns are arranged at the top of the clamping ring, and the other end of the connecting column is connected to a compression spring.

[0008] Furthermore, the fireproof cutting plate is made of fireproof and heat-insulating material.

[0009] Furthermore, the connecting column and the clamping spring are arranged in the valve body and are evenly compressed on the upper surface of the mid-diameter circumference of the clamping ring.

[0010] Furthermore, a sealing layer is provided on the side of the fireproof cut-off plate close to the valve plug.

[0011] Furthermore, the sealing layer is made of aerogel felt.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. When a fire occurs, the fire-proof cut-off plate is used to cut off the fire spreading tendency at the medium regulating entrance position, and an alarm is sounded at the same time to kill the fire in the initial stage, hinder the spread of the fire, reduce the damage rate of the fire pipeline, reduce the burning degree of the fire pipeline, improve the fire resistance of the pipeline, reduce or even eliminate casualties, and reduce property losses.

[0014] 2. The metal sealer with a compression ring improves the sealing of the regulating valve. The bending position of the metal sealing ring is compressed, and the metal sealer is tensioned and sealed at the valve plug position, thereby improving the sealing degree of the regulating valve itself. In case of fire, even if the O-ring in the middle of the metal sealer is damaged, the compression characteristics of the compression spring can be used to compress the metal sealer to seal the valve plug, thereby improving the sealing of the valve body in a fire and preventing flames and high-temperature smoke from entering other positions of the pipeline through the valve plug, thereby achieving good sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a schematic diagram of a self-operated regulating valve structure with a fireproof structure.

[0016] Figure 2 It is a schematic diagram of the structure of a regulating valve for cutting off a medium channel by a fire-proof cutting plate according to the utility model.

[0017] Figure 3 It is a schematic diagram of the end face appearance described in the utility model.

[0018] Figure 4 It is a schematic diagram of the structure of the metal sealer described in the utility model.

[0019] In the figure: 1. Sealing layer; 2. Fire cut-off plate; 3. Fire alarm; 4. Fire actuator; 5. Connecting shaft; 6. Temperature detector; 7. Valve body; 8. Valve seat; 9. Sleeve; 10. Valve plug; 11. Metal sealer; 12. O-ring; 13. Pressure ring; 14. Connecting column; 15. Pressure spring; 16. Balance cylinder; 17. Spring; 18 Valve stem; 19. Medium channel; 20. Medium adjustment inlet. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings:

[0021] like Figure 1-Figure 4 As shown, the working principle of a self-operated regulating valve with a fireproof structure is as follows: a temperature detector 6 is used to detect the medium temperature in a medium channel 19. When the temperature exceeds a threshold value, a fire or smoldering without fire is very likely to occur in the medium channel 19. The fireproof actuator 4 controls the connecting shaft 5 to rotate the fireproof cut-off plate 2. When the fireproof cut-off plate 2 falls, the fire alarm 3 sounds a fire alarm. The fireproof cut-off plate 2 cuts off the flow of medium, flame and high-temperature smoke in the medium channel 19, and cuts off the remaining pipelines not affected by the fire from the fire pipeline. The sealing performance of the regulating valve is improved by the metal sealer 11. When a fire occurs, the O-ring 12 is damaged, and the clamping force of the clamping spring 15 is increased, so that the deformation of the metal sealer 11 is increased, which compensates for the sealing ability of the O-ring 12. The regulating valve is still in a sealed state to prevent flames and high-temperature smoke from entering other pipelines through the valve plug 10.

[0022] like Figure 1-Figure 4As shown, a self-operated regulating valve with a fireproof structure includes a valve body 7, a balancing cylinder 16, a valve seat 8, a valve plug 10 and a sleeve 9. The valve body 7 is provided with a sleeve 9 along the flow direction of the medium, and a balancing cylinder 16, a valve seat 8 and a valve plug 10 are provided perpendicular to the flow direction of the medium. The valve plug 10 adjusts the flow of the medium through a valve stem 18 and a spring 17. The self-operated regulating valve with a fireproof structure also includes a fireproof cut-off plate 2 and a fireproof actuator 4. The fireproof cut-off plate 2 is arranged at a medium regulating inlet 20 in the valve body 7. The fireproof cut-off plate 2 is a semicircular fireproof plate. The fireproof cut-off plate 2 is connected and rotated with the fireproof actuator 4 through a connecting shaft 5. When the fireproof actuator When the actuator 4 receives the dangerous data that exceeds the threshold value detected by the temperature detector 6, the fire prevention actuator 4 drives the connecting shaft 5 to rotate, rotates the fire prevention cut-off plate 2 to fall, and blocks the medium channel 19 at the position of the medium adjustment inlet 20. On the other hand, it gives an alarm instruction to the fire alarm 3. The temperature detector 6 is arranged at the bottom of the fire prevention actuator 4. The temperature detector 6 extends into the medium channel 19 in the valve body. The temperature detector 6 detects the temperature of the medium in the pipeline. When the temperature of the medium exceeds the threshold value, it indicates that there is a high-temperature substance in the pipeline or a fire has occurred. Then the temperature detector 6 will send this temperature data to the fire prevention actuator 4 to let it alarm. At the same time, the connection between the fire pipeline and other pipelines is cut off to prevent the flame from spreading to other pipelines along the medium channel 19 in the pipeline, and to prevent other pipelines from being affected, thereby reducing the burning degree of the entire pipeline, reducing property losses, and reducing casualties. A fire alarm 3 is arranged on the top of the fire actuator 4. The fire alarm 3 emits sound and light responses to attract the attention of surrounding staff and put out the fire urgently. At the same time, a fire alarm is sent to the main control room. When no fire occurs, the fire cut-off plate 2 is retracted in the valve body 7 above the medium regulating inlet 20. When a fire occurs, the fire cut-off plate 2 rotates and falls to block the medium regulating inlet 20. The fire cut-off plate 2 is a semicircular shaped fireproof plate. When the pipeline is operating normally, the surface of the fireproof cut-off plate 2 is above the connecting shaft 5, the medium channel 19 is below the connecting shaft 5, and the fireproof cut-off plate 2 is hidden in the valve body 7. When a fire occurs in the pipeline, the connecting shaft 5 rotates, and the fireproof cut-off plate 2 rotates and falls. The surface of the fireproof cut-off plate 2 just blocks the medium regulating inlet 20 below the connecting shaft 5, cutting off the medium channel 19. After the fireproof cut-off plate 2 falls, the fireproof actuator 4 pushes the connecting shaft 5 toward the valve plug 10, pushes the fireproof cut-off plate 2 to the wall of the valve body 7 close to the medium regulating inlet 20, seals the medium regulating inlet 20, and completely cuts off the tendency of flame spread.

[0023] like Figure 4As shown, further, the self-operated regulating valve with the fireproof structure also includes a metal sealer 11, which is a special-shaped metal seal ring with a bend. An O-ring 12 is arranged at one end of the metal sealer 11 near the valve plug 10, and a clamping ring 13 is arranged at the bend of the metal sealer 11. A plurality of connecting columns 14 are arranged on the top of the clamping ring 13, and a clamping spring 15 is connected to the other end of the connecting column 14. The metal sealer 11 and the O-ring 12 are sealed together at the position of the valve plug 10 to improve the sealing performance. When a fire occurs, the O-ring 12 is easily burned, the pressing force of the clamping spring 15 increases, and the clamping ring 13 presses down the metal sealer 11, so that the deformation of the bending position of the metal sealer 11 is increased. The metal sealer 11 increases the sealing performance at the position of the valve plug 10, improves the sealing performance of the regulating valve at the initial stage of a fire, and prevents high-temperature smoke or flames from entering other unburned pipelines.

[0024] Furthermore, the fireproof cutting plate 2 is made of fireproof and heat-insulating material.

[0025] like Figure 4 As shown, further, the connecting column 14 and the clamping spring 15 are arranged in the valve body 7, and are evenly compressed on the upper surface of the mid-diameter circumference of the clamping ring 13. The connecting column 14 and the clamping spring 15 are a single entity, which is arranged in the valve body 7. According to the different volumes of the regulating valve, several connecting columns 14 and the clamping springs 15 are evenly distributed on the upper surface of the mid-diameter circumference of the clamping ring 13, and work together to compress the clamping ring 13 at the bending position of the metal sealer 11.

[0026] like Figure 1-Figure 2 As shown, further, the fire-proof cut-off plate 2 is provided with a sealing layer 1 on the side close to the valve plug 10, and the sealing layer 1 is provided on the plate surface of the fire-proof cut-off plate 2 on the side close to the valve plug 10. After the fire-proof cut-off plate 2 cuts off the medium channel 19, the connecting shaft 5 pushes the fire-proof cut-off plate 2 close to the side of the valve plug 10, and presses the sealing layer 1 onto the wall of the valve body 7 on the side of the valve plug 10, completely sealing the position of the upper medium regulating inlet 20 to prevent the spread of flames.

[0027] Furthermore, the sealing layer 1 is made of aerogel felt, which is a new type of fireproof and heat-insulating material and has a good effect in preventing the spread of flames.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent substitutions or changes according to the technical scheme and concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-operated regulating valve with a fireproof structure, comprising a valve body, a balancing cylinder, a valve seat, a valve plug and a sleeve, wherein the valve body is provided with a sleeve along the flow direction of the medium, and a balancing cylinder, a valve seat and a valve plug are provided perpendicular to the flow direction of the medium, and the valve plug adjusts the flow of the medium through a valve stem and a spring, characterized in that: The self-operated regulating valve with fireproof structure also includes a fireproof cut-off plate and a fireproof actuator. The fireproof cut-off plate is arranged at the medium regulating inlet position in the valve body. The fireproof cut-off plate is a semicircular fireproof plate. The fireproof cut-off plate is connected and rotated with the fireproof actuator through a connecting shaft. A temperature detector is arranged at the bottom of the fireproof actuator. The temperature detector extends into the medium channel in the valve body. A fire alarm is arranged on the top of the fireproof actuator. When no fire occurs, the fireproof cut-off plate is retracted in the valve body above the medium regulating inlet. When a fire occurs, the fireproof cut-off plate rotates and falls to block the medium regulating inlet.

2. A self-operated regulating valve with a fireproof structure according to claim 1, characterized in that: The self-operated regulating valve with the fireproof structure also includes a metal sealer, which is a special-shaped metal ring with a bend. An O-ring is arranged at one end of the metal sealer near the valve plug, a clamping ring is arranged at the bend of the metal sealer, a plurality of connecting columns are arranged at the top of the clamping ring, and the other end of the connecting column is connected to a clamping spring.

3. The self-operated regulating valve of a fireproof structure according to claim 1, characterized in that: The fireproof cutting plate is made of fireproof heat-insulating material.

4. A self-operated regulating valve with a fireproof structure according to claim 2, characterized in that: The connecting column and the pressing spring are arranged in the valve body and are evenly pressed on the upper surface of the middle diameter circumference of the pressing ring.

5. The self-operated regulating valve of a fireproof structure according to claim 1, characterized in that: The fireproof cut-off plate is provided with a sealing layer on one side close to the valve plug.

6. A self-operated regulating valve with a fireproof structure according to claim 5, characterized in that: The sealing layer is made of aerogel felt.

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