Safety pressure relief device for boiler

Abstract

The utility model relates to the technical field of boiler pressure relief, and discloses a boiler safety pressure relief device which comprises a pressure relief pipe, a plug body is arranged in the pressure relief pipe in a sliding mode, a guide rod used for guiding the plug body is further fixedly installed in the pressure relief pipe, and an exhaust groove used for exhausting is formed in the guide rod. The pressurizing assembly is arranged at the end of the pressure relief pipe and used for applying pressure to the plug body, the pressurizing assembly comprises a shell and a first plug body, the first plug body is elastically connected with the shell, the shell and the pressure relief pipe are fixedly installed, and gas pushes the plug body to slide in the radial direction of the guide rod; the pressure-adjustable downward pressure is applied to the plug body through the pressurization assembly, automatic pressure relief can be achieved according to adjustment of a pressure relief threshold value, safety and efficiency are higher, kinetic energy is consumed and temperature is reduced in the air flow rising process through vertically-jetted air flow, and potential safety hazards in the pressure relief process are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler pressure relief technical field especially relates to a boiler safety pressure relief device. BACKGROUND

[0002] In order to guarantee the safe use of boiler, when the pressure of boiler reaches certain value, needs to carry out pressure relief to guarantee that the pressure in the boiler is in the safe range.

[0003] Through the retrieval, prior art discloses a kind of boiler safety pressure relief device (publication number: CN209528877U), including cross connection pipe, safety pressure relief device, complete pressure relief device and connecting member, the cross connection pipe includes horizontal pipe, vertical pipe, lift slide, pressure relief gap and limiting slide, horizontal pipe and vertical pipe are fixedly connected, horizontal pipe is communicated with vertical pipe, the left and right ends of vertical pipe upper end are all provided with lift slide and pressure relief gap, two pressure relief gaps are located at the outer end of two lift slides, the left and right sides of vertical pipe lower end are all provided with limiting slide.

[0004] Prior art is through vertical pipe cooperation elastic connecting lift plate, when lift plate slides to specific position, realizes pressure relief, since the gap for venting is opened at the port of vertical pipe, the gas discharged from the gap is discharged to the two sides, and the horizontal injection of high-temperature and high-pressure gas has certain security risk, and the pipeline around the pressure relief port is easily affected, which has optimization space.

[0005] Therefore, we propose a kind of boiler safety pressure relief device. UTILITY MODEL CONTENT

[0006] The utility model mainly solves the technical problem that the horizontal discharge of high-temperature and high-pressure gas flow has security risk, and provides a kind of boiler safety pressure relief device.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme, a kind of boiler safety pressure relief device, comprising:

[0008] Pressure relief pipe, the inside of the pressure relief pipe is slidably provided with a plug body, a guide rod for guiding the plug body is further fixedly installed in the pressure relief pipe, the plug body is slidably connected with the guide rod, and the guide rod is provided with an exhaust groove for exhaust;

[0009] Pressurizing assembly, which is arranged at the end of the pressure relief pipe to apply pressure to the plug body, the pressurizing assembly comprises a housing and a first plug body, the first plug body is elastically connected with the housing, the housing is fixedly installed with the pressure relief pipe, and the first plug body can apply adjustable force perpendicular to the end face of the plug body to the plug body.

[0010] As a preferred mode of the utility model, the pressure relief pipe is a circular pipe, a flange is fixedly installed on the lower end face of the pressure relief pipe, the plug body is a circular ring, sealing rings are arranged on the inner and outer circumferential faces of the plug body, the plug body is matched with the pressure relief pipe, and the guide rod is matched with the central hole of the plug body.

[0011] As a preferred mode of the utility model, the guide rod is a circular cylinder, the guide rod is in the same height as the pressure relief pipe, the exhaust groove is arranged on the upper end face of the guide rod and extends towards the lower end of the guide rod, and the height of the exhaust groove is greater than the thickness of the plug body.

[0012] As a preferred mode of the utility model, the upper end face of the plug body is fixedly installed with a wake pipe, and a plurality of sound attenuation bowls for reducing the speed of gas are fixedly installed in the wake pipe.

[0013] As a preferred mode of the utility model, the sound attenuation bowl is a circular pipe, the inner diameter of the sound attenuation bowl is greater than the diameter of the central hole of the plug body, the sound attenuation bowl is a circular funnel, the larger port of the sound attenuation bowl faces the plug body, adjacent two sound attenuation bowls have an overlapping part, the smaller port of the lower sound attenuation bowl is inserted into the larger port of the upper sound attenuation bowl, and the adjacent two sound attenuation bowls do not contact each other.

[0014] As a preferred mode of the utility model, the pressure increasing assembly further comprises a spring and a jacking rod, the jacking rod is fixedly connected with the first plug body, the lower end of the jacking rod abuts against the top face of the plug body, and the spring is fixedly installed on the upper end of the first plug body.

[0015] As a preferred mode of the utility model, the pressure increasing assembly further comprises a second plug body and an adjusting screw rod, the second plug body is slidably connected with the shell, the spring is located between the first plug body and the second plug body, the adjusting screw rod is threadedly connected with the shell and rotationally connected with the second plug body, and the adjusting screw rod can push the second plug body to extrude the spring.

[0016] Advantages

[0017] The utility model provides a kind of boiler safety pressure relief device. It has the following advantages:

[0018] 1. The boiler safety pressure relief device is connected with the pressure relief port of the boiler through the flange at the end of the pressure relief pipe, when the pressure of the boiler needs to be relieved, the gas with pressure enters the pressure relief pipe, the sealing between the plug body, the pressure relief pipe and the guide rod can be guaranteed by arranging the sealing ring, as the gas pressure rises, the gas pushes the plug body to slide radially along the guide rod, when the plug body slides to the position of the exhaust groove, since the depth of the exhaust groove is greater than the thickness of the plug body, the exhaust groove can discharge the high-pressure gas below the plug body, the automatic pressure relief can be realized by adjusting the downward pressure applied to the plug body by the pressurizing assembly, the automatic pressure relief can be realized according to the pressure relief threshold, the safety and efficiency are higher, and manual pressure relief is not needed, and the vertical jet flow consumes kinetic energy and is cooled during the rising process, and the safety hidden danger in the pressure relief process is reduced.

[0019] 2. The boiler safety pressure relief device is connected with the pressure relief port of the boiler through the flange at the end of the pressure relief pipe, when the pressure of the boiler needs to be relieved, the gas with pressure enters the pressure relief pipe, the sealing between the plug body, the pressure relief pipe and the guide rod can be guaranteed by arranging the sealing ring, as the gas pressure rises, the gas pushes the plug body to slide radially along the guide rod, when the plug body slides to the position of the exhaust groove, since the depth of the exhaust groove is greater than the thickness of the plug body, the exhaust groove can discharge the high-pressure gas below the plug body, the automatic pressure relief can be realized by adjusting the downward pressure applied to the plug body by the pressurizing assembly, the automatic pressure relief can be realized according to the pressure relief threshold, the safety and efficiency are higher, and manual pressure relief is not needed, and the vertical jet flow consumes kinetic energy and is cooled during the rising process, and the safety hidden danger in the pressure relief process is reduced.

[0020] 3. The boiler safety pressure relief device is connected with the pressure relief port of the boiler through the flange at the end of the pressure relief pipe, when the pressure of the boiler needs to be relieved, the gas with pressure enters the pressure relief pipe, the sealing between the plug body, the pressure relief pipe and the guide rod can be guaranteed by arranging the sealing ring, as the gas pressure rises, the gas pushes the plug body to slide radially along the guide rod, when the plug body slides to the position of the exhaust groove, since the depth of the exhaust groove is greater than the thickness of the plug body, the exhaust groove can discharge the high-pressure gas below the plug body, the automatic pressure relief can be realized by adjusting the downward pressure applied to the plug body by the pressurizing assembly, the automatic pressure relief can be realized according to the pressure relief threshold, the safety and efficiency are higher, and manual pressure relief is not needed, and the vertical jet flow consumes kinetic energy and is cooled during the rising process, and the safety hidden danger in the pressure relief process is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the overall perspective view of the utility model;

[0022] Figure 2 It is the partial cutaway view of the pressure relief pipe of the utility model;

[0023] Figure 3 It is the partial cutaway view of the plug body of the utility model;

[0024] Figure 4 It is the perspective view of the guide rod of the utility model;

[0025] Figure 5 It is the partial cutaway view of the shell of the utility model.

[0026] Legend: 10, pressure relief pipe; 11, plug body; 12, guide rod; 13, wake pipe; 14, muffler bowl; 15, exhaust groove; 20, shell; 21, first plug body; 22, spring; 23, jacking rod; 24, second plug body; 25, adjusting screw. DETAILED DESCRIPTION

[0027] A boiler safety pressure relief device, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes:

[0028] The pressure relief pipe 10 has a plug 11 slidably installed inside it. A guide rod 12 for guiding the plug 11 is also fixedly installed inside the pressure relief pipe 10. The plug 11 and the guide rod 12 are slidably connected. The guide rod 12 has an exhaust groove 15 for venting. The pressure relief pipe 10 is a circular pipe. A flange is fixedly installed on the lower end face of the pressure relief pipe 10. The plug 11 is a circular ring. Both the inner and outer circumferential surfaces of the plug 11 are provided with sealing rings. The plug 11 is adapted to the pressure relief pipe 10. The guide rod 12 is adapted to the center hole of the plug 11. The guide rod 12 is a cylinder. The guide rod 12 is at the same height as the pressure relief pipe 10. The exhaust groove 15 is opened on the upper end face of the guide rod 12 and extends to the lower end of the guide rod 12. The height of the exhaust groove 15 is greater than the thickness of the plug 11.

[0029] In this scheme, the pressure relief pipe 10 is connected to the pressure relief port of the boiler via a flange at the end. When the boiler pressure rises and pressure relief is required, pressurized gas enters the pressure relief pipe 10. By setting a sealing ring, the sealing between the plug body 11, the pressure relief pipe 10, and the guide rod 12 can be guaranteed. As the gas pressure rises, the gas pushes the plug body 11 to slide radially along the guide rod 12. When the plug body 11 slides to the position of the exhaust groove 15, since the depth of the exhaust groove 15 is greater than the thickness of the plug body 11, the exhaust groove 15 will discharge the high-pressure gas below the plug body 11, thus achieving pressure relief. An adjustable downward pressure is applied to the plug body 11 through the pressurization component, which can adjust according to the pressure relief threshold to achieve automatic pressure relief, which is safer and more efficient, and does not require manual active pressure relief.

[0030] like Figure 3 As shown, a tailpipe 13 is fixedly installed on the upper end face of the plug body 11. Several silencers 14 for decelerating the gas are fixedly installed inside the tailpipe 13. The silencers 14 are round tubes with an inner diameter larger than the diameter of the central hole of the plug body 11. The silencers 14 are circular funnels with the larger port of the silencers 14 facing the plug body 11. Adjacent silencers 14 have overlapping parts. The smaller port of the lower silencer 14 is inserted into the larger port of the upper silencer 14. Adjacent silencers 14 do not contact each other.

[0031] Considering the danger of the high-temperature and high-pressure gas discharged from the exhaust trough 15, the tailpipe 13 and multiple exhaust troughs 15 inside the tailpipe 13 form a channel similar to a one-way valve inside the tailpipe 13. Through the channel, the bundle of high-pressure airflow ejected from the exhaust trough 15 is gradually slowed down and its kinetic energy is consumed, so that the depressurized gas can be slowly discharged in the vertical direction, further improving the safety of the depressurization process.

[0032] As Figure 3 and Figure 5 As shown in the pressure assembly, which is arranged at the end of the pressure relief pipe 10 to apply pressure to the plug body 11, the pressure assembly comprises a shell 20 and a first plug body 21, the first plug body 21 is elastically connected with the shell 20, the shell 20 is fixedly installed with the pressure relief pipe 10, the first plug body 21 can apply adjustable force perpendicular to the end face of the plug body 11, the pressure assembly further comprises a spring 22 and a top rod 23, the top rod 23 is fixedly connected with the first plug body 21, the lower end of the top rod 23 abuts against the top surface of the plug body 11, the spring 22 is fixedly installed at the upper end of the first plug body 21, the pressure assembly further comprises a second plug body 24 and an adjusting screw 25, the second plug body 24 is slidingly connected with the shell 20, the spring 22 is located between the first plug body 21 and the second plug body 24, the adjusting screw 25 is threadedly connected with the shell 20 and rotationally connected with the second plug body 24, the adjusting screw 25 can push the second plug body 24 to extrude the spring 22;

[0033] As a supplement to the above scheme, in order to realize the adjustment of the pressure applied to the plug body 11, the adjusting screw 25 is rotated, the adjusting screw 25 pushes the second plug body 24 to slide in the shell 20, the shell 20 is a cylinder, the second plug body 24 and the first plug body 21 are adapted with the shell 20, the pressure value of the spring 22 to the first plug body 21 is adjusted by extruding the spring 22 through the second plug body 24, and then the resistance of the plug body 11 to move upward is adjusted to realize the adjustment of the pressure relief value, which can be adjusted according to the requirements, and the adjustability is stronger.

[0034] The working principle of the utility model: rotate the adjusting screw 25, the adjusting screw 25 pushes the second plug body 24 to slide in the shell 20, the shell 20 is a cylinder, the second plug body 24 and the first plug body 21 are adapted with the shell 20, the pressure value of the spring 22 to the first plug body 21 is adjusted by extruding the spring 22 through the second plug body 24, and then the resistance of the plug body 11 to move upward is adjusted to realize the adjustment of the pressure relief value, when the boiler pressure rises and needs to be relieved, the gas with pressure enters the pressure relief pipe 10, the sealing between the plug body 11 and the pressure relief pipe 10 and the guide rod 12 can be guaranteed by setting the sealing ring, as the gas pressure rises, the plug body 11 is pushed by the gas to slide along the guide rod 12 radially, when the plug body 11 slides to the position where the exhaust groove 15 is located, since the depth of the exhaust groove 15 is greater than the thickness of the plug body 11, the exhaust groove 15 will discharge the high pressure gas below the plug body 11 to realize pressure relief, through the tail flow pipe 13 and the plurality of exhaust grooves 15 in the tail flow pipe 13, the plurality of exhaust grooves 15 make the tail flow pipe 13 form a channel similar to a one-way valve inside, the jet beam-shaped high pressure gas flow ejected from the exhaust groove 15 is gradually decelerated and the kinetic energy is consumed through the channel, so that the gas relieved can be slowly discharged in the vertical direction, and the safety of the pressure relief process is guaranteed.

[0035] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A boiler safety relief device, characterized by, The utility model relates to a pressure relief pipe (10) is internally slidably provided with a plug body (11), a guide rod (12) for guiding the plug body (11) is fixedly installed in the pressure relief pipe (10), the plug body (11) is slidably connected with the guide rod (12), and the guide rod (12) is provided with an exhaust groove (15) for exhausting. A pressurizing assembly is arranged at the end of the pressure relief pipe (10) to apply pressure to the plug body (11), and the pressurizing assembly comprises a shell (20) and a first plug body (21), the first plug body (21) is elastically connected with the shell (20), the shell (20) is fixedly installed with the pressure relief pipe (10), and the first plug body (21) can apply an adjustable force perpendicular to the end face of the plug body (11) to the plug body (11). The pressure relief pipe (10) is a circular pipe, the lower end face of the pressure relief pipe (10) is fixedly installed with a flange, the plug body (11) is a circular ring, the inner and outer circumferential faces of the plug body (11) are provided with sealing rings, the plug body (11) is matched with the pressure relief pipe (10), and the guide rod (12) is matched with the central hole of the plug body (11).

2. A boiler relief device according to claim 1, characterised in that: The guide rod (12) is a circular cylinder, the guide rod (12) is in the same height as the pressure relief pipe (10), the exhaust groove (15) is arranged at the upper end face of the guide rod (12) and extends to the lower end of the guide rod (12), and the height of the exhaust groove (15) is greater than the thickness of the plug body (11).

3. A boiler relief device according to claim 1, wherein: The upper end face of the plug body (11) is fixedly installed with a wake pipe (13), and the wake pipe (13) is fixedly installed with a plurality of sound attenuation bowls (14) for slowing down gas.

4. The boiler relief device of claim 1, wherein: The sound attenuation bowl (14) is a circular pipe, the inner diameter of the sound attenuation bowl (14) is greater than the diameter of the central hole of the plug body (11), the sound attenuation bowl (14) is a circular funnel, the larger port of the sound attenuation bowl (14) faces the plug body (11), adjacent two sound attenuation bowls (14) have an overlapping part, the smaller port of the lower sound attenuation bowl (14) is inserted into the larger port of the upper sound attenuation bowl (14), and the adjacent two sound attenuation bowls (14) do not contact each other.

5. A boiler relief device according to claim 4, wherein: The pressurizing assembly further comprises a spring (22) and a top rod (23), the top rod (23) is fixedly connected with the first plug body (21), the lower end of the top rod (23) abuts against the top face of the plug body (11), and the spring (22) is fixedly installed at the upper end of the first plug body (21).

6. The boiler relief device of claim 1, wherein: The pressurizing assembly further comprises a second plug body (24) and an adjusting screw rod (25), the second plug body (24) is slidably connected with the shell (20), the spring (22) is located between the first plug body (21) and the second plug body (24), the adjusting screw rod (25) is threadedly connected with the shell (20) and rotationally connected with the second plug body (24), and the adjusting screw rod (25) can push the second plug body (24) to extrude the spring (22).

7. A boiler relief device according to claim 6, wherein: ​

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