Safety relief valve for boiler pipeline

Abstract

The utility model provides a safety relief valve for a boiler pipeline. The safety relief valve comprises a three-way pipe body and a pressure adjusting assembly. The three-way pipe body comprises an air inlet pipe opening, an air outlet pipe opening and a pressure adjusting opening. The pressure adjusting assembly comprises an air leakage pipe, a pressure conduction piece and an adjusting piece. A perspective piece is installed on the side wall of the air leakage pipe, and pressure threshold value scales are arranged on the perspective piece. The pressure conduction piece is installed in the air leakage pipe, and the moving stroke range of the first end of the pressure conduction piece is at least located in the perspective range of the perspective piece. The adjusting piece is connected with the first end of the pressure conduction piece and used for adjusting the stroke of the pressure conduction piece so as to control the pressure threshold value of the pressure conduction piece. When the gas release threshold value needs to be adjusted, the pressure threshold value can be adjusted by watching the direction of the first end of the pressure conduction piece on the surface of the perspective piece, so that gas does not need to be introduced into the three-way pipe body, and the three-way pipe is convenient and does not have danger.

Description

Technical Field

[0001] This application belongs to the technical field of boiler pressure relief valves, and particularly relates to a safety pressure relief valve for boiler pipelines. Background Art

[0002] A pressure relief valve is a safety valve used to control the pressure of a fluid system. Its function is to release excessive fluid or gas when the system pressure exceeds the set pressure, so as to prevent the system from being damaged or having an accident due to excessive pressure. A pressure relief valve usually consists of an adjustable elastic part and a valve core. When the internal pressure of the system exceeds the set value, the elastic part will be compressed, causing the valve core to open, and then allowing excessive fluid or gas to be released to the outside of the system through the pressure relief valve, thereby reducing the system pressure.

[0003] Currently, when users adjust the pressure threshold of the pressure relief valve, generally, after installing the pressure relief valve in the pipeline, they need to control the air pressure in the pipeline and set the pressure threshold by observing the conduction state of the pipeline. This method requires users to introduce air pressure into the pipeline, which is not only troublesome but also has a certain degree of danger. Utility Model Content

[0004] This application aims to provide a safety pressure relief valve for boiler pipelines to solve the problem that air pressure must be introduced into the pipeline when adjusting the pressure threshold of the pressure relief valve.

[0005] To solve the above technical problems, this application is implemented as follows:

[0006] An embodiment of this application provides a safety pressure relief valve for boiler pipelines, including: a three-way pipe body and a pressure adjustment component;

[0007] The three-way pipe body includes an air inlet, an air outlet, and a pressure adjustment port;

[0008] The pressure adjustment component is connected to the pressure adjustment port. The air outlet end of the pressure adjustment component communicates with the air outlet at the side wall position of the air outlet, and the air inlet end of the pressure adjustment component communicates with the air inlet at the side wall position of the air inlet;

[0009] The pressure adjustment component includes a pressure relief pipe, a pressure conduction part, and an adjustment part;

[0010] One end of the pressure relief pipe is communicated with the pressure adjustment port, and the other end of the pressure relief pipe is installed with the adjustment part; a perspective part is installed on the side wall of the pressure relief pipe, and a pressure threshold scale is set on the perspective part;

[0011] The pressure conduction part is installed in the pressure relief pipe, and the moving stroke range of the first end of the pressure conduction part is at least within the perspective range of the perspective part;

[0012] The adjusting member is connected to the first end of the pressure conducting member, and is used to adjust the stroke of the pressure conducting member to control the pressure threshold of the pressure conducting member.

[0013] Optionally, the pressure conducting member includes: a first baffle, a second baffle, and a first elastic member;

[0014] The first elastic member is disposed between the first baffle and the second baffle, and the telescopic direction of the first elastic member is the axial direction of the air discharge pipe;

[0015] The first baffle is close to the pressure adjustment port, the second baffle is far from the pressure adjustment port and is movably connected to the adjusting member; the air outlet end is located at one end of the side wall of the air discharge pipe close to the first baffle.

[0016] Optionally, the pressure adjustment assembly further includes:

[0017] A mounting member, the mounting member is connected to one end of the air discharge pipe close to the pressure adjustment port; the mounting member is fixedly connected to the side wall of the three-way pipe body where the pressure adjustment port is located.

[0018] Optionally, the pressure adjustment assembly further includes:

[0019] A handle, the handle is disposed at one end of the side wall of the air discharge pipe far from the pressure adjustment port.

[0020] Optionally, the pressure adjustment assembly further includes: an air outlet pipe;

[0021] One end of the air outlet pipe is connected to the air outlet end on the air discharge pipe, and the other end of the air outlet pipe is connected to the side wall of the air outlet port and communicates with the channel inside the air outlet port.

[0022] Optionally, the boiler pipeline safety relief valve further includes: an air inlet pipe;

[0023] A first through hole is provided at one end of the side wall of the three-way pipe body close to the pressure adjustment port;

[0024] One end of the air inlet pipe is communicated with the first through hole, the other end of the air inlet pipe is connected to the side wall of the air inlet port and communicates with the channel inside the air inlet port, and the air flow flowing out of the first through hole generates pressure on the first baffle.

[0025] Optionally, a retaining frame is slidably disposed on the inner wall of the three-way pipe body, and the retaining frame divides the inner part of the three-way pipe body into a second balance chamber, a first balance chamber, and the air outlet port;

[0026] The second balance chamber is located within the pressure regulating port, the first balance chamber is located within the air inlet pipe port, and the second balance chamber and the first balance chamber are connected through the air inlet pipe.

[0027] Optionally, the boiler pipeline safety relief valve further includes a third baffle, a control rod, and a second elastic member;

[0028] The control rod is disposed on the inner wall opposite to the pressure regulating air port, passes through the retaining frame, and is connected to the third baffle at the top end. The control rod is slidably inserted into the retaining frame, and the retaining frame can slide relative to the control rod;

[0029] The diameter of the third baffle is smaller than the inner diameter of the pressure regulating port, such that gas passes through the periphery of the third baffle;

[0030] One end of the second elastic member is connected to the third baffle, and the other end is connected to the retaining frame. The telescopic direction of the second elastic member is the axial direction of the control rod.

[0031] Optionally, the perspective member includes a notch, a high-pressure resistant glass, a limiting member, and an identification groove. The notch is located on the surface of the air discharge pipe, the high-pressure resistant glass is inserted into the notch, there is an identification groove for indicating the pressure threshold on the high-pressure resistant glass, and the limiting member is used to limit the position of the high-pressure resistant glass to the inner wall of the notch.

[0032] Optionally, the surface of the second baffle is provided with a protrusion. When the second baffle slides on the inner wall of the air discharge pipe, the protrusion slides within the perspective range of the perspective member, pointing to the pressure threshold scale on the perspective member.

[0033] In the embodiments of the present application, after connecting the three-way pipe body inside the boiler pipeline, the air pressure can enter the pressure regulating port through the air inlet pipe port. The pressure regulating port is connected to the pressure regulating component. When the air pressure exceeds the preset pressure threshold, the air pressure can push open the pressure conduction member between the pressure regulating component and the pressure regulating port, such that the gas is discharged into the air outlet pipe through the air outlet pipe at the bottom of the air discharge pipe, and discharged from the boiler pipeline, thereby realizing the air release operation for excessive air pressure. When it is necessary to adjust the air release threshold, the first end of the pressure conduction member can be controlled to slide on the inner wall of the air discharge pipe through the adjusting member, and the pressure threshold can be adjusted by observing the pointing of the first end of the pressure conduction member on the surface of the perspective member, so that it is not necessary to introduce gas inside the three-way pipe body, which is not only convenient but also not dangerous.

[0034] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present application. Description of the Drawings

[0035] The above and / or additional aspects and advantages of the present application will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, where:

[0036] Figure 1 is a schematic diagram of a safety pressure relief valve for a boiler pipeline according to an embodiment of the present application;

[0037] Figure 2 is a schematic diagram of a safety pressure relief valve for a boiler pipeline according to an embodiment of the present application;

[0038] Figure 3 is a top view of a safety pressure relief valve for a boiler pipeline according to an embodiment of the present application;

[0039] Figure 4 is along Figure 3 a cross-sectional view taken along line A - A in

[0040] Figure 5 is along Figure 3 a cross-sectional view taken along line B - B in

[0041] Figure 6 is an enlarged view of a pressure regulating assembly according to an embodiment of the present application.

[0042] Reference numerals: 100: tee pipe body; 110: intake pipe port: 111: first balance chamber; 120: outlet pipe port; 130: pressure regulating port; 131: second balance chamber; 140: intake pipe; 150: retaining frame; 160: third baffle; 170: control rod; 180: second elastic member; 200: pressure regulating assembly; 210: relief pipe; 211: viewing member; 2111: notch; 2112: high-pressure resistant glass; 2113: limiting member; 2114: identification groove; 220: pressure conducting member; 221: first baffle; 222: second baffle; 223: first elastic member; 230: adjusting member; 240: mounting member; 250: handle; 260: outlet pipe. Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of the present utility model.

[0044] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present utility model. Therefore, the "in one embodiment" or "in an embodiment" that appears throughout the specification does not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner.

[0045] Referring to Figure 1 and Figure 2 , a schematic diagram of a boiler pipeline safety relief valve in an embodiment of the present utility model is shown; referring to Figure 3 , a top view of the boiler pipeline safety relief valve described in an embodiment of the present utility model is shown; referring to Figure 4 and Figure 5 , a schematic cross-sectional structure diagram of the boiler pipeline safety relief valve described in an embodiment of the present utility model is shown; referring to Figure 6 , a schematic cross-sectional structure diagram of the pressure regulating assembly described in an embodiment of the present utility model is shown.

[0046] As Figure 1 and Figure 2 shown, an embodiment of the present utility model provides a boiler pipeline safety relief valve, including: a three-way pipe body 100, a pressure regulating assembly 200; the three-way pipe body 100 includes an air inlet port 110, an air outlet port 120 and a pressure regulating port 130; the pressure regulating assembly 200 is connected to the pressure regulating port 130, the air outlet end of the pressure regulating assembly 200 communicates with the air outlet port 120 at the side wall position of the air outlet port 120, and the air inlet end of the pressure regulating assembly 200 communicates with the air inlet port 110 at the side wall position of the air inlet port 110; the pressure regulating assembly 200 includes a relief pipe 210, a pressure conducting member 220 and an adjusting member 230; one end of the relief pipe 210 communicates with the pressure regulating port 130, and the other end of the relief pipe 210 is installed with the adjusting member 230; a perspective member 211 is installed on the side wall of the relief pipe 210, and a pressure threshold scale is set on the perspective member 211; the pressure conducting member 220 is installed in the relief pipe 210, and the moving stroke range of the first end of the pressure conducting member 220 is at least located within the perspective range of the perspective member 211; the adjusting member 230 is connected to the first end of the pressure conducting member 220 for adjusting the stroke of the pressure conducting member 220 to control the pressure threshold of the pressure conducting member 220.

[0047] A pressure relief valve is a safety valve used to control the pressure of a fluid system. Its function is to release excessive fluid or gas when the system pressure exceeds the set pressure, so as to prevent the system from being damaged or having accidents due to excessive pressure. A pressure relief valve usually consists of an adjustable spring and a valve core. When the internal pressure of the system exceeds the set value, the spring will be compressed, causing the valve core to open, and then allowing excessive fluid or gas to be released to the outside of the system through the pressure relief valve, thereby reducing the system pressure. For currently common pressure relief valves, the pressure threshold cannot be directly obtained and needs to be indirectly obtained through the magnitude of the air pressure in the pipeline. When adjusting the pressure threshold, gas usually needs to be introduced into the pipeline to control the magnitude of the air pressure in the pipeline, and the pressure threshold is set by observing the conduction state of the pipeline. This is not only troublesome but also has certain risks.

[0048] As Figure 1 - Figure 3 shown, the boiler pipeline safety pressure relief valve described in the embodiment of the present invention includes a tee pipe body 100 and a pressure adjustment component 200. The three pipe orifices of the tee pipe body are an air inlet pipe orifice 110, an air outlet pipe orifice 120, and a pressure adjustment orifice 130 respectively. The air inlet pipe orifice 110 is communicated with the boiler pipeline, and the gas in the boiler enters the tee pipe body 100 through the air inlet pipe orifice 110; the air outlet pipe orifice 120 is communicated with the outside, and the gas entering the tee pipe body 100 is discharged through the air outlet pipe orifice 120, playing a role in pressure relief. The air outlet pipe orifice 120 is not directly communicated with the air inlet pipe orifice 110, but is indirectly communicated with the other two pipe orifices of the tee pipe body 100 through the pressure adjustment component 200.

[0049] The pressure adjustment component 200 includes a pressure relief pipe 210, a pressure conduction member 220, and an adjustment member 230. The lower end of the pressure relief pipe 210 is connected to the pressure adjustment orifice 130 through the pressure conduction member 220, and the upper end is provided with an adjustment member 230 for adjusting the pressure threshold; the lower end of the pressure conductor is stuck at the connection channel between the pressure relief pipe 210 and the pressure adjustment orifice 130 to control the opening and closing of the exhaust channel; the upper end is connected to the adjustment member 230 and can move inside the inner wall of the pressure relief pipe 210; by controlling the adjustment member 230, the upper end of the pressure conduction member 220 slides inside the inner wall of the pressure relief pipe 210 to change the pressure threshold of the pressure conduction member 220. When the pressure of the gas entering the tee pipe body 100 from the air inlet pipe orifice 110 acting on the pressure conduction member 220 is less than the set pressure threshold, the channel between the pressure adjustment component 200 and the pressure adjustment orifice 130 is closed, and the gas cannot be discharged. When the pressure borne by the pressure conduction member 220 is greater than the pressure threshold, the channel is opened, the gas enters the pressure adjustment component 200, and then enters the air outlet pipe orifice 120 through the pressure adjustment component 200, and then discharges from the boiler pipeline, reducing the gas pressure in the pipeline.

[0050] It should be noted that in the embodiments of the present utility model, there are no excessive restrictions on the internal structure of the three-way pipe body 100. As long as the air inlet port 110 and the air outlet port 120 are not directly connected, when the air pressure reaches the threshold value, the air pressure in the three-way pipe body 100 enters the air outlet port 120 and is discharged from the boiler system, which all fall within the protection scope of the present utility model.

[0051] As Figure 1 - Figure 3 shown, the pressure regulating assembly 200 in the embodiments of the present utility model further includes a viewing member 211. The viewing member 211 is provided on the side wall of the air release pipe 210. Through the viewing member 211, the position of the first end of the pressure conducting member 220 in the air release pipe 210 can be observed. The viewing member 211 is marked with pressure threshold scales, and the position where the first end of the pressure conducting member 220 is located corresponds to the pressure threshold value that can be borne. By observing the pressure threshold scale on the viewing member 211 aligned with the first end of the pressure conducting member 220 in the air release pipe 210, the pressure threshold value of the safety pressure relief valve of the boiler pipeline at this time can be clearly understood.

[0052] The embodiments of the present utility model provide a safety pressure relief valve for a boiler pipeline, including: a three-way pipe body 100 and a pressure regulating assembly 200; the three-way pipe body 100 includes an air inlet port 110, an air outlet port 120, and a pressure regulating port 130; the pressure regulating assembly 200 is connected to the pressure regulating port 130. The air outlet end of the pressure regulating assembly 200 communicates with the air outlet port 120 at the side wall position of the air outlet port 120, and the air inlet end of the pressure regulating assembly 200 communicates with the air inlet port 110 at the side wall position of the air inlet port 110; the pressure regulating assembly 200 includes an air release pipe 210, a pressure conducting member 220, and an adjusting member 230; one end of the air release pipe 210 communicates with the pressure regulating port 130, and the other end of the air release pipe 210 is installed with the adjusting member 230; a viewing member 211 is installed on the side wall of the air release pipe 210, and the viewing member 211 is provided with pressure threshold scales; the pressure conducting member 220 is installed in the air release pipe 210, and the moving stroke range of the first end of the pressure conducting member 220 is at least within the viewing range of the viewing member 211; the adjusting member 230 is connected to the first end of the pressure conducting member 220 and is used to adjust the stroke of the pressure conducting member 220 to control the pressure threshold value of the pressure conducting member 220. When it is necessary to adjust the air release threshold value, the first end of the pressure conducting member 220 can be controlled to slide on the inner wall of the air release pipe 210 through the adjusting member 230, and the pressure threshold value can be adjusted by observing the direction of the first end of the pressure conducting member 220 on the surface of the viewing member 211. Thus, it is not necessary to introduce gas into the interior of the three-way pipe body 100, which is not only convenient but also not dangerous.

[0053] In addition, in some alternative embodiments, such as Figure 4 and Figure 5As shown, the pressure conduction member 220 includes: a first baffle 221, a second baffle 222, and a first elastic member 223; the first elastic member 223 is disposed between the first baffle 221 and the second baffle 222, and the telescopic direction of the first elastic member 223 is the axial direction of the air release pipe 210; the first baffle 221 is close to the pressure adjustment port 130, the second baffle 222 is far from the pressure adjustment port 130 and is movably connected to the adjustment member 230; the air outlet end is located at one end of the side wall of the air release pipe 210 close to the first baffle 221.

[0054] The first baffle 221 is movably pressed against the pressure adjustment port 130, and its size fits the inner wall of the air release pipe 210, ensuring that when the first baffle 221 is pressed above the pressure adjustment port 130, the gas in the three-way pipe body 100 will not enter the air release pipe 210 through the pressure adjustment port 130. The second baffle 222 can move up and down on the inner wall of the air release pipe 210, and the control member fixes the second baffle 222 at a certain position on the inner wall of the air release pipe 210. The first baffle 221 and the second baffle 222 are connected by the first elastic member 223, and the distance between the first baffle 221 and the second baffle 222 is less than the original length of the first elastic member 223, so that the first elastic member 223 is in a compressed state, and the elastic force generated by the compression acts on the first baffle 221 to overcome the pressure generated by the gas in the three-way pipe body 100 on the first baffle 221. When the gas pressure is greater than the elastic force of the first elastic member 223 acting on the first baffle 221, the first baffle 221 is pushed open, exposing the air outlet end at the bottom of the side wall of the air release pipe 210. The high-pressure gas enters the air release pipe 210 through the pressure adjustment port 130 and enters the air outlet port 120 through the air outlet end, thereby realizing the air release operation for excessive air pressure.

[0055] In addition, in some alternative embodiments, the pressure adjustment assembly 200 further includes: a mounting member 240, and the mounting member 240 is connected to one end of the air release pipe 210 close to the pressure adjustment port 130; the mounting member 240 is fixedly connected to the side wall of the three-way pipe body 100 where the pressure adjustment port 130 is located.

[0056] The mounting member 240 is used to fix the air release pipe 210 on the three-way pipe body. There are several mounting bolts, and a flange is fixedly sleeved on the surface of the air release pipe 210. During use, the user aligns the flange with the top of the three-way pipe body 100 for fitting, and then threads several mounting bolts into the surface of the flange and then into the surface of the three-way pipe body 100, thereby realizing the installation of the air release pipe 210. This embodiment only illustrates the connection method between the air release pipe 210 and the three-way pipe body 100, and should not be construed as a limitation of the present invention.

[0057] In addition, in some alternative embodiments, the pressure adjustment assembly 200 further includes: a handle 250, and the handle 250 is disposed at one end of the side wall of the air release pipe 210 far from the pressure adjustment port 130.

[0058] Two handles 250 for moving the air release pipe 210 are fixedly installed on the surface of the air release pipe 210, which facilitates the user to install, disassemble or move the safety pressure relief valve of the boiler pipeline.

[0059] In addition, in some alternative embodiments, the pressure regulating assembly 200 further includes: an air outlet pipe 260; one end of the air outlet pipe 260 is connected to the air outlet end on the air release pipe 210, and the other end of the air outlet pipe 260 is connected to the side wall of the air outlet 120 and communicates with the channel in the air outlet 120.

[0060] In the embodiment of the present utility model, when the air pressure is too high, the air pressure will push open the pressure conducting member 220, so that the gas can rush into the air release pipe 210, and through the air outlet pipe 260 into the air outlet 120. The air outlet 120 communicates with the outside, and the gas is discharged from the boiler system, and the air pressure in the boiler pipeline decreases accordingly, so as to realize the air release of the high-pressure gas in the boiler system.

[0061] In addition, in some alternative embodiments, the tee pipe body 100 further includes: an air inlet pipe 140; a first through hole is provided at one end of the side wall of the tee pipe body 100 close to the pressure regulating port 130; one end of the air inlet pipe 140 communicates with the first through hole, and the other end of the air inlet pipe 140 is connected to the side wall of the air inlet 110 and communicates with the channel in the air inlet 110, and the air flow flowing out of the first through hole generates pressure on the first baffle 221.

[0062] In addition, in some alternative embodiments, as Figure 4 and Figure 5 shown, a retaining frame 150 is slidably arranged on the inner wall of the tee pipe body 100. The retaining frame 150 divides the interior of the tee pipe body 100 into a second balance chamber 131, a first balance chamber 111 and an air outlet 120; the second balance chamber 131 is located in the pressure regulating port 130, the first balance chamber 111 is located in the air inlet 110, and the second balance chamber 131 and the first balance chamber 111 are communicated through the air inlet pipe 140.

[0063] In the embodiment of the present utility model, the blocking frame 150 falls into the bottom of the three-way pipe body 100 under its own gravity and cooperates with the protruding part on the inner wall of the bottom of the three-way pipe body 100 to block the air outlet 120. A cavity communicating with the air inlet 110 is formed between the square blocking frame 150 and the arc-shaped pipe body, which is the first balance chamber 111. The cavity above the blocking frame 150 communicating with the pressure regulating port 130 is the second balance chamber 131. The blocking frame 150 divides the cavity in the three-way pipe body 100 into three non-communicating parts, namely the first balance chamber 111, the second balance chamber 131, and the air outlet 120. The first balance chamber 111 and the second balance chamber 131 are connected through the air inlet pipe 140. One end of the air inlet pipe 140 is connected to the side wall of the air inlet 110, and the other end is connected to the side wall of the pressure regulating port 130. When gas is introduced into the three-way pipe body 100, the gas will enter the inner wall of the second balance chamber 131 along the air inlet pipe 140. At this time, the gas pressures in the first balance chamber 111 and the second balance chamber 131 are the same, and the gas pressures on both sides of the blocking frame 150 are the same. Therefore, the position of the blocking frame 150 remains unchanged. In this state, the air outlet 120 is blocked by the blocking frame 150, and the gas entering through the air inlet 110 cannot enter the air outlet 120 and remains in the closed state.

[0064] In addition, in some alternative embodiments, the three-way pipe body 100 further includes a third baffle 160, a control rod 170, and a second elastic member 180. The control rod 170 is disposed on the inner wall opposite to the pressure regulating port 130, passes through the blocking frame 150, and is connected to the third baffle 160 at the top. The control rod 170 is slidably inserted into the blocking frame 150, and the blocking frame 150 can slide relative to the control rod 170. The diameter of the third baffle 160 is smaller than the inner diameter of the pressure regulating port 130, so that the gas passes around the third baffle 160. One end of the second elastic member 180 is connected to the third baffle 160, and the other end is connected to the blocking frame 150. The telescopic direction of the second elastic member 180 is the axial direction of the control rod 170.

[0065] As Figure 4 and Figure 5 shown, in the embodiment of the present utility model, a control rod 170 is fixedly installed on the inner wall of the three-way pipe body 100, and a third baffle 160 is disposed at the other end of the control rod 170. Both ends of the second elastic member 180 are respectively connected to the third baffle 160 and the inner wall of the blocking frame 150. The surface of the control rod 170 is slidably inserted into the blocking frame 150, and the blocking frame 150 can slide up and down relative to the control rod 170. When the blocking frame 150 falls into the bottom of the three-way pipe body 100, the length of the second elastic member 180 is still shorter than the original length and is in a compressed state. The compressed second elastic member 180 exerts an elastic force on the blocking frame 150 towards the bottom of the three-way pipe body 100, pressing the three-way pipe body 100 in this position. Correspondingly, the air outlet 120 also remains in the blocked and closed state.

[0066] When the air pressure in the boiler pipeline suddenly increases within a short period of time, a large amount of high-pressure gas instantly surges into the first balance chamber 111 through the air inlet 110. The pressure in the first balance chamber 111 rapidly increases, creating a short-term pressure difference between the first balance chamber 111 and the second balance chamber 131. The forces on both sides of the baffle 150 are unbalanced, and it is subjected to an upward pressure provided by the gas in the first balance chamber 111. When the pressure difference between the two sides exceeds the gravity of the baffle 150 itself and the elastic force of the second elastic member 180, the baffle 150 is pushed open upward, the air outlet 120 is opened, and the high-pressure gas in the first balance chamber 111 enters the air outlet 120 and is discharged from the boiler pipeline. It is used for rapid auxiliary air release when the air pressure in the boiler pipeline surges instantaneously.

[0067] In addition, in some alternative embodiments, such as Figure 6 As shown, the perspective member 211 includes a notch 2111, a high-pressure resistant glass 2112, a limiting member 2113, and an identification groove 2114. The notch 2111 is located on the surface of the air discharge pipe 210. The high-pressure resistant glass 2112 is inserted into the notch 2111. There is an identification groove 2114 on the high-pressure resistant glass 2112 for indicating the pressure threshold. The limiting member 2113 is used to limit the position of the high-pressure resistant glass 2112 to the inner wall of the notch 2111.

[0068] In the embodiment of the present utility model, the perspective member 211 includes a notch 2111, a high-pressure resistant glass 2112, a limiting member 2113, and an identification groove 2114. The high-pressure resistant glass can resist the pressure exerted by the high-pressure gas in the boiler pipeline on the perspective member 211. The notch opened on the surface of the air discharge pipe 210 can be designed to have a shape where the external opening is slightly smaller than the internal opening. The shape of the high-pressure resistant glass fits the shape of the notch. The design with the outer part larger and the inner part smaller can prevent the high-pressure resistant glass from being ejected from the notch under the impact of the high-pressure gas in the air discharge pipe 210.

[0069] Taking the following limiting member as an example to illustrate the structure and function of the limiting member. The limiting member includes a limiting ring fixedly sleeved on the surface of the high-temperature resistant glass. A limiting groove is opened on the inner wall of the notch, and the limiting ring is slidably inserted into the inner wall of the limiting groove, thereby realizing the limitation of the high-pressure resistant glass on the inner wall of the notch. This embodiment is only for facilitating the understanding of the technical solution provided by the present utility model and should not be construed as a limitation of the present utility model.

[0070] In addition, in some alternative embodiments, protrusions are provided on the surface of the second baffle 222. When the second baffle 222 slides on the inner wall of the air discharge pipe 210, the protrusions slide within the perspective range of the perspective member 211, pointing to the pressure threshold scale on the perspective member 211.

[0071] In an embodiment of the present utility model, the surface of the second baffle 222 is provided with a protrusion. When the second baffle 222 slides on the inner wall of the air release pipe 210, the protrusion slides within the perspective range of the perspective member 211, thereby assisting the user in judging the pointing of the baffle to the pressure threshold scale.

[0072] The present utility model provides a safety pressure relief valve for a boiler pipeline, including: a tee pipe body and a pressure regulating component; the tee pipe body includes an air inlet, an air outlet, and a pressure regulating port; the pressure regulating component includes an air release pipe, a pressure conducting member, and an adjusting member; a perspective member is installed on the side wall of the air release pipe, and a pressure threshold scale is provided on the perspective member; the pressure conducting member is installed in the air release pipe, and the moving stroke range of the first end of the pressure conducting member is at least within the perspective range of the perspective member; the adjusting member is connected to the first end of the pressure conducting member for adjusting the stroke of the pressure conducting member to control the pressure threshold of the pressure conducting member. When it is necessary to adjust the air release threshold, the user can adjust the pressure threshold by observing the pointing of the first end of the pressure conducting member on the surface of the perspective member, so that it is not necessary to introduce gas into the interior of the tee pipe body, which is not only convenient but also not dangerous.

[0073] It should be noted that the embodiments in this specification are all described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0074] Although the optional embodiments of the embodiments of the present utility model have been described, those skilled in the art can make additional changes and modifications once they know the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the optional embodiments and all changes and modifications falling within the scope of the embodiments of the present utility model.

[0075] Finally, it should also be noted that in this article, relational terms such as first and second are only used to distinguish one entity from another, and do not necessarily require or imply any actual relationship or order between these entities. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that an article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such article or terminal device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of another identical element in the article or terminal device including the element.

[0076] The above has introduced in detail the technical solution provided by the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. At the same time, for those of ordinary skill in the art, according to the principle and implementation manner of the present utility model, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present utility model.

Claims

1. A boiler pipeline safety pressure relief valve, characterized in that: include: A three-way pipe body (100) and a pressure regulating assembly (200); The three-way pipe body (100) comprises an air inlet (110), an air outlet (120) and a pressure regulating port (130); The pressure regulating component (200) is connected to the pressure regulating port (130); the air outlet end of the pressure regulating component (200) is in communication with the air outlet port (120) at a side wall of the air outlet port (120); and the air inlet end of the pressure regulating component (200) is in communication with the air inlet port (110) at a side wall of the air inlet port (110); The pressure regulating assembly (200) comprises an air release pipe (210), a pressure transmission component (220) and a regulating component (230); One end of the air release pipe (210) is in communication with the pressure regulating port (130), and the regulating member (230) is installed at the other end of the air release pipe (210); a perspective member (211) is installed on the side wall of the air release pipe (210), and a pressure threshold scale is provided on the perspective member (211); The pressure transmission component (220) is installed in the air release pipe (210), and the moving stroke range of the first end of the pressure transmission component (220) is at least located within the perspective range of the perspective component (211); The adjusting member (230) is connected to the first end of the pressure transmitting member (220) and is used to adjust the stroke of the pressure transmitting member (220) so as to control the pressure threshold of the pressure transmitting member (220).

2. The boiler pipeline safety pressure relief valve according to claim 1, characterized in that: The pressure transmission member (220) comprises: a first baffle (221), a second baffle (222) and a first elastic member (223); The first elastic member (223) is arranged between the first baffle plate (221) and the second baffle plate (222), and the expansion and contraction direction of the first elastic member (223) is the axial direction of the air release pipe (210); The first baffle (221) is close to the pressure regulating port (130), and the second baffle (222) is far away from the pressure regulating port (130) and is movably connected to the regulating member (230); the air outlet end is located on the side wall of the air vent pipe (210) at one end close to the first baffle (221).

3. The boiler pipeline safety pressure relief valve according to claim 1, characterized in that: The pressure regulating assembly (200) further comprises: A mounting member (240) is connected to one end of the air release pipe (210) close to the pressure regulating port (130); the mounting member (240) is fixedly connected to the side wall of the pressure regulating port (130) on the three-way pipe body (100).

4. The boiler pipeline safety pressure relief valve according to claim 1, characterized in that: The pressure regulating assembly (200) further comprises: A handle (250) is provided on an end of the side wall of the air release pipe (210) away from the pressure regulating port (130).

5. The boiler pipeline safety pressure relief valve according to claim 1, characterized in that: The pressure regulating assembly (200) further includes: an air outlet pipe (260); One end of the air outlet pipe (260) is connected to the air outlet end on the air vent pipe (210), and the other end of the air outlet pipe (260) is connected to the side wall of the air outlet pipe opening (120) and communicates with the channel in the air outlet pipe opening (120).

6. The boiler pipeline safety pressure relief valve according to claim 2, characterized in that: Also includes: Intake pipe (140); A first through hole is provided at one end of the side wall of the three-way pipe body (100) close to the pressure regulating port (130); One end of the air intake pipe (140) is connected to the first through hole, and the other end of the air intake pipe (140) is connected to the side wall of the air intake pipe opening (110) and is connected to the channel in the air intake pipe opening (110), and the airflow flowing out of the first through hole generates pressure on the first baffle (221).

7. The boiler pipeline safety pressure relief valve according to claim 6, characterized in that: A retaining frame (150) is slidably disposed on the inner wall of the three-way tube body (100), and the retaining frame (150) divides the interior of the three-way tube body (100) into a first balancing chamber (111), a second balancing chamber (131) and the air outlet (120); The second balancing chamber (131) is located in the pressure regulating port (130), the first balancing chamber (111) is located in the air inlet port (110), and the second balancing chamber (131) and the first balancing chamber (111) are connected via the air inlet pipe (140).

8. The boiler pipeline safety pressure relief valve according to claim 7, characterized in that: It also includes a third baffle (160), a control rod (170) and a second elastic member (180); The control rod (170) is arranged on the inner wall opposite to the pressure regulating port, passes through the baffle frame (150), and is connected to the third baffle plate (160) at the top end. The control rod (170) is slidably plugged into the baffle frame (150), and the baffle frame (150) can slide relative to the control rod (170); The diameter of the third baffle (160) is smaller than the inner diameter of the pressure regulating port (130), so that the gas passes around the third baffle (160); One end of the second elastic member (180) is connected to the third baffle (160), and the other end is connected to the baffle frame (150); the telescopic direction of the second elastic member (180) is the axial direction of the control rod (170).

9. The boiler pipeline safety pressure relief valve according to claim 1, characterized in that: The perspective member (211) comprises a notch (2111), a high-pressure resistant glass (2112), a stopper (2113) and an identification groove (2114); the notch (2111) is located on the surface of the vent pipe (210); the high-pressure resistant glass (2112) is inserted into the notch (2111); the high-pressure resistant glass (2112) is provided with an identification groove (2114) for indicating a pressure threshold; and the stopper (2113) is used to limit the position of the high-pressure resistant glass (2112) to the inner wall of the notch (2111).

10. The boiler pipeline safety pressure relief valve according to claim 2, characterized in that: A protrusion is provided on the surface of the second baffle (222), and when the second baffle (222) slides on the inner wall of the air release pipe (210), the protrusion slides within the perspective range of the perspective piece (211) and points to the pressure threshold scale on the perspective piece (211).

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