Explosion-proof device for high-temperature gas pipeline

Abstract

The utility model discloses a high-temperature gas pipeline explosion-proof device which comprises a negative pressure explosion-proof mechanism and an installation cover installed on the end portion of the negative pressure explosion-proof mechanism, an explosion-proof centrifugal mechanism is arranged on one side of the negative pressure explosion-proof mechanism, centrifugal fan blades are arranged in the explosion-proof centrifugal mechanism, the negative pressure explosion-proof mechanism comprises an air pressure adjusting box, and the air pressure adjusting box is connected with the installation cover. An air pressure adjusting piston is slidably connected to the interior of the air pressure adjusting box, an adjusting sliding rod is fixedly installed in the center of the top of the air pressure adjusting piston, an adjusting limiting plate is fixedly connected to the top of the adjusting sliding rod, and automatic adjustment of the internal pressure intensity of the air pressure adjusting box can be achieved through automatic lifting of the air pressure adjusting piston; the negative pressure control technology is utilized, the gas pressure in a sewage station shed is dynamically adjusted, gas overflow is restrained to the maximum extent, methane and other gas in a sewage station are conveyed to an incinerator to participate in combustion supporting, and the environmental benefits and the resource level of an incineration plant are improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline explosion protection technology, specifically a high-temperature gas pipeline explosion protection device. Background Technology

[0002] Wastewater treatment plants generate gases such as methane and volatile organic compounds during operation. These gases are not only highly corrosive, easily causing electrochemical corrosion and stress corrosion cracking on the surface of metal equipment, but their high volatility also allows them to diffuse into the surrounding environment, creating persistent odor pollution. Under long-term corrosive conditions, the protective coatings on traditional carbon steel pipes and general-purpose fan impellers are prone to peeling off, accelerating the deterioration of the metal substrate and causing structural damage and airtightness failure of the equipment. This forces a significant increase in the frequency of shutdowns for maintenance, resulting in high operation and maintenance costs. In addition, the problem of the accumulation of combustible gas and the mismatch between the explosion-proof rating of the equipment is particularly prominent.

[0003] Publication number CN213271174U discloses an explosion-proof pipe. By combining an extrusion plate, a first sealing ring, a fixed ring, and a second sealing ring, the sealing performance between the extrusion plate and the fixed ring can be greatly improved. Furthermore, since both the first and second sealing rings are located within the annular groove on the fixed ring under normal conditions, their contact with the liquid inside the pipe is minimized, preventing corrosion and extending their service life. However, this patent still has the following problems in practical use:

[0004] Although the explosion-proof pipeline can greatly improve the sealing performance between the extrusion plate and the fixed ring through the combined use of the extrusion plate, the first sealing ring, the fixed ring and the second sealing ring, gases such as methane and volatile organic compounds are not only highly corrosive and easily cause electrochemical corrosion and stress corrosion cracking on the surface of metal equipment, but their high volatility can also penetrate into the surrounding environment through molecular diffusion, forming persistent malodorous pollution. At the same time, under long-term corrosive environment, the protective coating on the surface of traditional carbon steel pipelines and general-purpose fan impellers is prone to peeling off, the metal substrate deteriorates more rapidly, causing structural damage and airtightness failure of the equipment, thus affecting the service life of the equipment.

[0005] Therefore, an explosion-proof device for high-temperature gas pipelines is proposed to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide an explosion-proof device for high-temperature gas pipelines, in order to solve the problems mentioned in the background art, such as the fact that gases such as methane and volatile organic compounds are not only highly corrosive and easily cause electrochemical corrosion and stress corrosion cracking on the surface of metal equipment, but their high volatility also allows them to penetrate into the surrounding environment through molecular diffusion, forming persistent malodor pollution. At the same time, under long-term corrosive environments, the protective coating on the surface of traditional carbon steel pipelines and general-purpose fan impellers is prone to peeling off, the metal substrate deteriorates rapidly, causing structural damage and airtightness failure of the equipment, thereby affecting the service life of the equipment.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature gas pipeline explosion-proof device, including a negative pressure explosion-proof mechanism and a mounting cover installed at the end of the negative pressure explosion-proof mechanism;

[0008] An explosion-proof centrifugal mechanism is provided on one side of the negative pressure explosion-proof mechanism, and a centrifugal fan is provided inside the explosion-proof centrifugal mechanism.

[0009] Also includes:

[0010] The negative pressure explosion-proof mechanism includes a pressure regulating box, and a pressure regulating piston is slidably connected inside the pressure regulating box. An adjusting sliding rod is fixedly installed at the top center position of the pressure regulating piston.

[0011] An adjusting limit plate is fixedly connected to the top of the adjusting sliding rod, and an adjusting spring is fixedly installed on the adjusting limit plate near the outer side of the adjusting sliding rod.

[0012] The adjusting spring is fixedly installed on the top of the air pressure regulating box, and the adjusting sliding rod is slidably connected to the air pressure regulating box.

[0013] Preferably, the pressure regulating box has through holes on both sides of its bottom. A first glass duct is fixedly installed on the outside of one of the through holes. The mounting cover is fixedly installed on the end of the first glass duct. A variable threaded tube is fixedly installed inside the mounting cover.

[0014] Preferably, the outer thread of the variable threaded tube is threaded with a mounting threaded sleeve, the end of the mounting threaded sleeve is fixedly mounted with a sealing ring, and the inner thread of the mounting cover is threaded with a plurality of clamping bolts, the end of the clamping bolts being fixedly mounted with a clamping knob.

[0015] Preferably, a clamping plate is rotatably connected to the end of the clamping bolt away from the clamping knob, and the clamping plate is in contact with the outer surface of the threaded sleeve.

[0016] Preferably, the explosion-proof centrifugal mechanism includes an explosion-proof centrifugal box, with second glass ducts fixedly installed on both sides of the explosion-proof centrifugal box. One side of the second glass duct is fixedly connected to a pressure regulating box. A dustproof sleeve is fixedly installed at the center of the interior of the explosion-proof centrifugal box, and the dustproof sleeve is in close contact with the centrifugal fan blades.

[0017] Preferably, a worm gear protective cover is fixedly installed on the top of the explosion-proof centrifuge, and a rotating bracket is symmetrically installed on the inner side of the explosion-proof centrifuge near the worm gear protective cover. A rotating motor is fixedly installed on the outer side of the rotating bracket, and a rotating worm is fixedly connected to the output end of the rotating motor.

[0018] Preferably, a rotating worm gear is meshed with one side of the rotating worm, the rotating worm gear is rotatably connected to the explosion-proof centrifuge, a connecting shaft is fixedly installed inside the rotating worm gear, a top fan plate is fixedly installed at the bottom of the connecting shaft, the centrifugal fan blade is fixedly installed at the bottom of the top fan plate, a bottom fan plate is fixedly installed at the bottom of the centrifugal fan blade, and both the bottom fan plate and the top fan plate are rotatably connected to the explosion-proof centrifuge.

[0019] Compared with existing technologies, the beneficial effects of this utility model are as follows: This high-temperature gas pipeline explosion-proof device can automatically adjust the internal pressure of the gas pressure regulating box through the automatic lifting and lowering of the gas pressure regulating piston. Utilizing negative pressure control technology, it dynamically adjusts the gas pressure inside the sewage treatment plant shed, minimizing gas leakage and transporting gases such as methane from the sewage treatment plant to the incinerator for combustion support, thereby improving the environmental benefits and resource utilization level of the incineration plant. It uses a second glass duct to replace the traditional metal pipe and adopts an overhead arrangement, optimizing the pipe diameter and layout design to ensure maximum gas transport efficiency. The specific details are as follows:

[0020] 1. By setting up a negative pressure explosion-proof mechanism, the sliding connection between the pressure regulating piston and the pressure regulating box can be utilized. When the internal pressure of the pressure regulating box increases, the pressure regulating piston rises; when the internal pressure of the pressure regulating box decreases, the pressure regulating piston falls. Through the automatic rising and falling of the pressure regulating piston, the internal pressure of the pressure regulating box can be automatically adjusted. Using negative pressure control technology, the gas pressure inside the sewage treatment plant can be dynamically adjusted to minimize gas leakage. Gases such as methane in the sewage treatment plant can be transported to the incinerator to participate in combustion, improving the environmental benefits and resource utilization level of the incineration plant. By installing the threaded sleeve and the threaded connection of the variable threaded pipe, the connection of the first glass duct can be realized. The clamping knob can be used to drive the clamping bolt and clamping plate to move, thereby fixing the threaded sleeve and improving the stability of the first glass duct connection.

[0021] 2. By setting up an explosion-proof centrifugal mechanism, not only can a second glass duct replace the traditional metal pipe, but also an overhead arrangement can be adopted. The pipe diameter and layout design are optimized to ensure maximum gas delivery efficiency. At the same time, the rotating motor drives the rotating worm gear to rotate. Utilizing the meshing connection between the rotating worm gear and the rotating worm wheel, the rotating worm wheel drives the connecting shaft to rotate. The connecting shaft then drives the top fan disc, centrifugal fan blades, and bottom fan disc to rotate. The use of explosion-proof centrifugal fans prevents the risk of combustion and explosion caused by static electricity or mechanical friction during gas delivery, thereby improving system safety. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0023] Figure 2 This is a three-dimensional cross-sectional structural diagram of the negative pressure explosion-proof mechanism in this utility model;

[0024] Figure 3 This is a three-dimensional structural diagram of the mounting cover in this utility model.

[0025] Figure 4 This is a three-dimensional cross-sectional structural diagram of the explosion-proof centrifugal mechanism in this utility model;

[0026] Figure 5 This is a three-dimensional structural diagram of the rotating worm gear and connecting shaft in this utility model;

[0027] Figure 6 This is a three-dimensional structural diagram of the centrifugal fan blade in this utility model.

[0028] In the diagram: 1. Negative pressure explosion-proof mechanism; 101. Air pressure regulating box; 102. Air pressure regulating piston; 103. Adjusting sliding rod; 104. Adjusting limit plate; 105. Adjusting spring; 106. Through hole; 107. First glass duct; 108. Mounting cover; 109. Variable threaded pipe; 110. Mounting threaded sleeve; 111. Sealing ring; 112. Tightening bolt; 113. Tightening knob; 114. Tightening plate; 2. Explosion-proof centrifugal mechanism; 201. Explosion-proof centrifuge box; 202. Second glass duct; 203. Dustproof sleeve; 204. Worm gear protective cover; 205. Rotating bracket; 206. Rotating motor; 207. Rotating worm; 208. Rotating worm wheel; 209. Connecting shaft; 210. Top fan plate; 211. Centrifugal fan blade; 212. Bottom fan plate. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-6This utility model provides a technical solution: a high-temperature gas pipeline explosion-proof device, including a negative pressure explosion-proof mechanism 1 and a mounting cover 108 installed at the end of the negative pressure explosion-proof mechanism 1. An explosion-proof centrifugal mechanism 2 is provided on one side of the negative pressure explosion-proof mechanism 1, and a centrifugal fan 211 is provided inside the explosion-proof centrifugal mechanism 2. The negative pressure explosion-proof mechanism 1 includes a pressure regulating box 101, and a pressure regulating piston 102 is slidably connected inside the pressure regulating box 101. An adjusting sliding rod 103 is fixedly installed at the top center of the pressure regulating piston 102, wherein an adjusting limiting plate 104 is fixedly connected to the top of the adjusting sliding rod 103. 04 An adjusting spring 105 is fixedly installed near the outer side of the adjusting sliding rod 103. The adjusting spring 105 is fixedly installed on the top of the air pressure regulating box 101. The adjusting sliding rod 103 is slidably connected to the air pressure regulating box 101. Through holes 106 are opened on both sides of the bottom of the air pressure regulating box 101. A first glass duct 107 is fixedly installed on the outer side of one through hole 106. A mounting cover 108 is fixedly installed on the end of the first glass duct 107. A variable threaded tube 109 is fixedly installed inside the mounting cover 108. A mounting threaded sleeve 110 is threadedly connected to the outer side of the variable threaded tube 109. The end of the mounting threaded sleeve 110 is fixed. A sealing ring 111 is installed, and several clamping bolts 112 are threadedly connected to the inside of the mounting cover 108. A clamping knob 113 is fixedly installed at the end of each clamping bolt 112. A clamping plate 114 is rotatably connected to the end of the clamping bolt 112 away from the clamping knob 113. The clamping plate 114 is in contact with the outer surface of the mounting threaded sleeve 110. Utilizing the sliding connection between the air pressure regulating piston 102 and the air pressure regulating box 101, when the internal pressure of the air pressure regulating box 101 increases, the air pressure regulating piston 102 rises; when the internal pressure of the air pressure regulating box 101 decreases, the air pressure regulating piston 102 falls. This is achieved through the air pressure regulating piston 112... The automatic lifting of 02 enables automatic adjustment of the internal pressure of the air pressure regulating box 101. Utilizing negative pressure control technology, it dynamically adjusts the gas pressure inside the sewage treatment plant shed, minimizing gas overflow and transporting gases such as methane from the sewage treatment plant to the incinerator for combustion support, thereby improving the environmental benefits and resource utilization level of the incineration plant. Through the threaded connection between the threaded sleeve 110 and the variable threaded pipe 109, the connection of the first glass duct 107 can be achieved. The clamping knob 113 drives the clamping bolt 112 and the clamping plate 114 to move, thereby fixing the threaded sleeve 110 and improving the stability of the connection of the first glass duct 107.

[0031] The explosion-proof centrifuge mechanism 2 includes an explosion-proof centrifuge chamber 201. Second glass ducts 202 are fixedly installed on both sides of the explosion-proof centrifuge chamber 201. One side of the second glass duct 202 is fixedly connected to a pressure regulating box 101. A dustproof sleeve 203 is fixedly installed at the center of the interior of the explosion-proof centrifuge chamber 201, and the dustproof sleeve 203 is in close contact with the centrifugal fan blades 211. A worm gear protective cover 204 is fixedly installed on the top of the explosion-proof centrifuge chamber 201. A rotating bracket 205 is symmetrically installed on the inner side of the explosion-proof centrifuge chamber 201 near the worm gear protective cover 204. A rotating motor 206 is fixedly installed on the outer side of the rotating bracket 205. A rotating worm 207 is fixedly connected to the output end of the rotating motor 206. A rotating worm wheel 208 is meshed with one side of the rotating worm 207 and is rotatably connected to the explosion-proof centrifuge chamber 201. A connecting shaft 209 is fixedly installed inside the rotating worm wheel 208. A top fan plate 210 is fixedly installed at the bottom, and a centrifugal fan blade 211 is fixedly installed at the bottom of the top fan plate 210. A bottom fan plate 212 is fixedly installed at the bottom of the centrifugal fan blade 211. Both the bottom fan plate 212 and the top fan plate 210 are rotatably connected to the explosion-proof centrifuge box 201. The second glass duct 202 replaces the traditional metal pipe and adopts an overhead arrangement. The pipe diameter and layout design are optimized to ensure maximum gas delivery efficiency. At the same time, the rotating motor 206 is started to drive the rotating worm gear 207 to rotate. Utilizing the meshing connection between the rotating worm gear 207 and the rotating worm wheel 208, the rotating worm wheel 208 drives the connecting shaft 209 to rotate, which in turn drives the top fan plate 210, the centrifugal fan blade 211, and the bottom fan plate 212 to rotate. The use of explosion-proof centrifugal fans prevents the risk of combustion and explosion caused by static electricity or mechanical friction during gas delivery, thereby improving system safety.

[0032] Working principle: Before using this type of high-temperature gas pipeline explosion-proof device, it is necessary to check the overall condition of the device to ensure that it can operate normally. Figure 1 - Figure 6As shown, firstly, utilizing the sliding connection between the pressure regulating piston 102 and the pressure regulating box 101, when the internal pressure of the pressure regulating box 101 increases, the pressure regulating piston 102 rises; when the internal pressure of the pressure regulating box 101 decreases, the pressure regulating piston 102 falls. Through the automatic rising and falling of the pressure regulating piston 102, the internal pressure of the pressure regulating box 101 can be automatically adjusted. Using negative pressure control technology, the gas pressure inside the sewage treatment plant is dynamically adjusted to minimize gas overflow, transporting gases such as methane from the sewage treatment plant to the incinerator for combustion, thus improving the environmental benefits and resource utilization level of the incineration plant. Through the threaded connection between the threaded sleeve 110 and the variable threaded pipe 109, the connection of the first glass duct 107 can be achieved, and the clamping knob 11... 3. The clamping bolts 112 and clamping plate 114 are moved to fix the threaded sleeve 110, thereby improving the stability of the first glass duct 107 connection. Secondly, the second glass duct 202 is used to replace the traditional metal pipe and an overhead arrangement is adopted. The pipe diameter and layout design are optimized to ensure maximum gas delivery efficiency. At the same time, the rotating motor 206 is started to drive the rotating worm 207 to rotate. Utilizing the meshing connection between the rotating worm 207 and the rotating worm wheel 208, the rotating worm wheel 208 drives the connecting shaft 209 to rotate. The connecting shaft 209 drives the top fan disc 210, centrifugal fan blade 211 and bottom fan disc 212 to rotate. Explosion-proof centrifugal fans are used to prevent the risk of combustion and explosion caused by static electricity or mechanical friction during gas delivery, thereby improving system safety.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-temperature gas pipeline explosion-proof device, comprising a negative pressure explosion-proof mechanism (1) and a mounting cover (108) installed at the end of the negative pressure explosion-proof mechanism (1). An explosion-proof centrifugal mechanism (2) is provided on one side of the negative pressure explosion-proof mechanism (1), and a centrifugal fan (211) is provided inside the explosion-proof centrifugal mechanism (2). Its features are, Also includes: The negative pressure explosion-proof mechanism (1) includes a pressure regulating box (101), and a pressure regulating piston (102) is slidably connected inside the pressure regulating box (101). An adjusting sliding rod (103) is fixedly installed at the top center of the pressure regulating piston (102). An adjustment limiting plate (104) is fixedly connected to the top of the adjustment sliding rod (103), and an adjustment spring (105) is fixedly installed on the outer side of the adjustment limiting plate (104) near the adjustment sliding rod (103). The adjusting spring (105) is fixedly installed on the top of the air pressure regulating box (101), and the adjusting sliding rod (103) is slidably connected to the air pressure regulating box (101).

2. The explosion-proof device for high-temperature gas pipelines according to claim 1, characterized in that: The pressure regulating box (101) has through holes (106) on both sides of its bottom. A first glass duct (107) is fixedly installed on the outside of one of the through holes (106). The mounting cover (108) is fixedly installed on the end of the first glass duct (107). A variable threaded pipe (109) is fixedly installed inside the mounting cover (108).

3. The explosion-proof device for high-temperature gas pipelines according to claim 2, characterized in that: The variable threaded tube (109) is threadedly connected to an installation threaded sleeve (110), and a sealing ring (111) is fixedly installed at the end of the installation threaded sleeve (110). The installation cover (108) is threadedly connected to a plurality of clamping bolts (112), and a clamping knob (113) is fixedly installed at the end of the clamping bolts (112).

4. The explosion-proof device for high-temperature gas pipelines according to claim 3, characterized in that: The end of the clamping bolt (112) away from the clamping knob (113) is rotatably connected to a clamping plate (114), and the clamping plate (114) is in contact with the outer surface of the mounting threaded sleeve (110).

5. The explosion-proof device for high-temperature gas pipelines according to claim 1, characterized in that: The explosion-proof centrifugal mechanism (2) includes an explosion-proof centrifugal box (201). A second glass duct (202) is fixedly installed on both sides of the explosion-proof centrifugal box (201). One side of the second glass duct (202) is fixedly connected to the air pressure regulating box (101). A dustproof sleeve (203) is fixedly installed at the center of the interior of the explosion-proof centrifugal box (201). The dustproof sleeve (203) is fitted and connected to the centrifugal fan blade (211).

6. The explosion-proof device for high-temperature gas pipelines according to claim 5, characterized in that: The explosion-proof centrifuge (201) is fixedly installed with a worm gear protective cover (204) on its top. The explosion-proof centrifuge (201) is symmetrically installed with a rotating bracket (205) on the inner side of the worm gear protective cover (204). A rotating motor (206) is fixedly installed on the outer side of the rotating bracket (205). A rotating worm (207) is fixedly connected to the output end of the rotating motor (206).

7. The explosion-proof device for high-temperature gas pipelines according to claim 6, characterized in that: A rotating worm gear (208) is meshed with one side of the rotating worm (207). The rotating worm gear (208) is rotatably connected to the explosion-proof centrifuge (201). A connecting shaft (209) is fixedly installed inside the rotating worm gear (208). A top fan disc (210) is fixedly installed at the bottom of the connecting shaft (209). The centrifugal fan blade (211) is fixedly installed at the bottom of the top fan disc (210). A bottom fan disc (212) is fixedly installed at the bottom of the centrifugal fan blade (211). Both the bottom fan disc (212) and the top fan disc (210) are rotatably connected to the explosion-proof centrifuge (201).

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