Chemical gas conveying pipe fitting

Abstract

The utility model discloses a chemical gas delivery pipe fitting, which belongs to the technical field of gas delivery pipes, and comprises a pipe main body, a pressure relief cylinder is connected onto the pipe main body, an alarm box is mounted on the cylinder, a pressure relief piece is mounted on one side of the pressure relief cylinder, the pressure relief cylinder comprises a cylinder main body, a sliding piston is arranged in the cylinder main body in a sliding manner, and an electric contact shaft is fixedly connected onto the sliding piston. A lithium battery block, a signal transmitting module and an electrical contact piece are installed in the alarm box. According to the technical scheme, when the pipe body conveys chemical gas and the gas pressure in the pipe is accidentally too large, the gas can push the sliding piston to move upwards, so that the electric contact shaft installed on the sliding piston is in electric contact with the electric contact piece in the sliding process, at the moment, the signal transmitting module is powered on to send an alarm signal, and the alarm effect is achieved; when the air pressure in the pipe is increased, the sliding piston is further pushed to move upwards, part of the air is discharged through the pressure relief piece, excessive increase of the air pressure in the pipe is avoided, and then the pipe body is prevented from bursting.

Description

Technical Field

[0001] The utility model relates to the technical field of gas delivery pipes, in particular to a chemical gas delivery pipe fitting. Background Art

[0002] Gas pipelines are pipes used to transport gases and are widely used in both industrial and civilian applications. They are widely used in the industrial sector, primarily to transport various raw materials and industrial gases, such as hydrogen and oxygen, to meet production needs. For example, in the steel industry, gases such as furnace charge, furnace gas, and compressed air from the top of blast furnaces all need to be transported through pipelines to the corresponding process steps. The petrochemical industry also requires gas transportation via pipelines.

[0003] The utility model with announcement number CN219809579U discloses an industrial gas recovery and transportation pipeline. The arrangement of connecting grooves and sealing gaskets on the pipeline body, combined with the use of connecting parts, can achieve a good sealing effect when the two pipeline bodies are connected, and make the two pipeline bodies more convenient and quick to disassemble and assemble compared to the conventional flange connection method, effectively improving the use effect of the industrial gas recovery and transportation pipeline and enhancing the practicality of the device.

[0004] When the above-mentioned pipe body is conveying chemical gas, if some chemical gas accidentally reacts and expands, or if the pipe is deformed and blocked, resulting in a reduction in the cross-sectional area of the pipe, the gas pressure in the pipe will increase significantly. If timely alarm and pressure relief are not carried out, the pipe is likely to burst, thereby causing the chemical gas to spread over a large area and causing serious consequences. Therefore, a chemical gas conveying pipe fitting is proposed to address the above-mentioned problems. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a chemical gas conveying pipe. When the gas conveying pipe is conveying chemical gas and the air pressure in the pipe is accidentally too high, the gas will push the sliding piston to move upward, so that the electrical contact shaft installed thereon will be in electrical contact with the electrical contact piece during the sliding process. At this time, the signal transmitting module is energized to send an alarm signal, which plays an alarm role. At the same time, if the air pressure continues to increase, it will further push the sliding piston to move upward. At this time, part of the gas will be discharged through the pressure relief piece to avoid excessive increase in the air pressure in the pipe, thereby preventing the pipe body from bursting. It solves the technical problem in the prior art that the pipeline for conveying chemical gas lacks timely alarm and pressure relief measures, and is likely to burst the pipeline, resulting in serious consequences.

[0006] The technical solution adopted by the embodiment of the present application to solve the technical problem is:

[0007] A chemical gas conveying pipe fitting comprises a pipe main body, to which a connecting branch is connected, a pressure relief cylinder is installed on the connecting branch, an alarm box is installed on the pressure relief cylinder and is used to send an alarm signal when the pipe pressure surges, and a pressure relief piece is installed on one side of the pressure relief cylinder, wherein the pressure relief cylinder comprises a cylinder main body, a sliding piston is slidably arranged in the cylinder main body, an electrical contact shaft is fixedly connected to the sliding piston, and the alarm box comprises a mounting base, on which a lithium battery block, a signal transmitting module and an electrical contact piece are installed in sequence, and the electrical contact shaft can electrically contact the electrical contact piece during the sliding process.

[0008] Through the above-mentioned structural form, when the tube body transports chemical gas and the air pressure in the tube is accidentally too high, the gas will push the sliding piston upward, so that the electrical contact shaft installed thereon will be in electrical contact with the electrical contact piece during the sliding process. At this time, the signal transmitting module is energized to send an alarm signal, which plays an alarm role. At the same time, if the air pressure continues to increase, it will further push the sliding piston upward. At this time, part of the gas will be discharged through the pressure relief piece to avoid excessive increase in the air pressure in the tube, thereby preventing the tube body from bursting.

[0009] In a possible implementation, the electrical contact includes an insulating seat fixedly mounted in the middle of the mounting substrate, two elastic conductive sheets are fixedly mounted on the insulating seat, and the ends of the elastic conductive sheets are electrically connected to contacts.

[0010] Through the above structure, when the electrical contact shaft moves up and contacts the contacts on both sides, the signal transmitting module will be powered on to send an alarm signal, and the elastic conductive sheet can rely on its own elasticity to ensure that the contact is always in contact with the electrical contact shaft.

[0011] In one possible implementation, the positive electrode of the lithium battery block is electrically connected to one of the elastic conductive sheets via a wire, the positive electrode of the signal transmitting module is electrically connected to the other elastic conductive sheet via a wire, and the negative electrode of the lithium battery block is electrically connected to the negative electrode of the signal transmitting module via a wire.

[0012] Through the above-mentioned structural form, the power supply circuit of the signal transmitting module can be formed, and the on-off of the circuit is controlled by the contact and separation of the electrical contact shaft and the contact, thereby realizing the control of the position change of the sliding piston by the change of the air pressure, and finally realizing the on-off of the power supply circuit of the signal transmitting module by controlling the air pressure, that is, when the air pressure increases, the signal transmitting module is powered on and works, and when the gas pressure decreases, the signal transmitting module is powered off and stops working.

[0013] In one possible implementation, a cross guide ring is fixedly provided on the upper part of the pressure relief cylinder, the top of the electrical contact shaft slides in the cross guide ring, and a reset spring is provided on the outer sleeve of the electrical contact shaft, and the two ends of the reset spring are in close contact with the cross guide ring and the sliding piston respectively.

[0014] Through the above-mentioned structural form, the cross guide ring can constrain the top of the electrical contact shaft to prevent the electrical contact shaft from deflecting during the up and down movement, and the return spring can push the sliding piston to reset when the air pressure drops, ensuring the overall airtightness of the pipeline.

[0015] In a possible implementation, the electrical contact shaft includes a slotted shaft, and mounting slots are provided in grooves on both sides of the slotted shaft, and U-shaped contacts are mounted in the mounting slots.

[0016] With the above-mentioned structural form, when the U-shaped contact piece contacts with the contacts on both sides, it can achieve electrical connection between the contacts, thereby connecting the power supply circuit of the signal transmission module.

[0017] In a possible implementation, the pressure relief component includes a pressure relief branch pipe connected to the interior of the cylinder body, the outer end of the pressure relief branch pipe is sealedly connected to a pressure relief outer pipe, and a plurality of pressure relief grooves are opened on the inner wall of the pressure relief outer pipe.

[0018] Through the above-mentioned structural form, when the air pressure is too high, the sliding piston will be continuously pushed upward until the interface of the pressure relief branch pipe is exposed. At this time, part of the gas will be discharged from the pressure relief outer pipe along the pressure relief branch pipe, thereby preventing the air pressure in the cylinder body from increasing excessively.

[0019] In a possible implementation, a ball valve is slidably provided in the pressure relief outer tube, a matching ring is fixedly provided at the mouth of the pressure relief branch pipe, a closing spring is fixedly provided on the matching ring, and the end of the closing spring contacts the ball valve.

[0020] Through the above-mentioned structural form, a simple one-way valve can be formed, that is, gas is only allowed to flow out of the pressure relief outer tube, and gas is not allowed to flow into the pressure relief outer tube. Specifically, when gas needs to be discharged, the ball valve will be pushed outward, and the gas can be discharged through the pressure relief groove. When gas needs to flow in, the ball valve will close the pressure relief branch pipe so that the gas cannot flow in, thereby preventing external foreign matter from entering the pressure relief cylinder.

[0021] In a possible implementation, a box cover is detachably connected to the mounting base plate via bolts, and a top of the box cover is processed to form slopes sloping toward both sides.

[0022] With the above-mentioned structural form, the upper cover of the box can provide protection for the internal electrical components, and the slopes on both sides thereof can prevent the accumulation of rainwater and dust.

[0023] In summary, the present invention has the following beneficial technical effects:

[0024] When the tube body is conveying chemical gas and the air pressure inside the tube is unexpectedly too high, the gas will push the sliding piston upward, causing the electrical contact shaft installed on it to electrically contact the electrical contact piece during the sliding process. At this time, the signal transmitting module is energized to send an alarm signal, which serves as an alarm. At the same time, if the air pressure continues to increase, it will further push the sliding piston upward. At this time, part of the gas will be discharged through the pressure relief piece to avoid excessive increase in the air pressure inside the tube, thereby preventing the tube body from bursting. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the alarm pressure relief structure of the utility model;

[0029] Figure 4 This is a schematic diagram of the structure of the alarm box of the present utility model;

[0030] Figure 5 This is a schematic diagram of the electrical contact shaft structure of the present utility model.

[0031] In the figure: 1. Pipe body; 11. Connecting branch pipe; 2. Pressure relief cylinder; 21. Cylinder body; 22. Sliding piston; 23. Electrical contact shaft; 231. Slotted shaft; 232. Mounting slot; 233. U-shaped contact piece; 24. Cross guide ring; 25. Reset spring; 3. Alarm box; 31. Mounting base plate; 32. Lithium battery pack; 33. Signal transmitting module; 34. Electrical contact piece; 341. Insulating seat; 342. Elastic conductive piece; 343. Contact; 35. Wire belt; 36. Box cover; 4. Pressure relief piece; 41. Pressure relief branch pipe; 42. Pressure relief outer pipe; 43. Pressure relief groove; 44. Ball valve; 45. Matching ring; 46. Closing spring. DETAILED DESCRIPTION

[0032] The technical solution in the embodiments of the present application is to solve the problems of the above-mentioned background technology, and the overall idea is as follows:

[0033] like Figure 1 - Figure 4As shown, the present embodiment provides a chemical gas conveying pipe, comprising a pipe body 1, to which a connecting branch 11 is connected, a pressure relief cylinder 2 is installed on the connecting branch 11, an alarm box 3 is installed on the pressure relief cylinder 2, which is used to send an alarm signal when the pipe pressure surges, and a pressure relief member 4 is installed on one side of the pressure relief cylinder 2, wherein the pressure relief cylinder 2 includes a cylinder body 21, a sliding piston 22 is slidably provided in the cylinder body 21, an electrical contact shaft 23 is fixedly connected to the sliding piston 22, the alarm box 3 includes a mounting base 31, on which a lithium battery block 32, a signal transmitting module 33 and an electrical contact member 34 are sequentially mounted, and The electrical contact shaft 23 can electrically contact the electrical contact piece 34 during the sliding process. Through the above-mentioned structural form, when the tube body 1 transports chemical gas and the air pressure in the tube is accidentally too high, the gas will push the sliding piston 22 to move upward, so that the electrical contact shaft 23 installed thereon will electrically contact the electrical contact piece 34 during the sliding process. At this time, the signal transmitting module 33 is energized to send an alarm signal, which plays an alarm role. At the same time, if the air pressure continues to increase, it will further push the sliding piston 22 to move upward. At this time, part of the gas will be discharged through the pressure relief piece 4 to avoid excessive increase in the air pressure in the tube, thereby preventing the tube body 1 from bursting.

[0034] Among them, the signal transmission module 33 can adopt TurMass produced by Hailingke TM The module HLK-L08 has the characteristics of small size, low power consumption, high cost performance and long-distance communication. The operating frequency band is 470MHz~510MHz (default 485.3MHz) and the communication standard is TurMass TM , the transmission distance exceeds 1.2 kilometers, and other wireless transmission modules that meet the transmission distance requirements can also be used.

[0035] like Figure 4 As shown, the electrical contact 34 includes an insulating seat 341 fixedly mounted in the middle of the mounting base 31, and two elastic conductive sheets 342 are fixedly provided on the insulating seat 341. The ends of the elastic conductive sheets 342 are electrically connected to contacts 343. Through the above-mentioned structural form, when the electrical contact shaft 23 moves upward and contacts the contacts 343 on both sides, the signal transmitting module 33 will be powered on and send an alarm signal, and the elastic conductive sheet 342 can rely on its own elasticity to ensure that the contacts 343 are always in contact with the electrical contact shaft 23.

[0036] Among them, the positive electrode of the lithium battery block 32 is electrically connected to one of the elastic conductive sheets 342 through a wire belt 35, the positive electrode of the signal transmitting module 33 is electrically connected to the other elastic conductive sheet 342 through a wire belt 35, and the negative electrode of the lithium battery block 32 is electrically connected to the negative electrode of the signal transmitting module 33 through a wire belt 35. Through the above-mentioned structural form, a power supply circuit for the signal transmitting module 33 can be formed, and the on-off of the circuit is controlled by the contact and separation between the electrical contact shaft 23 and the contact 343, thereby realizing the control of the position change of the sliding piston 22 by the change of air pressure, and finally realizing the on-off control of the power supply circuit of the signal transmitting module 33 by air pressure, that is, when the air pressure increases, the signal transmitting module 33 is powered on and works, and when the gas decreases, the signal transmitting module 33 is powered off and stops working.

[0037] like Figure 3 As shown, a cross guide ring 24 is fixedly provided on the upper part of the pressure relief cylinder 2, and the top of the electrical contact shaft 23 slides in the cross guide ring 24, and a reset spring 25 is provided on the outer sleeve of the electrical contact shaft 23. The two ends of the reset spring 25 are in close contact with the cross guide ring 24 and the sliding piston 22 respectively. Through the above-mentioned structural form, the cross guide ring 24 can restrain the top of the electrical contact shaft 23 to prevent the electrical contact shaft 23 from deviating during the up and down movement, and the reset spring 25 can push the sliding piston 22 to reset when the air pressure drops, thereby ensuring the overall airtightness of the pipeline.

[0038] like Figure 5 As shown, the electrical contact shaft 23 includes a slotted shaft 231, and mounting slots 232 are provided in the grooves on both sides of the slotted shaft 231. U-shaped contact pieces 233 are clamped and installed in the mounting slots 232. Through the above-mentioned structural form, when the U-shaped contact piece 233 contacts with the contacts 343 on both sides, it can achieve electrical connection between the contacts 343, thereby connecting the power supply circuit of the signal transmission module 33.

[0039] like Figure 3 As shown, the pressure relief component 4 includes a pressure relief branch pipe 41 connected to the interior of the cylinder body 21. The outer end of the pressure relief branch pipe 41 is sealed and connected to the pressure relief outer pipe 42. A plurality of pressure relief grooves 43 are provided on the inner wall of the pressure relief outer pipe 42. Through the above-mentioned structural form, when the air pressure is too high, the sliding piston 22 will be continuously pushed upward until the interface of the pressure relief branch pipe 41 is exposed. At this time, part of the gas will be discharged from the pressure relief outer pipe 42 along the pressure relief branch pipe 41, thereby avoiding excessive increase of the air pressure in the cylinder body 21.

[0040] In addition, a ball valve 44 is slidingly provided in the pressure relief outer tube 42, and a matching ring 45 is fixedly provided at the mouth of the pressure relief branch pipe 41, and a closing spring 46 is fixedly provided on the matching ring 45. The end of the closing spring 46 is in contact with the ball valve 44. Through the above-mentioned structural form, a simple one-way valve can be formed, that is, only gas is allowed to flow out of the pressure relief outer tube 42, and gas is not allowed to flow into the pressure relief outer tube 42. Specifically, when gas needs to be discharged, the ball valve 44 will be pushed outward, and the gas can be discharged through the pressure relief groove 43 at this time. When gas needs to flow in, the ball valve 44 will close the pressure relief branch pipe 41 so that the gas cannot flow in, thereby preventing external foreign matter from entering the pressure relief cylinder 2.

[0041] like Figure 1 As shown, the mounting base plate 31 is detachably connected to a box cover 36 by bolts, and the top of the box cover 36 is processed to form slopes sloping toward both sides. Through the above-mentioned structural form, the box cover 36 can provide protection for the internal electrical components, and at the same time, the slopes on both sides can prevent the accumulation of rainwater and dust.

[0042] The use principle and use process of this utility model:

[0043] When the tube body 1 transports chemical gas and the air pressure in the tube is unexpectedly too high, the gas will push the sliding piston 22 upward, so that the electrical contact shaft 23 installed thereon is in electrical contact with the electrical contact piece 34 during the sliding process. At this time, the signal transmitting module 33 is energized to send an alarm signal, which plays an alarm role. Specifically, the on-off of the power supply circuit of the signal transmitting module 33 is controlled by the contact and separation between the electrical contact shaft 23 and the contact 343, thereby realizing the control of the position change of the sliding piston 22 by the change of air pressure, and finally realizing the on-off control of the power supply circuit of the signal transmitting module 33 by the air pressure, that is, when the air pressure increases, the signal transmitting module 33 is energized to work, and when the gas decreases, the signal transmitting module 33 is de-energized and stops working.

[0044] At the same time, if the air pressure continues to increase, it will further push the sliding piston 22 upward. At this time, part of the gas will be discharged through the pressure relief part 4 to avoid excessive increase in the air pressure in the tube, thereby preventing the tube body 1 from bursting. Specifically, a simple one-way valve is formed by the ball valve 44 and the closing spring 46, that is, only allowing gas to flow out of the pressure relief outer tube 42, and not allowing gas to flow into the pressure relief outer tube 42. Specifically, when gas needs to be discharged, the ball valve 44 will be pushed outward, and the gas can be discharged through the pressure relief groove 43. When gas needs to flow in, the ball valve 44 will close the pressure relief branch pipe 41 so that the gas cannot flow in, thereby preventing external foreign matter from entering the pressure relief cylinder 2.

[0045] Finally, it should be noted that the above embodiments are merely examples for the purpose of illustrating the present invention and are not intended to limit the embodiments. Those skilled in the art will readily appreciate that other variations or modifications based on the above description are possible. It is not necessary and impossible to provide an exhaustive list of all possible embodiments. However, any obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A chemical gas delivery pipe, characterized in that: include: A pipe body (1) is connected to a connecting branch pipe (11), and a pressure relief cylinder (2) is installed on the connecting branch pipe (11); An alarm box (3) is mounted on the pressure relief cylinder (2) and is used to send an alarm signal when the pipe pressure surges; A pressure relief member (4) is mounted on one side of the pressure relief cylinder (2); The pressure relief cylinder (2) comprises a cylinder body (21), a sliding piston (22) is slidably provided in the cylinder body (21), an electrical contact shaft (23) is fixedly connected to the sliding piston (22), and the alarm box (3) comprises a mounting base (31), on which a lithium battery block (32), a signal transmission module (33) and an electrical contact member (34) are sequentially mounted, and the electrical contact shaft (23) can be in electrical contact with the electrical contact member (34) during the sliding process.

2. The chemical gas delivery pipe according to claim 1, characterized in that: The electrical contact member (34) comprises an insulating seat (341) fixedly mounted on the middle of the mounting substrate (31), two elastic conductive sheets (342) are fixedly mounted on the insulating seat (341), and the ends of the elastic conductive sheets (342) are electrically connected to contacts (343).

3. The chemical gas delivery pipe according to claim 2, characterized in that: The positive electrode of the lithium battery block (32) is electrically connected to one of the elastic conductive sheets (342) via a conductor strip (35), the positive electrode of the signal transmitting module (33) is electrically connected to the other elastic conductive sheet (342) via a conductor strip (35), and the negative electrode of the lithium battery block (32) is electrically connected to the negative electrode of the signal transmitting module (33) via a conductor strip (35).

4. The chemical gas delivery pipe according to claim 1, characterized in that: A cross guide ring (24) is fixedly provided on the upper portion of the pressure relief cylinder (2), the top of the electrical contact shaft (23) slides in the cross guide ring (24), and a reset spring (25) is provided on the outer sleeve of the electrical contact shaft (23), and the two ends of the reset spring (25) are in close contact with the cross guide ring (24) and the sliding piston (22) respectively.

5. The chemical gas delivery pipe according to claim 1, characterized in that: The electrical contact shaft (23) comprises a slotted shaft (231), and mounting slots (232) are provided in the grooves on both sides of the slotted shaft (231), and U-shaped contact pieces (233) are mounted in the mounting slots (232).

6. The chemical gas delivery pipe according to claim 1, characterized in that: The pressure relief component (4) comprises a pressure relief branch pipe (41) connected to the interior of the cylinder body (21); the outer end of the pressure relief branch pipe (41) is tightly connected to a pressure relief outer pipe (42); and a plurality of pressure relief grooves (43) are formed on the inner wall of the pressure relief outer pipe (42).

7. The chemical gas delivery pipe according to claim 6, characterized in that: A ball valve (44) is slidably provided in the pressure relief outer tube (42), a matching ring (45) is fixedly provided at the mouth of the pressure relief branch tube (41), a closing spring (46) is fixedly provided on the matching ring (45), and the end of the closing spring (46) contacts the ball valve (44).

8. The chemical gas delivery pipe according to claim 1, characterized in that: The mounting base plate (31) is detachably connected to a box upper cover (36) via bolts, and the top of the box upper cover (36) is processed to form slopes sloping toward both sides.

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