Double-layer flanged pipe fitting with safety discharge port

Abstract

The invention relates to the technical field of flanged pipe fittings, in particular to a double-layer flanged pipe fitting with a safety relief port, which comprises two flanged pipes, the two flanged pipes are connected through a bolt, a first assembly sleeve is mounted in one flanged pipe, a second assembly sleeve is mounted in the other flanged pipe, and the safety relief port is arranged in the second assembly sleeve. One end of the assembly sleeve II sleeves one end of the assembly sleeve I; the flange pipe has the beneficial effects that the reserved groove, the first electromagnetic one-way valve, the second electromagnetic one-way valve, the first splicing sleeve and the second splicing sleeve are arranged on the flange pipe, so that safe pressure relief of gas conveyed in the flange pipe is achieved. When the pressure in the pipeline abnormally rises, switches of the first electromagnetic one-way valve and the second electromagnetic one-way valve can be triggered at the same time, gas flows into the interlayer through the first electromagnetic one-way valve, then enters the reserved groove and is finally exhausted through the second electromagnetic one-way valve, damage to a pipeline system caused by too high pressure is effectively avoided, and production safety is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of flange pipe fittings, in particular to a double-layer flange pipe fitting with a safety relief port. BACKGROUND

[0002] In the field of industrial production and pipeline transportation, flange pipe fittings are important components for connecting pipelines and are widely used in gas, liquid and other medium transportation systems. However, in actual application, there are some problems with traditional flange pipe fittings that need to be solved.

[0003] On the one hand, during gas transportation, the pressure in the pipeline may rise sharply due to pressure changes, equipment failures or other sudden situations. If the pressure cannot be released in time, it will cause serious damage to the pipeline system and even cause safety accidents. However, the existing flange pipe fittings mostly lack effective safety relief mechanisms and cannot release the pressure in the pipeline in time and safely when the pressure is abnormal, which brings great hidden dangers to production safety.

[0004] On the other hand, traditional flange pipe fittings lack effective guiding and pre-limiting structures during splicing and installation. During the butt joint of two flange pipes, problems such as inaccurate butt joint and deviation may occur, leading to difficult installation, increased installation time and labor intensity, and even affecting the sealing performance of the flange pipe fittings due to improper installation, thereby affecting the normal operation of the entire pipeline system.

[0005] In addition, the sealing performance of the splicing part of the flange pipe fitting is also one of the key problems. If the sealing effect is not good, gas or liquid may leak, which not only causes resource waste, but also may pollute the surrounding environment and even cause safety accidents. The sealing structure of the existing flange pipe fittings is prone to aging and wear of the sealing material after long-term use, which leads to a decrease in sealing performance and requires frequent maintenance and replacement, increasing the use cost. SUMMARY

[0006] The purpose of the present application is to provide a double-layer flange pipe fitting with a safety relief port to solve the problems raised in the background.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solution: a double-layer flange pipe fitting with a safety relief port, comprising two flange pipes, the two flange pipes being connected by bolts, one of the flange pipes being internally provided with a splicing sleeve one, the other of the flange pipes being internally provided with a splicing sleeve two, the splicing sleeve two being sleeved at one end of the splicing sleeve one; The inner ring port of the flange pipe is provided with a reserved groove, and the flange disc of the flange pipe is inserted and fixed with an electromagnetic one-way valve two, one end of the electromagnetic one-way valve two extending into the reserved groove; The surface of the assembling sleeve one and the assembling sleeve two is fixedly connected with the electromagnetic one-way valve one, when the flange pipe is internally pressure released, the gas flows into the annular space of the assembling sleeve one and the assembling sleeve two through the electromagnetic one-way valve one, and then flows into the reserved groove, and the gas is discharged through the electromagnetic one-way valve two.

[0008] Preferably, a plurality of bolt holes are formed on the flange plate of the flange pipe, and after the two flange pipes are spliced, bolts pass through the corresponding bolt holes on the surfaces of the two flange pipes and are locked.

[0009] Preferably, the assembling sleeve one and the assembling sleeve two are both T-shaped circular pipes, one end of the assembling sleeve one and the assembling sleeve two is integrally formed with an extension plate, a plurality of screws are inserted into the surface of the extension plate, and the screws are screwed on the inner wall of the flange pipe after passing through the extension plate.

[0010] Preferably, the outer ring surface of the extension plate is provided with an embedded groove, the embedded groove is an annular groove, a sealing ring two is fixedly arranged in the embedded groove, the outer ring diameter of the sealing ring two is greater than the outer ring diameter of the extension plate, and the sealing ring two is elastically deformed and clamped between the flange pipe and the extension plate.

[0011] Preferably, the inner ring surface of the assembling sleeve two is provided with a plurality of clamping grooves two, the clamping grooves two are annular grooves, a plurality of rubber rings are fixedly arranged on the outer ring surface of the assembling sleeve one, the rubber rings and the clamping grooves two are matched one by one, and the assembling sleeve two is arranged on the assembling sleeve one, and the rubber rings are inserted into the clamping grooves two.

[0012] Preferably, the reserved groove is an annular groove, a sealing ring one is fixedly arranged in the reserved groove, and the sealing ring one is elastically deformed and clamped between the two flange pipes after the two flange pipes are connected by the bolts.

[0013] Preferably, the two flange pipes are provided with limiting clamping pieces in the reserved groove, and the two flange pipes are connected and limited by the limiting clamping pieces when the bolts are not installed.

[0014] Preferably, the limiting clamping piece comprises a clamping groove one, a handle and a rubber clamping ball, the clamping groove one is a spherical groove, a plurality of clamping grooves one are arranged, and the clamping groove one is arranged on the reserved groove on the inner side of one flange pipe, the handle and the clamping groove one are matched one by one, one end of the handle is inserted into the clamping groove one, the other end of the handle is fixed on the reserved groove on the inner side of the other flange pipe, the rubber clamping ball is in a spherical structure, the rubber clamping ball is fixedly arranged on one end of the handle, the rubber clamping ball is inserted into the clamping groove one, and the diameter of the rubber clamping ball is greater than the width of the slot of the clamping groove one.

[0015] Compared with the prior art, the present application has the following advantages: This invention proposes a double-layer flange pipe fitting with a safety relief port. Through a sandwich structure consisting of a pre-reserved groove, a first electromagnetic check valve, a second electromagnetic check valve, and two assembled sleeves, the gas transported inside the flange pipe is safely relieved. When the pressure inside the pipeline abnormally increases, both the first and second electromagnetic check valves are simultaneously activated. Gas flows into the sandwich structure through the first electromagnetic check valve, then into the pre-reserved groove, and finally exits through the second electromagnetic check valve. This effectively prevents damage to the pipeline system caused by excessive pressure and improves production safety. Simultaneously, a receiving cylinder can be connected to the end of the second electromagnetic check valve to collect and treat the discharged gas, preventing indiscriminate gas discharge and environmental pollution.

[0016] The unique structural design of Assembly Sleeve 1 and Assembly Sleeve 2 allows one end of Assembly Sleeve 1 to insert into one end of Assembly Sleeve 2 when the two flange pipes are pushed towards each other. This provides a guiding structure during the assembly of the two flange pipes, making the connection more accurate and smooth, reducing installation difficulty, and improving installation efficiency. Furthermore, the limiting clamps set in the pre-reserved slots, including slot 1, a handle, and a rubber ball, allow the rubber ball to engage in slot 1 when the two flange pipes are not bolted. The handle then pulls one flange pipe against the side of the other flange pipe, achieving pre-limiting during assembly and further ensuring installation accuracy.

[0017] An embedding groove is made on the outer ring surface of the outer extension plate of both assembly sleeve 1 and assembly sleeve 2, and a second sealing ring is fixed therein. The second sealing ring is clamped between the flange pipe and the outer extension plate, resulting in elastic deformation, which effectively prevents gas or liquid from leaking between the assembly sleeve and the inner wall of the flange pipe. Simultaneously, a second retaining groove is made on the inner ring surface of assembly sleeve 2, and a fixed rubber ring is fitted onto the outer ring surface of assembly sleeve 1. When assembly sleeve 2 is fitted onto assembly sleeve 1, the rubber ring inserts into the second retaining groove, forming multiple seals and ensuring the sandwich sealing effect of assembly sleeve 1 and assembly sleeve 2 at the inner ring of the flange pipe. Furthermore, the first sealing ring, fixed inside the pre-reserved groove, is clamped between the two flange pipes after they are bolted together, resulting in elastic deformation, further enhancing the sealing performance at the flange pipe joint, reducing the risk of leakage, and lowering maintenance costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Sectional view of the structure at point AA; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point B; Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point C; Figure 5 This is a schematic diagram of the assembly structure of the present invention; Figure 6 This is a schematic diagram of the assembled two-piece structure of the present invention; Figure 7 This is a schematic diagram of the flange tube and plug connection structure of the present invention; Figure 8 This is a schematic diagram of the structure of the card slots of the present invention distributed on the flange pipe.

[0019] In the diagram: Flange 1, Bolt hole 101, Bolt 102, Reserved groove 103, Sealing ring 104, Slot 105, Insert handle 106, Rubber ball 107, Assembly sleeve 1 2, Rubber ring 201, Assembly sleeve 2 3, Slot 2 301, Solenoid check valve 1 4, Embedding groove 5, Sealing ring 2 501, Screw 6, Solenoid check valve 2 7. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-8 This invention provides a technical solution: a double-layer flange pipe fitting with a safety relief port, comprising two flange pipes 1 connected by bolts 102. One flange pipe 1 has an assembly sleeve 2 installed inside, and the other flange pipe 1 has an assembly sleeve 3 installed inside, with one end of the assembly sleeve 3 fitted over one end of the assembly sleeve 2. Multiple bolt holes 101 are provided on the flanges of the flange pipes 1. After the two flange pipes 1 are joined, the bolts 102 pass through the corresponding bolt holes 101 on the surfaces of the two flange pipes 1 and are then locked. Both assembly sleeve 1 (2) and assembly sleeve 2 (3) are T-shaped round tubes. One end of each assembly sleeve 1 (2) and assembly sleeve 2 (3) is integrally formed with an extension plate. Multiple screws 6 are inserted into the surface of the extension plate. The screws 6 pass through the extension plate and are screwed into the inner wall of the flange tube 1. An insert groove 5 is opened on the outer ring surface of the extension plate. The insert groove 5 is an annular groove. A sealing ring 2 (501) is fixed inside the insert groove 5. The outer ring diameter of the sealing ring 2 (501) is larger than the outer ring diameter of the extension plate. The sealing ring 2 (501) is clamped between the flange tube 1 and the extension plate and undergoes elastic deformation.

[0022] After inserting the first assembly sleeve 2 into one flange pipe 1, the outer extension plate of the first assembly sleeve 2 is fixed to the inner wall of the flange pipe 1 by screws 6. After pushing the second assembly sleeve 3 into another flange pipe 1, the outer extension plate of the second assembly sleeve 3 is fixed to the inner wall of the other flange pipe 1 by screws 6. When the two flange pipes 1 are pushed towards each other, one end of the first assembly sleeve 2 is inserted into one end of the second assembly sleeve 3, realizing the guiding structure when assembling the two flange pipes 1. After the two flange pipes 1 are assembled together, the first assembly sleeve 2 and the second assembly sleeve 3 form a sandwich at the inner ring surface of the flange pipe 1, which is used to guide the gas during depressurization. The flanges of the two flange pipes 1 are fixed together by bolts 102.

[0023] To improve the sealing performance of assembly kit 1-2 and assembly kit 2-3, the following was proposed: The inner ring surface of the second assembly sleeve 3 is provided with multiple slots 301, which are annular grooves. Multiple rubber rings 201 are fixedly fitted on the outer ring surface of the first assembly sleeve 2. The rubber rings 201 and the slots 301 are matched one by one. After the second assembly sleeve 3 is fitted on the first assembly sleeve 2, the rubber rings 201 are inserted into the slots 301. At this time, the multiple rubber rings 201 form multiple seals at the fitting points of the first assembly sleeve 2 and the second assembly sleeve 3, thereby ensuring the sandwich sealing effect of the first assembly sleeve 2 and the second assembly sleeve 3 at the inner ring of the flange pipe 1.

[0024] To achieve depressurization of the gas transported inside flange pipe 1, the following was proposed: A reserved groove 103 is provided on the inner ring of flange pipe 1. An electromagnetic check valve 7 is inserted and fixed on the flange of flange pipe 1, with one end of the electromagnetic check valve 7 extending into the reserved groove 103. The reserved groove 103 is an annular groove, and a sealing ring 104 is fixed inside the reserved groove 103. After the two flange pipes 1 are connected by bolts 102, the sealing ring 104 is clamped between the two flange pipes 1 and undergoes elastic deformation. Electromagnetic check valves 4 are inserted and fixed on the surfaces of assembly sleeve 2 and assembly sleeve 3. When the internal pressure of flange pipe 1 is depressurized, the gas flows through the electromagnetic check valve 4 into the annular space at the outer ring of assembly sleeve 2 and assembly sleeve 3 and then into the reserved groove 103. The gas is discharged through the electromagnetic check valve 7.

[0025] When pressure relief is required, the opening and closing of electromagnetic check valve 4 and electromagnetic check valve 7 are triggered simultaneously. Electromagnetic check valve 4 introduces the gas inside flange pipe 1 into the jacket. After the gas flows to the reserved groove 103, it is discharged through electromagnetic check valve 7. The discharged gas can be collected and processed by connecting a receiving cylinder through a pipe at the end of electromagnetic check valve 7.

[0026] To achieve pre-limiting positioning when splicing two flange pipes 1, the following was proposed: The two flanges 1 are equipped with limiting clips in the reserved grooves 103. When the two flanges 1 are not installed with bolts 102, they are connected and limited by the limiting clips. The limiting clips include a first groove 105, a handle 106, and a rubber ball 107. The first groove 105 is a spherical groove, and there are multiple first grooves 105. The first groove 105 is opened on the reserved groove 103 inside the flange 1. The handle 106 corresponds to the first groove 105 one by one. One end of the handle 106 is inserted into the first groove 105, and the other end of the handle 106 is fixed to another flange. On the inner side of the reserved groove 103, the rubber ball 107 has a spherical structure. The rubber ball 107 is sleeved and fixed on one end of the plug handle 106, and the rubber ball 107 is inserted into the groove 105. The diameter of the rubber ball 107 is larger than the width of the groove 105. The rubber ball 107 is stuck in the groove 105. The plug handle 106 pulls one flange pipe 1 against the side of another flange pipe 1. In order to strengthen the connection between the two flange pipes 1, the bolt 102 is passed through the bolt hole 101 of the flange at the end of the two flange pipes 1 and then locked.

[0027] The usage method for double-flange pipe fittings with safety relief ports is as follows: First, insert assembly sleeve 2 into a flange pipe 1. Assembly sleeve 2 is a T-shaped round tube with an integrally formed outer plate at one end. Screw 6 is threaded through the outer plate and screwed onto the inner wall of flange pipe 1, thus fixing the outer plate of assembly sleeve 2 to the inner wall of flange pipe 1. Then, push assembly sleeve 3 into another flange pipe 1. Assembly sleeve 3 is also a T-shaped round tube with an outer plate at one end. Screw 6 is threaded through the outer plate and screwed onto the inner wall of flange pipe 1, fixing the outer plate of assembly sleeve 3 to the inner wall of the other flange pipe 1. Push the two flange pipes 1 towards each other. At this point, one end of assembly sleeve 2 is inserted into one end of assembly sleeve 3. Assembly sleeve 2 and assembly sleeve 3 form a guide structure during the assembly of the two flange pipes 1, guiding them to accurately align. Two flange pipes 1 are equipped with limiting clips in the reserved grooves 103. The first groove 105 is a spherical groove, which is opened on the reserved groove 103 inside one flange pipe 1, and multiple grooves are provided. The insert 106 corresponds to the first groove 105 one by one, and one end of the insert 106 is fixed on the reserved groove 103 inside the other flange pipe 1. When the bolts 102 are not installed on the two flange pipes 1, one end of the insert 106 is inserted into the first groove 105. At the same time, the rubber ball 107 (spherical structure, with a diameter larger than the groove width of the first groove 105) which is sleeved and fixed on one end of the insert 106 is also inserted into the first groove 105. The rubber ball 107 is locked in the first groove 105, and the insert 106 pulls one flange pipe 1 to one side of the other flange pipe 1, realizing the pre-limiting when the two flange pipes 1 are spliced. The inner ring surface of the second assembly sleeve 3 has multiple annular grooves 301. Multiple rubber rings 201 are fixedly fitted onto the outer ring surface of the first assembly sleeve 2, with each rubber ring 201 matching one of the grooves 301. When the second assembly sleeve 3 is fitted onto the first assembly sleeve 2, the rubber rings 201 insert into the grooves 301. The multiple rubber rings 201 form multiple seals at the fitting points of the first and second assembly sleeves, ensuring a sandwich seal between the first and second assembly sleeves at the inner ring of the flange pipe 1. The inner ring opening of the flange pipe 1 has a pre-reserved groove 103, which is annular and contains a sealing ring 104. After the two flange pipes 1 are connected by bolts 102, the sealing ring 104 is clamped between the two flange pipes 1, resulting in elastic deformation and achieving a seal at the flange pipe 1 connection. After the bolt 102 passes through the corresponding bolt holes 101 on the surfaces of the two flanges 1, it is tightened to reinforce the connection between the two flanges 1.

[0028] Pressure relief operation: When it is necessary to relieve the pressure of the gas transported inside flange pipe 1, the opening and closing of electromagnetic check valve 4 and electromagnetic check valve 7 are triggered simultaneously. Electromagnetic check valve 4 introduces the gas inside flange pipe 1 into the interlayer formed by assembled sleeve 2 and assembled sleeve 3. After the gas flows to the reserved groove 103, it is discharged through electromagnetic check valve 7. A receiving cylinder can be connected to the end of electromagnetic check valve 7 through a pipe to collect the discharged gas for processing.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-flange pipe fitting with a safety relief port, comprising two flange pipes (1) connected by bolts (102), characterized in that: One flange pipe (1) is equipped with an assembly sleeve 1 (2), and the other flange pipe (1) is equipped with an assembly sleeve 2 (3), with one end of the assembly sleeve 2 (3) fitted onto one end of the assembly sleeve 1 (2); A reserved groove (103) is provided on the inner ring of the flange pipe (1). A solenoid one-way valve (7) is inserted and fixed on the flange of the flange pipe (1). One end of the solenoid one-way valve (7) extends into the reserved groove (103). Electromagnetic check valve 1 (4) is inserted and fixed on the surface of assembly sleeve 1 (2) and assembly sleeve 2 (3). When the pressure inside the flange pipe (1) is released, the gas flows into the annular space at the outer ring of assembly sleeve 1 (2) and assembly sleeve 2 (3) through electromagnetic check valve 1 (4) and then enters the reserved groove (103). The gas is discharged through electromagnetic check valve 2 (7).

2. The double-layer flange pipe fitting with a safety relief port according to claim 1, characterized in that: The flange of the flange tube (1) has multiple bolt holes (101). After the two flange tubes (1) are spliced ​​together, the bolts (102) pass through the corresponding bolt holes (101) on the surfaces of the two flange tubes (1) and are then locked.

3. A double-layer flange pipe fitting with a safety relief port according to claim 1, characterized in that: Both the first assembly sleeve (2) and the second assembly sleeve (3) are T-shaped round tubes. One end of the first assembly sleeve (2) and the second assembly sleeve (3) are integrally formed with an extension plate. Multiple screws (6) are inserted into the surface of the extension plate. The screws (6) pass through the extension plate and are screwed into the inner wall of the flange tube (1).

4. A double-layer flange pipe fitting with a safety relief port according to claim 3, characterized in that: An insert groove (5) is provided on the outer ring surface of the extension plate. The insert groove (5) is an annular groove. A sealing ring 2 (501) is fixed inside the insert groove (5). The outer ring diameter of the sealing ring 2 (501) is larger than the outer ring diameter of the extension plate. The sealing ring 2 (501) is clamped between the flange pipe (1) and the extension plate and undergoes elastic deformation.

5. A double-layer flange pipe fitting with a safety relief port according to claim 1, characterized in that: The inner ring surface of the assembly sleeve 2 (3) is provided with multiple slots 2 (301), which are annular grooves. Multiple rubber rings (201) are fixed on the outer ring surface of the assembly sleeve 1 (2). The rubber rings (201) and slots 2 (301) are matched one by one. After the assembly sleeve 2 (3) is put on the assembly sleeve 1 (2), the rubber rings (201) are inserted into the slots 2 (301).

6. A double-layer flange pipe fitting with a safety relief port according to claim 1, characterized in that: The reserved groove (103) is an annular groove. A sealing ring (104) is fixed inside the reserved groove (103). After the two flange pipes (1) are connected by bolts (102), the sealing ring (104) is clamped between the two flange pipes (1) and produces elastic deformation.

7. A double-layer flange pipe fitting with a safety relief port according to claim 1, characterized in that: The two flanges (1) are provided with limiting clips in the reserved groove (103). When the two flanges (1) are not installed with bolts (102), they are connected and limited by the limiting clips.

8. A double-layer flange pipe fitting with a safety relief port according to claim 7, characterized in that: The limiting device includes a slot (105), a handle (106), and a rubber ball (107). The slot (105) is a spherical groove. Multiple slots are provided, and the slot (105) is opened on a reserved groove (103) inside a flange pipe (1). The handle (106) corresponds to the slot (105) one by one. One end of the handle (106) is inserted into the slot (105), and the other end of the handle (106) is fixed on a reserved groove (103) inside another flange pipe (1). The rubber ball (107) has a spherical structure. The rubber ball (107) is sleeved and fixed on one end of the handle (106), and the rubber ball (107) is inserted into the inside of the slot (105). The diameter of the rubber ball (107) is larger than the width of the slot (105).

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