Safety protection assembly for chemical pipeline connection

Abstract

The invention relates to the technical field of pipeline safety, in particular to a safety protection assembly for chemical pipeline connection, which comprises a left side pipeline, a right side pipeline, a first flange mounted at the right end of the left side pipeline, and a bolt combination for connecting the first flange and a second flange together, the protection assembly is installed between the first flange and the second flange at the same time through the bolt combination, a detection assembly is arranged on the protection assembly, and the detection end of the detection assembly extends to the combination face of the first flange and the second flange and is used for detecting whether the first flange and the second flange leak water or not. The other end of the detection assembly extends to the left side pipeline or the right side pipeline and is used for detecting whether the left side pipeline or the right side pipeline is bent or not, it is guaranteed that water seepage is not likely to happen to the joint of the left side pipeline and the right side pipeline, and it is guaranteed that economic benefits are not affected.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline safety, and particularly relates to a safety protection component for chemical pipeline connection. Background Art

[0002] In the chemical industry, in order to connect two pipelines together, flange connection is mostly adopted. That is, flanges are respectively installed on the two pipe orifices, bolts are provided on the two flanges, a sealing ring is provided between the two flanges, and the two flanges are connected together by bolts, and then the sealing ring is used for sealing to prevent water seepage.

[0003] According to the construction and working environment requirements, the two pipelines may be PVC chemical pipelines or flexible chemical pipelines. Among them, the risk of connecting flexible pipelines together by flanges is relatively high, which is mainly manifested in that when the pipeline is replaced, the pipeline will bend, and the bending force is transmitted from the two pipe orifices to between the two flanges. Over time, the flange orifice will become loose and water seepage will occur. The prior art lacks protection and detection functions. When the above-mentioned leakage phenomenon occurs suddenly, it will affect the economic benefits. Summary of the Invention

[0004] In order to solve the above problems, the present invention provides a safety protection component for chemical pipeline connection, including a left pipeline, a right pipeline, a first flange installed at the right end of the left pipeline, a second flange installed at the left end of the right pipeline, a bolt combination for connecting the first flange and the second flange together, and a protection component installed between the first flange and the second flange through the bolt combination. A detection component is provided on the protection component. The detection end of the detection component extends to the joint surface of the first flange and the second flange to detect whether the first flange and the second flange leak water, and the other end of the detection component extends to the left pipeline or the right pipeline to detect whether the left pipeline or the right pipeline bends.

[0005] As a further preferred option, a first contraction part is provided at the left end of the first flange, a second contraction part is provided on the right side of the second flange, the left pipeline is tightened and fixed in the left first contraction part, the right pipeline is tightened and fixed in the right second contraction part, and locking grooves are formed on the outer circumferential surfaces of the first contraction part and the second contraction part.

[0006] As a further preference, the protection component includes a U-shaped protection seat with an upward opening. The left and right sides thereof are provided with vertically upward limiting parts. Clamping grooves are formed in the left limiting part and the right limiting part. The left limiting part is upwardly limited on the left end of the first flange along the first contraction part through the clamping groove, and the right limiting part is upwardly limited on the right end of the second flange along the second contraction part through the clamping groove. The bolt assembly includes a first part of bolts for locking the interfaces of the first flange and the second flange together, and also includes a second part of bolts for locking the first flange, the second flange, and the left and right limiting parts together;

[0007] As a further preference, a backing plate is provided in the middle of the bottom surface of the U-shaped protection seat. The backing plate is vertically upwardly limited on the left surface of the first flange, and the top end of the backing plate is simultaneously limited on the bottom of one of the first part of bolts.

[0008] As a further preference, a secondary limiting part is provided on the left side surface of the left limiting part. The secondary limiting part is vertically upward and is provided with a secondary clamping groove. The left secondary limiting part is upwardly limited on the left end of the first contraction part along the first contraction part through the secondary clamping groove. A secondary limiting part is also provided on the right side surface of the right limiting part. The right secondary limiting part is vertically upward and is provided with a secondary clamping groove. The right secondary limiting part is upwardly limited on the right end of the second contraction part along the second contraction part through the secondary clamping groove.

[0009] As a further preference, the detection component includes a detection rod and detection air bags. Two sets of front and rear through holes are formed in the left and right limiting parts. The front through hole penetrates the left secondary limiting part to the left and the right secondary limiting part to the right, and the rear through hole penetrates the left secondary limiting part to the left and the right secondary limiting part to the right. Two detection cavities are formed in the merged end of the first flange and the second flange. Detection holes communicating with the front detection cavity are formed inwards from the front side of the merged end of the first flange and the second flange, and detection holes communicating with the rear detection cavity are formed inwards from the rear side of the merged end of the first flange and the second flange. There are four sets of the detection components. The detection rod penetrates through the through holes of the limiting part and the secondary limiting part. The left and right detection air bags on the same side are installed on both sides of the merged end of the first flange and the second flange. One end of the detection rod is connected to the detection air bag, and the other end of the detection rod reaches outside the outer circular surface of the left pipeline or the right pipeline. A first spring is sleeved on the detection rod. A push plate is provided on the detection rod. The two ends of the first spring are elastically limited between the push plate and the limiting part.

[0010] As a further preference, the detection assembly further includes detection rings respectively sleeved on the left pipeline and the right pipeline. The detection rings on the same side are located outside the secondary limiting portions on the same side. A second spring is connected between the detection rings on the same side and the secondary limiting portions on the same side. One end of the detection rod extending outside the outer circumferential surface of the left pipeline or the right pipeline approaches the detection ring.

[0011] As a further preference, a sleeve hole is formed in the middle of the detection ring, and the diameter of the sleeve hole is larger than the diameters of the left pipeline and the right pipeline.

[0012] The beneficial effects of the present invention compared with the prior art are as follows:

[0013] 1. Position the outer ends of the first contraction portion on the left side and the second contraction portion on the right side. That is to say, the left pipeline and the right pipeline are fixed by the U-shaped protective seat within the connecting portion extended by the first flange, the second flange, the first contraction portion, and the second contraction portion on the right side. Therefore, the left pipeline and the right pipeline will not bend within this connecting portion. In other words, the pipeline portions within the first contraction portion and the second contraction portion on the right side will not easily bend, and the pipeline portions within the first flange and the second flange will not easily bend either. During actual use of the pipeline, even if the left extension portion of the left pipeline is a flexible hose, even if the right extension portion of the right pipeline is a flexible hose, and even if they bend during work in the chemical industry due to work requirements, the pipeline portions restricted within the first contraction portion, the second contraction portion, the first flange, and the second flange will not bend and deform, thereby ensuring that the connection between the left pipeline and the right pipeline is not prone to water seepage and ensuring that the economic benefits are not affected.

[0014] 2. When the pipeline is dragged during construction and causes the pipeline to bend, the pipe wall of the left pipeline or the right pipeline will act on the sleeve hole with the sleeve hole as the deflection gap, and the sleeve hole will act on the detection ring on the same side with the deflection force, which will cause the detection ring to move towards the direction of the secondary limiting portion. At this time, the second spring compresses and shortens to store elastic force. The detection ring pushes the detection rod, the detection rod pushes the push plate, the push plate pushes the first spring, and the first spring also compresses and shortens to store elastic force. The detection rod compresses the detection airbag, and the detection airbag blows air into the detection cavity between the docking surfaces of the first flange and the second flange. If the sealing ring between the first flange and the second flange is damaged and water seeps, inevitably water will seep into the detection cavity. At this time, the compressed detection airbag blows air into the detection cavity, and the seepage water in the detection cavity can be discharged outward through the detection hole. By this phenomenon, it can be known that the sealing performance between the first flange and the second flange becomes poor and the sealing ring needs to be replaced. According to this detection principle, during pipeline maintenance, the above self-check can also be carried out by manually pushing the detection ring and having the detection ring push the detection rod to compress the detection airbag to blow air. Description of the Drawings

[0015] Figure 1 Schematic diagram of the main view plane when the safety protection component for chemical pipeline connection provided by the embodiment of the present invention is used on the left and right pipelines;

[0016] Figure 2 The safety protection component for chemical pipeline connection provided by the embodiment of the present invention is Figure 1 The three-dimensional schematic diagram drawn therefrom;

[0017] Figure 3 The safety protection component for chemical pipeline connection provided by the embodiment of the present invention is Figure 2 The schematic diagram after partial section under the front side view drawn therefrom;

[0018] Figure 4 The safety protection component for chemical pipeline connection provided by the embodiment of the present invention is Figure 3 The enlarged schematic diagram of part A drawn therefrom;

[0019] Figure 5 The safety protection component for chemical pipeline connection provided by the embodiment of the present invention is Figure 3 The schematic diagram under the rear side view drawn therefrom;

[0020] Figure 6 Schematic diagram of the safety protection component for chemical pipeline connection provided by the embodiment of the present invention;

[0021] Figure 7 The safety protection component for chemical pipeline connection provided by the embodiment of the present invention is Figure 6 The schematic diagram under another view angle drawn therefrom;

[0022] Figure 8 Schematic diagram of only the left and right pipelines being connected together by flanges in the safety protection component for chemical pipeline connection provided by the embodiment of the present invention.

[0023] In the figure: 1, left pipeline; 2, right pipeline; 3, first flange; 31, first contraction part; 4, second flange; 41, second contraction part; 341, locking groove; 5, bolt combination; 51, first part bolt; 52, second part bolt; 6, protection component; 61, U-shaped protection seat; 611, backing plate; 62, limiting part; 621, secondary limiting part; 622, secondary clamping groove; 63, clamping groove; 7, detection component; 71, detection rod; 72, detection airbag; 73, detection ring; 731, sleeve hole; 8, detection cavity; 9, detection hole; 10, first spring; 11, push plate; 12, second spring; 13, through hole. Detailed implementation mode

[0024] The following will clearly and completely describe the above and additional embodiments and advantages of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only partial embodiments of the present invention, rather than all embodiments.

[0025] In one embodiment, as Figures 1-8 shown:

[0026] This embodiment provides a safety protection component for chemical pipeline connection, including a left pipeline 1, a right pipeline 2, a first flange 3 installed at the right end of the left pipeline 1, a second flange 4 installed at the left end of the right pipeline 2, and a bolt assembly 5 that connects the first flange 3 and the second flange 4 together. The bolt assembly 5 includes a first part of bolts 51 for locking the interfaces of the first flange 3 and the second flange 4 together, and also includes a second part of bolts 52 for locking the first flange 3, the second flange 4, and at the same time locking the left and right limiting parts 62 together, and a protection component 6 installed between the first flange 3 and the second flange 4 through the bolt assembly 5. A detection component 7 is provided on the protection component 6. The detection end of the detection component 7 extends to the combined surface of the first flange 3 and the second flange 4 to detect whether the first flange 3 and the second flange 4 are leaking water, and the other end of the detection component 7 extends to the left pipeline 1 or the right pipeline 2 to detect whether the left pipeline 1 or the right pipeline 2 is bent.

[0027] A first contraction part 31 is provided at the left end of the first flange 3, and a second contraction part 41 is provided on the right side of the second flange 4. The left pipeline 1 is tightened and fixed within the first contraction part 31 on the left side, and the right pipeline 2 is tightened and fixed within the second contraction part 41 on the right side. Locking grooves 341 are provided on the outer circumferential surfaces of the first contraction part 31 and the second contraction part 41. The first flange 3 and the second flange 4 are respectively connected to the pipe orifices of the two pipes by using the first contraction part 31 and the second contraction part 41, and then steel wires or clamps are wound around the locking grooves 341 for locking and fixing.

[0028] The protection component 6 includes a U-shaped protection seat 61 with an upward opening. Limiting parts 62 perpendicular to the upward direction are provided on its left and right sides. Clamping grooves 63 are provided on the left limiting part 62 and the right limiting part 62. The left limiting part 62 is restricted upward along the first contraction part 31 on the left end of the first flange 3 through the clamping groove 63, and the right limiting part 62 is restricted upward along the second contraction part 41 on the right end of the second flange 4 through the clamping groove 63. The bolt assembly 5 includes a first part of bolts 51 for locking the interfaces of the first flange 3 and the second flange 4 together, and also includes a second part of bolts 52 for locking the first flange 3, the second flange 4, and at the same time locking the left and right limiting parts 62 together;

[0029] In the middle of the bottom surface of the U-shaped protection seat 61, there is a backing plate 611. The backing plate 611 vertically upwardly abuts against the left surface of the first flange 3, and the top end of the backing plate 611 also abuts against the bottom of one of the first part bolts 51.

[0030] On the left side surface of the left limiting part 62, there is a secondary limiting part 621. The secondary limiting part 621 extends vertically upward and is provided with a secondary clamping groove 622. The left secondary limiting part 621 is upwardly limited along the first contraction part 31 at the left end of the first contraction part 31 through the secondary clamping groove 622. On the right side surface of the right limiting part 62, there is also a secondary limiting part 621. The right secondary limiting part 621 also extends vertically upward and is provided with a secondary clamping groove 622. The right secondary limiting part 621 is upwardly limited along the second contraction part 41 at the right end of the second contraction part 41 through the secondary clamping groove 622.

[0031] The detection assembly 7 includes a detection rod 71 and detection air bags 72. There are two sets of front and rear through holes 13 on the left and right limiting parts 62. The front through hole 13 penetrates the left secondary limiting part 621 to the left and penetrates the right secondary limiting part 621 to the right. The rear through hole 13 penetrates the left secondary limiting part 621 to the left and penetrates the right secondary limiting part 621 to the right. Inside the combined end of the first flange 3 and the second flange 4, there are two front and rear detection cavities 8. From the front side of the combined end of the first flange 3 and the second flange 4, a detection hole 9 communicating with the front detection cavity 8 is opened inward. From the rear side of the combined end of the first flange 3 and the second flange 4, a detection hole 9 communicating with the rear detection cavity 8 is opened inward. There are four sets of detection assemblies 7. The detection rod 71 penetrates through the through holes 13 of the limiting part 62 and the secondary limiting part 621. The left and right detection air bags 72 on the same side are installed on both sides of the combined end of the first flange 3 and the second flange 4. One end of the detection rod 71 is connected to the detection air bag 72, and the other end of the detection rod 71 reaches outside the outer circumferential surface of the left pipe 1 or the right pipe 2. A first spring 10 is sleeved on the detection rod 71. A push plate 11 is provided on the detection rod 71. The two ends of the first spring 10 are elastically limited between the push plate 11 and the limiting part 62.

[0032] The detection assembly 7 further includes detection rings 73 respectively sleeved on the left pipe 1 and the right pipe 2. The detection rings 73 on the same side are located outside the secondary limiting part 621 on the same side. A second spring 12 is connected between the detection rings 73 on the same side and the secondary limiting part 621 on the same side. One end of the detection rod 71 that reaches outside the outer circumferential surface of the left pipe 1 or the right pipe 2 is close to the detection ring 73.

[0033] A sleeve hole 731 is opened in the middle of the detection ring 73. The diameter of the sleeve hole 731 is larger than the diameters of the left pipe 1 and the right pipe 2.

[0034] Working principle and technical effect: The left pipeline 1 and the right pipeline 2 are butted together through the first flange 3 and the second flange 4, and then the first flange 3 and the second flange 4 are locked together through the first part of bolts 51, so that the left pipeline 1 and the right pipeline 2 can be connected together. And a sealing ring is arranged between the first flange 3 and the second flange 4 to form a seal to prevent water leakage. What the present invention proposes is that in addition to connecting the left pipeline 1 and the right pipeline 2 through the above flange structure, the butting ends of the left pipeline 1 and the right pipeline 2 can also be reinforced and protected. The specific principle is as follows: While the first flange 3 and the second flange 4 are connected together through the first part of bolts 51, the U-shaped protective seat 61 is placed under the first flange 3 and the second flange 4, and then the U-shaped protective seat 61 is pushed upward. The left and right limiting parts 62 of the U-shaped protective seat 61 move upward, so that the clamping groove 63 of the left limiting part 62 moves upward along the first contraction part 31 on the left, and the right side of the left limiting part 62 is restricted on the left end of the first flange 3. Similarly, the clamping groove 63 of the right limiting part 62 moves upward along the second contraction part 41, and the left side of the right limiting part 62 is restricted on the right end of the second flange 4. It is equivalent to using the left and right limiting parts 62 of the U-shaped protective seat 61 to position the outer ends of the left and right flanges.

[0035] In addition, while the U-shaped protective seat 61 uses the left and right limiting parts 62 to position the outer ends of the butted left and right flanges in the above manner, the left and right pairs of limiting parts 621 will also move upward along the left pipeline 1 and the right pipeline 2 respectively through the secondary clamping grooves 622, and finally the right side of the left secondary limiting part 621 is restricted on the left end of the first contraction part 31, and the left side of the right secondary limiting part 621 is restricted on the right end of the second contraction part 41. It is equivalent to using the left and right additional secondary limiting parts 621 of the U-shaped protective seat 61 to position the outer ends of the first contraction part 31 on the left and the second contraction part 41 on the right. That is to say, the left pipeline 1 and the right pipeline 2 are fixed by the U-shaped protective seat 61 in the connecting part extended by the first flange 3, the second flange 4, the first contraction part 31 and the second contraction part 41 on the right. Therefore, the left pipeline 1 and the right pipeline 2 will not bend in this connecting part. In other words, the pipeline part located in the first contraction part 31 and the second contraction part 41 on the right will not easily bend, and the pipeline part located in the first flange 3 and the second flange 4 will not easily bend. When the pipeline is actually used, even if the left extended part of the left pipeline 1 is a flexible pipe, even if the right extended part of the right pipeline 2 is a flexible pipe, even if they bend during work in the chemical industry due to work needs, but the pipeline part restricted in the first contraction part 31, the second contraction part 41, the first flange 3 and the second flange 4 will not bend and deform, thus ensuring that the connection part (the interface of the two flanges) of the left pipeline 1 and the right pipeline 2 is not prone to water seepage and ensuring that the economic benefits are not affected.

[0036] As Figures 2 to 5 shown, in addition, when the left pipe 1 or the right pipe 2 is bent due to manual operation (such as swinging during pipe dragging), the pipe wall of the left pipe 1 or the right pipe 2 will act on the socket hole 731 with the socket hole 731 as the deflection gap. The socket hole 731 will act the deflection force on the detection ring 73 on its same side, which will cause the detection ring 73 to move towards the direction of the secondary limit portion 621. At this time, the second spring 12 is compressed and shortened and stores elastic force. The detection ring 73 pushes the detection rod 71, the detection rod 71 pushes the push plate 11, the push plate 11 pushes the first spring 10, and the first spring 10 is also compressed and shortened and stores elastic force. The detection rod 71 compresses the detection airbag 72, and the detection airbag 72 blows air into the detection chamber 8 between the butting surfaces of the first flange 3 and the second flange 4. If the sealing ring between the first flange 3 and the second flange 4 is damaged and water seeps, inevitably water seeps into the detection chamber 8. At this time, the detection airbag 72 is compressed to blow air into the detection chamber 8, and the water seepage in the detection chamber 8 can be discharged outward through the detection hole 9. Through this phenomenon, it is known that the sealing performance of the first flange 3 and the second flange 4 becomes poor and the sealing ring needs to be replaced. According to this detection principle, during pipeline maintenance, the above self-inspection can also be carried out by manually pushing the detection ring 73, and the detection ring 73 pushes the detection rod 71 to compress the detection airbag 72 to blow air, which improves the function to reflect the protection performance.

[0037] The above orientation references do not represent the specific orientations of the components in this embodiment. This embodiment is only for the convenience of describing the solution and is set with relative descriptions with reference to the orientations in the figure. In essence, the specific orientations of the components are based on their actual installation, actual use, and the habitual orientation descriptions of those skilled in the art. This is hereby stated.

[0038] The above specific implementation manners have further elaborated on the invention purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above are only the specific implementation manners of the present invention and are not used to limit the protection scope of the present invention. It is particularly pointed out that for those skilled in the art, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety protection component for chemical pipeline connection, characterized in that: The invention comprises a left-side pipe (1), a right-side pipe (2), a first flange (3) installed at the right end of the left-side pipe (1), a second flange (4) installed at the left end of the right-side pipe (2), a bolt assembly (5) connecting the first flange (3) and the second flange (4), and a protective component (6) installed between the first flange (3) and the second flange (4) via the bolt assembly (5); the protective component (6) is provided with a detection component (7); a detection end of the detection component (7) extends to the combined surface of the first flange (3) and the second flange (4) to detect whether the first flange (3) and the second flange (4) are leaking; and the other end of the detection component (7) extends to the left-side pipe (1) or the right-side pipe (2) to detect whether the left-side pipe (1) or the right-side pipe (2) is bent.

2. The safety protection assembly for chemical pipeline connection according to claim 1 is characterized in that: A first contraction portion (31) is provided at the left end of the first flange (3), and a second contraction portion (41) is provided at the right side of the second flange (4); the left side pipe (1) is tightened and fixed in the first contraction portion (31) on the left side, and the right side pipe (2) is tightened and fixed in the second contraction portion (41) on the right side; locking grooves (341) are provided on the outer circumferential surfaces of the first contraction portion (31) and the second contraction portion (41).

3. The safety protection assembly for chemical pipeline connection according to claim 2 is characterized in that: The protection component (6) comprises a U-shaped protection seat (61), the opening of the U-shaped protection seat (61) faces upward, and the left and right sides thereof are provided with vertically upward limiting parts (62), and the limiting parts (62) on the left and right sides are provided with clamping grooves (63), and the limiting part (62) on the left side is upwardly limited to the left end of the first flange (3) along the first contraction part (31) through the clamping groove (63), and the limiting part (62) on the right side is upwardly limited to the right end of the second flange (4) along the second contraction part (41) through the clamping groove (63), and the bolt assembly (5) comprises a first part of bolts (51) for locking the interface of the first flange (3) and the second flange (4) together, and also comprises a second part of bolts (52) for locking the first flange (3), the second flange (4), and the left and right limiting parts (62) together.

4. The safety protection assembly for chemical pipeline connection according to claim 3 is characterized in that: A support plate (611) is provided in the middle of the bottom surface of the U-shaped protective seat (61), and the support plate (611) is vertically restricted upward on the left surface of the first flange (3), and the top end of the support plate (611) is also restricted on the bottom of one of the first part bolts (51).

5. The safety protection assembly for chemical pipeline connection according to claim 4, characterized in that: A secondary limiting portion (621) is provided on the left side surface of the limiting portion (62) on the left side, and the secondary limiting portion (621) is vertically upward and has a secondary clamping groove (622). The secondary limiting portion (621) on the left side is upwardly limited to the left end of the first shrinking portion (31) along the first shrinking portion (31) through the secondary clamping groove (622). A secondary limiting portion (621) is also provided on the right side surface of the limiting portion (62) on the right side, and the secondary limiting portion (621) on the right side is also vertically upward and has a secondary clamping groove (622). The secondary limiting portion (621) on the right side is upwardly limited to the right end of the second shrinking portion (41) along the second shrinking portion (41) through the secondary clamping groove (622).

6. The safety protection assembly for chemical pipeline connection according to claim 5, characterized in that: The detection assembly (7) comprises a detection rod (71) and a detection airbag (72). The left and right limiting parts (62) are provided with two groups of front and rear through holes (13). The front through hole (13) penetrates the auxiliary limiting part (621) on the left side to the left and penetrates the auxiliary limiting part (621) on the right side to the right. The rear through hole (13) penetrates the auxiliary limiting part (621) on the left side to the left and penetrates the auxiliary limiting part (621) on the right side to the right. The front and rear detection cavities (8) are provided in the combined end of the first flange (3) and the second flange (4). A detection hole (9) communicating with the front detection cavity (8) is provided inwardly from the front side of the combined end of the first flange (3) and the second flange (4). A detection hole (9) communicating with the detection cavity (8) at the rear side is provided inside, the detection assembly (7) is composed of four groups, the detection rod (71) passes through the through hole (13) of the limiting portion (62) and the auxiliary limiting portion (621), the left and right detection airbags (72) on the same side are installed on both sides of the combined end of the first flange (3) and the second flange (4), one end of the detection rod (71) is connected to the detection airbag (72), and the other end of the detection rod (71) reaches outside the outer circumferential surface of the left pipe (1) or the right pipe (2), a first spring (10) is sleeved on the detection rod (71), and a push plate (11) is provided on the detection rod (71), and the two ends of the first spring (10) are elastically restricted between the push plate (11) and the limiting portion (62).

7. The safety protection assembly for chemical pipeline connection according to claim 6, characterized in that: The detection assembly (7) further comprises detection rings (73) respectively sleeved on the left pipe (1) and the right pipe (2); the detection ring (73) on the same side is located outside the auxiliary limiting portion (621) on the same side; a second spring (12) is connected between the detection ring (73) on the same side and the auxiliary limiting portion (621) on the same side; and the detection rod (71) reaches an end outside the outer circumferential surface of the left pipe (1) or the right pipe (2) close to the detection ring (73).

8. The safety protection assembly for chemical pipeline connection according to claim 7, characterized in that: A sleeve hole (731) is provided in the middle of the detection ring (73), and the diameter of the sleeve hole (731) is larger than the diameters of the left pipe (1) and the right pipe (2).

Images