CN111678052A - A pipeline seal detection mechanism for air separation plant - Google Patents

Abstract

The invention provides a pipeline seal detection mechanism for an air separation plant, comprising a first casing and a second casing, wherein the first casing includes one set of bent plates, two sets of vertical plates and two sets of arc-shaped clamping plates; The two sets of the vertical plates are symmetrically arranged on both sides of the curved plate, the edges of the vertical plates are all provided with semi-circular gaps, the diameter of the semi-circular gap is equal to the outer diameter of the pipe, and the semi-circular gaps are The notch can be completely fitted with the outer surface of the pipe; the two sets of vertical plates are fixedly connected with arc-shaped clamping plates on one side away from the curved plate. The invention can detect the sealing effect of the pipeline by detecting the change of the air pressure in the sealed cavity. If the pipeline located in the sealed cavity leaks, the sealed cavity can re-seal the leaked gas, which can prevent the leaked gas from diffusing to the outside world. , Through the sealing of the sealing cavity to the leakage, the entire air separation plant system can continue to operate in a short time until the next maintenance, which saves time and cost.

Description

A pipeline seal detection mechanism for air separation plant

technical field

The invention belongs to the technical field of air separation plants, and particularly relates to a pipeline seal detection mechanism for air separation plants.

Background technique

The coal-water slurry gasification technology refers to: adding a certain amount of water to the raw coal, and then using a rod mill to form a coal-water slurry with a coal content of about 65%; the coal-water slurry is pressurized by a high-pressure coal slurry pump and sent to gasification The furnace is oxidized with high pressure oxygen to produce synthetic gas. Among them, the high-pressure oxygen required for the production of coal gas is produced by the air separation unit. The raw material of the air separation unit is air, and the energy consumption of the existing air separation unit accounts for 80% of the production cost; as the starting point of the air separation unit, the air compressor needs to be connected with the subsequent equipment of the air separation unit through pipelines. If the sealing performance of the pipeline cannot be guaranteed, the blowing efficiency of the air compressor will be reduced and the energy consumption will be increased.

At present, although there are sealing detection devices between some important pipelines, it is impossible to temporarily seal the leaking connections, so that the entire system can continue to operate; some pipeline sealing devices are inconvenient to install and disassemble, and the cost of detection is high. and hinder maintenance.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention provides a pipeline seal detection mechanism for an air separation plant, comprising a first casing and a second casing, wherein the first casing includes a set of bent plates, two sets of vertical plates and two sets of arcs card board;

The two sets of the vertical plates are symmetrically arranged on both sides of the curved plate, the edges of the vertical plates are all provided with semi-circular gaps, the diameter of the semi-circular gap is equal to the outer diameter of the pipe, and the semi-circular gaps are The notch can be completely fitted with the outer surface of the pipe;

The sides of the two sets of vertical plates away from the curved plates are fixedly connected with arc-shaped snap plates, the central axis of the arc-shaped snap plates coincides with the central axis of the semi-circular notch, and the inner wall of the arc-like snap plates coincides. It can be completely fitted with the outer surface of the pipe;

The structures of the second shell and the first shell are the same and symmetrical to each other;

The curved plate on the first casing and the curved plate on the second casing are fixedly connected by bolts; the curved plate on the first casing, the vertical plate on the first casing, the second casing A sealed cavity can be formed between the bent plate on the casing, the vertical plate on the second casing and the outer surface of the pipe;

An intake valve is provided on the first housing, and the intake valve communicates with the sealed cavity;

The first housing is provided with a pressure switch and an alarm, the detection head of the pressure switch extends inside the sealed cavity, and the pressure switch and the alarm are electrically connected.

Preferably, a first elastic rubber layer is fitted between the arc-shaped snap plate and the pipe;

Connection blocks are welded on both sides of the arc-shaped clamping plate;

The connecting block on the first shell and the connecting block on the second shell are fixedly connected by bolts; and the connecting block on the first shell and the connecting block on the second shell are connected by bolts. A second elastic rubber layer is provided in close contact.

Preferably, an arc-shaped fixing plate is fixedly welded to the outer wall of the vertical plate, the arc-shaped fixing plate is bent into a semi-circle, and the central axis of the arc-shaped fixing plate and the central axis of the arc-shaped clamping plate are coincident .

Preferably, a threaded knob is screwed through the arc-shaped fixing plate, and one end of the threaded knob is pressed against the outer surface of the arc-shaped clamping plate.

Preferably, an elastic rubber plate is fixedly connected to the outer surface of the arc-shaped fixing plate, one side of the elastic rubber plate is provided with an elastic rubber bump, one side of the elastic rubber bump and the lower side of the knob end of the threaded knob fit.

Preferably, the end of the threaded knob is provided with a pressure plate, and one side of the pressure plate is pressed against the outer surface of the arc-shaped clamping plate.

Preferably, connecting plates are symmetrically arranged on both sides of the curved plate, the connecting plates on the first shell and the connecting plates on the second shell are symmetrical with each other, and the connecting plates on the first shell are symmetrical with each other. It is fixedly connected with the connecting plate on the second shell by bolts;

A third elastic rubber layer is arranged between the connecting plate on the first shell and the connecting plate on the second shell.

Preferably, there are four groups of the third elastic rubber layers, wherein two groups of the third elastic rubber layers are respectively fixedly connected to one side of the two groups of connecting plates on the first shell, and the other two groups of the third The elastic rubber layers are respectively fixedly connected to one side of the two groups of connecting plates on the second shell, the surface of the third elastic rubber layer on the first shell is provided with grooves, and the third elastic rubber layer on the second shell is provided with grooves. The surface of the three elastic rubber layers is provided with a first rubber protruding strip, and one side of the first rubber protruding strip is clamped inside the groove.

Preferably, the mechanism further includes a casing seal detection mechanism; the casing seal detection mechanism includes a first detection mechanism;

The housing seal detection mechanism includes a water tank;

The water tank is provided with a gap, and the lower side of the gap can be attached to the lower surface of the pipe;

The outer wall of the water tank is fixedly connected with two sets of fixing plates, and the two sets of the fixing plates are respectively arranged on both sides of the gap.

Preferably, a baffle plate is slidably arranged between the two sets of the fixing plates, the lower side of the baffle plate can be attached to the upper surface of the pipe; one side of the baffle plate is fixedly connected with a first hook;

A first tension spring is arranged on both sides of the gap, the lower end of the first tension spring is fixedly connected to the outer surface of the side wall of the water tank, and the upper end of the first tension spring is movably hooked to the first hook.

In the present invention, a sealed cavity is formed by the first shell, the second shell and the pipeline. By detecting the air pressure change in the sealed cavity, the sealing effect of the pipeline can be detected. If the pipeline inside the sealed cavity leaks, the sealed cavity The leaked gas can be sealed twice to prevent the leaked gas from spreading to the outside world. At this time, the entire air separation plant system does not need to be stopped immediately for maintenance. The system continues to operate in a short time until the next maintenance, which saves time and cost; the sealed cavity is formed by the first shell and the second shell. When in use, the first shell and the second shell can be removed from the The opposite sides are sleeved and fixed on the pipe, which is convenient for installation and disassembly.

Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure pointed out in the description, claims and drawings.

Description of drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 shows a schematic front view of a pipeline seal detection mechanism according to an embodiment of the present invention;

FIG. 2 shows a schematic diagram of the internal structure of a pipeline seal detection mechanism according to an embodiment of the present invention;

FIG. 3 shows a schematic bottom view of the first housing part according to an embodiment of the present invention;

FIG. 4 shows a schematic side view of a vertical plate part according to an embodiment of the present invention;

Figure 5 shows a schematic side view of the structure of the arc-shaped fixing plate part according to an embodiment of the present invention;

Fig. 6 shows the partial enlarged structural schematic diagram of part A in Fig. 5 of the present invention;

FIG. 7 shows a schematic side view of the structure of the second rubber convex strip part according to an embodiment of the present invention;

FIG. 8 shows a schematic front view of the connecting plate and the third elastic rubber layer part according to an embodiment of the present invention;

FIG. 9 shows a schematic structural diagram of a side view of a groove and a first rubber protruding strip part according to an embodiment of the present invention;

FIG. 10 shows a schematic view of the internal structure of the first detection mechanism according to an embodiment of the present invention;

Fig. 11 shows a schematic side view of the notch part and the fixing plate part of the first detection mechanism according to the embodiment of the present invention;

FIG. 12 shows a schematic side view of the structure of the first detection mechanism according to an embodiment of the present invention;

FIG. 13 shows a schematic diagram of the internal structure of the first housing detection assembly according to an embodiment of the present invention;

Fig. 14 shows a partial enlarged structural schematic diagram of part B in Fig. 13 according to the present invention;

Figure 15 shows a schematic side view of the structure of the second extension spring part according to an embodiment of the present invention;

FIG. 16 shows a schematic diagram of the internal structure of the second housing detection assembly according to an embodiment of the present invention;

Fig. 17 is a schematic diagram showing a partial enlarged structure of part C in Fig. 16 according to the present invention.

In the figure: 1, pipeline; 3, first shell; 4, second shell; 5, pressure switch; 6, sealed cavity; 8, intake valve; 9, bent plate; 10, vertical plate; 11, Semicircular notch; 12. Arc-shaped snap plate; 13. First elastic rubber layer; 14. Connecting block; 15. Second elastic rubber layer; 16. Arc-shaped fixing plate; 17. Threaded knob; 19. Pressure plate; 20, elastic rubber plate; 21, elastic rubber bump; 22, connecting plate; 24, the third elastic rubber layer; 26, groove; 27, the first rubber convex strip; 28, the second rubber convex strip; 29, the first a detection mechanism; 30, an alarm; 2901, a water tank; 2902, a gap; 2903, a fixing plate; 2904, a baffle; 2909, a first tension spring; 2910, a first hook; 32. The second housing detection component; 3101, the third housing; 3102, the fourth housing; 3103, the first water chamber; 3104, the first water inlet valve; 3105, the first water outlet valve; 3109, the first card block; 3107, the first slot; 3106, the first chamfer; 3108, the first rubber ring; 3110, the second tension spring; 3111, the second hook; 3201, the fifth shell; 3202, the second water cavity 3203, the second inlet valve; 3204, the second outlet valve; 3205, the second slot; 3206, the second chamfer; 3207, the second rubber ring; 3208, the second block.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The embodiment of the present invention proposes a pipeline seal detection mechanism for an air separation plant:

As shown in FIG. 1 , the pipeline seal detection mechanism includes a first casing 3 and a second casing 4; the first casing 3 and the second casing 4 are fixedly connected by bolts, and the first casing 3 and the second casing 4 Both a shell 3 and one side of the second shell 4 can be sleeved on the surface of the pipeline 1 , and the inner surface of the first shell 3 , the inner surface of the second shell 4 and the outer surface of the pipeline 1 form a Seal the cavity (not identified in the figure). The sealed cavity is used to seal the detection gas.

Further, as shown in FIG. 2 , an intake valve 8 is provided on the first housing 3, and the intake valve 8 communicates with the sealed cavity 6; the intake valve 8 is used for gas to enter and exit the place. The sealed cavity 6 is only illustrated by the intake valve 8 being mounted on the first housing 3, but the intake valve 8 is not limited to being mounted on the first housing 3, but also Can be mounted on the second housing 4 .

Further, the first housing 3 is provided with a pressure switch 5 and an alarm 30, and the detection head of the pressure switch 5 extends inside the sealed cavity 6 for detecting the real-time air pressure inside the sealed cavity 6. , the pressure switch 5 and the alarm 30 are electrically connected, and when the real-time air pressure inside the sealed cavity 6 exceeds a preset value, the pressure switch 5 can control the alarm 30 to give an alarm. Here, only the pressure switch 5 and the alarm 30 are installed on the first housing 3 for illustration, but the pressure switch 5 and the alarm 30 are not limited to being installed on the first housing 3, and can also be installed on the second housing 4, which is not limited here.

Exemplarily, the sealed cavity 6 can be filled with high-pressure gas; the pressure of the high-pressure gas is greater than that of the gas in the pipeline 1, and when the pressure switch 5 detects that the real-time pressure of the high-pressure gas inside the sealed cavity 6 is lower than the preset pressure. When the value is set, it means that the high pressure gas enters the inside of the pipeline 1 along the air leakage of the pipeline 1, and there is a problem with the sealing of the pipeline 1. At this time, the pressure switch 5 controls the alarm 30 to give an alarm. The high-pressure gas can form a pressure difference with the gas in the pipeline 1. When the pressure of the pressure difference on the pipeline 1 is less than the pressure of the gas in the pipeline 1 on the pipeline 1, the impact of the gas in the pipeline 1 on the pipeline 1 can be reduced, reducing the Extent of leakage from pipe 1.

The gas pressure in the sealed cavity 6 can also be lower than the gas pressure in the pipeline 1, including standard atmospheric pressure, that is, no gas is charged into the sealed cavity 6, and only the air in the sealed cavity 6 is used as the detection gas. , this method is easy to operate; when the pressure switch 5 detects that the real-time air pressure inside the sealed cavity 6 is higher than the preset value, it means that the gas in the pipeline 1 enters the In the sealed cavity 6, there is a problem with the sealing of the pipeline 1, at this time, the pressure switch 5 controls the alarm 30 to give an alarm.

Further, as shown in FIG. 3 , the first housing 3 includes a set of bent plates 9 and two sets of vertical plates 10 . One side of the plate 10 is provided with semi-circular notches 11 , and the diameter of the semi-circular notches 11 is equal to the outer diameter of the pipe 1 .

Further, as shown in FIG. 4 , the first housing 3 further includes two sets of arc-shaped snap plates 12 , and the two sets of arc-like snap plates 12 are respectively fixedly connected to the outer walls of the two sets of the vertical plates 10 . The central axis of the arc-shaped clamping plate 12 coincides with the central axis of the semi-circular notch 11, and the inner wall of the arc-shaped clamping plate 12 can be completely fitted with the outer surface of the pipe 1; the arc-shaped clamping plate 12 is provided The contact area between the two sets of shells and the pipeline 1 can be increased, and the sealing effect between the two sets of shells and the pipeline 1 can be enhanced;

Further, the structures of the second casing 4 and the first casing 3 are the same and symmetrical to each other;

A first elastic rubber layer 13 is arranged between the arc-shaped snap plate 12 and the pipe 1; the sealing effect between the two sets of shells and the pipe 1 can be further improved;

Connection blocks 14 are welded on both sides of the arc-shaped clamping plate 12;

The connecting block 14 on the first shell 3 and the connecting block 14 on the second shell 4 are connected by bolts; and the connecting block 14 on the first shell 3 and the second shell 4 are connected by bolts; A second elastic rubber layer 15 is arranged between the connecting blocks 14;

The connecting block 14 and the second elastic rubber layer 15 can increase the sealing effect of the contact positions between the two sets of shells and the pipe 1 .

Preferably, as shown in FIG. 5 , in order to enhance the sealing between the first casing 3 and the second casing 4 , so that the scope of use of this mechanism can be extended to pipeline detection of other gases, the Both sides of the vertical plate 10 of the first shell 3 and the vertical plate 10 of the second shell 4 are fixedly welded with arc-shaped fixing plates 16 , the arc-shaped fixing plates 16 are bent into a semicircle, and the arc-shaped fixing plates 16 are fixed and welded. The central axis of the plate 16 coincides with the central axis of the central axis of the arc-shaped clamping plate 12 . It can be ensured that the distance between the arc-shaped fixing plate 16 and the arc-shaped clamping plate 12 is equal.

Further, a threaded knob 17 is screwed through the arc-shaped fixing plate 16, and one end of the threaded knob 17 is pressed against the outer surface of the arc-shaped clamping plate 12, and the threaded knob 17 can press the arc-shaped clamping plate 17. The connecting plate 12 makes the arc-shaped clipping plate 12 have pressure in the direction of the pipeline 1, so that the connection between the casing and the pipeline 1 is not easy to leak. Specifically, the threaded knob 17 needs to be repaired regularly, and if it is found to be loose, it needs to be tightened in time to ensure the squeezing effect of the arc-shaped clamping plate 12, thereby ensuring that the casing and the pipeline 1 are not easily leaked.

Exemplarily, in specific implementation, the arc-shaped fixing plate 16 can be replaced with a fixing block connected to the surface of the first shell 3 or the second shell 4, and the fixing block is opposite to the first shell 3 and the second shell 4. The central axis of the second housing 4 is distributed in an annular array, and each group of fixing blocks is rotatably connected with one or more groups of threaded knobs through threaded holes, which are not limited here.

Further, an elastic rubber plate 20 is fixedly connected to the outer surface of the arc-shaped fixing plate 16, the elastic rubber plate 20 is an arc-shaped plate, and an elastic rubber bump 21 is arranged on one side of the elastic rubber plate 20. The rubber bump 21 and the elastic rubber plate 20 are of a one-piece structure, and one side of the elastic rubber bump 21 is attached to the lower side of the knob end of the threaded knob 17 . The threaded knob 17 is composed of a threaded rod on the lower side and a knob end located at the upper end of the threaded rod. The end of the elastic rubber bump 21 can withstand the knob end of the threaded knob 17 and play a fixed role on the threaded knob 17 , so that the threaded knob 17 is not easy to rotate by itself, so as to ensure the squeezing effect of the threaded knob 17 on the arc-shaped clamping plate 12, and air leakage between the casing and the pipeline is not easy.

Exemplarily, the elastic rubber bumps 21 may be cylindrical or cubic.

Further, as shown in FIG. 6 , the end of the threaded knob 17 is provided with a pressure plate 19, the surface area of the lower surface of the pressure plate 19 is larger than the surface area of the lower end of the threaded knob 17, and one side of the pressure plate 19 is pressed against Fitted to the outer surface of the arc-shaped clip plate 12 . The pressing plate 19 can increase the contact area with the outer surface of the arc-shaped clamping plate 12 to increase the pressing effect.

Preferably, as shown in FIG. 7 , a plurality of groups of second rubber protruding strips 28 are provided on the side of the first elastic rubber layer 13 close to the pipe 1 , and one side of the second rubber protruding strips 28 is attached to the pipeline 1 surface.

Specifically, when the second rubber protrusions 28 are pressed against the surface of the pipe 1, the first elastic rubber layer 13 is also pressed against the surface of the pipe 1, and the second rubber protrusions are pressed against the surface of the pipe 1. The strip 28 is in a state of being squeezed and deformed. When the outer surface of the pipe 1 is uneven, if there is a small gap, the second rubber protruding strip 28 that is squeezed and deformed can supplement the unevenness of the outer surface of the pipe 1 and enhance the sealing performance.

In addition, when the first elastic rubber layer 13 is squeezed into wrinkles during installation, air leakage is likely to occur, and the second rubber protruding strip 28 can still be sealed with the pipe 1, Enhance the sealing of joints.

Preferably, as shown in FIG. 8 , connecting plates 22 are symmetrically arranged on both sides of the curved plate 9 , and the connecting plates 22 on the first casing 3 and the connecting plates 22 on the second casing 4 are mutually Symmetrical, the connecting plate 22 on the first shell 3 and the connecting plate 22 on the second shell 4 are fixedly connected by bolts;

A third elastic rubber layer 24 is provided between the connecting plate 22 on the first shell 3 and the connecting plate 22 on the second shell 4 , and the connecting plate 22 can increase the first shell 3 The area of the contact surface with the second casing 4 enhances the stability and convenience of installation, and the connecting plate 22 can enhance the sealing effect between the first casing 3 and the second casing 4 .

Further, as shown in FIG. 9 , there are four groups of the third elastic rubber layers 24 , wherein two groups of the third elastic rubber layers 24 are fixedly connected to one side of the connecting plate 22 on the first shell 3 , The other two sets of the third elastic rubber layers 24 are fixedly connected to one side of the connecting plate 22 on the second housing 4 , and grooves 26 are formed on the surface of the third elastic rubber layer 24 on the first housing 3 . The surface of the third elastic rubber layer 24 on the second casing 4 is provided with a first rubber protruding strip 27 , and one side of the first rubber protruding strip 27 is clamped inside the groove 26 . Exemplarily, the cross-sectional shapes of the grooves 26 and the first rubber protruding strips 27 are only illustrated as rectangles, which are not limited here.

The first rubber protruding strip 27 can be connected to the inside of the groove 26, which can increase the sealing effect and prevent air leakage due to the uneven contact surface between the third elastic rubber layers 24; and the first rubber is provided The protruding strips 27 and the corresponding grooves 26 facilitate the positioning between the first housing 3 and the second housing 4. During installation, the first rubber protruding strips 27 are clamped. The first casing 3 and the second casing 4 can be preliminarily positioned by being connected to the inside of the groove 26 .

The contact of the two groups of the third elastic rubber layers 24 is coated with sealant, the connection between the first shell 3 and the pipe 1 is coated with sealant, and the second shell 4 and the pipe 1 are coated with sealant. A sealant is applied to the connection of the sealed cavity 6 , which can further enhance the leakage of the high-pressure gas in the sealed cavity 6 to the outside of the first shell 3 and the second shell 4 .

When the device is in use, the first casing 3 is placed on the upper side of the pipe 1, the second casing 4 is placed on the lower side of the pipe 1, and the first elastic rubber layer is placed 13 is attached to the outer surface of the pipe 1. During installation, the first rubber protruding strip 27 is snapped into the groove 26, and the first housing 3 and the second The shell 4 is initially positioned, and then the two groups of the connecting plates 22 are fixedly connected with bolts, so that the two groups of the third elastic rubber layers 24 are pressed and fit, and then the upper and lower two groups of the connecting blocks are connected by bolts. 14 Fix the connection so that the second elastic rubber layer 15 is pressed against each other, and then apply sealant to the connection between the first shell 3 and the second shell 4, and the first shell Apply sealant to the connection between the body 3 and the pipe 1, apply sealant to the connection of the second shell 4 and the pipe 1; set the parameters of the pressure switch 5, when the pressure switch 5 When the detected pressure exceeds the predetermined value, the alarm 30 is notified to give an alarm, and the staff can make a record, which is convenient for maintenance during regular maintenance.

Preferably, as shown in FIG. 10 , in order to ensure the tightness of the sealed cavity 6 and increase the accuracy of installation, the present invention further includes a housing seal detection mechanism, and the housing seal detection mechanism includes a first detection mechanism 29 . The first casing 3 and the second casing 4 are placed inside the first detection mechanism 29 , and the side wall of the first detection mechanism 29 is sleeved on the outer surface of the pipe 1 .

The first detection mechanism 29 can detect the tightness of the sealing cavity 6 to ensure the normal operation of the pipeline sealing detection mechanism, thereby improving the accuracy of the sealing detection and preventing the damage of the pipeline sealing detection mechanism itself from affecting the sealing of the pipeline. detection accuracy.

Specifically, as shown in FIG. 11 , the first detection mechanism 29 includes a water tank 2901;

The water tank 2901 is provided with a notch 2902, the upper side of the notch 2902 is rectangular, the lower side of the notch 2902 is semicircular, and the lower side of the notch 2902 can fit on the lower surface of the pipe 1;

Two sets of fixing plates 2903 are fixedly connected to the outer wall of the water tank 2901, the fixing plates 2903 are L-shaped fixing plates, and the fixing plates 2903 on both sides are respectively arranged on both sides of the gap 2902;

Further, as shown in FIG. 12 , a baffle plate 2904 is slidably disposed between the two sets of the fixing plates 2903 , the lower side of the baffle plate 2904 is semicircular, and the lower side of the baffle plate 2904 can be attached to the The upper surface of the pipe 1; a first hook 2910 is fixedly connected to one side of the baffle plate 2904;

Both sides of the gap 2902 are provided with a first tension spring 2909, the lower end of the first tension spring 2909 is fixedly connected to the outer surface of the side wall of the water tank 2901, and the upper end of the first tension spring 2909 is movably hooked to the first hook 2910.

The first tension spring 2909 can pull the baffle plate 2904 downward, so that the lower side of the baffle plate 2904 and the upper surface of the pipe 1 are in close contact.

Preferably, in order to seal the connection between the baffle 2904 and the fixing plate 2903, a fourth elastic rubber layer is fixedly bonded to one side of the baffle 2904, and one side of the fourth elastic rubber layer is pressed It is closely attached to the side wall of the water tank 2901 .

Preferably, in order to avoid water seepage at the joint of the baffle 2904 and the pipe 1, an elastic rubber strip is arranged between the baffle 2904 and the pipe 1, in order to make the gap 2902 and the pipe 1 The fitting place is not easy to seep water, and an elastic rubber strip is arranged between the gap 2902 and the pipe 1.

When testing, remove the upper end of the first tension spring 2909 from the first hook 2910, pull up the baffle 2904 to remove the baffle 2904 from between the fixing plates 2903, and place the water tank 2901 on the side of the pipe 1. Right below, push the water tank 2901 upwards to place the pipe 1 in the notch 2902, and finally make the lower surface of the pipe 1 fit with the lower side of the notch 2902, then slide the baffle 2904 into the fixing plate 2903, and place the first The tension spring 2909 is hooked on the first hook 2910, so that the lower surface of the baffle 2904 is attached to the upper surface of the pipeline 1, and water is poured into the water tank 2901, and the water surface can exceed the upper surface of the pipeline 1. If air bubbles appear, it means that the sealing performance of the first casing 3 and the second casing 4 is good; After installation and detection, the first detection mechanism 29 can be removed by reverse operation.

The installation of the first detection mechanism 29 is realized through the baffle 2904. A first tension spring 2909 is provided on the box body 2901. The first tension spring 2909 can pull down the baffle 2904, so that the baffle 2904 The lower side is in close contact with the upper surface of the pipe 1 to enhance the sealing effect.

The first detection mechanism 29 can detect the tightness of the sealing cavity 6 to ensure the normal operation of the pipeline sealing detection mechanism, thereby improving the accuracy of the pipeline sealing detection and preventing the damage of the pipeline sealing detection mechanism itself from affecting the pipeline sealing detection. of accuracy.

The housing seal detection mechanism for detecting the tightness of the sealed cavity 6 can also adopt other forms. The above only takes the first detection mechanism 29 as an example to illustrate, but is not limited to this structure. For example, the following structures can also be used:

The casing seal detection mechanism further includes a second detection mechanism; the second detection mechanism includes a first casing detection assembly 31 and a second casing detection assembly 32;

Further, as shown in FIG. 13 , the first housing detection assembly 31 includes a third housing 3101 and a fourth housing 3102, and the third housing 3101 and the fourth housing 3102 are symmetrical with each other, so One side of the third shell 3101 and the fourth shell 3102 can be clipped on the surface of the pipe 1, and the other side of the third shell 3101 and the fourth shell 3102 can be sleeved on the arc clip joint the outer surface of the plate 12 . The inner wall of the third housing 3101 , the inner wall of the fourth housing 3102 , the outer wall of the pipe 1 and the surface of the arc-shaped clamping plate 12 can constitute the first water cavity 3103 . The connection between the arc-shaped snap plate 12 and the pipe 1 is located inside the first water cavity 3103 . When the water in the first water chamber 3103 bubbles, it means that the arc-shaped clip plate 12 is leaking air. In order to clearly see the water bubbles in the first water cavity 3103, the third casing 3101 and the fourth casing 3102 are made of transparent materials.

Further, a first water inlet valve 3104 is provided on the outside of the third housing 3101, the first water inlet valve 3104 is communicated with the first water chamber 3103, and the first water inlet valve 3104 is used to send the water to the first water chamber 3103. Internal water injection; a first water outlet valve 3105 is provided on the outer side of the fourth housing 3102, the first water outlet valve 3105 is communicated with the first water cavity 3103, and the first water outlet valve 3105 is used for the first water cavity 3103. the water is drained.

Further, first chamfers 3106 are defined on the inner wall edges of the third casing 3101 and the fourth casing 3102 ; The inside of the slot 3107 is convenient for the third casing 3101 and the fourth casing 3102 to be clamped with the arc-shaped clamping plate 12 .

Specifically, as shown in FIG. 14 , the outer surface of the arc-shaped clamping plate 12 is fixedly connected with two sets of first clamping blocks 3109 , and the inner walls of the third casing 3101 and the fourth casing 3102 are provided with and A first card slot 3107 matched with a card block 3109, the first card block 3109 is clipped inside the first card slot 3107, and the third casing 3101 and the fourth casing 3102 can be clipped in the arc-shaped The outer surface of the fixing plate 12 . Specifically, the bottom side of the first card slot 3107 is provided with a sealing strip, which can seal the first card block 3109 and the first card slot 3107 .

Further, a first rubber ring 3108 is fixedly connected inside the third housing 3101 and the fourth housing 3102, and the cross section of the first rubber ring 3108 is triangular or wedge-shaped. The first rubber ring 3108 can prevent the first rubber ring 3108 from being damaged by the arc-shaped clamping plate 12 when it is clamped with the arc-shaped clamping plate 12, thereby affecting the sealing.

Further, as shown in FIG. 15 , a second tension spring 3110 is provided outside the third housing 3101 , a second hook 3111 is fixedly connected to the outside of the fourth housing 3102 , and the second tension spring 3110 One end can be hung on the second hook 3111 . The third casing 3101 and the fourth casing 3102 can be tightly attached by the pulling force of the second tension spring 3110 to prevent water leakage at the connection between the third casing 3101 and the fourth casing 3102 . It should be noted here that even if water leaks between the third housing 3101 and the fourth housing 3102, it does not affect the use of the first housing detection component 31, because the first housing detection component 31 only detects for a short time, and Not continuous testing.

Further, a rubber layer is provided at the connection between the third shell 3101 and the fourth shell 3102, which can enhance the sealing between the third shell 3101 and the fourth shell 3102;

Further, a rubber layer is arranged between the third casing 3101 and the pipe 1 to enhance the sealing between the third casing 3101 and the pipe 1 , and a rubber layer is arranged between the fourth casing 3102 and the pipe 1 . The rubber layer can enhance the sealing between the fourth casing 3102 and the pipe 1 .

Further, as shown in FIGS. 16 and 17 , the second housing detection assembly 32 includes a fifth housing 3201 , and the fifth housing 3201 can be clamped on one side of the connection board 12 . The two sets of connecting plates 22 and the inner wall of the fifth housing 3201 form a second water cavity 3202 , the second water cavity 3202 can be used to store liquid for detection, and the connection between the two sets of connecting plates 22 is located in the second water cavity 3202 . When the water in the second water chamber 3202 bubbles, it means that the connection of the connecting plate 22 is leaking air. In order to clearly see the water bubbles in the second water cavity 3202, the fifth casing 3201 is made of transparent material.

Further, a second water inlet valve 3203 is provided on the outside of the fifth housing 3201, the second water inlet valve 3203 is connected to the second water cavity 3202, and the second water inlet valve 3203 is used to supply the second water Water is injected into the cavity 3202; a second water outlet valve 3204 is provided on the outside of the fifth housing 3201, the second water outlet valve 3204 is communicated with the second water chamber 3202, and the second water outlet valve 3204 can connect the water in the second water chamber 3202 Water is released.

A second clamping block 3208 is fixedly connected to one side of the two sets of connecting plates 22 away from each other; the inner wall of the fifth housing 3201 is provided with a second clamping slot 3205 matching the inner wall of the second clamping block 3208, which can be used to connect the second clamping block 3208. The five casings 3201 are clamped on one side of the connecting plate 22 . Specifically, the bottom side of the second card slot 3205 is provided with a sealing strip, which can seal the second card block 3208 and the second card slot 3205 .

Further, the edge of the inner wall of the fifth shell 3201 is provided with a second chamfer 3206. When the fifth shell 3201 and the connecting plate 22 are clamped, the second block 3208 can be clamped along the second chamfer 3206. into the second card slot 3205 for easy card connection.

Further, a second rubber ring 3207 is fixedly connected to the inner wall of the fifth housing 3201. The cross-section of the second rubber ring 3207 is triangular or wedge-shaped. Compared with the rectangular cross-section, the triangular or wedge-shaped second rubber ring 3207 It can prevent the second rubber ring 3207 from being damaged by the connecting plate 22 when it is clamped with the connecting plate 22, thereby affecting the sealing.

Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these Modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. The utility model provides a pipeline seal detection mechanism for air separation plant, includes first casing (3) and second casing (4), its characterized in that: the first shell (3) comprises a group of bent plates (9), two groups of vertical plates (10) and two groups of arc-shaped clamping and connecting plates (12);

the two groups of vertical plates (10) are symmetrically arranged on two sides of the bent plate (9), semicircular notches (11) are formed in the edges of the vertical plates (10), the diameter of each semicircular notch (11) is equal to the outer diameter of the pipeline (1), and the semicircular notches (11) can be completely attached to the outer surface of the pipeline (1);

arc-shaped clamping plates (12) are fixedly connected to one sides, far away from the bent plates (9), of the two groups of vertical plates (10), the central axes of the arc-shaped clamping plates (12) are overlapped with the central axes of the semicircular notches (11), and the inner walls of the arc-shaped clamping plates (12) can be completely attached to the outer surface of the pipeline (1);

the second shell (4) and the first shell (3) have the same structure and are symmetrical to each other;

the bent plate (9) on the first shell (3) is fixedly connected with the bent plate (9) on the second shell (4) through bolts; a sealed cavity (6) can be formed between the bent plate (9) on the first shell (3), the vertical plate (10) on the first shell (3), the bent plate (9) on the second shell (4), the vertical plate (10) on the second shell (4) and the outer surface of the pipeline (1);

an air inlet valve (8) is arranged on the first shell (3), and the air inlet valve (8) is communicated with the sealed cavity (6);

be provided with pressure switch (5) and siren (30) on first casing (3), pressure switch (5)'s detecting head extends inside sealed cavity (6), pressure switch (5) and siren (30) electric connection.

2. The pipe seal detection mechanism for an air separation plant according to claim 1, characterized in that: a first elastic rubber layer (13) is attached between the arc-shaped clamping plate (12) and the pipeline (1);

connecting blocks (14) are welded on two sides of the arc-shaped clamping plate (12);

the connecting block (14) on the first shell (3) is fixedly connected with the connecting block (14) on the second shell (4) through bolts; and a second elastic rubber layer (15) is attached between the connecting block (14) on the first shell (3) and the connecting block (14) on the second shell (4).

3. The pipe seal detection mechanism for an air separation plant according to claim 2, characterized in that: the outer wall of the vertical plate (10) is fixedly welded with an arc-shaped fixing plate (16), the arc-shaped fixing plate (16) is bent into a semicircle, and the central axis of the arc-shaped fixing plate (16) is superposed with the central axis of the arc-shaped clamping plate (12).

4. The pipe seal detection mechanism for an air separation plant according to claim 3, characterized in that: the arc-shaped fixing plate (16) is connected with a threaded knob (17) in a penetrating and screwed mode, and one end of the threaded knob (17) is tightly pressed and attached to the outer surface of the arc-shaped clamping plate (12).

5. The pipe seal detection mechanism for an air separation plant according to claim 4, characterized in that: the outer fixed surface of arc fixed plate (16) is connected with elasticity rubber slab (20), elasticity rubber slab (20) one side is provided with elasticity rubber lug (21), elasticity rubber lug (21) one side with the laminating of the knob end downside of screw knob (17).

6. The pipe seal detection mechanism for an air separation plant according to claim 4 or 5, characterized in that: the end part of the threaded knob (17) is provided with a pressing plate (19), and one side of the pressing plate (19) is tightly pressed and attached to the outer surface of the arc-shaped clamping plate (12).

7. The pipe seal detection mechanism for an air separation plant according to claim 1, characterized in that: connecting plates (22) are symmetrically arranged on two sides of the bent plate (9), the connecting plate (22) on the first shell (3) and the connecting plate (22) on the second shell (4) are symmetrical, and the connecting plate (22) on the first shell (3) and the connecting plate (22) on the second shell (4) are fixedly connected through bolts;

and a third elastic rubber layer (24) is arranged between the connecting plate (22) on the first shell (3) and the connecting plate (22) on the second shell (4).

8. The pipe seal detection mechanism for an air separation plant according to claim 7, characterized in that: the third elastic rubber layers (24) are provided with four groups, wherein two groups of the third elastic rubber layers (24) are respectively and fixedly connected to one sides of two groups of connecting plates (22) on the first shell (3), the other two groups of the third elastic rubber layers (24) are respectively and fixedly connected to one sides of two groups of connecting plates (22) on the second shell (4), a groove (26) is formed in the surface of the third elastic rubber layer (24) on the first shell (3), a first rubber convex strip (27) is arranged on the surface of the third elastic rubber layer (24) on the second shell (4), and one side of the first rubber convex strip (27) is clamped inside the groove (26).

9. The pipe seal detection mechanism for an air separation plant according to claim 1, characterized in that: the mechanism further comprises a housing seal detection mechanism; the housing seal detection mechanism comprises a first detection mechanism (29);

the first detection mechanism (29) comprises a water tank (2901);

a notch (2902) is formed in the water tank (2901), and the lower side of the notch (2902) can be attached to the lower surface of the pipeline (1);

two sets of fixed plates (2903) are fixedly connected to the outer wall of the water tank (2901), and the two sets of fixed plates (2903) are respectively arranged on two sides of the notch (2902).

10. The pipe seal detection mechanism for an air separation plant according to claim 9, characterized in that: a baffle plate (2904) is arranged between the two groups of fixing plates (2903) in a sliding way, and the lower side of the baffle plate (2904) can be attached to the upper surface of the pipeline (1); one side of the baffle plate (2904) is fixedly connected with a first hook (2910);

first extension springs (2909) are arranged on two sides of the notch (2902), the lower ends of the first extension springs (2909) are fixedly connected to the outer surface of the side wall of the water tank (2901), and the upper ends of the first extension springs (2909) are movably hung on first hooks (2910).

Images