A plant for the production of cementitious products

Abstract

This utility model relates to a leak detection device for admixture pipelines in mixing plants, and pertains to the field of pipeline safety protection technology. The utility model includes a first and second horizontal pipe section connected by a bend. The connection points between the bend and both the first and second pipe sections are located within a detection box. The bottom of the detection box is funnel-shaped, and its bottom end is connected to a detection pipe communicating with the outside of the detection box via a detection valve. A liquid level sensor is installed inside the detection pipe, positioned above the detection valve. A first damping ring and a second damping ring are respectively installed between the detection box and the first and second pipe sections. The detection box is equipped with an inspection door. This utility model uses a detection box located outside the bend. A liquid level sensor installed on the drain pipe at the bottom of the detection box can detect whether a leak has occurred in the bend and control the first and second valves to close, thereby reducing leakage.

Description

Technical Field

[0001] This utility model relates to a leak detection device for admixture pipelines in mixing plants, and falls under the field of pipeline safety protection technology. Background Technology

[0002] When a concrete mixing plant is in operation, a fixed amount of admixtures and materials need to be added to the mixing system for mixing. Admixtures need to be transported through pipelines. Since some admixtures contain components such as nitrites, crystallization is prone to occur when the transport temperature is below 15°C. During the transport process, the flow rate slows down at bends in the pipeline, causing the crystals to settle. It is necessary to splice bends at the bends in the admixture pipeline to facilitate the cleaning of the settled material. However, the pressure on the bends when transporting admixtures is several times that of other parts, and the admixtures will churn and form eddies at this location, further aggravating the impact on this part and making it prone to leakage. Currently used intelligent mixing plants have a high degree of automation and are unattended, so it is not easy to detect leaks. Once a leak occurs, it will affect the quality of the concrete and cause pollution. Utility Model Content

[0003] The purpose of this invention is to design a leakage detection device for additive pipelines in mixing plants that can detect leaks in bends.

[0004] This utility model includes a first pipe section and a second pipe section in a horizontal direction. The first pipe section and the second pipe section are connected by a bend. The connection points of the bend to the first pipe section and the second pipe section are all located inside the detection box. The bottom of the detection box is funnel-shaped, and its bottom end is connected to a detection pipe that communicates with the outside of the detection box through a detection valve. A liquid level sensor is installed inside the detection pipe, and the liquid level sensor is located above the detection valve. A first damping ring and a second damping ring are respectively installed between the detection box and the first pipe section and the second pipe section. The detection box is provided with an inspection door.

[0005] Furthermore, the inner surface of the second damping ring is provided with a guide groove along its circumference to allow the upper and lower surfaces to communicate.

[0006] Furthermore, a flushing pipe communicating with the second pipe section is provided, and a flushing valve is provided on the flushing pipe, with its outer end connected to a water pump; a first valve is provided on the first pipe section, and a drain pipe with a drain valve is provided on the first pipe section between the first valve and the bend.

[0007] Furthermore, a support member that mates with the surface of the bend is provided between the protruding portion of the bend and the housing. This designed support member supports the bend, reduces swaying during impacts, and improves its stability.

[0008] Furthermore, the support member is installed on the access door. The access door designed as described above can prevent the support member from obstructing the disassembly of the bend.

[0009] Furthermore, the inspection door includes a front panel corresponding to one side of the bend and a side panel integral with the front panel and adjacent to the protruding part of the bend. The vertical edge of the front panel or the side panel is connected to the inspection box via a hinge.

[0010] Furthermore, the support consists of a front support, a middle support, and a rear support arranged vertically, with gaps between adjacent support members. This design allows the support to guide the flow of liquid within the detection chamber 11, preventing obstruction.

[0011] This invention features a detection box installed outside the bend. A liquid level sensor installed on the drain pipe at the bottom of the detection box can detect whether there is a leak in the bend and control the first and second valves to close, thereby reducing leakage. A support component matching the shape of the bend is installed on the left side of the detection box, which can provide multi-faceted support for the bend, reduce the shaking that occurs when the bend is impacted, and improve the stability of the bend. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present utility model; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 for Figure 1 A 3D view of the central testing box section; Figure 4 for Figure 3 A top view of the detection gate in the open state; Figure 5 for Figure 1 Left view of the detection gate section; Figure 6 for Figure 1 Top view of the second damping ring; The components are: 1. First pipe section, 2. Second pipe section, 3. Bend, 4. First valve, 5. Second valve, 6. Flushing pipe, 7. Flushing valve, 8. Water pump, 9. Drain pipe, 10. Drain valve, 11. Detection box, 12. Detection pipe, 13. Detection valve, 14. Liquid level sensor, 15. First shock absorber ring, 16. Second shock absorber ring, 17. Guide channel, 18. Inspection door, 19. Hinge, 20. Front support, 21. Middle support, 22. Rear support, 23. Clamp, 24. Pin. Detailed Implementation

[0013] by Figure 1 Define the up, down, left, right, front, and back directions in this embodiment.

[0014] As shown in the figure, this embodiment includes a first pipe section 1 arranged horizontally, and a second pipe section 2 arranged vertically on the right side of the first pipe section 1. The right end of the first pipe section 1 and the lower end of the second pipe section 2 are connected by a bend 3. A first valve 4 is provided on the right side of the first pipe section 1. A drain pipe 9 connected to the first pipe section 1 is provided on the first pipe section 1 between the first valve 4 and the bend 3. A drain valve 10 is provided on the drain pipe 9 to control its opening and closing. A second valve 5 is provided on the upper part of the second pipe section 2. A flushing pipe 6 connected to the second pipe section 2 is provided below the second valve 5. A flushing valve 7 is provided on the flushing pipe 6 to control its opening and closing. A water pump 8 is provided on the outer left side of the flushing pipe 6 and is connected to it. When in use, starting the water pump 8 can flush part of the inner wall of the first and second pipe sections and the bend 3. The flushed water is discharged through the drain pipe 9.

[0015] A clamp 23 is provided on the outer periphery of the connection point between the bend 3 and the first pipe section and the second pipe section 2 to reinforce the connection point at both ends of the bend 3; in this embodiment, one end of the mounting bolts of the two clamps 23 faces forward, which is convenient for disassembly and assembly.

[0016] A detection box 11 is installed around the outer periphery of the bend 3. The connection points between the bend 3 and the first pipe section 1 and the second pipe section 2 are all located inside the detection box 11. Through holes are opened on the upper and left sides of the detection box 11, through which the first and second pipe sections pass into the detection box 11. The bottom of the detection box 11 is a four-sided pyramidal bucket, and a detection tube 12 is installed at its bottom end. The detection tube 12 is fixedly connected to the bottom of the detection box 11, connecting the inner cavity of the detection box 11 to the outside. A detection valve 13 is installed on the detection tube 12 to control its opening and closing. A liquid level sensor 14 is installed inside the detection tube 12. The liquid level sensor 14 is located above the detection valve 13, and its sensing connector extends into the detection tube 12 to determine whether there is liquid on the detection valve 13.

[0017] A first damping ring 15 is installed between the inspection box 11 and the first pipe section 1. The outer surface of the first damping ring 15 is stepped and is bonded to the left plate of the inspection box 11. It can dampen vibration when the first pipe section 1 is transporting additives, reducing the possibility of loosening and leakage at the connection point due to vibration. A second damping ring 16 is installed between the inspection box 11 and the second pipe section 2. The outer surface of the second damping ring 16 is stepped and is bonded to the upper plate of the inspection box 11. A set of guide grooves 17 are formed along the circumference of the inner surface of the second damping ring 16. Each guide groove 17 penetrates the second damping ring 16, making the upper and lower surfaces of the second damping ring 16 connected. In use, it can dampen vibration of the second pipe section 2. When a leak occurs on the second pipe section 2, the leaked additive can flow into the inspection box 11 along the second pipe section 2 through the guide grooves 17.

[0018] In this embodiment, the first valve 4, the second valve 5, the flushing valve 7, the drain valve 10, and the detection valve 13 are all solenoid valves and are electrically connected to the host computer, which can remotely control the opening and closing of each valve through the host computer.

[0019] Inspection doors 18 are provided on the front and right sides of the inspection box 11. The inspection door 18 includes a front plate corresponding to the front side of the bend 3 and a side plate integral with the front plate and adjacent to the protruding part on the right side of the bend 3. In this embodiment, the vertical edge of the front plate of the inspection door 18 is connected to the inspection box 11 via a hinge 19.

[0020] A support member that mates with the surface of the bend 3 is provided between the protruding part on the right side of the bend 3 and the housing of the testing box 11. In this embodiment, the support member is set on the inner wall of the side plate of the inspection door 18. The support member includes a front support member 20, a middle support member 21, and a rear support member 22. The middle support member 21 is vertically arranged, corresponding to the centerline of the bend 3. The front support member 20 and the rear support member 22 are symmetrically arranged along the middle support member 21. There is a gap between adjacent support members, which can play a guiding role and prevent the support members from obstructing the flow of liquid in the testing box 11. Each support member has a notch on its left end that matches the shape of the bend 3. When the first pipe section 1 conveys the additive, each support member can provide multi-faceted support for the bend 3, reduce the shaking of the bend 3 when it is impacted, and improve the stability of the bend 3. A handle is fixedly installed on the right side of the side plate of the inspection door 18. A pin 24 is provided on the rear side of the handle for opening and closing the inspection door 18.

[0021] In this embodiment, the first valve 4 and the second valve 5 are opened first, while the flushing valve 7, drain valve 10, and detection valve 13 are all closed. The admixture is then transported to the left end of the first pipe section 1. During transport, if a leak occurs in the bend 3, the leaked admixture flows through the bottom of the detection box 11 into the detection pipe 12 and accumulates above the detection valve 13. When the admixture surpasses the level sensor 14, the level sensor 14 sends a detection signal to the host computer. The host computer then controls the first and second valves to close, starts the water pump 8, and opens the flushing valve 7 and drain valve 10 to flush the remaining admixture in the first and second pipe sections. After flushing, the water pump 8 is turned off, the inspection door 18 is opened, and the bend 3 is manually repaired or replaced. After repair, the detection valve 13 is opened to drain the leaked admixture from the detection pipe 12. Then, the flushing valve 7, drain valve 10, and detection valve 13 are closed, and the first valve 4 and the second valve 5 are opened to continue transporting the admixture.

Claims

1. A leak detection device for an admixture pipeline in a mixing plant, comprising a first pipe section and a second pipe section arranged horizontally, the first pipe section and the second pipe section being connected by a bend, characterized in that: The connection points between the bend and the first and second pipe sections are all located inside the testing box. The bottom of the testing box is funnel-shaped, and its bottom end is connected to a testing pipe that communicates with the outside of the testing box through a testing valve. A liquid level sensor is installed inside the testing pipe, and the liquid level sensor is located above the testing valve. A first damping ring and a second damping ring are respectively installed between the testing box and the first and second pipe sections. The testing box is equipped with an inspection door.

2. The admixture plant pipe leak detection apparatus of claim 1, wherein: The inner surface of the second damping ring is provided with a guide groove along its circumference to allow the upper and lower surfaces to communicate.

3. A ready-mix plant additive pipe leak detection apparatus according to claim 1 or 2, characterised in that: A flushing pipe is installed on the second pipe section, and a flushing valve is installed on the flushing pipe, with its outer end connected to a water pump; a first valve is installed on the first pipe section, and a drain pipe with a drain valve is installed on the first pipe section between the first valve and the bend.

4. The admixture plant pipe leak detection apparatus of claim 1 or 2, wherein: A support member that mates with the surface of the bend is provided between the protruding part of the bend and the box body.

5. The admixture plant pipe leak detection apparatus of claim 4, wherein: The aforementioned support is installed on the inspection door.

6. The admixture plant pipe leak detection apparatus of claim 5, wherein: The inspection door includes a front panel corresponding to one side of the bend and a side panel integral with the front panel and adjacent to the protruding part of the bend. The vertical edge of the front panel or the side panel is connected to the inspection box via a hinge.

7. The admixture plant pipe leak detection apparatus of claim 5, wherein: The support consists of a front support, a middle support, and a rear support arranged vertically, with gaps between adjacent support members.

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