Protection and alarm device for leakage at welding position of concentrated sulfuric acid transfer pipeline of sewage plant

Abstract

The utility model discloses a sewage plant concentrated sulfuric acid transfer pipeline welding position leakage protection alarm device which comprises a protection sleeve box, the top of the protection sleeve box is movably connected with a box cover, the bottom of the protection sleeve box is fixedly communicated with a medicine storage box, and the bottom of the left side of the medicine storage box is fixedly communicated with an emptying pipe. A sleeve is fixedly connected to the bottom of an inner cavity of the medicine storage box, a temperature control sensor is installed in an inner cavity of the sleeve, the right side of the temperature control sensor penetrates to the outer side of the sleeve and is fixedly connected with an alarm, and a water adding pipe fixedly communicates with the left side of the protection sleeve box; the right side of the protective sleeve box fixedly communicates with a one-way exhaust valve and an observation pipe. According to the leakage protection and alarm device for the welding position of the concentrated sulfuric acid transfer pipeline of the sewage plant, acid leakage can be found and treated in time, and concentrated sulfuric acid leaked from the pipeline can be effectively prevented from making direct contact with a human body or causing safety production in a plant area.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewage treatment, and particularly relates to a leakage protection alarm device for welding parts of concentrated sulfuric acid transfer pipelines in sewage plants. Background Art

[0002] Sewage treatment plants that use Fenton and Fenton-like processes as their core need to use concentrated sulfuric acid, and the amount used is large. During the operation of the sewage plant, concentrated sulfuric acid generally needs to be transported from the storage tank to the reactor by pipeline. Stainless steel pipes are currently commonly used. Due to the long transportation distance and the need to turn at turns, welding technology is used during the installation of stainless steel pipes, and welds will exist at the welding points of the pipes.

[0003] Although the welds are quality inspected during the welding process, the welds are still the areas where stainless steel pipes are most prone to cracks and acid leakage. Concentrated sulfuric acid is highly corrosive and water-absorbing. Once a concentrated sulfuric acid transport pipeline leaks, it can cause serious harm to the human body when it comes into contact with the human body. Leakage of concentrated sulfuric acid can easily cause fires and other safety accidents.

[0004] The above problems are manifested in that concentrated sulfuric acid easily leaks from the welds, and protection and timely alarm cannot be provided after leakage, resulting in concentrated sulfuric acid dripping and contacting the human body, causing serious injuries, and easily causing safety accidents such as fire. Utility Model Content

[0005] The utility model aims to address the deficiencies in the prior art and propose a leakage protection alarm device for the welding part of a concentrated sulfuric acid transfer pipeline in a sewage plant, so as to solve the problem that concentrated sulfuric acid cannot be collected and an alarm is issued after leakage at the welding part of the existing transfer pipeline, resulting in concentrated sulfuric acid dripping and contacting the human body to cause harm, and personnel cannot promptly repair the leakage.

[0006] The technical purpose of this utility model is achieved through the following technical solutions:

[0007] A leakage protection alarm device for welding points of concentrated sulfuric acid transfer pipelines in a sewage treatment plant comprises a protection sleeve box, the top of the protection sleeve box is movably connected with a box cover, the bottom of the protection sleeve box is fixedly connected with a medicine storage box, the bottom of the left side of the medicine storage box box is fixedly connected with an emptying pipe, the bottom of the inner cavity of the medicine storage box is fixedly connected with a sleeve, the inner cavity of the sleeve is equipped with a temperature control sensor, the right side of the temperature control sensor penetrates to the outside of the sleeve and is fixedly connected with an alarm, the left side of the protection sleeve box is fixedly connected with a water supply pipe, and the right side of the protection sleeve box is respectively fixedly connected with a one-way exhaust valve and an observation tube.

[0008] Preferably, a rotary hinge is fixedly connected to the top of the rear side of the protective cover box, and a top of the front side of the rotary hinge is fixedly connected to the box cover.

[0009] Preferably, a mating fastener is fixedly connected between the top of the front side of the protective cover and the box cover, and airtight seals are glued to the bottom of the left and right sides of the box cover.

[0010] Preferably, a small lighting lamp is connected to the front side of the protective cover box through bolts, and a button switch is connected to the left side of the front side of the protective cover box through bolts.

[0011] Preferably, the right side of the sleeve passes through the right side of the medicine storage box, and the output end of the temperature control sensor is electrically connected to the alarm.

[0012] Preferably, bolt caps are installed on the outer sides of the drain pipe, the water filling pipe and the observation tube, and the inner cavity of the medicine storage box is filled with distilled water.

[0013] Preferably, the medicine storage box is made of polytetrafluoroethylene and has a depth of 100-150 mm, and the sleeve is made of 316L stainless steel.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides a leakage protection alarm device for the welding part of the concentrated sulfuric acid transfer pipeline of a sewage plant. The device can timely discover and deal with acid leakage after it occurs, and can effectively prevent the concentrated sulfuric acid leaking from the pipeline from directly contacting the human body or causing production safety problems in the plant.

[0016] The device has simple installation and disassembly steps and a fast installation process. It is suitable for use at welds or acid-leaking locations of pipelines of various specifications and can be customized according to pipelines of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the structure of the utility model.

[0018] Figure 2 It is a top view of the structure of the utility model.

[0019] Figure 3 It is a right view of the structure of the utility model.

[0020] In the above drawings: 1. Protective box; 2. Rotating hinge; 3. Matching fasteners; 4. Sealed seal; 5. Medicine storage box; 6. Distilled water; 7. Drain pipe; 8. Water filling pipe; 9. One-way exhaust valve; 10. Observation tube; 11. Temperature control sensor; 12. Sleeve; 13. Alarm; 14. Push button switch; 15. Miniature lighting; 16. Box cover. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] As a preferred embodiment of the present invention, Figure 1-Figure 3 As shown, the present embodiment provides a leakage protection alarm device for the welding part of the concentrated sulfuric acid transfer pipeline of a sewage treatment plant, comprising a protection sleeve 1, the top of the protection sleeve 1 is movably connected with a box cover 16, the bottom of the protection sleeve 1 is fixedly connected with a medicine storage box 5, the bottom of the left side of the medicine storage box 5 is fixedly connected with an emptying pipe 7, the bottom of the inner cavity of the medicine storage box 5 is fixedly connected with a sleeve 12, the inner cavity of the sleeve 12 is installed with a temperature control sensor 11, the right side of the temperature control sensor 11 passes through the outside of the sleeve 12 and is fixedly connected with an alarm 13, the left side of the protection sleeve 1 is fixedly connected with a water supply pipe 8, and the right side of the protection sleeve 1 is respectively fixedly connected with a one-way exhaust valve 9 and an observation tube 10.

[0023] When the above embodiment is implemented, the device is installed at the weld of the concentrated sulfuric acid pipeline, the weld is placed in the middle position of the device, distilled water 6 is injected into the medicine storage box 5 through the water supply pipe 8, the liquid level is controlled at 200-400mm, a temperature control sensor 11 and an alarm 13 are set, and the alarm temperature is set to 40 degrees Celsius. When the weld leaks, concentrated sulfuric acid drips into the medicine storage box 5 and reacts with water. When the reaction releases heat and causes the water temperature to rise by more than 40 degrees Celsius, it is transmitted to the alarm 13 through the temperature control sensor 11, and the alarm 13 transmits information through sound. The protective cover 1 is made of polytetrafluoroethylene and has a thickness of 1mm. The one-way exhaust valve 9 can discharge the air in the protective cover 1 to the outside, and the external air cannot enter the inside.

[0024] In some embodiments, Figure 2-Figure 3 As shown, a rotating hinge 2 is fixedly connected to the top of the rear side of the protective sleeve 1, the top of the front side of the rotating hinge 2 is fixedly connected to the box cover 16, a mating fastener 3 is fixedly connected between the top of the front side of the protective sleeve 1 and the box cover 16, and the bottoms of the left and right sides of the box cover 16 are glued with sealed seals 4.

[0025] In order to facilitate the installation of the device on the surface of the conveying pipeline, the present embodiment installs the conveying pipeline between the protective sleeve box 1 and the box cover 16, then covers the box cover 16 and fastens the matching fasteners 3 to fix the device on the pipeline. When the leakage alarm 13 sounds an alarm, the observation tube 10 is used to observe whether there is leakage at the pipeline weld to ensure the accuracy of the information. If leakage is found at the weld, it is determined whether the acid inlet valve can be closed immediately. Combined with the actual on-site operation, if it is determined that the conditions for closing the acid inlet valve are met, the valve is closed to discharge the concentrated sulfuric acid in the pipeline. If it is determined that the conditions for closing the acid inlet valve are not met, a temporary acid storage barrel is set under the device, and the exposed concentrated sulfuric acid is discharged to the temporary acid storage barrel through the emptying port of the device. The acid inlet valve is closed when the conditions for closing the acid inlet valve are met. The airtight seal 4 can improve the sealing between the box cover 16 and the conveying pipeline, making the contact more firm.

[0026] In some embodiments, Figure 1-Figure 2 As shown, the front side of the protective cover 1 is connected with a miniature lighting lamp 15 by bolts, the left side of the front side of the protective cover 1 is connected with a button switch 14 by bolts, the right side of the sleeve 12 penetrates to the right side of the medicine storage box 5, the output end of the temperature control sensor 11 is electrically connected to the alarm 13, the outer sides of the drain pipe 7, the water filling pipe 8 and the observation tube 10 are all installed with bolt caps, and the inner cavity of the medicine storage box 5 is filled with distilled water 6.

[0027] This embodiment mainly considers the leakage at the weld of the pipeline in the protective sleeve box 1. When the internal light is dim and cannot be seen clearly, the micro-light 15 can be turned on by the button switch 14 to illuminate the weld. This makes it convenient for personnel to observe the weld and improves the accuracy of judgment. The sleeve 12 is made of 316L stainless steel and can protect the temperature control sensor 11. The bolt cap is made of polytetrafluoroethylene to play a sealing role.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A leakage protection alarm device for a concentrated sulfuric acid transfer pipeline in a sewage treatment plant at a welding point, comprising a protection box (1), characterized in that: The top of the protective sleeve (1) is movably connected to a box cover (16), the bottom of the protective sleeve (1) is fixedly connected to a medicine storage box (5), the bottom of the left side of the medicine storage box (5) is fixedly connected to an exhaust pipe (7), the bottom of the inner cavity of the medicine storage box (5) is fixedly connected to a sleeve (12), the inner cavity of the sleeve (12) is equipped with a temperature control sensor (11), the right side of the temperature control sensor (11) penetrates to the outside of the sleeve (12) and is fixedly connected to an alarm (13), the left side of the protective sleeve (1) is fixedly connected to a water supply pipe (8), and the right side of the protective sleeve (1) is respectively fixedly connected to a one-way exhaust valve (9) and an observation tube (10).

2. The leakage protection alarm device for welding of concentrated sulfuric acid transport pipeline in sewage treatment plant according to claim 1 is characterized by: The top of the rear side of the protective sleeve box (1) is fixedly connected to a rotary hinge (2), and the top of the front side of the rotary hinge (2) is fixedly connected to the box cover (16).

3. The leakage protection alarm device for welding of concentrated sulfuric acid transport pipeline in sewage treatment plant according to claim 1 is characterized by: A mating fastener (3) is fixedly connected between the top of the front side of the protective sleeve box (1) and the box cover (16), and sealing strips (4) are glued to the bottoms of the left and right sides of the box cover (16).

4. The leakage protection alarm device for welding of concentrated sulfuric acid transport pipeline in sewage treatment plant according to claim 1 is characterized by: A miniature lighting lamp (15) is connected to the front side of the protective sleeve (1) via bolts, and a button switch (14) is connected to the left side of the front side of the protective sleeve (1) via bolts.

5. The leakage protection alarm device for welding of concentrated sulfuric acid transport pipeline in sewage treatment plant according to claim 1 is characterized by: The right side of the sleeve (12) penetrates to the right side of the medicine storage box (5), and the output end of the temperature control sensor (11) is electrically connected to the alarm (13).

6. The leakage protection alarm device for welding of concentrated sulfuric acid transport pipeline in sewage treatment plant according to claim 1 is characterized by: Bolt caps are installed on the outsides of the drain pipe (7), the water filling pipe (8) and the observation tube (10), and the inner cavity of the medicine storage box (5) is filled with distilled water (6).

7. The leakage protection alarm device for welding of concentrated sulfuric acid transport pipeline in sewage treatment plant according to claim 1 is characterized by: The medicine storage box (5) is made of polytetrafluoroethylene and has a depth of 100-150 mm, and the sleeve (12) is made of 316L stainless steel.

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