CN221705186U - Automatic drainage device for residual water in buried pipe section - Google Patents

Abstract

The utility model relates to the technical field of steam pipelines and discloses an automatic drainage device for residual water in a buried pipeline section, which comprises a ground, a buried steam pipeline, a high-pressure air pump assembly and a drainage assembly, wherein the drainage assembly comprises a slide block base, a plurality of partition plates are annularly arranged in the slide block base in an array, limiting blocks are arranged on two sides of each partition plate, each sliding groove is meshed with each limiting block, an air bag is arranged on the inner side of each sliding block, the high-pressure air pump is matched with the drainage assembly, so that the high-pressure air pump continuously conveys high-pressure air into the buried steam pipeline, the drainage assembly is pushed to move in the pipeline by the pressure enhancement in the pipeline, meanwhile, the drainage assembly pushes the residual water in the pipeline to move, the residual water in the pipeline is automatically drained from the other drainage port, and the sliding blocks are ejected out by the inflation expansion of the air bags in the pipeline, so that the sliding blocks can be matched and tightly attached according to the internal size of the buried steam pipeline.

Description

Automatic drainage device for residual water in buried pipe section

Technical Field

The utility model relates to the technical field of steam pipelines, in particular to a device for automatically draining excess water from a buried pipe section.

Background Art

Pure steam pipelines have good mechanical properties and thermal insulation properties. Under normal circumstances, they can withstand high temperatures of 120°C. Through modification or combination with other thermal insulation materials, they can withstand high temperatures of 180°C. They are suitable for insulation projects of various cold and hot water high and low temperature pipelines. The pipeline residual water closed vacuum exhaust water absorption device is usually used for air and residual water treatment in drainage systems. Its function is to remove the air in the pipeline by vacuuming and form a negative pressure inside the pipeline, thereby achieving the purpose of water absorption and drainage. When constructing the heating pipeline network, the pipeline must be subjected to a 3.86Mpa sealing water pressure test. After the pressure test, the pressure is released to drain the residual water. For buried pipe sections, the residual water cannot be automatically drained due to the pipeline elevation.

For example, the Chinese patent "CN206512787U" discloses a device for discharging residual water from a pipe of a high-pressure cleaning vehicle, which proposes: a three-way pipe connects the drain pipe and the air pipe, a high-pressure pump is connected to the right end of the drain pipe, a first solenoid valve is arranged between the high-pressure pump and the three-way pipe, an air storage tank is connected to one end of the air pipe, a second solenoid valve is connected between the three-way pipe and the air storage tank, an electric heating wire mesh is arranged inside the upper end of the air pipe, and a humidity sensor is arranged at the outlet of the drain pipe, which is easy to operate. The control switch controls the conduction and closing of the solenoid valve, and the air storage tank and the electric heating wire mesh work together to discharge the residual water in the hot air drying pipe, thereby improving the efficiency and increasing the effectiveness of drainage, thereby improving the residual water discharge efficiency, and having strong practicality.

It can be seen from the above-mentioned device that although the above-mentioned method for high-pressure discharge of residual water in the pipeline is proposed, the applicant believes that the following defects still exist:

According to the traditional method, when steam is blown through the pipeline, some of the remaining water in the pipeline is slowly discharged by steam pressure, and then some of the remaining water is evaporated by steam heating and discharged as steam. The traditional method has the disadvantages of long time and slow speed. There is also a water hammer effect, which poses a hidden danger to the safety of the pipeline.

Utility Model Content

(I) Technical problems solved: In view of the deficiencies of the prior art, the utility model provides a device for automatically draining residual water from buried pipe sections, which has fully automated operation, reduces the risk of manual entry into the pipeline, and improves the safety of operation. At the same time, the device can maintain a stable operating state during the drainage process, reduces the possibility of failure or accidents, and can shorten the time for the heating pipe to be put into operation, and reduces the advantages of loss. It solves the problem that according to the traditional method, when steam is blown into the pipeline, part of the residual water in the pipeline is slowly discharged by steam pressure, and then part of the residual water is evaporated by steam heating and discharged as steam. The traditional method has the disadvantages of long time and slow speed, and there is also a water hammer effect, which poses a hidden danger to the safety of the pipeline.

(II) Technical solution: To achieve the above-mentioned purpose, the utility model provides the following technical solution: a device for automatically draining excess water from a buried pipe section, comprising a buried steam pipe, a high-pressure air pump assembly, and a drainage assembly, wherein the drainage assembly comprises a slider base, a plurality of partitions are arranged in a ring inside the slider base, and limit blocks are arranged on both sides of the partitions, and sliders are arranged inside every two of the partitions, and slide grooves are opened on both sides of the sliders, and the slide grooves are meshed and installed with the limit blocks, and air bags are arranged on the inner sides of a plurality of the sliders.

Preferably, an inflation port is provided above the airbag, and the inflation port is provided in a circular hole opened in the middle of the slider base.

Preferably, a sealing gasket is provided on the outer wall of the slider base, and the sealing gasket is sleeved on the outer sides of a plurality of sliders.

Preferably, an underground steam pipe is provided below the ground, and two drain outlets are provided on the ground portion extending above the buried steam pipe, and outer walls of the two drain outlets are both provided with drain flanges.

Preferably, the high-pressure air pump assembly comprises a high-pressure air pump, the high-pressure air pump is arranged above the ground, and an air outlet is arranged above the high-pressure air pump.

Preferably, an air pipe is fixedly connected to the inner wall of the air outlet, a fixed base is provided on the outer wall of the air pipe, and the fixed base is sealingly connected to the drainage flange.

Preferably, the sealing gasket is sealingly fitted to the inner wall of the buried steam pipe.

(III) Beneficial effects: Compared with the prior art, the utility model provides a device for automatically draining excess water from a buried pipe section, which has the following beneficial effects:

1. The device for automatically draining excess water from the buried pipe section achieves the goal of ejecting the slider by inflating the inside of the airbag through the cooperation between the airbag and the slider, so that the slider can be adapted and closely fitted according to the internal size of the buried steam pipe, and when passing through a bend, the elasticity of the airbag allows several sliders to be squeezed inwards and pass through the bend smoothly due to the consistent internal diameter of the pipe.

2. The device for automatically draining residual water from the buried pipe section achieves the goal of the high-pressure air pump continuously delivering high-pressure gas to the inside of the buried steam pipe through the cooperation between the high-pressure air pump and the drainage component, so that the air pressure inside the pipe is enhanced to push the drainage component to move inside the pipe. At the same time, the drainage component pushes the residual water inside the pipe to move, so that the residual water inside the pipe is automatically discharged from another drain port.

3. The device for automatically draining excess water from the buried pipe section is provided with a sealing gasket, which is sealed and fitted to the inner wall of the buried steam pipe. The sealing gasket, which is sleeved on the outside of several sliders, is usually made of high-pressure resistant and wear-resistant materials, such as rubber or polytetrafluoroethylene. The elastic material sealing gasket ensures that it can move in the pipe during the sealing process and has wear-resistant properties and can be used multiple times.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a schematic diagram of the overall structure of the utility model;

FIG2 is a schematic diagram of the cross-sectional structure of the buried steam pipeline of the utility model;

Figure 3 is a schematic diagram of the structure of the drainage assembly of the utility model;

FIG. 4 is a schematic diagram of the exploded structure of the drainage component of the present invention.

The numbers in the figure are:

1. Ground; 2. Buried steam pipe; 21. Drain outlet; 22. Drain flange; 3. High-pressure air pump assembly; 31. High-pressure air pump; 32. Air outlet; 33. Air pipe; 34. Fixed base; 4. Drain assembly; 41. Slider base; 42. Partition; 43. Limit block; 44. Air bag; 45. Inflation port; 46. Slider; 47. Slide groove; 48. Sealing gasket.

DETAILED DESCRIPTION

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.

Please refer to Figure 1, the device for automatically draining residual water from a buried pipe section includes a buried steam pipe 2, a high-pressure air pump assembly 3, and a drainage assembly 4. A buried steam pipe 2 is arranged below the ground 1, which is one of the main components of the device and is used to transport steam. Two drainage ports 21 are arranged above the buried steam pipe 2 and extend to the ground 1, which are arranged above the buried steam pipe and extend to the ground 1, and are used to drain the residual water in the pipe. Drain flanges 22 are arranged on the outer walls of the two drainage ports 21, which are arranged on the outer walls of the two drainage ports 21 and are mainly used to connect the drainage ports 21 and external drainage pipes. The drainage flanges 22 are usually made of metal materials, such as cast iron or stainless steel, and are equipped with sealing gaskets to ensure good sealing performance.

Please refer to Figure 2. The high-pressure air pump assembly 3 includes a high-pressure air pump 31, which is the core part of the assembly and is usually made of high-pressure resistant and wear-resistant materials, such as stainless steel or aluminum alloy. The main function of the high-pressure air pump is to generate high-pressure gas to provide the required gas source for the entire device. The high-pressure air pump 31 is arranged above the ground 1. An outlet 32 is arranged above the high-pressure air pump 31, which is located above the high-pressure air pump and is used to discharge the high-pressure gas. The inner wall of the outlet 32 is tightly connected to the high-pressure air pump 31 to ensure that the gas can flow out smoothly. The inner wall of the outlet 32 is fixedly connected to the air pipe 33, and the outer wall of the air pipe 33 is provided with a fixed base 34. The fixed base 34 is sealed with the drain flange 22. The fixed base and the drain flange 22 are connected by a sealing gasket or other sealing materials to ensure that the gas will not leak during the transmission process.

Please refer to Figures 2-4. The drainage component 4 includes a slider base 41. A plurality of partitions 42 are arranged in a circular shape inside the slider base 41. The base is a hollow component, and a plurality of partitions 42 are arranged in a circular shape inside the slider base 41. This design makes the slider base 41 have a certain rigidity and stability, and can carry and fix other components. Limit blocks 43 are set on both sides of the partition 42, and sliders 46 are set inside every two partitions 42. Slide grooves 47 are opened on both sides of the slider 46. The slide grooves 47 are engaged and installed with the limit blocks 43. The limit blocks 46 set on both sides of the partition 42 are used to limit the position and movement range of the slider 46 to ensure that the slider 46 slides in a specific area. Slide blocks 46 are set inside every two partitions 42. These sliders 46 can slide along the slide grooves 47 under the guidance of the limit blocks. Airbags 44 are set on the inner sides of several sliders 46. The airbags set on the inner sides of several sliders are usually made of elastic materials, such as rubber or silicone. An inflation port 45 is set above the airbag 44. The inflation port 45 is set in a circular hole opened in the middle of the slider base 41. The inflation port set above the slider and in the inflation port is used to inflate the airbag. By controlling the size and position of the inflation port, the inflation volume and pressure of the airbag can be adjusted to meet different sealing and drainage requirements. The outer wall of the slider base 41 is provided with a sealing gasket 48, which is sleeved on the outside of the sliders 46. The sealing gasket 48 is sealed and fitted to the inner wall of the buried steam pipe 2. The sealing gasket sleeved on the outside of the sliders is usually made of high-pressure resistant and wear-resistant materials, such as rubber or polytetrafluoroethylene. The main function of the sealing gasket is to seal and fit the inner wall of the buried steam pipe to ensure the air tightness and water tightness of the device.

Working principle: During the construction of the heating network, the pipeline must be subjected to a 3.86Mpa water pressure test for sealing. After the experiment is completed, the water inside the overhead pipeline shall be drained first, and then the remaining water inside the buried steam pipeline 2 shall be drained. When the remaining water inside the buried steam pipeline 2 is drained, it is necessary to first open the drain ports 21 on both sides of the top, and then connect the inflation port 45 of the drainage component 4 to the inflation pipe and place it in the drain port 21 on one side. After being placed in the drainage port 21, the internal air bag 44 is inflated through the inflation port 45 to ensure that there is sufficient gas inside the air bag 44 to push out a number of sliders 46. After being pushed out by the air bag, a number of sliders 46 push the sealing gasket 48 to make the sealing gasket 48 fit tightly against the inner wall of the buried steam pipeline 2. After it is fully fitted, the inflation pipe is pulled out. At this time, the air pipe 33 is sealed and connected to the drainage flange 22 of this drain port 21 through the fixed base 34. After the connection is completed, the high-pressure air pump 31 is turned on to inflate the buried through the air pipe 33 High-pressure gas is transported inside the underground steam pipe 2. Since a drainage component 4 sealed and fitted to the inner wall is placed inside the buried steam pipe 2, the drainage component 4 is pushed by the gas pressure, and the sealing gasket 48 is pushed by the gas pressure to move inside the buried steam pipe 2, and the remaining water in the pipe is pushed to move together during the movement. The remaining water in the pipe flows out from another drain port 21 after being pushed, and when the drainage component encounters a bend inside the pipe, the elasticity of the airbag 44 can make the slider 46 squeeze inward according to the inner wall of the pipe, and adapt and deform according to the different shapes inside the pipe, so that the sealing gasket 48 fits tightly to the inner wall of the buried steam pipe 2 to prevent leakage of residual water and always maintain a sealed fit state. After continuous air pressure transmission, the drainage component 4 discharges all the remaining water inside the buried steam pipe 2, and the drainage component 4 is also pushed out from the water outlet on the other side by the air pressure. Since the sealing gasket is made of elastic and wear-resistant material, it is convenient to use again.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. The automatic drainage device for the residual water in the buried pipe section comprises a buried steam pipeline (2), a high-pressure air pump assembly (3) and a drainage assembly (4), and is characterized in that: the drainage assembly (4) comprises a slide block base (41), a plurality of partition boards (42) are arranged in an annular array in the slide block base (41), limiting blocks (43) are arranged on two sides of each partition board (42), sliding blocks (46) are arranged in each partition board (42), sliding grooves (47) are formed in two sides of each sliding block (46), the sliding grooves (47) are meshed with the limiting blocks (43), and a plurality of air bags (44) are arranged on the inner sides of the sliding blocks (46).

2. The automatic drainage device for surplus water in a buried pipe section according to claim 1, wherein: an inflation inlet (45) is arranged above the air bag (44), and the inflation inlet (45) is arranged in a circular hole formed in the middle of the slider base (41).

3. The automatic drainage device for surplus water in a buried pipe section according to claim 2, wherein: the outer wall of the sliding block base (41) is provided with a sealing gasket (48), and the sealing gasket (48) is sleeved on the outer sides of the sliding blocks (46).

4. The automatic drainage device for surplus water in a buried pipe section according to claim 1, wherein: the buried steam pipeline (2) is arranged below the ground (1), two water outlets (21) are formed in the part, extending to the ground (1), of the buried steam pipeline (2), and drain flanges (22) are arranged on the outer walls of the two water outlets (21).

5. The automatic drainage device for surplus water in a buried pipe section according to claim 1, wherein: the high-pressure air pump assembly (3) comprises a high-pressure air pump (31), the high-pressure air pump (31) is arranged above the ground (1), and an air outlet (32) is formed above the high-pressure air pump (31).

6. The automatic drainage device for surplus water in a buried pipe section according to claim 5, wherein: the inner wall of the air outlet (32) is fixedly connected with an air pipe (33), a fixed base (34) is arranged on the outer wall of the air pipe (33), and the fixed base (34) is in sealing connection with the drain flange (22).

7. The automatic drainage device for surplus water in a buried pipe section according to claim 3, wherein: the sealing gasket (48) is sealed and attached to the inner wall of the buried steam pipeline (2).