CN221857907U - A mechanical sealing device with positioning leak detection - Google Patents

Abstract

The utility model relates to the technical field of mechanical sealing, and provides a mechanical sealing device with positioning leakage detection, which comprises: the compensator is arranged on the pipeline; the shell is arranged on the pipeline and is provided with an accommodating space, the accommodating space is a closed space, and the compensator is arranged in the accommodating space; the pressure detection piece is arranged on the shell and is used for detecting the pressure change of the accommodating space; the locating piece is arranged on the shell. By the technical scheme, the problems that when leakage occurs in the compensator of the underground heating power pipeline in the related technology in the prior art, the compensator is difficult to find in time and the compensator is difficult to determine the position are solved.

Description

A mechanical sealing device with positioning leak detection

Technical Field

The utility model relates to the technical field of mechanical seals, in particular to a mechanical seal device with positioning and leak detection.

Background Art

Most of the mechanical sealing devices with displacement compensation functions in thermal pipelines are buried directly underground, which makes it very difficult to inspect and test the equipment. It is difficult to determine the specific location of the pipeline compensator when a leak occurs, and it can only be discovered when a large amount of water accumulates on the ground. This not only brings heating troubles to the majority of heat users, but also causes huge energy waste. For some thermal pipelines buried directly underground, due to the long time, the construction drawings at that time were kept by many people and became messy, so it is quite difficult to find the location of a certain device.

Utility Model Content

The utility model provides a mechanical sealing device with positioning and leak detection, which solves the problem in the related art that when a compensator of an underground thermal pipeline leaks, it is not only difficult to find the leak in time, but also difficult to determine the location.

The technical solution of the utility model is as follows:

A mechanical sealing device with positioning leak detection, comprising:

pipeline;

A compensator, arranged on the pipeline;

A shell is arranged on the pipeline, the shell has a receiving space, the receiving space is a closed space, and the compensator is arranged in the receiving space;

A pressure detection component, disposed on the housing, and used to detect a pressure change in the accommodation space;

The first positioning member is arranged on the shell.

As a further technical solution, a first sealing member is also included, wherein the first sealing member includes:

A sealing gasket, arranged on the housing;

A sealing sleeve is sleeved on the compensator, and the sealing sleeve abuts against the sealing gasket.

As a further technical solution, the housing comprises:

A plurality of protective covers, wherein the plurality of protective covers are arranged on the compensator, and the plurality of protective covers constitute the accommodating space;

A mounting block, arranged on the protective cover, the mounting block having a plurality of mounting holes;

A leak-proof component is arranged on the protective cover, and the leak-proof component is used to seal the accommodating space.

As a further technical solution, the housing further comprises:

An air filling hole is arranged on the protective cover, and the air filling hole is used to fill air into the accommodating space.

As a further technical solution, the pressure detection component includes:

A mounting seat, arranged on the protective cover;

A pressure gauge is arranged on the mounting seat, and the pressure gauge is used to detect the pressure in the accommodating space.

As a further technical solution, the positioning component is a GPS positioning device.

As a further technical solution, the compensator includes:

A compensating sleeve, which is sleeved on one end of the pipeline, wherein one end of the compensating sleeve is slidably arranged relative to the pipeline, and the other end is connected to another pipeline;

The second sealing element is arranged in the compensation sleeve.

As a further technical solution, a reducer is provided in the middle of the compensating sleeve, the diameter of one end of the reducer is just equal to the outer diameter of the pipeline, and the other end covers the pipeline.

As further technical solutions, the following are included:

A thermal insulation layer, arranged outside the shell and the compensator;

A water leakage probe is arranged in the thermal insulation layer, and the water leakage probe is used to detect whether there is water in the thermal insulation layer.

The beneficial effects of the utility model are:

In the utility model, the pipeline is usually a thermal pipeline buried deep underground. Since the pipeline itself has the characteristics of thermal expansion and contraction, these expansion and contraction cannot be ignored when the pipeline is long. The common way is to install a pipeline compensator to compensate for the length change, but the pipeline compensator is easy to become the weakest link of the entire pipeline. The seal is set at the place where the pipeline compensator may leak. Even if the pipeline compensator leaks, water will not spray out immediately. The seal will block the water leaking from the pipeline, which has the effect of strengthening the seal. Because the pipeline is buried deep underground, it is very inconvenient to inspect and locate. The double-layer sealing structure is used to reinforce the pipeline compensation section, avoiding the hazards such as water accumulation caused by the leakage of the pipeline compensator, reducing the difficulty of maintenance. Since the pipeline is buried deep underground and the environment is relatively complex, a shell is added outside the mechanical seal to prevent soil or biological factors from damaging the mechanical seal, thereby extending the life of the seal. When the seal leaks, the pressure in the accommodation space will change due to the entry of water. At this time, the pressure detection component will capture these changes and transmit signals, which is convenient for the management and maintenance of the thermal pipeline. At the same time, the presence of the positioning parts makes it easier to determine the location of the leak, allowing managers to respond immediately and send maintenance personnel to carry out repairs.

BRIEF DESCRIPTION OF THE DRAWINGS

The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

FIG1 is a schematic diagram of the structure of the utility model including a heat-insulating layer;

Fig. 2 is a schematic diagram of the structure of the utility model;

FIG3 is a schematic structural diagram of the utility model from another perspective;

Figure 4 is a schematic diagram of the compensator and housing structure of the utility model;

Fig. 5 is a cross-sectional view of the utility model;

In the figure: 1. pipeline, 2. compensator, 3. shell, 310. accommodating space, 4. pressure detection part, 5. first positioning part, 300. first sealing part, 321. sealing gasket, 322. sealing sleeve, 330. protective cover, 340. mounting block, 350. leak-proof part, 360. mounting hole, 370. inflation hole, 410. mounting seat, 420. mounting hole, 430. pressure gauge, 210. compensation sleeve, 220. second sealing part, 211. reducer, 6. insulation layer, 610. water leakage probe.

DETAILED DESCRIPTION

The following will be combined with 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 of 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.

As shown in Figures 1 to 5, a mechanical sealing device with positioning and leak detection includes: a compensator 2 is arranged on a pipeline 1; a shell 3 is arranged on the pipeline 1, the shell 3 has a accommodating space 310, the accommodating space 310 is a closed space, and the compensator 2 is arranged in the accommodating space 310; a pressure detection component 4 is arranged on the shell 3, and the pressure detection component 4 is used to detect the pressure change of the accommodating space 310; a first positioning component 5 is arranged on the shell 3.

In this embodiment, the pipeline is usually a thermal pipeline 1 buried deep underground. Since the pipeline 1 itself has the characteristics of thermal expansion and contraction, these expansions and contractions cannot be ignored when the pipeline 1 is long. A common method is to install a compensator 2 for the pipeline 1 to compensate for the change in length, but the compensator 2 of the pipeline 1 can easily become the weakest link in the entire pipeline. The seal is set at the place where the pipeline compensator 2 may leak. Even if the pipeline compensator 2 leaks, water will not spray out immediately. The seal will block the water leaking from the pipeline, thereby strengthening the sealing effect. Because the pipeline is buried deep underground as a whole, it is very inconvenient to inspect and locate it. A double-layer sealing structure is used to reinforce the pipeline compensation section, which avoids hazards such as water accumulation caused by leakage of the pipeline 1 compensator 2 and reduces the difficulty of maintenance. Since the pipeline is buried deep underground and the environment is relatively complex, a shell 3 is added outside the mechanical seal to prevent soil or biological factors from damaging the mechanical seal, thereby extending the life of the seal. When the seal leaks, the pressure in the accommodating space 310 will change due to the entry of water. At this time, the pressure detection component 4 will capture these changes and transmit signals to facilitate the management and maintenance of the thermal pipeline 1. At the same time, the existence of the first positioning component 5 provides convenience for determining the location of the leak, so that the management personnel can respond immediately and send maintenance personnel for maintenance. The first positioning component 5 and the pressure detection component 4 are used together for detection, which can not only find and locate the location of the leak immediately, but also reduce the time for on-site verification, ensure that the leak point can be handled immediately, avoid losses, and reduce the difficulty of maintenance. The first positioning component 5 uses a GPS positioning system, which has the advantages of high precision, real-time, automation, anti-interference, multiple application scenarios, good compatibility, and strong scalability. It can effectively ensure the accuracy and feasibility of positioning, and avoid the inability to find the leak location when a leak occurs.

Furthermore, the first sealing member 300 includes: a sealing gasket 321 disposed on the housing 3 ; a sealing sleeve 322 sleeved on the compensator 2 , and the sealing sleeve 322 abuts against the sealing gasket 321 .

In this embodiment, since the space of the shell 3 is a sealed space, it is necessary to seal the connecting part between the space and the compensator 2, and a sealing sleeve 322 and a sealing gasket 321 are used for this purpose. The sealing gasket 321 is arranged on the shell 3, and the sealing sleeve 322 is directly mounted on the compensator 2. When the shell 3 is installed, the sealing gasket 321 will abut against the sealing sleeve 322 to complete the sealing. This form can not only ensure the effectiveness of the seal, but also after the compensator 2 slides due to thermal expansion and contraction, the sealing sleeve 322 has a thickness and will not cause seal failure, so that the shell 3 can adapt to the working environment of the compensator 2, ensure that the space is always in a closed state, and ensure the authenticity of the pressure detection component 4 detection.

Furthermore, the housing 3 includes: a plurality of protective covers 330, the plurality of protective covers 330 are arranged on the compensator 2, and the plurality of protective covers 330 form a receiving space 310; a mounting block 340 is arranged on the protective cover 330, and the mounting block 340 has a plurality of mounting holes 420; a leak-proof part 350 is arranged on the protective cover 330, and the leak-proof part 350 is used to seal the receiving space 310.

In this embodiment, the protective cover 330 is semicircular, and two protective covers 330 form a protective cover 330. The pipeline is buried deep underground. If the mechanical seal is buried directly underground, the mechanical seal will be affected by the natural environment, causing corrosion or damage, and the service life of the mechanical seal will be greatly reduced. Therefore, an outer shell 3 is provided on the outer side of the mechanical seal. The outer shell 3 will replace the mechanical seal to resist erosion and prevent the mechanical seal from being damaged prematurely, thereby protecting the service life of the mechanical seal from being shortened. The outer shell 3 will be painted and sealed as a whole to ensure that no water vapor enters the internal accommodation space 310, and at the same time it can also delay the erosion time and increase the service life.

Furthermore, the housing 3 further includes: an air filling hole 370 disposed on the protective cover 330 , and the air filling hole 370 is used to fill air into the accommodating space 310 .

In this embodiment, when the accommodation space 310 is installed, air is inflated into the accommodation space 310 through the air filling hole 370. A one-way valve is installed in the air filling hole 370, and air can only be inflated into the accommodation space 310 through the air filling hole 370. The gas in the accommodation space 310 cannot be discharged from the air filling hole 370, so that the accommodation space 310 has a certain pressure. When the first sealing member 320 and the second sealing member 220 both leak, the pressure in the accommodation space 310 will change greatly due to the entry of water, so that the pressure detection member 4 can detect and transmit the signal in the first time. By increasing the pressure in the accommodation space 310 through the air filling hole 370, the mechanical seal can be sensed in the first time after the leakage occurs. If a certain pressure is not applied in the accommodation space 310, even if water flows into the accommodation space 310, the pressure change is not obvious, and the pressure change may not be sensed, resulting in more serious leakage and failure to respond in time.

Furthermore, the pressure detection member 4 includes: a mounting seat 410 disposed on the protective cover 330 ; a pressure gauge 430 disposed on the mounting seat 410 , and the pressure gauge 430 is used to detect the pressure in the accommodating space 310 .

In this embodiment, the pressure gauge 430 is a waterproof pressure gauge 430. Even if a leak occurs, the pressure gauge 430 itself will not be damaged. The pressure gauge 430 is arranged inside the housing 3 to prevent erosion by the external environment and to increase the life of the pressure gauge 430. The mounting seat 410 makes the connection between the pressure gauge 430 and the housing 3 tighter. The pressure gauge 430 itself has a signal transmission function, which transmits a signal when the air pressure changes or becomes a preset value, so as to facilitate prevention or detection.

Furthermore, the positioning member 5 is a GPS positioning device.

In this embodiment, the positioning device and the pressure gauge 430 are arranged in the same place. When the pressure of the pressure gauge 430 changes and transmits a signal, the GPS positioning device will send a signal at the same time, so that the management and construction personnel can accurately know the location of the leak and carry out precise construction, thereby preventing the problem that the drawings cannot be found at the time due to the long time between the leak and the laying of the construction, and the leak point cannot be accurately located. This improves the efficiency of the repair and shortens the maintenance time.

Furthermore, the compensation sleeve 210 is sleeved on one end of the pipeline 1 , one end of the compensation sleeve 210 is slidably arranged relative to the pipeline 1 , and the other end is connected to another pipeline 1 ; there are a plurality of second sealing members 220 , which are arranged at intervals in the compensation sleeve 210 .

In this embodiment, the inner wall of the compensation sleeve 210 can just abut against the outer wall of the pipeline 1, and at the same time, the plurality of seals are sealing gaskets 321, which are evenly distributed inside the compensation sleeve 210. Even if the length of the pipeline 1 changes greatly due to thermal expansion and contraction, there is always a sealing structure in the compensation sleeve 210 to seal the pipeline, preventing leakage of the pipeline, ensuring the normal operation of the compensator 2 while also preventing leakage, thereby increasing the service life of the device. When the second seal fails, the sealing gasket 321 and the sealing sleeve 322 will only work after the water in the pipeline is connected to the accommodation space 310, further protecting the medium from leakage, and still being able to provide normal heating. At the same time, the leakage message is transmitted, and then repairs are carried out at an appropriate time.

Furthermore, a reducer 211 is provided in the middle of the compensation sleeve 210 , the diameter of one end of the reducer 211 is just equal to the outer diameter of the pipeline 1 , and the other end covers the pipeline 1 .

In this embodiment, the compensation sleeve 210 reduces the diameter of one end which is originally slightly larger than the pipe 1 through a diameter reduction process, thereby ensuring that the diameter of the entire pipe 1 is the same, and preventing the increase in heat loss during transportation in the pipe 1 due to different pipeline diameters.

Furthermore, it also includes: a thermal insulation layer 6 is arranged outside the shell 3 and the compensator 2; a water leakage probe 610 is arranged in the thermal insulation layer 6, and the water leakage probe 610 is used to detect whether there is water in the thermal insulation layer 6.

In this embodiment, the insulation layer 6 outside the device can effectively maintain the temperature from being lost during the transportation process, effectively ensure the effective utilization of heat energy, and improve the transportation efficiency of heat energy. At the same time, the water leakage probe 610 in the insulation layer 6 is used to detect whether there is water. It can not only detect whether there is water leakage itself, but also detect whether there is water in the surrounding area entering the insulation layer 6, ensuring that the insulation layer 6 will not be damaged.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A mechanical sealing device with positioning leak detection, characterized in that it includes: pipeline(1); A compensator (2) is arranged on the pipeline (1); A housing (3) is arranged on the pipeline (1), the housing (3) having a receiving space (310), the receiving space (310) being a closed space, and the compensator (2) is arranged in the receiving space (310); A pressure detection component (4) is arranged on the housing (3), and the pressure detection component (4) is used to detect pressure changes in the accommodation space (310); A first positioning member (5) is arranged on the housing (3). 2. The mechanical sealing device with positioning and leak detection function according to claim 1, further comprising: a first sealing component (300), wherein the first sealing component (300) comprises: A sealing gasket (321) disposed on the housing (3); A sealing sleeve (322) is sleeved on the compensator (2), and the sealing sleeve (322) is in abutment with the sealing gasket (321). 3. A mechanical sealing device with positioning and leak detection according to claim 1, characterized in that the housing (3) comprises: A plurality of protective covers (330), wherein the plurality of protective covers (330) are disposed on the compensator (2), and the plurality of protective covers (330) form the accommodating space (310); A mounting block (340) is arranged on the protective cover (330), and the mounting block (340) has a plurality of mounting holes (360); A leak-proof member (350) is arranged on the protective cover (330), and the leak-proof member (350) is used to seal the accommodating space (310). 4. A mechanical sealing device with positioning and leak detection according to claim 3, characterized in that the housing (3) further comprises: An air filling hole (370) is provided on the protective cover (330), and the air filling hole (370) is used to fill air into the accommodating space (310). 5. A mechanical sealing device with positioning leak detection according to claim 3, characterized in that the pressure detection element (4) comprises: A mounting seat (410) disposed on the protective cover (330); A pressure gauge (430) is arranged on the mounting seat (410), and the pressure gauge (430) is used to detect the pressure in the accommodation space (310). 6. A mechanical sealing device with positioning and leak detection according to claim 1, characterized in that the positioning member (5) is a GPS positioning device. 7. A mechanical sealing device with positioning and leak detection according to claim 1, characterized in that the compensator (2) comprises: A compensation sleeve (210) is sleeved on one end of the pipeline (1); one end of the compensation sleeve (210) is slidably arranged relative to the pipeline (1), and the other end is connected to another pipeline (1); A second sealing element (220) is arranged in the compensation sleeve (210). 8. A mechanical sealing device with positioning and leak detection function according to claim 7, characterized in that a reducer (211) is provided in the middle of the compensation sleeve (210), the diameter of one end of the reducer (211) is exactly equal to the outer diameter of the pipe (1), and the other end covers the pipe (1). 9. The mechanical sealing device with positioning leak detection according to claim 1, characterized in that it also includes: A thermal insulation layer (6) is arranged outside the outer shell (3) and the compensator (2); A water leakage probe (610) is arranged in the thermal insulation layer (6), and the water leakage probe (610) is used to detect whether there is water in the thermal insulation layer.