Anti-freezing and anti-blocking exhaust valve

Abstract

The utility model belongs to the technical field of exhaust valves, and discloses an anti-freezing and anti-blocking exhaust valve which comprises an exhaust valve body, the top end of the exhaust valve body is communicated with an air outlet pipe, an anti-freezing assembly is installed on the surface of the exhaust valve body and comprises a connecting pipe, and the outlet end of the air outlet pipe is communicated with the connecting pipe. A connecting pipe is installed on the upper end face of the exhaust valve body, spiral threads are formed in the inner surface of the connecting pipe, a base is installed on the upper end face of the exhaust valve body, a water draining groove is formed in the base, a plurality of water draining holes are evenly formed in the water draining groove, a supporting base is installed on the upper end face of the base, and a heating sleeve is arranged on the upper end face of the supporting base; the anti-freezing and anti-blocking exhaust valve has the advantages that anti-freezing and anti-blocking treatment can be carried out on the exhaust valve, and water vapor in surrounding air is prevented from being liquefied or solidified to form frost or a frozen layer, and the frost or the frozen layer is accumulated to block an exhaust channel.

Description

Technical Field

[0001] This utility model belongs to the field of exhaust valve technology, specifically an anti-freezing and anti-clogging exhaust valve. Background Technology

[0002] As an indispensable key auxiliary component in pipeline systems, air vents are widely used in various pipeline systems such as boilers, oil and gas, and water supply and drainage. In actual operation, air vents are usually installed at the highest point or bend of the pipeline. By timely releasing excess gas accumulated in the pipeline, they can effectively avoid gas blockage, significantly improve the transmission efficiency of the pipeline system, and reduce the extra energy consumption caused by gas retention.

[0003] However, when venting valves are applied to liquefied natural gas (LNG) transportation pipelines, they face significant technical challenges. LNG remains at extremely low temperatures throughout transportation. Near the valve's outlet, the low temperature of the LNG causes the surrounding air to cool rapidly, leading to the liquefaction or even condensation of water vapor and some low-boiling-point gases on the valve surface, forming frost or a frozen layer. These condensates gradually accumulate and block the venting passage, severely affecting the normal operation of the venting valve. This prevents gas from escaping smoothly from the pipeline, impacting the overall venting efficiency. Furthermore, its anti-freezing and anti-blocking capabilities remain significantly insufficient, potentially causing serious safety issues.

[0004] Therefore, an antifreeze and anti-blockage exhaust valve is proposed to address the above problems. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides an anti-freezing exhaust valve, which has the advantage of being able to prevent the exhaust valve from freezing and condensing, thus avoiding the formation of frost or frozen layers that accumulate and block the exhaust passage.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-freeze vent valve, comprising a vent valve body, wherein the top end of the vent valve body is connected to an vent pipe, and an anti-freeze component is installed on the surface of the vent valve body;

[0007] The antifreeze component includes a connecting pipe, the outlet end of the air outlet pipe is connected to the connecting pipe, and the inner surface of the connecting pipe is provided with spiral patterns.

[0008] A base is installed on the upper end face of the exhaust valve body. A water groove is opened inside the base, and several water holes are evenly opened inside the water groove. A support is installed on the upper end face of the base. A heating sleeve is provided on the upper end face of the support. A nickel-chromium alloy electric wire is installed in the cavity opened inside the heating sleeve. A protective sleeve is embedded inside the heating sleeve. The protective sleeve tightly wraps around the outer surface of the connecting pipe. A heating controller is installed on both sides of the outer surface of the heating sleeve. A disassembly component is installed on the surface of the heating sleeve.

[0009] Preferably, the surface of the exhaust valve body is provided with multiple guide grooves.

[0010] Preferably, the heating controller and the nickel-chromium alloy wire are electrically connected by a high-temperature resistant wire.

[0011] Preferably, the drain holes are arranged in a regular array around the center of the base.

[0012] Preferably, a temperature monitor is installed on the surface of the heating jacket.

[0013] Preferably, a sealing sleeve is installed between the exhaust valve body and the base.

[0014] Preferably, the disassembly assembly includes a connecting plate, the connecting plate is symmetrically mounted on the surface of the heating sleeve, a fixing rod is slidably connected in a through hole opened on the surface of the connecting plate, one end of the fixing rod passes through the connecting plate and is inserted into a socket opened on the surface of the support base.

[0015] Preferably, a return spring is sleeved on the surface of the fixing rod, one end of the return spring is connected to the fixing rod, and the other end of the return spring is connected to the connecting plate.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. This utility model, through the combined use of a nickel-chromium alloy electric wire and a heating controller, can heat the connecting pipe in a timely manner, effectively preventing freezing blockage caused by low temperatures, ensuring the exhaust valve body can continue to work normally in cold environments, and avoiding the accumulation of condensate that could block the connecting pipe and affect the exhaust effect of the exhaust valve body.

[0018] 2. This utility model, by setting up a disassembly component, can quickly disassemble the heating jacket, which facilitates the inspection and replacement of internal components such as nickel-chromium alloy wires and protective sleeves, greatly reducing maintenance difficulty, shortening maintenance time, and improving maintenance efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the air outlet pipe and base of this utility model;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the heating jacket of this utility model;

[0022] Figure 4 This is a schematic diagram of the cross-sectional structure of the base of this utility model;

[0023] Figure 5 This is a schematic diagram of the connecting pipe and spiral pattern of this utility model.

[0024] In the diagram: 1. Exhaust valve body; 12. Exhaust pipe; 2. Antifreeze component; 21. Connecting pipe; 22. Spiral pattern; 23. Base; 24. Water tank; 25. Water drain hole; 26. Guide channel; 27. Support base; 28. Heating jacket; 29. ​​Nickel-chromium alloy wire; 210. Protective sleeve; 211. Heating controller; 212. Temperature monitor; 213. Sealing sleeve; 3. Disassembly component; 31. Connecting plate; 32. Fixing rod; 33. Return spring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] like Figures 1 to 5 As shown, this utility model provides an antifreeze vent valve, including a vent valve body 1, an vent pipe 12 connected to the top of the vent valve body 1, and an antifreeze component 2 installed on the surface of the vent valve body 1.

[0027] The antifreeze component 2 includes a connecting pipe 21, the outlet end of the air outlet pipe 12 is connected to the connecting pipe 21, and the inner surface of the connecting pipe 21 is provided with spiral patterns 22.

[0028] A base 23 is installed on the upper end face of the exhaust valve body 1. A drain groove 24 is opened inside the base 23, and several drain holes 25 are evenly opened inside the drain groove 24. A support 27 is installed on the upper end face of the base 23. A heating sleeve 28 is set on the upper end face of the support 27. A nickel-chromium alloy wire 29 is set in the cavity opened inside the heating sleeve 28. A protective sleeve 210 is embedded inside the heating sleeve 28. The protective sleeve 210 tightly wraps the outer surface of the connecting pipe 21. A heating controller 211 is installed on both sides of the outer surface of the heating sleeve 28. A disassembly component 3 is installed on the surface of the heating sleeve 28. By setting the nickel-chromium alloy wire 29 and the heating controller 211, the connecting pipe 21 can be heated in time, effectively preventing freezing blockage caused by low temperature, ensuring that the exhaust valve body 1 can continue to work normally in cold environment, and avoiding the accumulation of condensate and blockage of the connecting pipe 21, which would affect the exhaust effect of the exhaust valve body 1.

[0029] Specifically, the surface of the exhaust valve body 1 is provided with multiple guide grooves 26, which enable the condensate to be discharged to the outside.

[0030] like Figures 1 to 5 As shown, the heating controller 211 is electrically connected to the nickel-chromium alloy wire 29 through a high-temperature resistant wire, which enables the nickel-chromium alloy wire 29 to be controlled for heating.

[0031] Furthermore, the drain holes 25 are arranged in a regular array around the center of the base 23 to improve drainage and prevent condensation from accumulating.

[0032] like Figures 1 to 5 As shown, a temperature monitor 212 is installed on the surface of the heating jacket 28, enabling timely heating treatment.

[0033] It is worth noting that a sealing sleeve 213 is installed between the exhaust valve body 1 and the base 23, which can seal the exhaust valve body 1 and the base 23.

[0034] like Figures 1 to 5 As shown, the disassembly assembly 3 includes a connecting plate 31. The connecting plate 31 is symmetrically mounted on the surface of the heating sleeve 28. A fixing rod 32 is slidably connected in the through hole opened on the surface of the connecting plate 31. One end of the fixing rod 32 passes through the connecting plate 31 and is inserted into the insertion hole opened on the surface of the support base 27. This allows for quick disassembly of the heating sleeve 28, facilitating the inspection and replacement of internal components such as the nickel-chromium alloy wire 29 and the protective sleeve 210. This significantly reduces maintenance difficulty, shortens maintenance time, and improves maintenance efficiency.

[0035] It is worth emphasizing that a return spring 33 is sleeved on the surface of the fixed rod 32. One end of the return spring 33 is connected to the fixed rod 32, and the other end of the return spring 33 is connected to the connecting plate 31, which makes it convenient for operators to use.

[0036] The structure of the heating controller 211, the nickel-chromium alloy wire 29 and the temperature monitor 212 are existing technologies. In addition, the present invention also includes a power supply, a controller and a switch, etc., which are not the main technical points of this patent and will not be described in detail. Their working principle is a well-known technology, and the appropriate model should be selected according to the actual use.

[0037] Working principle and process: Gas in the pipeline enters the exhaust valve body 1, passes through the internal structure, and is discharged through the exhaust pipe 12. The exhaust pipe 12 is connected to the connecting pipe 21, and the gas is further discharged to the outside through the connecting pipe 21. When the ambient temperature is low, the exhaust valve body 1 may freeze and become blocked.

[0038] The heating controller 211 is connected to the nickel-chromium alloy wire 29 via a high-temperature resistant wire. The heating controller 211 is based on the preset temperature conditions or the temperature information fed back by the temperature monitor 212. When the temperature is abnormal, the temperature monitor 212 feeds back to the heating controller 211, causing the heating controller 211 to start heating the nickel-chromium alloy wire 29. The nickel-chromium alloy wire 29 is located in the cavity opened inside the heating jacket 28. The heat generated is transferred to the connecting pipe 21 through the protective sleeve 210 to prevent the connecting pipe 21 and the air outlet pipe 12 from freezing due to low temperature. The protective sleeve 210 tightly wraps around the outer surface of the connecting pipe 21, which can not only ensure effective heat transfer, but also provide a certain degree of protection for the connecting pipe 21.

[0039] When condensate is generated, it slides down the spiral grooves 22 on the surface of the connecting pipe 21. The spiral grooves 22 guide the condensate into the drain trough 24, and then discharge it through the evenly spaced drain holes 25. The condensate is discharged outward along the guide groove 26. The drain holes 25 are distributed in a regular array around the center of the base 23, which can ensure the uniformity and efficiency of drainage and avoid freezing and blockage caused by water accumulation. The sealing sleeve 213 is installed between the exhaust valve body 1 and the base 23, which can improve the sealing between the two.

[0040] When maintenance or replacement of components such as the heating jacket 28 or the internal nickel-chromium alloy wire 29 is required, first pull the fixing rod 32 to pull it out of the insertion hole on the surface of the support base 27. At the same time, the return spring 33 is stretched. After the fixing rod 32 is completely disengaged from the insertion hole, the heating jacket 28 can be removed from the support base 27 for the corresponding maintenance operation.

[0041] After maintenance, place the heating sleeve 28 back onto the support base 27, loosen the fixing rod 32, and the return spring 33 retracts, causing the fixing rod 32 to be inserted into the insertion hole of the support base 27, thus completing the installation and fixing of the heating sleeve 28.

[0042] It should be noted that during normal operation of the exhaust valve body 1, the temperature monitor 212 is continuously working, closely monitoring the temperature of the surrounding environment and the connecting pipe 21. The temperature monitor 212 continuously transmits the real-time collected temperature data to the heating controller 211 in the form of electrical signals. After receiving the temperature data from the temperature monitor 212, the heating controller 211 determines that if the current temperature is lower than the start-up temperature threshold, it means that the exhaust valve body 1 may face the risk of freezing. At this time, the heating controller 211 quickly starts heating. The heating controller 211 supplies current to the nickel-chromium alloy wire 29 through a high-temperature resistant wire. The nickel-chromium alloy wire 29 has good resistance characteristics and generates Joule heat when current passes through it. The generated heat is transferred to the connecting pipe 21 through the protective sleeve 210, thereby raising the temperature of the relevant parts of the exhaust valve and preventing freezing due to low temperature. When the temperature reaches normal, the heating controller 211 cuts off the power supply to the nickel-chromium alloy wire 29, causing the nickel-chromium alloy wire 29 to stop heating and ending the heating process. This operation is a mature existing technology, and the specific steps can be referred to the existing technology.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An anti-freeze vent valve, comprising a vent valve body, characterized in that: The top of the exhaust valve body is connected to an exhaust pipe, and an antifreeze component is installed on the surface of the exhaust valve body. The antifreeze component includes a connecting pipe, the outlet end of the air outlet pipe is connected to the connecting pipe, and the inner surface of the connecting pipe is provided with spiral patterns. A base is installed on the upper end face of the exhaust valve body. A water groove is opened inside the base, and several water holes are evenly opened inside the water groove. A support is installed on the upper end face of the base. A heating sleeve is provided on the upper end face of the support. A nickel-chromium alloy electric wire is installed in the cavity opened inside the heating sleeve. A protective sleeve is embedded inside the heating sleeve. The protective sleeve tightly wraps around the outer surface of the connecting pipe. A heating controller is installed on both sides of the outer surface of the heating sleeve. A disassembly component is installed on the surface of the heating sleeve.

2. The antifreeze vent valve according to claim 1, characterized in that: The surface of the exhaust valve body is provided with multiple flow guide grooves.

3. The antifreeze vent valve according to claim 1, characterized in that: The heating controller and the nickel-chromium alloy wire are electrically connected by a high-temperature resistant wire.

4. The antifreeze vent valve according to claim 1, characterized in that: The drain holes are arranged in a regular array around the center of the base.

5. The antifreeze vent valve according to claim 1, characterized in that: A temperature monitor is installed on the surface of the heating jacket.

6. The antifreeze vent valve according to claim 1, characterized in that: A sealing sleeve is installed between the exhaust valve body and the base.

7. The antifreeze vent valve according to claim 1, characterized in that: The disassembly assembly includes a connecting plate. The connecting plate is symmetrically mounted on the surface of the heating sleeve. A fixing rod is slidably connected in a through hole on the surface of the connecting plate. One end of the fixing rod passes through the connecting plate and is inserted into a socket on the surface of the support base.

8. The antifreeze vent valve according to claim 7, characterized in that: A return spring is fitted onto the surface of the fixing rod. One end of the return spring is connected to the fixing rod, and the other end of the return spring is connected to the connecting plate.

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