Liquid level measuring device for deaerator

Abstract

The utility model relates to the technical field of deaerator liquid level detection, and provides a deaerator liquid level measuring device which comprises a shell and an L-shaped liquid level pipe arranged in the shell in a sleeved mode, the vertical section of the L-shaped liquid level pipe is wrapped with a heat conduction sleeve except for a display area, and the heat conduction sleeve comprises a plurality of counter bores for containing a plurality of PTC ceramics; a heat preservation cover is arranged outside the heat conduction sleeve, the shell is bonded with the outer wall of the heat preservation cover, and a transparent tempered film is arranged on the heat preservation cover corresponding to the display area. A power box is arranged at one end of the shell and electrically connected with the PTC ceramic, and a flange used for being in butt joint with a deaerator is arranged at a port of the horizontal section of the L-shaped liquid level pipe. According to the utility model, the heat conduction sleeve is arranged outside the display area in the vertical section of the L-shaped liquid level pipe, and the heating element-PTC ceramic is embedded in the heat conduction sleeve to heat the L-shaped liquid level pipe so as to preheat or heat the L-shaped liquid level pipe in an auxiliary manner, so that the liquid level pipe is effectively prevented from being damaged due to large temperature difference inside and outside the pipe, and the service life of the liquid level pipe is prolonged. And the use safety and the service life of the liquid level measuring device on the deaerator are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of deaerator liquid level detection, in particular to a deaerator liquid level measuring device. BACKGROUND

[0002] In a boiler or other water-using equipment, oxygen in water can affect the progress of the reaction or produce oxide deposits after reacting with the reactants and adhering to the inner wall of the equipment, which seriously affects the heat dissipation of the reaction equipment or the normal progress of the reaction, so it is often necessary to remove oxygen in the water used for reaction through a deaerator. According to Henry's law, the deaerator is set up, which utilizes the relationship that the solubility of a gas in a solution is directly proportional to the equilibrium pressure of the solute on the liquid surface under isothermal and isobaric conditions, and the gas in the water is continuously precipitated by heating to achieve the purpose of deaeration. Because the internal environment of the deaerator is at a high temperature, if the equipment is in a lower environment, the temperature difference between the inside and outside of the liquid level tube is large, and the thermal expansion and cold contraction are obvious, which may cause the liquid level tube to burst. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the present utility model provide a deaerator liquid level measuring device to solve the technical problem that the liquid level tube is easily damaged due to a large temperature difference between the inside and outside of the liquid level tube in the existing liquid level detection device.

[0004] A deaerator liquid level measuring device, comprising a shell and an L-shaped liquid level tube sleeved in the shell, a heat conduction sleeve is wrapped around the vertical section of the L-shaped liquid level tube except a display area, the heat conduction sleeve comprises a plurality of counterbores containing PTC ceramics, and the PTC ceramics are connected in series through wires; a heat preservation cover is arranged outside the heat conduction sleeve, the shell and the outer wall of the heat preservation cover are bonded, a transparent tempered film is arranged on the heat preservation cover corresponding to the display area; a power box is arranged at one end of the shell, the power box is electrically connected with the PTC ceramics through wires, and a flange plate is arranged at the port of the horizontal section of the L-shaped liquid level tube, and the flange plate is used for docking with a deaerator.

[0005] Optionally, the shell comprises an observation hole in a waist-shaped structure.

[0006] Optionally, the PTC ceramics are arranged in the heat conduction sleeve at equal intervals along the length direction of the vertical section of the L-shaped liquid level tube.

[0007] Optionally, the horizontal section of the L-shaped liquid level tube further comprises a screen, the screen is a sheet-shaped zeolite, and the screen is embedded in the end face of the flange plate.

[0008] Optionally, an indicator light strip is arranged at the position corresponding to the display area of the heat conduction sleeve, and the indicator light strip is electrically connected with the power box.

[0009] Optionally, the L-shaped liquid level tube is a round pipe or a square pipe.

[0010] The deaerator liquid level measuring device has the advantages that the L-shaped liquid level pipe is used to detect the liquid level according to the principle of the communicating vessel, the heat conduction sleeve is arranged outside the display area of the vertical section of the L-shaped liquid level pipe, the heating element, i.e., the PTC ceramic, is embedded in the heat conduction sleeve, a plurality of PTC ceramics are arranged in series in the length direction of the L-shaped liquid level pipe to heat the L-shaped liquid level pipe, the L-shaped liquid level pipe is preheated or assisted to heat, the liquid level pipe is effectively prevented from being damaged due to a large temperature difference between the inside and outside of the pipe, and the use safety and service life of the liquid level measuring device on the deaerator are improved.

[0011] The deaerator liquid level measuring device has the advantages that the L-shaped liquid level pipe is used to detect the liquid level according to the principle of the communicating vessel, the heat conduction sleeve is arranged outside the display area of the vertical section of the L-shaped liquid level pipe, the heating element, i.e., the PTC ceramic, is embedded in the heat conduction sleeve, a plurality of PTC ceramics are arranged in series in the length direction of the L-shaped liquid level pipe to heat the L-shaped liquid level pipe, the L-shaped liquid level pipe is preheated or assisted to heat, the liquid level pipe is effectively prevented from being damaged due to a large temperature difference between the inside and outside of the pipe, and the use safety and service life of the liquid level measuring device on the deaerator are improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 Fig. 1 is a three-dimensional structural schematic view of a first deaerator liquid level measuring device in the application;

[0013] Figure 2 Fig. 2 is a partial sectional view schematic view of a liquid level measuring device in the embodiment of the application;

[0014] Figure 3 Fig. 3 is a schematic view of the connection relationship between the PTC ceramic and the metal electrode sheet in the embodiment of the application;

[0015] Figure 4 Fig. 4 is a front structural schematic view of a second deaerator liquid level measuring device provided in the application.

[0016] In the drawings:

[0017] 1: shell; 11: observation hole; 2: L-shaped liquid level pipe; 3: heat conduction sleeve; 4: PTC ceramic; 5: heat preservation cover; 6: power supply box; 7: flange plate; 8: screen. DETAILED DESCRIPTION

[0018] The technical solutions in the application embodiments will be clearly and completely described below with reference to the drawings in the application embodiments. In addition, "in an embodiment" or "in an embodiment" appearing at various places in the specification does not necessarily mean the same embodiment. In addition, these specific features, structures or characteristics can be combined in any suitable manner in one or more embodiments.

[0019] It is also need to make clear that, in this article, the relationship terms such as first and second are only used to distinguish one entity from another entity, and do not necessarily require or imply that there is any such actual relationship or order between these entities. Moreover, the term "include", "contain" or any other variant thereof is intended to cover non-exclusive inclusion, so that the article or terminal device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such article or terminal device. Without more limitation, the element defined by the statement "including a" does not exclude the presence of another same element in the article or terminal device including the element.

[0020] In the boiler or other water equipment, the oxygen in the water will affect the progress of the reaction or produce oxide precipitate after reacting with the reactant and adhere to the inner wall of the equipment, which seriously affects the heat dissipation of the reaction equipment or the normal progress of the reaction, so it is often necessary to remove the oxygen in the water for reaction through the deaerator. According to the deaerator set according to Henry's law, the solubility of gas in solution is proportional to the equilibrium pressure of the solute on the liquid surface under isothermal and isobaric conditions. By heating, the gas in the water is constantly precipitated to achieve the purpose of deoxidation. Because the internal environment of the deaerator is relatively high, if the equipment is in a lower environment, the temperature difference between the inside and outside of the liquid level tube is large, and the thermal expansion and cold contraction are obvious, which may cause the liquid level tube to burst. The float ball and the guide rod of the general float ball type liquid level detector are easy to oxidize and crystallize, which will affect the measurement accuracy, and long-term crystallization will corrode the guide rod, and further affect the service life of the detector. Therefore, the utility model provides a kind of deaerator liquid level measuring device.

[0021] The utility model will be described in detail in combination with the drawings.

[0022] Example 1

[0023] As Figure 1 And Figure 2As shown, the embodiment provides a deaerator liquid level measuring device, which comprises a shell 1 and an L-shaped liquid level tube 2 sleeved in the shell 1, a heat conduction sleeve 3 is wrapped around the vertical section of the L-shaped liquid level tube 2 except the display area, the heat conduction sleeve 3 comprises a plurality of recesses containing PTC ceramics 4, the PTC ceramics 4 are arranged in series through wires; a heat preservation cover 5 is arranged outside the heat conduction sleeve 3, the shell 1 is bonded with the outer wall of the heat preservation cover 5, and a transparent tempered film is arranged on the heat preservation cover 5 corresponding to the display area; a power box 6 is arranged at one end of the shell 1, the power box 6 is electrically connected with the PTC ceramics 4 through wires, and a flange plate 7 is arranged at the port of the horizontal section of the L-shaped liquid level tube 2, which is used to be connected with the deaerator. Wherein, the shell 1 comprises a waist-shaped observation hole 11, and the PTC ceramics 4 are arranged in the heat conduction sleeve 3 at equal intervals along the length direction of the vertical section of the L-shaped liquid level tube 2.

[0024] As described above, in the embodiment, the L-shaped liquid level tube 2 is arranged to detect the liquid level according to the principle of the communicating vessel, mainly in that the heat conduction sleeve 3 is arranged in the vertical section of the L-shaped liquid level tube 2 except the display area, the heating element, i.e. the PTC ceramic 4, is embedded in the heat conduction sleeve 3, and a plurality of PTC ceramics 4 are arranged in series along the length direction of the L-shaped liquid level tube 2 to heat the L-shaped liquid level tube 2, so as to preheat or assist heating the L-shaped liquid level tube 2, which effectively prevents the liquid level tube from being damaged due to large temperature difference between the inside and outside of the tube, and further improves the use safety and service life of the liquid level measuring device on the deaerator.

[0025] The aforementioned display area refers to an area for displaying the liquid level height, and the observer observes the height of the liquid level in the deaerator in this area. Taking the L-shaped liquid level tube 2 as a circular tube for example, the aforementioned heat conduction sleeve 3 is arranged in a cylindrical structure, as shown in Figure 3 The heat conduction sleeve 3 is made of insulating material, and the recess in the outer surface of the heat conduction sleeve 3 comprises a metal electrode sheet, such as an aluminum electrode sheet, in addition to the PTC ceramic 4, which is bonded with the two electrode surfaces of the PTC ceramic 4 through conductive adhesive and connected with the positive and negative poles of the power box 6 through wires. In addition, one side of the metal electrode sheet needs to be sprayed with insulating paint. In addition, the aforementioned heat conduction sleeve 3 is provided with an indicator light strip at the position corresponding to the display area, and the indicator light strip is electrically connected with the power box 6. The indicator light strip is used to illuminate the display area, so that the liquid level can be normally observed in dark environment.

[0026] Of course, the aforementioned L-shaped liquid level tube 2 can also be a square tube, and the corresponding heat conduction sleeve 3, heat preservation cover 5 and shell 1 are also square tube structures, which will not be described in detail in the embodiment.

[0027] Embodiment 2

[0028] As Figure 2 and Figure 4As shown, this embodiment provides a deaerator liquid level measuring device, including a housing 1 and an L-shaped liquid level tube 2 sleeved inside the housing 1. The vertical section of the L-shaped liquid level tube 2, excluding the display area, is wrapped with a heat-conducting sleeve 3. The heat-conducting sleeve 3 includes multiple countersunk holes for accommodating PTC ceramics 4, which are connected in series by wires. An insulation cover 5 is provided outside the heat-conducting sleeve 3, and the outer wall of the housing 1 is bonded to the insulation cover 5. A transparent tempered glass film is provided on the insulation cover 5 corresponding to the display area. A power supply box 6 is provided at one end of the housing 1, and the power supply box 6 is electrically connected to the PTC ceramics 4 by wires. A flange 7 is provided at the port of the horizontal section of the L-shaped liquid level tube 2. The flange 7 is used to dock with the deaerator. The horizontal section of the L-shaped liquid level tube 2 also includes a screen 8, which is a sheet-like zeolite and is embedded in the end face of the flange 7.

[0029] like Figure 4 As shown, the horizontal section of the L-shaped level tube 2 has a flange 7 at its end face for connection with the deaerator. Considering the potential for high liquid temperature inside the deaerator, which could lead to boiling over and the resulting bubbles causing the observed level reading to be higher than normal, a zeolite screen 8 is installed at the interface with the deaerator. This not only prevents the liquid entering the level tube from boiling over but also breaks up air bubbles in the liquid, thus improving the accuracy of level detection. The zeolite is nested within the flange 7 for easy installation, disassembly, and cleaning.

[0030] Similarly, in this embodiment, the aforementioned display area refers to the area used to display the liquid level height, where the observer observes the liquid level height inside the deaerator. Taking the L-shaped liquid level tube 2 as an example, the aforementioned heat-conducting sleeve 3 is configured as a cylindrical structure. The heat-conducting sleeve 3 is made of insulating material, and its outer surface countersunk holes include metal electrode plates, such as aluminum electrode plates, in addition to the PTC ceramic 4. Figure 3 As shown, the electrode plate is bonded to the two electrode surfaces of the PTC ceramic 4 with conductive adhesive and connected to the positive and negative terminals of the power supply box 6 via wires. Additionally, one side of the metal electrode plate needs to be coated with insulating varnish. Furthermore, an indicator light strip is provided at the position corresponding to the display area on the aforementioned heat-conducting sleeve 3, and the indicator light strip is electrically connected to the power supply box 6. This indicator light strip is used to illuminate the display area so that the liquid level can be observed normally in dark environments. The aforementioned L-shaped liquid level tube 2 can also be a square tube, and the corresponding heat-conducting sleeve 3, insulation cover 5, and outer shell 1 are also square tube structures; this embodiment will not elaborate further.

[0031] Finally, the utility model provides a kind of oxygen -removing device liquid level measuring device, including shell 1 and the L-shaped liquid level pipe 2 of being sleeved in the inside of shell 1, the vertical section of L-shaped liquid level pipe 2 is wrapped with heat conduction sleeve 3 except display area, heat conduction sleeve 3 includes a plurality of PTC ceramic 4 containing counterbore, PTC ceramic 4 is arranged in series by wire;Heat conduction sleeve 3 is equipped with heat preservation cover 5, shell 1 is bonded with the outer wall of heat preservation cover 5, and transparent toughened film is equipped on heat preservation cover 5 corresponding display area;The one end of shell 1 is equipped with power box 6, and power box 6 is electrically connected with PTC ceramic 4 by wire, and the port of the horizontal section of L-shaped liquid level pipe 2 is equipped with flange 7, and flange 7 is used to be connected with oxygen -removing device.The utility model mainly is in the place of display area outside the vertical section of L-shaped liquid level pipe 2 Setting heat conduction sleeve 3, heating element-PTC ceramic 4 is embedded in heat conduction sleeve 3 to heat L-shaped liquid level pipe 2, to preheat or auxiliary heating, effectively prevent the liquid level pipe from being destroyed due to the large temperature difference between inside and outside pipe, improve the use safety and service life of oxygen -removing device upper liquid level measuring device.

[0032] It should be noted that the above embodiments all belong to the same utility model concept, and the description of each embodiment has its own emphasis. If the description is not exhaustive in some embodiments, it can be referred to the description in other embodiments. Each embodiment in the specification is described in a progressive manner, and each embodiment emphasizes the differences from other embodiments. The same or similar parts between each embodiment can be referred to each other.

[0033] The above embodiments only express the implementation of the utility model, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be noted that, for ordinary skilled persons in the art, without departing from the concept of the utility model, some modifications and improvements can be made, which are within the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A deaerator level measuring device comprising a housing (1) and an L-shaped level tube (2) which is fitted inside the housing (1), characterized in that, The vertical section of the L-shaped liquid level pipe (2) is wrapped with a heat-conducting sleeve (3) except the display area, the heat-conducting sleeve (3) comprises a plurality of recesses containing PTC ceramics (4), the PTC ceramics (4) are arranged in series through wires; the heat-conducting sleeve (3) is externally provided with a heat preservation cover (5), the shell (1) is bonded with the outer wall of the heat preservation cover (5), the heat preservation cover (5) is provided with a transparent tempered film corresponding to the display area; one end of the shell (1) is provided with a power box (6), the power box (6) is electrically connected with the PTC ceramics (4) through wires, the port of the horizontal section of the L-shaped liquid level pipe (2) is provided with a flange plate (7), the flange plate (7) is used for docking with a deaerator.

2. The deaerator level measuring device of claim 1, wherein, The shell (1) comprises a waist-shaped observation hole (11), the observation hole (11) is arranged in alignment with the display area.

3. The deaerator level measuring device of claim 2, wherein, The PTC ceramics (4) are arranged in the heat-conducting sleeve (3) at equal intervals along the length direction of the vertical section of the L-shaped liquid level pipe (2).

4. The deaerator level measuring device of claim 3, wherein, The horizontal section of the L-shaped liquid level pipe (2) further comprises a screen (8), the screen (8) is a sheet-shaped zeolite, and the screen (8) is embedded in the end face of the flange plate (7).

5. The deaerator level measuring device of claim 3, wherein, The heat-conducting sleeve (3) is provided with an indicator light strip at a position corresponding to the display area, and the indicator light strip is electrically connected with the power box (6).

6. The deaerator level measuring device of claim 3, wherein, The L-shaped liquid level pipe (2) is a round pipe or a square pipe.

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