Glass plate liquid level gauge and liquid level measurement method

Abstract

The present invention relates to the technical field of liquid level gauges, and proposes a glass plate liquid level gauge and a liquid level measurement method, comprising an outer cover, a main pipe and a glass plate, wherein an observation hole is provided on the peripheral side of the outer cover; the main pipe passes through and is fixedly arranged in the outer cover, and a connecting groove is provided on the peripheral side thereof; the glass plate is fixedly arranged in the observation hole; the glass plate passes through the main pipe; a plurality of annular grooves are provided in the main pipe, and the plurality of annular grooves are arranged at intervals along the axial direction of the main pipe, and the end of the annular groove close to the glass plate is located below the end away from the glass plate, and the lower part of the cross section of the annular groove is low in the middle and high on both sides. The present invention arranges an inclined annular groove in the main pipe, and passes the glass plate through the main pipe, so that the mist on the inner wall of the main pipe can be quickly gathered into water droplets, and the surface of the glass plate is cleaned by using the water droplets, so that the glass plate always remains clear, thereby ensuring the normal use of the liquid level gauge.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid level gauges, and in particular to a glass plate liquid level gauge and a liquid level measurement method. Background Art

[0002] A glass plate level gauge is a device used to directly indicate the liquid level in a sealed container. It uses a transparent glass plate as an observation window and is connected to the sealed container through a flange, so that the level gauge and the sealed container form a communicating vessel, thereby being able to directly observe the liquid level in the container.

[0003] The invention with announcement number CN103712666B discloses a high-temperature and high-pressure glass plate level gauge, comprising a substrate, a glass plate and a pressure plate, wherein the pressure plate seals and presses the glass plate onto the substrate, and transverse reinforcing wires are distributed in the glass plate, and a jacket is formed in the pressure plate, and the jacket is provided with a high-temperature medium inlet and a high-temperature medium outlet; the invention implants reinforcing wires into the glass plate according to its stress conditions, and cooperates with the glass to bear stress, thereby improving the strength of the glass plate, and the glass plate itself can not only enhance the effect of bearing high pressure, but also can apply a larger tightening force during installation, increase the pre-tightening force of the sealing gasket, thereby improving the sealing performance, and is more suitable for high-temperature and high-pressure containers; the high-temperature medium is introduced into the pressure plate to reduce the temperature difference between the inside and outside of the glass plate, thereby reducing the deformation stress caused by the temperature difference, increasing the uniformity of the force on the sealing surface, while avoiding the problem of glass plate breakage or cracking caused by the temperature difference, and extending the service life of the glass plate.

[0004] In the above technical solution, in order to enable the glass plate level gauge to adapt to high temperature and high pressure working conditions, the structure of the glass plate was strengthened and modified to avoid the glass plate from breaking or cracking. However, the high temperature medium in the level gauge will produce mist, which will adhere to the surface of the glass plate, affecting the clarity of the glass plate and making it difficult for the operator to accurately judge the liquid level height in the level gauge. Summary of the invention

[0005] In view of this, the present invention proposes a glass plate liquid level gauge and a liquid level measurement method, which can improve the clarity of the glass plate and ensure the normal use of the liquid level gauge.

[0006] The technical solution of the present invention is implemented as follows: On the one hand, the present invention provides a glass plate level gauge, comprising an outer cover, a main pipe and a glass plate, wherein an observation hole is opened on the circumferential side of the outer cover; the main pipe passes through and is fixedly arranged in the outer cover, and a connecting groove is opened on the circumferential side thereof, and the connecting groove is connected with the observation hole; the glass plate is fixedly arranged in the observation hole; the glass plate passes through the main pipe; a plurality of annular grooves are arranged in the main pipe, and the plurality of annular grooves are arranged at intervals along the axial direction of the main pipe, and the end of the annular groove close to the glass plate is located below the end thereof away from the glass plate, and the lower part of the cross section of the annular groove is low in the middle and high on both sides.

[0007] On the basis of the above technical solution, preferably, the main pipe includes a groove pipe and a lower end pipe, wherein the groove pipe passes through and is fixed on the top side of the outer cover and is communicated with the interior thereof, the relative position of the groove pipe and the outer cover is adjustable, and the connecting groove and the annular groove are both arranged on the groove pipe; the lower end pipe passes through and is fixedly arranged on the bottom side of the outer cover and is communicated with the interior thereof.

[0008] More preferably, the groove tube includes multiple ring plates, each of which is a circular ring structure with a C-shaped cross-section, and the end of the ring plate away from the glass plate is located above the end of the ring plate close to the glass plate, and the multiple ring plates are arranged in abutment along the direction of the center line of the outer cover, the lower end of the ring plate is fixedly set on the side of the ring plate located below it away from the center line of the outer cover, and is spaced from the top of the ring plate located below it, and two adjacent ring plates enclose the annular groove; the connecting groove passes through the multiple ring plates located below, and the side of the glass plate close to the center line of the ring plate is located inside the ring plate.

[0009] More preferably, it also includes a sealing soft sleeve, which is fixedly arranged on the top side of the outer cover and abutted against the outer side of the ring plate; the distance between the position on the outer side of the ring plate located in the middle of the lower ends of two adjacent ring plates and the center line of the outer cover is greater than the distance between other positions on the outer side of the ring plate and the center line of the outer cover, the distance between the position on the outer side of the ring plate located at its lower end and the center line of the outer cover is less than the distance between other positions on the outer side of the ring plate and the center line of the outer cover, and the distance between the end of the ring plate away from the glass plate and the end of the ring plate close to the glass plate in the direction of the center line of the outer cover is x=ny / 2, wherein y is the distance between two adjacent ring plates in the direction of the center line of the outer cover, and n is a positive odd number.

[0010] On the basis of the above technical solution, preferably, the outer cover includes a main box, a front end plate, a rear end plate and an adjustment mechanism, wherein the groove tube passes through and is slidably arranged on the main box, and the lower end tube passes through and is fixedly arranged on the main box; the front end plate is abutted against one side of the main box, the observation hole is opened in the main box and the front end plate, and the glass plate is abutted between the main box and the front end plate; the rear end plate is fixedly arranged on a side of the main box away from the front end plate, and is detachably fixedly connected to the front end plate; the adjustment mechanism is used to fix the groove tube to the main box.

[0011] More preferably, a sliding hole is provided on a side of the main box away from the front end plate, the rear end plate blocks the sliding hole, a mounting hole is provided in the rear end plate, and the mounting hole is communicated with the sliding hole; the adjusting mechanism comprises a slider, a rotating rod, a screw and a spring, wherein the slider is fixedly arranged on the slot tube and slidably arranged in the sliding hole, and a plurality of threaded holes are provided on a side away from the slot tube along the direction of the center line of the slot tube; the rotating rod is rotatably arranged in the mounting hole; one end of the screw is slidably arranged on the rotating rod, and the other end can be connected to one of the threaded holes by threaded cooperation; the spring is fixedly arranged on the rotating rod, and one end of the spring is abutted against an end of the screw away from the slider.

[0012] More preferably, a groove is provided on the side wall of the mounting hole; the adjusting mechanism also includes a limiting ring and a plurality of sealing rings, the limiting ring is fixedly arranged on the rotating rod and located in the groove, the plurality of sealing rings are respectively fixedly arranged on the two ends and the circumference of the limiting ring, the sealing rings located at the two ends of the limiting ring are spaced apart from the inner wall of the groove, and the sealing ring located on the circumference of the limiting ring is abutted against the inner wall of the groove.

[0013] On the basis of the above technical solution, preferably, the main pipe also includes two transverse pipes, the top end of the groove pipe and the bottom end of the lower end pipe are blocked, one end of the two transverse pipes is respectively fixed on the groove pipe and the lower end pipe and is connected to the inside thereof, and the end of the transverse pipe connected to the groove pipe close to the groove pipe is located below the end thereof away from the groove pipe.

[0014] More preferably, a communicating hole is formed at one end of the top side of the ring plate close to the glass plate, and two ends of the communicating hole are respectively connected to two adjacent ring grooves.

[0015] In a second aspect, the present invention provides a method for measuring the liquid level of a glass plate liquid level gauge, using the above-mentioned glass plate liquid level gauge, comprising the following steps: S1, adjusting the relative position of the groove tube and the outer cover so that the spacing between the two transverse tubes adapts to the interface on the container to be measured; S2, sealingly connecting the ends of the two transverse tubes away from the outer cover to the two interfaces on the container to be measured; S3, installing a reading scale on the glass plate and calibrating the installation height of the reading scale; S4, recording the liquid level in the container to be measured according to the data on the reading scale corresponding to the liquid level line on the glass plate.

[0016] A glass plate liquid level gauge and a liquid level measurement method of the present invention have the following beneficial effects compared with the prior art: by arranging an inclined annular groove in the main pipe and passing the glass plate through the main pipe, the mist on the inner wall of the main pipe can be quickly gathered into water droplets, and the surface of the glass plate can be cleaned by using the water droplets, so that the glass plate always remains in a clear state, thereby ensuring the normal use of the liquid level gauge; by arranging the main pipe to include a groove pipe and a lower end pipe, and arranging an adjustment mechanism, the main pipe can be adapted to containers to be tested of different specifications, thereby improving the adaptability of the liquid level gauge; by arranging an inclined horizontal pipe, the water vapor above the inside of the container to be tested can flow into the main pipe after liquefaction, so as to balance the temperature of the medium in the main pipe and reduce the detection error of the liquid level gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The present invention is a stereoscopic diagram of a glass plate liquid level gauge and a liquid level measurement method.

[0019] Figure 2 The present invention is a cross-sectional view of a glass plate liquid level gauge and a liquid level measurement method.

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 The present invention provides a stereoscopic diagram of a groove tube in a glass plate liquid level gauge and a liquid level measurement method.

[0022] Figure 5 for Figure 2 Enlarged view of point B in the middle.

[0023] Figure 6The present invention provides a cross-sectional view of a sealing soft sleeve in a glass plate liquid level gauge and a liquid level measurement method.

[0024] Figure 7 The present invention discloses an exploded view of an outer cover of a glass plate liquid level gauge and a liquid level measurement method.

[0025] Figure 8 It is a stereoscopic view of one side of the rear end plate of a glass plate liquid level gauge and a liquid level measurement method of the present invention.

[0026] Fig. 9 for Figure 2 Enlarged view of point C in the middle.

[0027] Fig.10 The present invention provides a cross-sectional view of a transfer rod in a glass plate liquid level gauge and a liquid level measurement method.

[0028] Fig.11 The present invention provides a three-dimensional diagram of a slide block in a glass plate liquid level gauge and a liquid level measurement method.

[0029] Fig.12 The present invention provides a three-dimensional diagram of a transfer rod in a glass plate liquid level gauge and a liquid level measurement method.

[0030] Fig.13 The present invention is a cross-sectional view of a trough in a glass plate liquid level gauge and a liquid level measurement method.

[0031] Among them: 1. Outer cover; 11. Main box; 12. Front end plate; 13. Rear end plate; 14. Adjustment mechanism; 141. Slider; 142. Rotating rod; 143. Screw; 144. Spring; 145. Limiting ring; 146. Sealing ring; 101. Observation hole; 102. Sliding hole; 103. Mounting hole; 104. Threaded hole; 105. Sink; 2. Main pipe; 21. Grooved pipe; 22. Lower end pipe; 211. Ring plate; 23. Horizontal pipe; 201. Connecting groove; 202. Ring groove; 203. Connecting hole; 3. Glass plate; 4. Sealing soft sleeve. DETAILED DESCRIPTION

[0032] The following will be combined with the specific implementation of the present invention to clearly and completely describe the technical solution in the present invention. Obviously, the described implementation is only a part of the implementation of the present invention, not all of the implementation. Based on the implementation of the present invention, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figure 1-13 As shown, a glass plate liquid level gauge of the present invention comprises an outer cover 1, a main pipe 2, a glass plate 3 and a sealing soft sleeve 4.

[0034] like Figure 1 and Figure 2 As shown, the outer cover 1 is a frame structure with a cavity inside, and is arranged in the vertical direction. The main pipe 2 passes through and is fixedly arranged in the outer cover 1, and the glass plate 3 is fixedly arranged in an observation hole 101 opened on the peripheral side of the outer cover 1. A connecting groove 201 connected to the observation hole 101 is opened on the peripheral side of the main pipe 2. When the upper and lower ends of the main pipe 2 are connected to the container to be tested, not only can the liquid medium in the container to be tested be introduced into the main pipe 2, but also the liquid level in the main pipe 2 can be kept consistent with the liquid level in the container to be tested; at the same time, the liquid medium in the main pipe 2 can flow into the outer cover 1 through the connecting groove 201, and the operator can directly observe through the glass plate 3 that the liquid level of the liquid medium in the outer cover 1 is flush with the liquid level in the main pipe 2 and the liquid level in the container to be tested, thereby realizing the judgment of the liquid level in the container to be tested.

[0035] When the liquid level gauge is used in high-temperature working conditions such as a steam drum, the temperature of the liquid medium is relatively high, and the liquid medium will evaporate, vaporize, and liquefy in the main pipe 2, so that some fog will adhere to the surface of the glass plate 3 located inside the outer cover 1 and the inner walls of the outer cover 1 and the main pipe 2. The fog on the glass plate 3 will reduce the transparency of the glass plate 3, making it difficult for the operator to clearly see the true position of the liquid level, which will affect the operator's judgment of the liquid level height. Therefore, it is very necessary to eliminate the fog on the surface of the glass plate 3 for the normal use of the liquid level gauge.

[0036] To this end, the glass plate 3 is passed through the main pipe 2, and an annular groove 202 is provided in the main pipe 2, such as Figure 3 As shown, the annular groove 202 is an annular groove structure, and one end of the annular groove 202 close to the glass plate 3 is located below the end thereof away from the glass plate 3, and the lower part of the cross section of the annular groove 202 is low in the middle and high on both sides. As the amount of mist attached to the inner wall of the main pipe 2 increases, the mist will gather into water droplets, which first flow from the side wall of the annular groove 202 to the bottom of the annular groove 202, then flow to one end of the annular groove 202 close to the glass plate 3, and finally flow directly to the surface of the glass plate 3 or above the glass plate 3, so as to rinse the surface of the glass plate 3, remove the water mist or impurities on the surface of the glass plate 3, keep the glass plate 3 in a clean state at all times, enable the operator to clearly observe the internal situation of the liquid level gauge, and ensure the normal use of the liquid level gauge.

[0037] In order to improve the cleaning efficiency of the glass plate 3, it is preferred to set a plurality of annular grooves 202, and the plurality of annular grooves 202 are arranged at intervals along the axial direction of the main pipe 2, so that more water droplets can rinse the glass plate 3. The water droplets in some annular grooves 202 flow directly to the surface of the glass plate 3, while the water droplets in some annular grooves 202 first flow to the top of the glass plate 3 and then flow to the surface of the glass plate 3.

[0038] The temperature of the liquefied water droplets is relatively low. When the water droplets rinse the glass plate 3, the glass plate 3 can also be cooled, thereby reducing the temperature difference between the inside and outside of the glass plate 3, avoiding problems such as the glass plate 3 being broken due to a large temperature difference, and effectively extending the service life of the glass plate 3.

[0039] like Figure 2 As shown, the main pipe 2 includes a groove pipe 21, a lower end pipe 22 and two transverse pipes 23. The groove pipe 21 passes through and is fixed on the top side of the outer cover 1 and is connected with the interior thereof. The connecting groove 201 and the annular groove 202 are both arranged on the groove pipe 21. The lower end pipe 22 passes through and is fixed on the bottom side of the outer cover 1 and is connected with the interior thereof. The two ends of the main pipe 2 are arranged as two independent components, and the relative position of the groove pipe 21 and the outer cover 1 or the relative position of the lower end pipe 22 and the outer cover 1 is adjustable, so that the main pipe 2 can be adapted to containers to be tested of different specifications, thereby improving the adaptability of the liquid level gauge. In practical applications, the warning when the medium content in the container to be tested is less is more important than the warning when the medium content in the container to be tested is more. Therefore, it is preferred to make the relative position of the groove pipe 21 and the outer cover 1 adjustable so that the glass plate 3 is at a lower position.

[0040] like Figure 2 As shown, the top end of the groove tube 21 and the bottom end of the lower end tube 22 are blocked by a cover plate, one end of the two transverse tubes 23 are fixedly arranged on the side walls of the groove tube 21 and the lower end tube 22, respectively, and the two transverse tubes 23 are respectively connected with the inside of the groove tube 21 and the lower end tube 22. When the two transverse tubes 23 are connected with the container to be measured, the groove tube 21 and the lower end tube 22 can always be kept in a vertical state, so that the liquid level line is perpendicular to the length direction of the glass plate 3, so as to observe the liquid level line and increase the observation range of the liquid level meter.

[0041] In order to facilitate the processing of the grooved tube 21, the grooved tube 21 is configured to include a plurality of ring plates 211, such as Figure 3 As shown, the ring plate 211 is a ring structure with a C-shaped cross section. The ring plate 211 is tilted, and its end away from the glass plate 3 is located above its end close to the glass plate 3, and multiple ring plates 211 are arranged in abutment along the direction of the center line of the outer cover 1. The lower end of the ring plate 211 is fixedly arranged on the side of the ring plate 211 located below it away from the center line of the outer cover 1, and is spaced from the top of the ring plate 211 located below it. By stacking and welding multiple ring plates 211 in sequence, the groove tube 21 can be quickly processed, and two adjacent ring plates 211 are allowed to enclose the annular groove 202.

[0042] The connecting groove 201 passes through the multiple ring plates 211 located at the bottom, and one side of the glass plate 3 close to the center line of the ring plate 211 passes through the connecting groove 201 and is located inside the ring plate 211. After the mist gathers on the inner wall of the ring plate 211 to form water droplets, the water droplets in the multiple ring plates 211 located at the bottom directly flow to the surface of the glass plate 3 to clean the mist and impurities on the glass plate 3; while the water droplets in the multiple ring plates 211 located at the top are first retained in the corresponding ring groove 202, and after the liquid level of the retained water body submerges one side of the ring groove 202, it flows downward to the top of the glass plate 3, and its efficiency is relatively low. For this reason, a connecting hole 203 is opened at one end of the top side of the ring plate 211 close to the glass plate 3, such as Figure 5 As shown, the two ends of the communicating hole 203 are respectively connected to two adjacent annular grooves 202 , so that the water drops in the plurality of annular plates 211 located above can also quickly flow onto the glass plate 3 .

[0043] The position where the top side of the glass plate 3 extends into the ring plate 211 is horizontal, so that the water drops falling to this position can flow evenly to the surface of the glass plate 3. Similarly, the upper end of the glass plate 3 can be chamfered to make the edge of its top smooth to speed up the flow of water drops.

[0044] The sealing sleeve 4 is used to seal the connection gap between the groove tube 21 and the outer cover 1. The sealing sleeve 4 is made of elastic materials such as rubber and silicone. Figure 1 As shown, the sealing soft sleeve 4 is fixedly arranged on the top side of the outer cover 1 and is arranged against the outer side of the ring plate 211, so as to prevent the medium inside the liquid level meter from leaking out along the connection gap between the groove pipe 21 and the outer cover 1.

[0045] like Figure 5 As shown, since the cross-section of the ring plate 211 is C-shaped, the outer wall of the groove tube 21 is in a continuously changing concave-convex shape. This structure increases the contact area between the groove tube 21 and the outside, which is beneficial to improving the heat dissipation efficiency of the groove tube 21, thereby accelerating the liquefaction rate of water vapor in the groove tube 21, that is, accelerating the formation efficiency of water droplets, and improving the cleaning efficiency of the glass plate 3.

[0046] It is preferred that the distance between the position between the lower ends of two adjacent ring plates 211 on the outer side of the ring plate 211 and the center line of the outer cover 1 is greater than the distance between the other positions on the outer side of the ring plate 211 and the center line of the outer cover 1, and the distance between the position at the lower end of the outer side of the ring plate 211 and the center line of the outer cover 1 is smaller than the distance between the other positions on the outer side of the ring plate 211 and the center line of the outer cover 1, so that the outer diameter of the grooved tube 21 can be uniformly increased or decreased. Figure 5As shown, if the spacing between the end of the ring plate 211 away from the glass plate 3 and the end of the ring plate 211 close to the glass plate 3 in the center line direction of the outer cover 1 is x, and the spacing between two adjacent ring plates 211 in the center line direction of the outer cover 1 is y, when following the formula x=ny / 2 (n is a positive odd number), the raised position on the left side of the outer wall of the groove tube 21 and the recessed position on the right side of the outer wall can be on the same horizontal plane, and the recessed position on the left side of the outer wall of the groove tube 21 and the raised position on the right side of the outer wall can also be on the same horizontal plane. When the groove tube 21 moves up and down, the left and right sides of the inner wall of the sealing soft sleeve 4 against which the groove tube 21 abuts change in the same direction, which can reduce the expansion or contraction of the sealing soft sleeve 4, thereby helping to extend the service life of the sealing soft sleeve 4.

[0047] In some embodiments, n=5, so that the spacing between the end of the ring plate 211 away from the glass plate 3 and the end of the ring plate 211 close to the glass plate 3 in the center line direction of the outer cover 1 is 2.5 times the spacing between two adjacent ring plates 211 in the center line direction of the outer cover 1, so that the water droplets gathered in the annular groove 202 can quickly flow to the end of the annular groove 202 close to the glass plate 3.

[0048] In order to facilitate the processing of the ring plate 211, it is preferred that the ring plate 211 is a circular ring structure. When processing the groove tube 21, the ring plate 211 is first tilted, and then multiple ring plates 211 are stacked and welded. Figure 6 As shown, the annular ring plate 211 is tilted and elliptical in top view, so that the cross section of the groove tube 21 is elliptical, thereby preventing the groove tube 21 and the outer cover 1 from rotating, which has a good promoting effect on the sealing performance of the two.

[0049] like Figure 7 and Figure 8 As shown, in order to facilitate maintenance of the device, the outer cover 1 is configured to include a main box 11, a front end plate 12, a rear end plate 13 and an adjusting mechanism 14, the groove tube 21 penetrates and is slidably set on the main box 11, the lower end tube 22 penetrates and is fixedly set on the main box 11, the front end plate 12 is set against one side of the main box 11, the observation hole 101 is opened in the main box 11 and the front end plate 12, and the glass plate 3 is set against between the main box 11 and the front end plate 12, the rear end plate 13 is fixedly set on the side of the main box 11 away from the front end plate 12, and is detachably fixedly connected to the front end plate 12, and the adjusting mechanism 14 is used to fix the groove tube 21 to the main box 11; in order to allow the glass plate 3 to be stably held between the main box 11 and the front end plate 12, it is preferred that the cross section of the glass plate 3 is T-shaped.

[0050] like Fig. 9 As shown, a sliding hole 102 is provided on one side of the main box 11 away from the front plate 12, and the rear plate 13 blocks the sliding hole 102. A mounting hole 103 is provided in the rear plate 13, and the mounting hole 103 is connected to the sliding hole 102. Fig.10 As shown, the adjustment mechanism 14 includes a slider 141, a rotating rod 142, a screw 143 and a spring 144. The slider 141 is fixedly arranged on the groove tube 21 and slidably arranged in the sliding hole 102. A plurality of threaded holes 104 are opened on the side away from the groove tube 21 along the direction of the center line of the groove tube 21. The rotating rod 142 is rotatably arranged in the mounting hole 103. One end of the screw 143 is slidably arranged on the rotating rod 142, and the other end can be connected with one of the threaded holes 104 through threaded matching. The spring 144 is fixedly arranged on the rotating rod 142, and one end of the spring 144 is abutted against one end of the screw 143 away from the slider 141. When the groove tube 21 slides, the screw 143 is connected with one of the threaded holes 104. 04, due to the influence of the thread, the screw 143 will not enter the threaded hole 104, and the screw 143 can be screwed into the threaded hole 104 by rotating the rotating rod 142 and the support of the spring 144 on the screw 143, so as to fix the groove tube 21. When the groove tube 21 needs to be adjusted, the rotating rod 142 is rotated in the opposite direction to disengage the screw 143 from the threaded hole 104. In this process, although the screw 143 not only rotates but also moves along its axial direction, the rotating rod 142 only rotates and does not move along its axial direction, which is conducive to maintaining the sealing between the rotating rod 142 and the rear end plate 13, thereby avoiding the leakage of the liquid medium inside the liquid level meter.

[0051] like Fig.12 and Fig.13 As shown, a recessed groove 105 is provided on the side wall of the mounting hole 103, and the adjustment mechanism 14 further includes a limiting ring 145 and a plurality of sealing rings 146. The limiting ring 145 is fixedly arranged on the rotating rod 142 and is located in the recessed groove 105. The cooperation between the limiting ring 145 and the recessed groove 105 can prevent the rotating rod 142 from being separated from the rear end plate 13. The plurality of sealing rings 146 are respectively fixedly arranged at both ends and on the peripheral side of the limiting ring 145. The sealing rings 146 located on the peripheral side of the limiting ring 145 abut against the inner wall of the recessed groove 105, thereby improving the sealing performance of the adjustment mechanism 14. Fig.13 As shown, the sealing rings 146 located at both ends of the limiting ring 145 are spaced apart from the inner wall of the sink 105. When the rotating rod 142 is damaged and can move along its axial direction, under a natural state, the pressure of the liquid medium inside the liquid level gauge will force the rotating rod 142 and the limiting ring 145 to move to the right, so that the sealing ring 146 at the right end of the limiting ring 145 abuts against the inner wall of the sink 105. When the rotating rod 142 is rotated, the abutment of the rotating tool on the rotating rod 142 will cause the rotating rod 142 to move to the left, so that the sealing ring 146 at the left end of the limiting ring 145 abuts against the inner wall of the sink 105, effectively improving the sealing performance of the rotating rod 142 and the rear end plate 13, and avoiding the problem of medium leakage.

[0052] The elastic force exerted by the spring 144 on the screw rod 143 is relatively small. When the rotating rod 142 is rotated, no matter whether the screw rod 143 is aligned with the threaded hole 104 or not, it will not cause a large pressure on the groove tube 21, thereby achieving a certain protective effect.

[0053] like Figure 2 As shown, the transverse tube 23 connected to the groove tube 21 is arranged obliquely, and the end of the transverse tube 23 close to the groove tube 21 is located below the end away from the groove tube 21. During the use of the liquid level gauge, the water vapor above the container to be measured can flow into the groove tube 21 along the upper transverse tube 23 after liquefaction. This water body can also rinse the glass plate 3 to improve the clarity of the glass plate 3. At the same time, the temperature of the liquefied medium in the container to be measured is relatively high, which is also beneficial to increase the temperature of the medium inside the liquid level gauge, reduce the temperature difference between the liquid level gauge and the medium in the container to be measured, and help improve the accuracy of the liquid level height of the liquid level gauge.

[0054] The present invention provides a method for measuring liquid level of a glass plate liquid level gauge, comprising the following steps: S1, adjusting the relative position of the groove tube 21 and the outer cover 1 by rotating a rotating rod 142 and sliding the groove tube 21, so that the spacing between the two transverse tubes 23 is adapted to the interface on the container to be measured; S2, sealingly connecting the ends of the two transverse tubes 23 away from the outer cover 1 to the two interfaces on the container to be measured; S3, installing a reading scale on the glass plate 3, and calibrating the installation height of the reading scale; S4, recording the liquid level in the container to be measured according to the data on the reading scale corresponding to the liquid level line on the glass plate 3.

[0055] The above description is only a preferred embodiment of the present invention and is 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

1. A glass plate liquid level gauge, comprising an outer cover (1), a main pipe (2) and a glass plate (3), wherein: An observation hole (101) is provided on the peripheral side of the outer cover (1); The main pipe (2) passes through and is fixedly arranged in the outer cover (1), and a connecting groove (201) is provided on the peripheral side thereof, and the connecting groove (201) is connected to the observation hole (101); The glass plate (3) is fixedly arranged in the observation hole (101); The feature is that: the glass plate (3) penetrates into the main pipe (2); A plurality of annular grooves (202) are arranged in the main pipe (2), and the plurality of annular grooves (202) are arranged at intervals along the axial direction of the main pipe (2). An end of the annular groove (202) close to the glass plate (3) is located below an end thereof away from the glass plate (3), and a cross section of the annular groove (202) is low in the middle and high on both sides.

2. A glass plate level gauge according to claim 1, characterized in that: The main pipe (2) comprises a groove pipe (21) and a lower end pipe (22), wherein: The grooved tube (21) penetrates and is fixed on the top side of the outer cover (1) and is connected to the interior of the outer cover (1); the relative position of the grooved tube (21) and the outer cover (1) is adjustable, and the connecting groove (201) and the annular groove (202) are both arranged on the grooved tube (21); The lower end tube (22) penetrates through and is fixedly arranged on the bottom side of the outer cover (1), and is in communication with the interior thereof.

3. A glass plate level gauge as claimed in claim 2, characterized in that: The groove tube (21) comprises a plurality of ring plates (211), the ring plates (211) being an annular structure with a C-shaped cross section, the end of the ring plate (211) away from the glass plate (3) being located above the end of the ring plate (211) close to the glass plate (3), and the plurality of ring plates (211) being arranged in contact with each other along the direction of the center line of the outer cover (1), the lower end of the ring plate (211) being fixedly arranged on a side of the ring plate (211) located below it away from the center line of the outer cover (1), and being spaced apart from the top end of the ring plate (211) located below it, and two adjacent ring plates (211) enclosing the annular groove (202); The connecting groove (201) penetrates through the plurality of ring plates (211) located below, and a side of the glass plate (3) close to the center line of the ring plate (211) is located inside the ring plate (211).

4. A glass plate liquid level gauge as claimed in claim 3, characterized in that: It also comprises a sealing soft sleeve (4), wherein the sealing soft sleeve (4) is fixedly arranged on the top side of the outer cover (1) and is arranged in contact with the outer side of the ring plate (211); The distance between a position on the outer side of the ring plate (211) located in the middle of the lower ends of two adjacent ring plates (211) and the center line of the outer cover (1) is greater than the distance between other positions on the outer side of the ring plate (211) and the center line of the outer cover (1); the distance between a position on the outer side of the ring plate (211) located at its lower end and the center line of the outer cover (1) is smaller than the distance between other positions on the outer side of the ring plate (211) and the center line of the outer cover (1); the distance between an end of the ring plate (211) away from the glass plate (3) and an end of the ring plate (211) close to the glass plate (3) in the direction of the center line of the outer cover (1) is x=ny / 2, wherein y is the distance between two adjacent ring plates (211) in the direction of the center line of the outer cover (1), and n is a positive odd number.

5. A glass plate level gauge as claimed in claim 2, characterized in that: The outer cover (1) comprises a main box (11), a front end plate (12), a rear end plate (13) and an adjustment mechanism (14), wherein: The grooved tube (21) penetrates and is slidably arranged on the main box (11), and the lower end tube (22) penetrates and is fixedly arranged on the main box (11); The front end plate (12) is disposed against a side of the main box (11), the observation hole (101) is provided in the main box (11) and the front end plate (12), and the glass plate (3) is disposed against between the main box (11) and the front end plate (12); The rear end plate (13) is fixedly arranged on a side of the main box (11) away from the front end plate (12), and is detachably fixedly connected to the front end plate (12); The adjustment mechanism (14) is used to fix the groove tube (21) and the main box (11).

6. A glass plate level gauge as claimed in claim 5, characterized in that: A sliding hole (102) is provided on a side of the main box (11) away from the front plate (12); the rear plate (13) blocks the sliding hole (102); a mounting hole (103) is provided in the rear plate (13); and the mounting hole (103) is communicated with the sliding hole (102); The adjustment mechanism (14) comprises a slider (141), a rotating rod (142), a screw rod (143) and a spring (144), wherein: The sliding block (141) is fixedly arranged on the groove tube (21) and slidably arranged in the sliding hole (102), and a plurality of threaded holes (104) are formed on a side away from the groove tube (21) along the direction of the center line of the groove tube (21); The rotating rod (142) is rotatably disposed in the mounting hole (103); One end of the screw rod (143) is slidably disposed on the rotating rod (142), and the other end can be connected to one of the threaded holes (104) through threaded engagement; The spring (144) is fixedly arranged on the rotating rod (142), and one end of the spring is in contact with an end of the screw rod (143) away from the sliding block (141).

7. A glass plate liquid level gauge as claimed in claim 6, characterized in that: A recessed groove (105) is provided on the side wall of the mounting hole (103); The adjustment mechanism (14) further comprises a limit ring (145) and a plurality of sealing rings (146); the limit ring (145) is fixedly arranged on the rotating rod (142) and is located in the sink groove (105); the plurality of sealing rings (146) are respectively fixedly arranged at both ends and on the peripheral side of the limit ring (145); the sealing rings (146) at both ends of the limit ring (145) are spaced from the inner wall of the sink groove (105); and the sealing rings (146) located on the peripheral side of the limit ring (145) are in contact with the inner wall of the sink groove (105).

8. A glass plate level gauge according to any one of claims 2 to 7, characterized in that: The main pipe (2) further comprises two transverse pipes (23), the top end of the grooved pipe (21) and the bottom end of the lower end pipe (22) being blocked, one end of the two transverse pipes (23) being fixedly arranged on the grooved pipe (21) and the lower end pipe (22) respectively and being connected to the interior thereof, and the end of the transverse pipe (23) connected to the grooved pipe (21) close to the grooved pipe (21) is located below the end thereof away from the grooved pipe (21).

9. A glass plate liquid level gauge as claimed in claim 4, characterized in that: A communication hole (203) is provided at one end of the top side of the ring plate (211) close to the glass plate (3), and two ends of the communication hole (203) are respectively connected to two adjacent ring grooves (202).

10. A method for measuring the liquid level of a glass plate liquid level gauge, using the glass plate liquid level gauge as claimed in claim 8, characterized in that: The following steps are involved: S1, adjusting the relative position of the grooved tube (21) and the outer cover (1) so that the distance between the two transverse tubes (23) is adapted to the interface on the container to be tested; S2, sealingly connecting one end of the two transverse tubes (23) away from the outer cover (1) to two interfaces on the container to be tested; S3, installing a reading scale on the glass plate (3), and calibrating the installation height of the reading scale; S4, recording the height of the liquid level in the container to be measured according to the data on the reading scale corresponding to the liquid level line on the glass plate (3).

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