Liquid level detection device and photovoltaic kiln liquid level detection control system

Abstract

The utility model discloses a liquid level detection device and a photovoltaic kiln liquid level detection control system, and the liquid level detection device comprises a calibration assembly which comprises a calibration rod, a measuring probe and a horizontal calibration block, the measuring probe is arranged in the middle of the calibration rod and extends along the radial direction of the calibration rod, and the horizontal calibration block is movably arranged on the calibration rod; the two end parts of the calibration rod are horizontally arranged on the corresponding fixed brackets respectively; when the calibration rod is in a horizontal state, the horizontal calibration block is still on the calibration rod, and the measuring probe extends to the liquid level of the photovoltaic kiln and detects the current liquid level height of the liquid level of the photovoltaic kiln. The liquid level detection device provided by the embodiment of the utility model can accurately collect the liquid level parameters of the kiln.

Description

Technical Field

[0001] This utility model relates to the field of liquid level detection technology, and in particular to a liquid level detection device and a liquid level detection and control system for photovoltaic kilns. Background Technology

[0002] In the production and manufacturing process of photovoltaic glass, in order to ensure the stable quality of new energy photovoltaic glass products, it is necessary to ensure the stability of the liquid level in the furnace. If the liquid level in the furnace is unstable, it will affect the temperature and pressure inside the furnace, which will lead to poor dissolution of the glass liquid and affect the quality of the glass.

[0003] In existing technologies, level gauges are commonly used to collect data on the liquid level in kilns to detect whether the liquid level is stable. However, level gauges gradually deviate during long-term operation, leading to increased errors in the collected liquid level data and making it impossible to accurately detect the state of the kiln liquid level. Current methods typically involve manually adjusting the level gauge to eliminate the deviation; however, this adjustment method has a large error and makes it difficult to ensure that the level gauge remains level, resulting in errors in the collected kiln liquid level data. Utility Model Content

[0004] This utility model provides a liquid level detection device and a photovoltaic kiln liquid level detection and control system, which can accurately collect kiln liquid level parameters.

[0005] In a first aspect, this utility model provides a liquid level detection device, comprising: a calibration component including a calibration rod, a measuring probe, and a horizontal calibration block; the measuring probe is disposed in the middle of the calibration rod and extends radially along the calibration rod, and the horizontal calibration block is disposed on the calibration rod; at least two fixed supports, with the two ends of the calibration rod respectively horizontally disposed on the corresponding fixed supports; the horizontal calibration block is detachably connected to the fixed supports, and when the horizontal calibration block is connected to one of the fixed supports, the calibration rod is in a horizontal state, and the measuring probe extends toward the liquid surface of the photovoltaic kiln and detects the current liquid level height of the photovoltaic kiln liquid surface.

[0006] The liquid level detection device of this utility model has a detachable connection between the horizontal calibration block and the fixed bracket. When the horizontal calibration block and the fixed bracket are connected, the calibration rod can be quickly adjusted to a horizontal state, so that the measuring probe can accurately detect the liquid level height in the furnace. This avoids the temperature and pressure inside the furnace being affected by inaccurate detection results, and ensures the stable quality of the glass produced in the furnace.

[0007] Optionally, a limiting groove is provided at the end of the fixed bracket away from the ground. The inner wall of the limiting groove matches the shape of the outer circumference of the calibration rod, and the groove width is equal to the diameter of the calibration rod. The two ends of the calibration rod are confined within the corresponding limiting grooves.

[0008] Optionally, the fixed bracket includes a horizontal support portion, which protrudes from the opposing surfaces of the two fixed brackets; the surface of the horizontal support portion away from the ground is provided with a first horizontal limiting groove communicating with the limiting slot, and the bottom of the first horizontal limiting groove and the bottom of the limiting slot are at the same horizontal plane.

[0009] Optionally, one of the fixed brackets is provided with a horizontal fixing block, which is located on the other side surface opposite to the horizontal support part of the fixed bracket. The surface of the horizontal fixing block away from the ground is provided with a second horizontal limiting groove that communicates with the limiting slot, and the bottom of the second horizontal limiting groove is at the same level as the bottom of the limiting slot. The horizontal calibration block can be engaged with the second horizontal limiting groove, so that the calibration rod is in a horizontal state.

[0010] Optionally, the calibration assembly also includes an adjustment handle, the connecting end of which is connected to one end face of the calibration rod. When the adjustment handle is rotated, the calibration rod rotates together with the adjustment handle to adjust the angle of the measuring probe relative to the liquid surface of the photovoltaic kiln.

[0011] Optionally, the measuring probe includes a probe part, a support part, and a measuring part. The probe part is disposed on the outer peripheral surface of the middle part of the calibration rod, the measuring part is disposed on the side of the probe part away from the calibration rod and extends radially along the calibration rod, the support part is connected between the probe part and the measuring part, and the surface of the measuring part is provided with measuring scale markings.

[0012] Optionally, the calibration rod is inserted into the kiln through the overflow ports on both sides of the kiln, and at least two fixed brackets are respectively set on both sides of the kiln and corresponding to the overflow ports, so that the calibration rod is horizontal with the liquid surface of the photovoltaic kiln.

[0013] Secondly, embodiments of the present invention provide a photovoltaic kiln liquid level detection and control system. The photovoltaic kiln liquid level detection and control system includes a liquid level detection device according to any of the aforementioned embodiments of the first aspect of the present invention; and a liquid level adjustment device, including a control component, a feeding component, and a calculation component. The control component is electrically connected to the feeding component and the calculation component, and the calculation component is communicatively connected to the liquid level detection device. The calculation component is configured to calculate the liquid level difference between the current liquid level height and the target liquid level height. The control component is configured to control the feeding component to feed material into the kiln according to the liquid level difference, so that the current liquid level height returns to the target liquid level height.

[0014] The photovoltaic kiln liquid level detection and control system of this utility model includes a liquid level detection device. The liquid level detection device is detachably coupled with a horizontal calibration block and a fixed bracket. When the horizontal calibration block is connected to the fixed bracket, the calibration rod can be quickly adjusted to a horizontal state, thereby enabling the measuring probe to accurately detect the liquid level height of the kiln liquid. This allows the photovoltaic kiln liquid level detection and control system to avoid the problem of inaccurate detection results affecting the temperature and pressure inside the kiln, and ensures the stability of the glass quality produced by the kiln.

[0015] Optionally, the photovoltaic kiln liquid level detection and control system also includes a calibration storage device, which includes a storage slot and a limiting part. The shape of the storage slot matches the shape of the calibration component, so that the calibration component can be placed in the storage slot, and the limiting part abuts against the calibration component.

[0016] Optionally, the calibration storage device is provided with end scale markings and probe scale markings. The end scale markings are located on the side of the storage slot corresponding to the end of the calibration rod, and the probe scale markings are located on the side of the storage slot corresponding to the measuring probe. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of one embodiment of the liquid level detection device of this utility model when detecting the liquid level in a kiln;

[0019] Figure 2 This is a top view schematic diagram of one embodiment of the liquid level detection device of this utility model;

[0020] Figure 3 This is a side view schematic diagram of the calibration component of one embodiment of the liquid level detection device of this utility model;

[0021] Figure 4 This is a schematic diagram of the measuring probe of one embodiment of the liquid level detection device of this utility model;

[0022] Figure 5 This is a front view schematic diagram of the fixed bracket of one embodiment of the liquid level detection device of this utility model;

[0023] Figure 6 This is a left-side view of the fixed bracket of one embodiment of the liquid level detection device of this utility model;

[0024] Figure 7 This is a right-side view of the fixed bracket of one embodiment of the liquid level detection device of this utility model;

[0025] Figure 8 This is a structural block diagram of one embodiment of the photovoltaic kiln liquid level detection and control system of this utility model;

[0026] Figure 9 This is a schematic diagram of the calibration and storage device of the photovoltaic kiln liquid level detection and control system of this utility model.

[0027] Explanation of icon numbers:

[0028] 100 - Liquid level detection device;

[0029] 110 - Calibration assembly; 111 - Calibration rod; 112 - Measurement probe; 1121 - Probe section; 1122 - Support section; 1123 - Measurement section; 1124 - Measurement scale markings; 113 - Horizontal calibration block; 114 - Adjustment handle;

[0030] 120 - Fixed bracket; 121 - Limiting slot; 122 - Horizontal support; 123 - Horizontal fixing block; 124 - First horizontal limiting slot; 125 - Second horizontal limiting slot;

[0031] 200 - Liquid level adjustment device; 210 - Control component; 220 - Feeding component; 230 - Calculation component;

[0032] 300 - Calibration storage device; 310 - Storage slot; 320 - Limiting part; 330 - End scale mark; 340 - Probe scale mark;

[0033] 400 - Kiln; 410 - Overflow outlet. Detailed Implementation

[0034] 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.

[0035] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0036] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, the user should consider such a combination of technical solutions to be non-existent and not within the scope of protection claimed by this utility model.

[0037] like Figures 1 to 7 As shown in the embodiment of this utility model, the liquid level detection device 100 is used to detect the liquid level height inside the kiln 400. The liquid level detection device 100 includes: a calibration component 110 and at least two fixed supports 120.

[0038] The calibration assembly 110 includes a calibration rod 111, a measurement probe 112, and a horizontal calibration block 113. The measurement probe 112 is disposed in the middle of the calibration rod 111 and extends radially along the calibration rod 111. The horizontal calibration block 113 is disposed on the calibration rod 111.

[0039] The two ends of the calibration rod 111 are respectively horizontally mounted on the corresponding fixed brackets 120, and the horizontal calibration block 113 is detachably connected to the fixed brackets 120. When the horizontal calibration block 113 is connected to one of the fixed brackets 120, the calibration rod 111 is in a horizontal state, and the measuring probe 112 extends to the liquid surface of the photovoltaic kiln and detects the current liquid level height of the photovoltaic kiln.

[0040] In this embodiment of the invention, when the liquid level detection device 100 detects the liquid level height inside the kiln 400, the calibration rod 111 of the calibration assembly 110 passes through the kiln 400, and the measuring probe 112 is located inside the kiln 400. When the horizontal calibration block 113 is connected to the fixed bracket 120, the horizontal calibration block 113 can limit the calibration rod 111 to a horizontal state.

[0041] After the calibration rod 111 is in a horizontal position, the liquid level in the kiln 400 can be quickly measured by the measuring probe 112, and the measurement result can be generated to achieve rapid and accurate detection of the liquid level in the kiln, improve detection efficiency, and avoid the need for repeated detection due to excessive detection error.

[0042] After obtaining the measurement results, the furnace liquid level is adjusted accordingly to maintain the furnace liquid level within the optimal range, thus avoiding the impact on glass quality caused by measurement errors that could result in the furnace liquid level not being at the optimal level.

[0043] The liquid level detection device 100 of this utility model has a detachable connection between the horizontal calibration block 113 and the fixed bracket 120. When the horizontal calibration block 113 is connected to the fixed bracket 120, the calibration rod 111 can be quickly adjusted to a horizontal state, thereby enabling the measuring probe 112 to accurately detect the liquid level height of the furnace liquid surface, avoiding the influence of inaccurate detection results on the temperature and pressure inside the furnace 400, and ensuring the stable quality of the glass produced by the furnace 400.

[0044] In some embodiments, a limiting groove 121 is provided at the end of the fixed bracket 120 away from the ground. The inner wall surface of the limiting groove 121 matches the shape of the outer peripheral surface of the calibration rod 111, and the groove width of the limiting groove 121 is equal to the diameter of the calibration rod 111. The two ends of the calibration rod 111 are confined within the corresponding limiting groove 121.

[0045] In this embodiment, two fixed supports 120 are respectively disposed at the overflow ports 410 on both sides of the kiln 400. The calibration rod 111 can pass through the kiln 400 through the overflow port 410, and the two ends of the calibration rod 111 can be limited to the fixed supports 120 by the limiting slots 121, so that the fixed supports 120 can support the calibration rod 111.

[0046] The inner wall of the limiting slot 121 and the outer peripheral surface of the calibration rod 111 are smooth surfaces. Since the width of the limiting slot 121 is equal to the diameter of the calibration rod 111, the calibration rod 111 can be stably placed on the fixed bracket 120 without shaking, thus ensuring the accuracy of the test results.

[0047] In some embodiments, the fixed bracket 120 includes a horizontal support portion 122, which protrudes from the opposing surfaces of the two fixed brackets 120; the surface of the horizontal support portion 122 away from the ground is provided with a first horizontal limiting groove 124 communicating with the limiting groove 121, and the bottom of the first horizontal limiting groove 124 and the bottom of the limiting groove 121 are at the same horizontal plane.

[0048] In this embodiment, each of the two fixed brackets 120 is provided with a horizontal support part 122. When the calibration rod 111 is placed on the fixed bracket 120, the first horizontal limiting groove 124 can cooperate with the limiting slot 121 to increase the contact surface between the calibration rod 111 and the fixed bracket 120, so that the calibration rod 111 can be more stable.

[0049] In some embodiments, one of the fixed brackets 120 is provided with a horizontal fixing block 123. The horizontal fixing block 123 is disposed on the other side surface opposite to the horizontal support portion 122 of the fixed bracket 120. The surface of the horizontal fixing block 123 away from the ground is provided with a second horizontal limiting groove 125 that communicates with the limiting groove 121. The bottom of the second horizontal limiting groove 125 is at the same level as the bottom of the limiting groove 121.

[0050] The horizontal calibration block 113 can be engaged with the second horizontal limiting groove 125, so that the calibration rod 111 is in a horizontal state.

[0051] In this embodiment, when the calibration rod 111 is placed on the fixed bracket 120, the position of the horizontal fixing block 123 relative to the horizontal calibration block 113 is adjusted so that the horizontal calibration block 113 can be engaged with the second horizontal limiting groove 125 of the horizontal fixing block 123. At this time, the calibration rod 111 is fixed by the engagement of the horizontal calibration block 113 with the second horizontal limiting groove 125 and is in a horizontal state for subsequent accurate detection of the kiln liquid level.

[0052] In some embodiments, the calibration assembly 110 further includes an adjustment handle 114, the connecting end of which is connected to one end face of the calibration rod 111. When the adjustment handle 114 is rotated, the calibration rod 111 rotates together with the adjustment handle 114 to adjust the angle of the measuring probe 112 relative to the liquid surface of the photovoltaic kiln.

[0053] In this embodiment, when the calibration rod 111 is placed into the kiln 400, it is necessary to first place the calibration rod 111 horizontally so that the measuring probe 112 faces the horizontal plane. The calibration rod 111 can smoothly enter the kiln 400 and be placed on the fixed brackets 120 on both sides of the kiln 400. At this time, the measuring probe 112 is located inside the kiln 400, and the adjusting handle 114 is located outside the kiln 400. By snapping the horizontal calibration block 113 into the second horizontal limiting groove 125, the calibration rod 111 is limited, ensuring that the calibration rod 111 will not shake.

[0054] After the horizontal calibration block 113 is engaged with the second horizontal limiting groove 125, the calibration rod 111 is left stationary. After a first preset time, the adjustment handle 114 is rotated to rotate the calibration rod 111, thereby adjusting the angle of the measuring probe 112 relative to the kiln liquid surface, so that the measuring probe 112 is perpendicular to the kiln liquid surface. The calibration rod 111 is then left stationary. After a second preset time, it is confirmed whether the measuring probe 112 is still perpendicular to the kiln liquid surface. If there is a deviation, it is adjusted to be perpendicular to the kiln liquid surface. If there is no deviation, the height of the kiln liquid surface is detected. The first and second preset times can be any preset time period, such as 10s, 20s, 30s, or 35s.

[0055] When the calibration rod 111 is inside the kiln 400, its volume will change due to thermal expansion and contraction, which will cause the calibration rod 111 to shift. Therefore, the purpose of keeping the calibration rod 111 stationary is to eliminate the error caused by thermal expansion and contraction and ensure the detection accuracy of the measuring probe 112.

[0056] In some embodiments, the measuring probe 112 includes a probe portion 1121, a support portion 1122, and a measuring portion 1123. The probe portion 1121 is disposed on the outer peripheral surface of the middle part of the calibration rod 111, and the measuring portion 1123 is disposed on the side of the probe portion 1121 away from the calibration rod 111 and extends radially along the calibration rod 111. The support portion 1122 is connected between the probe portion 1121 and the measuring portion 1123, and the surface of the measuring portion 1123 is provided with a measuring scale mark 1124.

[0057] In this embodiment, the probe 1121 and the measuring part 1123 are stably connected by the support part 1122. When the calibration rod 111 is adjusted and the kiln liquid level is detected, the kiln liquid level can be detected in real time by the measuring scale mark 1124 on the surface of the measuring part 1123.

[0058] In some embodiments, the calibration rod 111 passes through the overflow ports 410 on both sides of the kiln 400 and is installed in the kiln 400. At least two fixed brackets 120 are respectively installed on both sides of the kiln 400 and correspond to the overflow ports 410, so that the calibration rod 111 is horizontal with the liquid level of the photovoltaic kiln.

[0059] In this embodiment of the invention, when the liquid level detection device 100 detects the liquid level height inside the kiln 400, the calibration rod 111 of the calibration assembly 110 passes through the overflow ports 410 on both sides of the kiln 400, and the measuring probe 112 extends towards the liquid level inside the kiln 400. The two ends of the calibration rod 111 can be placed on the fixed supports 120 on both sides of the kiln 400. The horizontal calibration block 113 can limit the calibration rod 111 to a horizontal state, enabling the measuring probe 112 to accurately detect the liquid level height in the kiln.

[0060] like Figure 8 As shown, this utility model also proposes a photovoltaic kiln liquid level detection and control system, which includes the liquid level detection device 100 and the liquid level adjustment device 200 of any of the aforementioned embodiments of this utility model.

[0061] The liquid level detection device 100 is used to detect the liquid level height inside the kiln 400. The liquid level detection device 100 includes: a calibration component 110 and at least two fixed supports 120.

[0062] The calibration assembly 110 includes a calibration rod 111, a measurement probe 112, and a horizontal calibration block 113. The measurement probe 112 is disposed in the middle of the calibration rod 111 and extends radially along the calibration rod 111. The horizontal calibration block 113 is disposed on the calibration rod 111.

[0063] The two ends of the calibration rod 111 are respectively horizontally mounted on the corresponding fixed brackets 120, and the horizontal calibration block 113 is detachably connected to the fixed brackets 120. When the horizontal calibration block 113 is connected to one of the fixed brackets 120, the calibration rod 111 is in a horizontal state, and the measuring probe 112 extends to the liquid surface of the photovoltaic kiln and detects the current liquid level height of the photovoltaic kiln.

[0064] The liquid level adjustment device 200 includes a control component 210, a feeding component 220, and a calculation component 230. The control component 210 is electrically connected to the feeding component 220 and the calculation component 230, and the calculation component 230 is communicatively connected to the liquid level detection device 100.

[0065] The calculation component 230 is configured to calculate the liquid level difference between the current liquid level and the target liquid level, and the control component 210 is configured to control the feeding component 220 to feed material into the kiln 400 according to the liquid level difference, so that the current liquid level returns to the target liquid level.

[0066] In this embodiment of the utility model, the liquid level detection device 100 detects the liquid level in the kiln and obtains the measurement result. The calculation component 230 calculates the liquid level difference between the current liquid level and the target liquid level based on the measurement result, thereby obtaining the height value that the liquid level in the kiln needs to be adjusted, and generating an adjustment command.

[0067] After receiving the adjustment command, the control component 210 controls the feeding component 220 to add the corresponding mass of material into the furnace 400 according to the liquid level difference between the current liquid level and the target liquid level, i.e. the height value that the furnace liquid level needs to be adjusted, so that the furnace liquid level is reset to the target liquid level height, thereby keeping the quality of the produced glass at its best.

[0068] Specifically, the calculation component 230 can automatically acquire the current liquid level and the target liquid level in the kiln, calculate the level difference between them, and calculate the time required for the current liquid level to recover to the target liquid level during feeding. Alternatively, the current liquid level and the target liquid level can be manually input to calculate the level difference and the time required for the current liquid level to recover to the target liquid level. When feeding the kiln 400, the feeding amount is adjusted according to the automatic liquid level control slope adjustment table to precisely control the liquid level change.

[0069] The photovoltaic furnace liquid level detection and control system of this utility model includes a liquid level detection device 100. The liquid level detection device 100 is detachably connected to the fixed bracket 120 via a horizontal calibration block 113. When the horizontal calibration block 113 is connected to the fixed bracket 120, the calibration rod 111 can be quickly adjusted to a horizontal state, thereby enabling the measuring probe 112 to accurately detect the liquid level height of the furnace liquid. This allows the photovoltaic furnace liquid level detection and control system to avoid the problem of inaccurate detection results affecting the temperature and pressure inside the furnace 400, ensuring the stable quality of the glass produced by the furnace 400.

[0070] like Figure 9 As shown, in some embodiments, the photovoltaic kiln liquid level detection and control system further includes a calibration storage device 300. The calibration storage device 300 includes a storage slot 310 and a limiting part 320. The shape of the storage slot 310 matches the shape of the calibration component 110, so that the calibration component 110 can be placed in the storage slot 310, and the limiting part 320 abuts against the calibration component 110.

[0071] In this embodiment, when the liquid level detection device 100 is not required to detect the liquid level in the kiln, the calibration component 110 of the liquid level detection device 100 is stored in the calibration storage device 300. The calibration storage device 300 has a storage slot 310 that matches the shape of the calibration component 110. When the calibration component 110 is placed in the storage slot 310, there is a movable gap between the inner wall of the storage slot 310 and the calibration component 110 to prevent damage to the calibration component 110 from external forces. Simultaneously, the limiting part 320 abuts against the adjusting handle 114 of the calibration component 110 and the connection point between the calibration rod 111 and the measuring probe 112 to limit the calibration component 110 within the storage slot 310 and prevent it from shifting. The movable gap between the inner wall of the storage slot 310 and the calibration component 110 can be 1 mm, 1.5 mm, 2 mm, or other sizes, and is not limited here.

[0072] In some embodiments, the calibration storage device 300 is provided with an end scale mark 330 and a probe scale mark 340. The end scale mark 330 is disposed on the side of the storage slot 310 corresponding to the end of the calibration rod 111, and the probe scale mark 340 is disposed on the side of the storage slot 310 corresponding to the measuring probe 112.

[0073] In this embodiment, the end scale mark 330 and the probe scale mark 340 are used to measure the change of the calibration rod 111 under standard conditions, that is, to detect whether the length of the measuring probe 112 and the standard rod has changed, so as to verify whether the zero point of the calibration component 110 has changed, to prevent the calibration component 110 from changing shape due to thermal expansion and contraction, thereby preventing errors and ensuring the reliability of the measurement results of the calibration component 110.

[0074] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A liquid level detecting device characterized by comprising: The device comprises: a calibration assembly comprising a calibration rod, a measuring probe and a horizontal calibration block, the measuring probe being arranged at the middle of the calibration rod and extending radially along the calibration rod, and the horizontal calibration block being arranged at the calibration rod; at least two fixed supports, two ends of the calibration rod being arranged horizontally at corresponding fixed supports, respectively; the horizontal calibration block is detachably connected with the fixed supports, in the state that the horizontal calibration block is connected with one of the fixed supports, the calibration rod is in a horizontal state, and the measuring probe extends to the liquid surface of the photovoltaic furnace and detects the current liquid level of the liquid surface of the photovoltaic furnace.

2. The liquid level detecting device according to claim 1, wherein The fixed support is provided with a limiting clamping groove at the end away from the ground, the inner wall surface of the limiting clamping groove is matched with the outer peripheral surface of the calibration rod, and the groove width of the limiting clamping groove is equal to the diameter of the calibration rod, and the two ends of the calibration rod are limited in the corresponding limiting clamping grooves.

3. The liquid level detection device according to claim 2, wherein The fixed support comprises a horizontal support portion, and the horizontal support portion is protruded on the opposite surfaces of the two fixed supports; the surface of the horizontal support portion away from the ground is provided with a first horizontal limiting groove in communication with the limiting clamping groove, and the groove bottom of the first horizontal limiting groove is in the same horizontal plane as the groove bottom of the limiting clamping groove.

4. The liquid level detecting device according to claim 3, wherein One of the fixed supports is provided with a horizontal fixing block, the horizontal fixing block is arranged on the other side surface away from the horizontal support portion of the fixed support, the surface of the horizontal fixing block away from the ground is provided with a second horizontal limiting groove in communication with the limiting clamping groove, and the groove bottom of the second horizontal limiting groove is in the same horizontal plane as the groove bottom of the limiting clamping groove; the horizontal calibration block can be clamped in the second horizontal limiting groove, so that the calibration rod is in a horizontal state.

5. The liquid level detecting device according to claim 1, wherein The calibration assembly further comprises an adjusting handle, the connecting end of the adjusting handle is connected with one of the end surfaces of the calibration rod, in the state that the adjusting handle rotates, the calibration rod rotates together with the adjusting handle to adjust the angle of the measuring probe relative to the liquid surface of the photovoltaic furnace.

6. The liquid level detecting device according to claim 1, wherein The measuring probe comprises a probe portion, a support portion and a measuring portion, the probe portion is arranged on the outer peripheral surface of the middle of the calibration rod, the measuring portion is arranged on the side of the probe portion away from the calibration rod and extends radially along the calibration rod, the support portion is connected between the probe portion and the measuring portion, and the surface of the measuring portion is provided with a measuring scale mark.

7. The liquid level detecting device according to any one of claims 1 to 6, wherein The calibration rod is arranged in the furnace through the overflow ports on both sides of the furnace, and at least two fixed supports are arranged on both sides of the furnace and correspond to the overflow ports, so that the calibration rod is horizontal to the liquid surface of the photovoltaic furnace.

8. A photovoltaic furnace liquid level detection control system, characterized by, The system comprises: the liquid level detection device according to any one of claims 1 to 7; and The liquid level adjusting device comprises a control assembly, a feeding assembly and a calculation assembly, the control assembly is electrically connected with the feeding assembly and the calculation assembly, the calculation assembly is communicatively connected with the liquid level detection device, the calculation assembly is configured to calculate a liquid level difference between the current liquid level and a target liquid level, and the control assembly is configured to control the feeding assembly to feed into the kiln according to the liquid level difference, so that the current liquid level returns to the target liquid level.

9. The photovoltaic furnace level detection control system of claim 8, wherein, The system further comprises a calibration storage device, the calibration storage device comprises a storage card slot and a limiting portion, the shape of the storage card slot matches the shape of the calibration assembly, so that the calibration assembly can be placed in the storage card slot, and the limiting portion is in abutment with the calibration assembly.

10. The photovoltaic furnace level detection control system of claim 9, wherein, The calibration storage device is provided with an end scale mark and a probe scale mark, the end scale mark is arranged on one side of the storage card slot corresponding to the end of the calibration rod, and the probe scale mark is arranged on one side of the storage card slot corresponding to the measurement probe.

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