Ice layer thickness detection device for water pan of air-cooled heat exchanger

Abstract

The utility model provides an ice layer thickness detection device for a water pan of an air-cooled heat exchanger, which belongs to the field of refrigeration house equipment maintenance and comprises a contact sensor, a fixing seat, a fixing device and the water pan, the contact sensor detects the thickness of an ice layer through capacitance change and sends out an electric signal, the fixing seat is fixed on the side wall of the water pan through screws, and the fixing device is fixed on the side wall of the water pan. The contact type sensor is installed on the fixing base, the contact height of the contact type sensor can be adjusted according to the ice layer control thickness, in the using process, the sensor is debugged and calibrated firstly, the ice layer is formed at the low point of the water pan after defrosting, the sensor sends a signal to a monitoring station when the thickness standard is reached, and a worker arranges deicing according to the signal. The water pan has the advantages that the structure is simple, the existing water pan can be conveniently transformed, and the maintenance efficiency of refrigeration house equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold heat exchanger equipment maintenance, and in particular to a device for detecting the thickness of ice on a water receiving tray of an air-cooled heat exchanger. Background Art

[0002] Cold storage systems that use water-defrosting air-cooled heat exchangers, mounted on the ceiling, require regular water defrosting. Frost builds thicker on the evaporating coils, directly impacting heat transfer efficiency and causing the cold storage temperature to rise. Therefore, regular water defrosting is essential. Frequent defrosting can cause ice to form in the drain pan at the bottom of the heat exchanger. If not promptly addressed, this ice can gradually clog the drain pan, preventing it from draining. Consequently, defrosting water can overflow during subsequent defrosting, contaminating or damaging the packaging within the warehouse. Because the heat exchangers are mounted on the ceiling, on-site inspections require workers to work at height. This not only requires them to navigate the cold storage's harsh environment but also presents risks associated with working at height. Furthermore, timely confirmation that the ice has reached the required de-icing thickness is impossible. The present invention designs a device for automatically detecting the thickness of the ice layer in the water receiving tray. When the ice layer in the water receiving tray reaches the thickness standard for removal, an electrical signal will be sent through the contact displacement sensor and transmitted to the monitoring station. After seeing the signal, the staff can arrange the de-icing operation of the water receiving tray in time to avoid the risk of ice blocking the drain outlet of the water receiving tray and ensure that the water receiving tray is always in good working condition. Summary of the Invention

[0003] To address the technical issue of ice clogging the drain outlet of the water tray at the bottom of an air-cooled heat exchanger due to untimely ice removal, a device for detecting ice thickness in the water tray of an air-cooled heat exchanger is provided. This device automatically detects ice thickness in the water tray. When the ice in the water tray reaches the required thickness for removal, a contact displacement sensor sends an electrical signal to a monitoring station, allowing staff to schedule de-icing operations. This eliminates the need for on-site inspections, reduces labor intensity, and mitigates the risks of height-based operations.

[0004] The technical means adopted by this utility model are as follows:

[0005] A device for detecting ice thickness in a water receiving tray of an air-cooled heat exchanger, comprising: a contact sensor, a fixing seat, a fixing device, and a water receiving tray;

[0006] When the contact point of the contact sensor contacts the ice layer being measured, an electrical signal is emitted through a change in capacitance value; a threaded hole is formed on the vertical plate of the fixing base, and the fixing base is fixed to the middle side wall of the water receiving tray through a through hole in the side wall of the water receiving tray by a fixing device;

[0007] The contact sensor is fixed on the fixing seat through the light hole in the middle of the fixing seat horizontal plate, and the height of the contact sensor contact point from the bottom surface of the water receiving tray can be adjusted according to the thickness of the ice layer in the water receiving tray.

[0008] Furthermore, the contact sensor is a capacitive sensor, which senses the thickness of the ice layer by detecting changes in capacitance value.

[0009] Furthermore, the vertical plate and the horizontal plate of the fixing seat are perpendicular to each other, and the threaded holes on the vertical plate are adapted to the fixing device.

[0010] Furthermore, the contact sensor is electrically connected to an external monitoring station, and when the contact point generates an electrical signal, the signal can be transmitted to the monitoring station.

[0011] Furthermore, the water receiving tray is a component at the bottom of the air-cooled heat exchanger for collecting defrosting water, and the low point thereof near the middle drain outlet is an area where ice is easily formed.

[0012] Due to the adoption of the above technical solution, compared with the prior art, the present invention has the following advantages:

[0013] 1. The utility model provides an ice thickness detection device for the water receiving tray of an air-cooled heat exchanger, which can timely detect the thickness of the ice layer in the water receiving tray. When the ice layer reaches the clearance thickness standard, it will send an electrical signal. The staff can arrange the de-icing operation in time accordingly, effectively avoiding the ice layer from blocking the drain outlet of the water receiving tray, ensuring that the water receiving tray is always in a good drainage state, and preventing the overflow of defrosting water from contaminating or damaging the packaging of goods in the warehouse.

[0014] 2. The utility model provides a device for detecting the thickness of ice on the water tray of an air-cooled heat exchanger. Compared with the traditional method in which workers need to enter the cold storage with a low-temperature and harsh environment from time to time to climb up and survey the thickness of the ice layer, the work risk is reduced. After adopting this device, there is no need for workers to climb up and check on site, so that operators are freed from the risks of low temperature and high-altitude operations in the cold storage, and the personal safety of workers is guaranteed.

[0015] 3. The utility model provides an ice thickness detection device for the water receiving tray of an air-cooled heat exchanger. The device has a simple structure and is easy to implement and modify the existing cold storage water receiving tray. It can accurately and timely confirm the thickness of the ice layer, making the de-icing operation arrangement more reasonable and efficient, improving the overall efficiency of the maintenance work of the air-cooled heat exchanger equipment in the cold storage, and reducing equipment failures and maintenance costs caused by ice layer problems.

[0016] Based on the above reasons, the utility model can be promoted in the field of cold and heat exchanger equipment maintenance technology. 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 following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 This is a front view of an ice thickness detection device for a water tray of an air-cooled heat exchanger according to the present invention;

[0019] Figure 2 The utility model is a side view of an ice thickness detection device for a water receiving tray of an air-cooled heat exchanger.

[0020] In the figure: 1. Contact sensor; 2. Fixing seat; 3. Fixing device; 4. Water tray; 5. Air-cooled heat exchanger. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values ​​described in these embodiments do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0025] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention: the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0026] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0027] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0028] like Figures 1 to 2 As shown, the utility model provides an ice thickness detection device for a water receiving tray of an air-cooled heat exchanger, comprising: a contact sensor 1, a fixing seat 2, a fixing device 3, and a water receiving tray 4;

[0029] When the contact point of the contact sensor 1 contacts the ice layer being measured, an electrical signal is emitted through a change in capacitance. A threaded hole is formed on the vertical plate of the fixing base 2, and the fixing base 2 is fixed to the middle side wall of the water receiving tray 4 through a through-hole in the side wall of the water receiving tray 4 by a fixing device 3.

[0030] The contact sensor 1 is fixed on the fixing base 2 through the light hole in the middle of the horizontal plate of the fixing base 2, and the height of the contact point of the contact sensor 1 from the bottom surface of the water receiving tray 4 can be adjusted according to the thickness of the ice layer in the water receiving tray 4.

[0031] Furthermore, the contact sensor 1 uses a high-precision capacitive sensor, which can sensitively send out an electrical signal through the change of capacitance value after its contacts come into contact with the measured ice layer. The fixing seat 2 is made of metal, and the vertical plate thereof is precisely machined with threaded holes, and the horizontal plate is provided with a light hole to ensure dimensional accuracy.

[0032] Furthermore, the fixing base 2 is passed through the pre-set through-hole on the side wall of the water receiving tray 4 through the fixing device 3 and fixed on the side wall in the middle of the water receiving tray 4, so that the fixing base 2 is tightly connected to the water receiving tray 4 to ensure the stability of the entire device in the harsh environment of the cold storage. Then, the contact sensor 1 is passed through the light hole in the middle of the horizontal plate of the fixing base 2 and is firmly fixed on the fixing base 2 using nuts and other accessories.

[0033] Furthermore, the vertical plate and the horizontal plate of the fixing seat 2 are perpendicular to each other, and the threaded holes on the vertical plate are adapted to the fixing device 3 .

[0034] Furthermore, the touch sensor 1 is electrically connected to an external monitoring station. When the contact point is actuated to generate an electrical signal, the signal can be transmitted to the monitoring station.

[0035] Furthermore, the water receiving tray 4 is a component at the bottom of the air-cooled heat exchanger 5 for collecting defrosting water, and the low point thereof near the middle drain outlet is an area where ice is easily formed.

[0036] Furthermore, the evaporating coil of the air-cooled heat exchanger 5 is subjected to a long-term water defrosting operation according to a predetermined cycle. After each defrosting, a layer of ice will gradually form at the low point of the water receiving pan 4 near the middle drain outlet due to the large amount of water accumulation and low temperature. When the thickness of the ice layer reaches the pre-set control height, the ice layer will accurately contact the contact of the contact sensor 1. At this time, the contact of the contact sensor 1 is actuated, and an electrical signal is generated through the change of the resistance value of the internal circuit. The electrical signal is transmitted to the monitoring station through the pre-laid wires. After receiving the electrical signal, the monitoring station immediately sends out an audible and visual alarm signal, and at the same time displays a prompt message on the display screen indicating that the ice thickness of the water receiving pan 4 has reached the clearing standard. After seeing the signal prompt, the staff will promptly organize the operators to carry de-icing tools to the corresponding position for de-icing according to the operation arrangement of the cold storage, effectively avoiding the risk of ice blocking the drain outlet of the water receiving pan 4, thereby ensuring that the water receiving pan 4 is always in a good drainage working state and maintaining the normal operation of the cold storage equipment.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for detecting ice thickness in a water tray of an air-cooled heat exchanger, characterized in that: include: Contact sensor, mounting base, fixing device, water tray; When the contact point of the contact sensor contacts the ice layer being measured, an electrical signal is emitted through a change in capacitance value; a threaded hole is formed on the vertical plate of the fixing base, and the fixing base is fixed to the middle side wall of the water receiving tray through a through hole in the side wall of the water receiving tray by a fixing device; The contact sensor is fixed on the fixing seat through the light hole in the middle of the fixing seat horizontal plate, and the height of the contact sensor contact point from the bottom surface of the water receiving tray can be adjusted according to the thickness of the ice layer in the water receiving tray.

2. The device for detecting ice thickness in a water tray of an air-cooled heat exchanger according to claim 1, characterized in that: The contact sensor is a capacitive sensor that senses the thickness of the ice layer by detecting changes in capacitance.

3. The device for detecting ice thickness in a water tray of an air-cooled heat exchanger according to claim 1, characterized in that: The vertical plate and the horizontal plate of the fixing seat are perpendicular to each other, and the threaded holes on the vertical plate are adapted to the fixing device.

4. The device for detecting ice thickness in a water tray of an air-cooled heat exchanger according to claim 1, characterized in that: The contact sensor is electrically connected to an external monitoring station. When the contact point is actuated to generate an electrical signal, the signal can be transmitted to the monitoring station.

5. The device for detecting ice thickness in a water tray of an air-cooled heat exchanger according to claim 1, characterized in that: The water receiving tray is a component at the bottom of the air-cooled heat exchanger for collecting defrosting water, and the low point near the middle drain port is an area where ice is easily formed.

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