A digital temperature indicator for thermal pipelines

Abstract

This invention discloses a digital temperature indicator for heat pipelines, relating to the field of heat transport technology. The digital temperature indicator includes a transfer pipe and a branch pipe connected to the transfer pipe. A temperature measuring tube extending into the transfer pipe is sealed inside the branch pipe. A sealing cap is provided at the opening of the branch pipe, and a temperature measuring probe inserted into the temperature measuring tube is provided on the sealing cap. The temperature measuring probe is connected to a digital display. A sliding sleeve that can slide up and down is provided on the sealing cap. A first elastic element is provided between the sliding sleeve and the sealing cap to prevent the sliding sleeve from moving downward. A locking head is also provided on the sliding sleeve. The bottom surface of the locking head is inclined and forms a guide surface. A latch is slidably provided on the transfer pipe at the bottom of the latch. The latch has an inclined surface parallel to the guide surface. A second elastic element is provided between the transfer pipe and the latch to prevent the latch from moving away from the latch.

Description

Technical Field

[0001] The invention relates to the technical field of heat transfer, in particular to a digital temperature indicating device for a heat pipe. Background Art

[0002] Geothermal energy is an energy resource generated by nuclear fission inside the earth. The temperature of lava ejected from volcanoes on the earth is as high as 1200℃~1300℃, and the temperature of natural hot springs is mostly above 60℃, and some are even as high as 100℃~140℃. This shows that the earth is a huge heat reservoir with huge thermal energy. This heat seeps out of the surface, so there is geothermal energy. Geothermal energy is a clean energy and a renewable energy, and its development prospects are very broad. In the process of developing and utilizing geothermal energy, thermal pipelines are needed to transport geothermal energy.

[0003] When a thermal pipeline is used for heat transmission, it is necessary to detect the temperature of each level of the pipeline in order to timely adjust the water temperature in each level of the pipeline. In the prior art, the temperature probe of the digital thermometer used for detecting the water temperature inside the thermal pipeline is often directly inserted into the thermal pipeline. The temperature probe is in the fluid for a long time. The impact of the fluid on the temperature probe increases the failure rate of the temperature probe. When the temperature probe is inspected or replaced, the upstream and downstream valves of the thermal pipeline need to be closed. After the temperature probe is inspected or replaced, heat transmission can be continued. In addition, the existing temperature probe is often fixed by threaded connection. Generally, after the digital display is fixed, when the temperature probe is disassembled, the wire connecting the temperature probe and the digital display needs to be rotated several times. Under the tension caused by the rotation, the wire is easily twisted off, and it is inconvenient to disassemble and install. Summary of the invention

[0004] The object of the present invention is to provide a digital temperature indicating device for a thermal pipeline. The temperature measuring probe can indirectly measure the temperature of the water flow inside the thermal pipeline. When the temperature measuring probe is inspected or replaced, there is no need to close the corresponding pipeline valve. The inspection and replacement work can be carried out under the condition of normal heat transmission. At the same time, when the temperature measuring probe is disassembled, there is no need to directly screw the temperature measuring probe itself, which is convenient for disassembly and assembly, and protects the wires connecting the temperature measuring probe and the digital display.

[0005] To achieve the above object, the present invention provides the following technical solution: a digital temperature indicating device for a thermal pipeline, comprising a transfer tube and a branch tube connected to the transfer tube, a temperature measuring tube extending into the interior of the transfer tube is sealed in the branch tube, a sealing cover is provided at the pipe mouth of the branch tube, a temperature measuring probe is provided on the sealing cover and inserted into the interior of the temperature measuring tube, and the temperature measuring probe is connected to a digital display;

[0006] The sealing cover is provided with a sliding sleeve which can slide up and down, a first elastic member for preventing the sliding sleeve from moving downward is provided between the sliding sleeve and the sealing cover, a locking head is also provided on the sliding sleeve, the bottom surface of the locking head is inclined and forms a guide surface, a locking buckle is slidingly provided on the transfer tube and located at the bottom of the locking head, an inclined surface parallel to the guide surface is provided on the locking buckle, and a second elastic member for preventing the locking buckle from moving away from the locking head is provided between the transfer tube and the locking buckle.

[0007] Preferably, the sliding sleeve is sleeved on the outer side of the sealing cover, a vertically extending guide portion is provided on the outer side of the sealing cover, and a guide groove matching the guide portion is provided on the sliding sleeve.

[0008] Preferably, the first elastic member is a tension spring arranged between the sealing cover and the sliding sleeve.

[0009] Preferably, a pedestal is provided on the transfer tube and around the branch tube, a guide seat is provided on the pedestal, a slide groove for sliding connection of the lock is provided inside the guide seat, and the second elastic member is a spring provided between the lock and the guide seat.

[0010] Preferably, a push head fixedly connected to the lock buckle is provided on the top of the guide seat.

[0011] Preferably, the sliding sleeve is further provided with an ear plate, and guard plates are provided around the sealing cover and on both sides of the ear plate.

[0012] Preferably, a liquid level tube connected to the temperature measuring tube is arranged in the transfer tube, the liquid level tube passes through the transfer tube and extends to the top of the transfer tube, a window portion is arranged on the liquid level tube and located on the outside of the transfer tube, a float is arranged in the liquid level tube, and a mark plate is arranged on the top of the float

[0013] Preferably, the temperature measuring tube and the liquid level tube are connected via a connecting tube, a tube cover is provided on the top of the liquid level tube, an air hole is provided on the tube cover, and a sponge is provided in the air hole.

[0014] Preferably, the viewing window portion is a viewing window opened on the liquid level tube, and a transparent plate is sealed in the viewing window.

[0015] Preferably, a thermal insulation film is provided on the outside of the liquid level tube; and the temperature measuring tube is made of copper.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, a temperature measuring tube is arranged inside the transfer tube, water is added inside the temperature measuring tube, and a temperature measuring probe is inserted into the water inside the temperature measuring tube. Due to the heat exchange effect, the water temperature inside the temperature measuring tube is consistent with the water temperature inside the thermal pipeline. The temperature measuring tube and the transfer tube are not connected, so when replacing and repairing the digital thermometer, there is no need to stop the water flow of the thermal pipeline, ensuring the normal operation of the thermal pipeline and the water supply efficiency, and there is no need to close the corresponding pipeline valve, and the maintenance and replacement work can be carried out under the condition of normal heat transmission.

[0018] 2. The present invention fixes the temperature probe by plugging. When the temperature probe is disassembled, there is no need to directly screw the temperature probe itself, which is convenient for disassembly and assembly, and protects the wires connecting the temperature probe and the digital display meter.

[0019] 3. The present invention can quickly disassemble and assemble the sealing cover equipped with the temperature measuring probe through the locking buckle behind the locking head, which greatly improves the efficiency of disassembly, assembly, maintenance and replacement of the temperature measuring probe compared with the traditional thread disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an appearance diagram of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the present invention;

[0022] Figure 3 It is a schematic diagram of the planar structure of the lock head and the lock buckle of the present invention;

[0023] Figure 4 It is a three-dimensional structural schematic diagram of the lock head and lock buckle of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal structure of the transfer tube of the present invention;

[0025] Figure 6 This is a diagram showing the matching mode between the temperature measuring tube, the sealing cover and the temperature measuring probe of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the temperature measuring tube of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the sealing cover of the present invention;

[0028] Fig. 9 It is a structural schematic diagram of the sliding sleeve of the present invention;

[0029] Fig.10 This is the appearance diagram of the practical liquid level tube;

[0030] Fig.11 It is a schematic diagram of the internal structure of the liquid level tube of the present invention.

[0031] In the figure:

[0032] 1- adapter tube, 11- branch pipe, 12- socket, 13- base, 14- guard plate,

[0033] 2- Temperature measuring tube,

[0034] 3-sealing cover, 31-threaded opening, 32-connecting seat, 321-cavity, 33-guide part, 34-insulation pad, 35-tension spring,

[0035] 41-temperature probe, 42-digital display,

[0036] 5-sliding sleeve, 51-locking head, 52-guide groove, 53-ear plate,

[0037] 6-lock buckle, 61-push rod, 62-push head,

[0038] 7-guide seat, 71-spring,

[0039] 8-liquid level tube, 81-window part, 82-tube cover, 83-float, 84-connecting rod, 85-marker plate,

[0040] 9-Connecting pipe. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] For the convenience of description, the coordinate system is defined as Figure 1 As shown, the left-right direction is the horizontal direction, the front-back direction is the longitudinal direction, and the up-down direction is the vertical direction.

[0043] like Figure 1-6 As shown, a digital temperature indicating device for a thermal pipeline comprises a transfer tube 1 and a branch tube 11 connected to the transfer tube 1, a temperature measuring tube 2 extending to the inside of the transfer tube 1 is sealed in the branch tube 11, a sealing cover 3 is provided at the pipe mouth of the branch tube 11, a temperature measuring probe 41 inserted into the inside of the temperature measuring tube 2 is provided on the sealing cover 3, the temperature measuring probe 41 is connected to a digital display meter 42, and the temperature measuring probe 41 and the digital display meter 42 together constitute a digital thermometer.

[0044] Specifically in this embodiment, the digital thermometer adopts the model CX-WDJ200LCD. When in use, the adapter tube 1 is connected to the thermal pipeline through the flange, and a proper amount of water is added to the temperature measuring tube 2 so that the water can submerge the temperature measuring head of the temperature measuring probe. After the sealing cover 3 is covered, when the water inside the thermal pipeline passes through the adapter tube 1, the water transfers heat to the water inside the temperature measuring tube 2 through the temperature measuring tube 2 until the water inside and outside the temperature measuring tube 2 reaches the same temperature. At this time, the temperature measured by the temperature measuring probe 41 is the water temperature in the thermal pipeline, and the temperature value is displayed on the digital display 42.

[0045] The sealing cover 3 is provided with a sliding sleeve 5 which can slide up and down, and a first elastic member for preventing the sliding sleeve 5 from moving downward is provided between the sliding sleeve 5 and the sealing cover 3. The sliding sleeve 5 is also provided with a lock head 51. Specifically in this embodiment (such as Figure 2-3 and Fig. 9 As shown in the figure, the lock head 5 is a protrusion integrally provided with the sliding sleeve 5, the bottom surface of the lock head 5 is inclined, and the inclined bottom surface forms a guide surface. A lock buckle 6 is slidably provided on the transfer tube 1 and located at the bottom of the lock head 51, and the lock buckle 6 is provided with an inclined surface parallel to the guide surface. A second elastic member is provided between the transfer tube 1 and the lock buckle 6 to prevent the lock buckle 6 from moving away from the lock head. When in use, as Figure 1 , Figure 3 , Figure 4 and Figure 7 As shown, when the sliding sleeve 5 is slid downward and pressed, under the pressure of the guide surface at the bottom of the lock head 51, the guide surface forms a lateral component thrust on the inclined surface at the top of the lock buckle 6, so that the lock buckle 6 moves away from the lock head 51 until the lock head 51 moves to the bottom of the lock buckle 6. At this time, under the reaction force of the second elastic member, the lock buckle 6 is rebounded back to the working position and is located at the top of the lock head 51. At this time, the top surface of the lock head 51 and the bottom surface of the lock buckle are in contact to prevent the lock head 51 from rebounding. Under the reaction force of the first elastic member, the sealing cover 3 is tightly pressed against the branch pipe 11 to form a seal. When opening the sealing cover, the lock buckle 6 is driven away from the lock head 51. After the lock buckle 6 is separated from the lock head 51, under the pulling force of the first elastic member, the sliding sleeve 5 moves upward to the original position, and the sliding sleeve 5 is located above the lock buckle 6. At this time, the driving force on the lock buckle 6 is canceled, and the lock head 51 is still separated from the lock buckle, and the sealing cover 3 can move freely up and down.

[0046] As a specific implementation method, Figure 2 , Figure 8 and Fig. 9As shown, the sliding sleeve 5 is sleeved on the outer side of the sealing cover 3, and a vertically extending guide portion 33 is provided on the outer side of the sealing cover 3. The sliding sleeve 5 is provided with a guide groove 52 that matches the guide portion 33. The guide portion 33 and the guide groove 52 play a sliding guide and limit role, preventing the sliding sleeve 5 from rotating and ensuring that the sliding sleeve 5 moves up and down stably.

[0047] Specifically in this embodiment, Figure 2 and Figure 8 As shown, the first elastic member is a tension spring 35 disposed between the sealing cover 3 and the sliding sleeve. Specifically in this embodiment, a connecting seat 32 is disposed on the outer side of the sealing cover 3, and a cavity 321 for accommodating the tension spring 35 is disposed on the connecting seat 32. One end of the tension spring 35 is fixedly connected to the connecting seat 32, and the other end is connected to the sliding sleeve 5.

[0048] Specifically in this embodiment, Figure 1 , Figure 3 and Figure 4 As shown, a pedestal 13 is arranged on the transfer tube 1 and around the branch tube 11, a guide seat 7 is arranged on the pedestal 13, and a slide groove (not shown in the figure) for sliding connection of the lock buckle 6 is arranged inside the guide seat 7. The second elastic member is a spring 71 arranged between the lock buckle 6 and the guide seat 7.

[0049] Furthermore, if Figure 4 As shown, in order to facilitate the movement of the lock buckle 6, a push head 62 fixedly connected to the lock buckle 6 is provided on the top of the guide seat 7. Specifically in this embodiment, a guide hole (not shown) communicating with the internal slide groove of the guide seat 7 is provided on the top of the guide seat 7, and a push rod passing through the guide hole and extending to the top of the guide seat 7 is provided on the top of the lock buckle 6, and the push head 62 is fixed to the top of the push rod 61. In this way, the movement of the lock buckle 6 can be adjusted by driving the push head 62.

[0050] Preferably, the tension spring 35 and the lock head 51 are arranged two and symmetrically on both sides of the sealing cover 3 to increase the uniformity of the force when the sliding sleeve 5 slides up and down.

[0051] Furthermore, if Figure 1 , Figure 2 and Fig. 9 As shown, the sliding sleeve 5 is also provided with an ear plate 53, and guard plates 14 are provided around the sealing cover 3 and on both sides of the ear plate 53. The purpose of this design is: first, the guard plates 14 form a protective effect on the sealing cover 3, and secondly, the two guard plates 14 are respectively located on both sides of the ear plate 53, and the gap between the guard plates 14 forms a guiding effect on the ear plate 53, so that the sliding sleeve 5 can slide up and down stably. The ear plates are used to facilitate the up and down movement of the sealing cover 3.

[0052] Specifically in this embodiment, Figure 6 and Figure 8 As shown, the top of the sealing cover 3 is provided with a threaded opening 31, and the temperature measuring probe 41 passes through the threaded opening and extends to the bottom of the sealing cover 3 and is connected to the threaded opening 31 through a thread. The temperature measuring probe 41 commonly used in the market generally has a threaded connector, for example, the digital display thermometer model CX-WDJ200LCD in this embodiment has a temperature measuring probe 41 with a threaded connector.

[0053] Preferably, Figure 8 As shown, a heat preservation pad 34 is arranged inside the sealing cover 3 and around the threaded opening 31 to increase the heat preservation and sealing between the sealing cover and the temperature measuring tube 2 and reduce the heat loss of the water flow in the thermal pipeline from the pipe opening of the temperature measuring tube 2.

[0054] like Figure 5 , Figure 6 , Figure 7 , Fig.10 and Fig.11 As shown, a level tube 8 connected to the temperature measuring tube 2 is provided in the transfer tube 1, and the level tube 8 passes through the transfer tube 1 and extends to the top of the transfer tube 1. A window portion 81 is provided on the level tube 8 and located on the outside of the transfer tube 1. A float 83 is provided in the level tube 8, and a mark plate 85 is provided on the top of the float 83. Specifically in this embodiment, a socket 12 is provided on the transfer tube 1, and the level tube 8 is inserted into the transfer tube 1 through the socket, and is sealed and connected to the transfer tube 1 by welding. In this way, the water inside the temperature measuring tube 2 can enter the level tube 8, and under the buoyancy of the float 83, the mark plate 85 floats on the liquid level of the water inside the level tube 8. The position of the mark plate 85 inside the level tube 8 can be checked through the window portion 81 to judge the water level inside the temperature measuring tube 2. When the water level is too low, water is added to the temperature measuring tube 2 to ensure that there is enough water inside the temperature measuring tube 2 for the temperature measuring probe 41 to measure the temperature.

[0055] Preferably, the temperature measuring tube 2 and the liquid level tube 8 are connected by a connecting tube 9, and a tube cover 82 is provided on the top of the liquid level tube 8. The tube cover 82 is provided with air holes (not marked in the figure), and a sponge (not marked in the figure) is provided in the air holes. In this way, while ensuring that the liquid level tube 8 is connected to the atmosphere and the air pressure is balanced, the loss of water inside the temperature measuring tube 2 is minimized.

[0056] As a specific implementation, the viewing window 81 is a viewing window opened on the liquid level tube 8, and a transparent plate is sealed in the viewing window. Specifically, the transparent plate can be made of transparent glass or acrylic. Preferably, a scale mark is set on the transparent plate to facilitate the staff to make a specific judgment on the water level inside the temperature measuring tube 2.

[0057] Preferably, an insulation film is provided on the outside of the liquid level tube 8 to reduce heat loss of the thermal duct.

[0058] Specifically in this embodiment, the temperature measuring tube 2 is made of copper material. Metal copper has good thermal conductivity and can quickly realize heat transfer between the water inside the temperature measuring tube 2 and the water flow inside the thermal pipe. At a fast speed, the water temperature inside the temperature measuring tube 2 is the same as the water temperature inside the thermal pipe.

[0059] Working principle: When in use, the transfer tube 1 is connected to the thermal pipeline through the flange, and the digital display 42 is connected to the external power supply. Add an appropriate amount of water to the temperature measuring tube 2 so that the water can submerge the temperature measuring head of the temperature measuring probe. After covering the sealing cover 3, slide and press the sliding sleeve 5 downward. Under the pressure of the guide surface at the bottom of the lock head 51, the guide surface forms a lateral component thrust on the inclined surface at the top of the lock buckle 6, so that the lock buckle 6 moves away from the lock head 51 until the lock head 51 moves to the bottom of the lock buckle 6. At this time, under the reaction force of the second elastic member, the lock buckle 6 is rebounded back to the working position and located at the top of the lock head 51. At this time, the top surface of the lock head 51 is in contact with the bottom surface of the lock buckle to prevent the lock head 51 from rebounding. Under the reaction force of the first elastic member, the sealing cover 3 is tightly pressed on the branch pipe 11 to form a seal. At this time, the temperature measuring probe 41 is inserted into the water inside the temperature measuring tube 2. When the water inside the thermal pipe passes through the transfer tube 1, the water transfers heat to the water inside the temperature measuring tube 2 through the temperature measuring tube 2 until the water inside and outside the temperature measuring tube 2 reaches the same temperature. At this time, the temperature measured by the temperature measuring probe 41 is the water temperature in the thermal pipe, and the temperature value is displayed on the digital display 42.

[0060] By observing the position of the mark plate 85 inside the liquid level tube 8, the amount of water inside the temperature measuring tube 8 can be determined. When water needs to be added or the temperature measuring probe 41 needs to be repaired, the sealing cover is opened first. When opened, the lock buckle 6 is driven away from the lock head 51. After the lock buckle 6 is separated from the lock head 51, the sliding sleeve 5 moves upward to the original position under the pulling force of the first elastic member. The sliding sleeve 5 is located above the lock buckle 6. At this time, the driving force on the lock buckle 6 is canceled, and the lock head 51 is still separated from the lock buckle. The sealing cover 3 can move freely up and down. After removing the sealing cover, water can be directly added to the temperature measuring tube 2 or the temperature measuring probe 41 can be repaired.

[0061] When it is necessary to replace the digital thermometer composed of the temperature measuring probe 41 and the digital display meter 42, the temperature measuring probe 41 is screwed off from the thread port 31 to replace the new temperature measuring probe.

[0062] Since the temperature measuring pipe 2 and the adapter pipe 1 are not connected, when replacing the digital thermometer, there is no need to stop the water flow of the thermal pipeline, ensuring the normal operation of the thermal pipeline and the water supply efficiency.

[0063] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A digital temperature indicating device for a thermal pipeline, characterized in that: It comprises a transfer tube and a branch tube connected to the transfer tube, wherein a temperature measuring tube extending into the interior of the transfer tube is sealed in the branch tube, a sealing cover is provided at the tube mouth of the branch tube, a temperature measuring probe inserted into the interior of the temperature measuring tube is provided on the sealing cover, and the temperature measuring probe is connected to a digital display; The sealing cover is provided with a sliding sleeve that can slide up and down, a first elastic member for preventing the sliding sleeve from moving downward is provided between the sliding sleeve and the sealing cover, a lock head is also provided on the sliding sleeve, the bottom surface of the lock head is inclined and forms a guide surface, a lock buckle is slidably provided on the transfer tube and located at the bottom of the lock head, an inclined surface parallel to the guide surface is provided on the lock buckle, and a second elastic member for preventing the lock buckle from moving away from the lock head is provided between the transfer tube and the lock buckle; The temperature measuring tube is provided with water for submerging the temperature measuring head of the temperature measuring probe, and the water is used for heat exchange with the water passing through the transfer tube; A liquid level tube connected to the temperature measuring tube is arranged in the transfer tube, the liquid level tube passes through the transfer tube and extends to the top of the transfer tube, a window portion is arranged on the liquid level tube and located on the outside of the transfer tube, a float is arranged in the liquid level tube, and a mark plate is arranged on the top of the float; The temperature measuring tube and the liquid level tube are connected by a connecting tube, a tube cover is provided on the top of the liquid level tube, an air hole is provided on the tube cover, and a sponge is provided in the air hole; The viewing window portion is a viewing window opened on the liquid level tube, and a transparent plate is sealed in the viewing window. The water inside the temperature measuring tube enters the liquid level tube. Under the buoyancy of the float, the mark plate floats on the liquid level of the water inside the liquid level tube. The position of the mark plate inside the liquid level tube can be checked through the viewing window portion to determine the water level height inside the temperature measuring tube.

2. A digital temperature indicating device for a thermal pipeline according to claim 1, characterized in that: The sliding sleeve is sleeved on the outer side of the sealing cover, a vertically extending guide portion is arranged on the outer side of the sealing cover, and a guide groove matched with the guide portion is arranged on the sliding sleeve.

3. A digital temperature indicating device for a thermal pipeline according to claim 1, characterized in that: The first elastic member is a tension spring arranged between the sealing cover and the sliding sleeve.

4. A digital temperature indicating device for a thermal pipeline according to claim 1, characterized in that: A pedestal is arranged on the transfer tube and around the branch tube, a guide seat is arranged on the pedestal, a slide groove for sliding connection of the lock is arranged inside the guide seat, and the second elastic member is a spring arranged between the lock and the guide seat.

5. A digital temperature indicating device for a thermal pipeline according to claim 4, characterized in that: A push head fixedly connected to the lock buckle is arranged on the top of the guide seat.

6. A digital temperature indicating device for a thermal pipeline according to claim 1, characterized in that: The sliding sleeve is also provided with an ear plate, and guard plates are provided around the sealing cover and on both sides of the ear plate.

7. A digital temperature indicating device for a thermal pipeline according to claim 1, characterized in that: The outside of the liquid level tube is provided with a heat preservation film; the temperature measuring tube is made of copper.

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