Active emergency self-anti-freezing fire hydrant for cold region
By setting up an active heating method of inner core heating parts and temperature sensors in the fire hydrant body, the problem of fire hydrant freezing in the cold area is solved, rapid heating and continuous insulation are achieved, and the emergency performance of fire hydrant is improved.
Patent Information
- Application Number
- CN202422361309.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-27
AI Technical Summary
Existing fire hydrants are prone to freezing in cold areas. The existing anti-freezing methods are mostly passive, which occupy space and has no obvious anti-freezing effect, so they cannot be quickly thawed in emergency situations.
An active emergency self-anti-freezing fire hydrant is designed. The inner core heating part realizes active heating and insulation of the fire hydrant body through a temperature sensor and a controller. The inner core heating part includes a heating sleeve and a heat storage capsule, which can be heated quickly when needed and continue to be insulated after power is cut off.
It realizes the active anti-freezing of the fire hydrant body, avoids freezing and cracking, saves space and can quickly thaw in emergency situations, improves the emergency response speed, and is suitable for different low-temperature environments.
Smart Images
Figure CN223151278U_ABST
Abstract
Description
Technical Field
[0001] The utility model specifically relates to an active emergency self - antifreeze fire hydrant for cold regions. Background Art
[0002] A fire hydrant is an important device in the urban fire protection system, used for fire extinguishing and rescue. An outdoor fire hydrant is a water supply facility installed on the fire - fighting water supply network outside a building. It is mainly used for fire trucks to draw water from the municipal water supply network or the outdoor fire - fighting water supply network to implement fire extinguishing, and can also be directly connected to a hose and a water gun to discharge water for fire extinguishing. The main purpose of the daily maintenance of an outdoor fire hydrant is to ensure that even if the fire hydrant is not used for a long time, it can be in a normal use state in case of emergency and has good performance. Under normal temperature conditions, relevant treatments such as daily inspection, cleaning, fastening, lubrication, replacement of vulnerable parts, and safety warning for the outdoor fire hydrant can be carried out. However, for outdoor fire hydrants in winter or cold regions, there is an additional maintenance work, which is antifreeze treatment. Since there will be residual water inside the outdoor fire hydrant after detection or use, it is easy to freeze in the cold winter, damaging the fire hydrant. Especially when the valve flap contacts water, it is more likely to be damaged after the water freezes. Currently, most antifreeze methods are passive. Generally, heat - preservation facilities are built around the outdoor fire hydrant, such as covering with a waterproof cloth, to prevent cold air from entering. At the same time, snow - melting agents can be scattered around the fire hydrant to prevent water from freezing. At night, a wind - blocking barrier can be built with materials such as colored tarpaulins to increase the temperature around the fire hydrant. Antifreeze liquid is also applied. Applying antifreeze liquid on the surface of the outdoor fire hydrant can effectively reduce the temperature and prevent water from freezing. The antifreeze liquid needs to be replaced regularly to ensure the antifreeze effect. Whether it is covering with a waterproof cloth or applying antifreeze liquid, they are all passive antifreeze measures for the fire hydrant, occupying the space around the fire hydrant or having limited antifreeze effects, and the antifreeze effect is not obvious. In case of an emergency, there may still be a situation where the internal structure is frozen and not discovered in time, affecting its use. Currently, the fire hydrant itself does not have a way to thaw quickly and emergently. Summary of the Invention
[0003] To overcome the defects existing in the prior art, the present invention provides an active emergency self - antifreeze fire hydrant for cold regions to solve the above problems.
[0004] An active emergency self - antifreeze fire hydrant for cold regions, the active self - antifreeze fire hydrant is an integrated active self - antifreeze fire hydrant. The integrated active self - antifreeze fire hydrant includes a fire hydrant body and an inner core heating element. An inner core heating element is provided on the inner wall of the main valve body of the fire hydrant body. The inner core heating element includes a heating sleeve. The heating sleeve is coaxially arranged inside the main valve body, and the outer circumferential wall of the heating sleeve is tightly attached to the inner circumferential wall of the main valve body. The inner core heating element is cooperatively provided with a control component. The control component includes an upper temperature sensor, a lower temperature sensor, a controller, and a power connection terminal. The upper temperature sensor and the lower temperature sensor are respectively connected to the power connection terminal through the controller. The upper temperature sensor is arranged radially through the main valve body and the heating sleeve, and the lower temperature sensor is arranged radially through the main valve body and the heating sleeve. The power connection terminal passes through the main valve body and is connected to the heating sleeve.
[0005] As a preferred solution: The heating sleeve includes an outer sleeve and a heat storage capsule sheet, and the heat storage capsule sheet is arranged inside the outer sleeve.
[0006] As a preferred solution: The heat storage capsule sheet is a phase change material chip.
[0007] As a preferred solution: A lining sleeve is cooperatively arranged inside the main valve body. An annular groove is machined on the inner wall of the main valve body along its circumferential direction. The inner core heating element is arranged in the annular groove. The lining sleeve is coaxially arranged on the inner circumferential wall of the inner core heating element, and both ends of the lining sleeve are respectively connected to the inner walls on both sides of the annular groove.
[0008] As a preferred solution: The upper temperature sensor is arranged near the upper end of the heating sleeve, and the lower temperature sensor is arranged near the lower end of the heating sleeve.
[0009] As a preferred solution: The upper temperature sensor and the lower temperature sensor have the same structure. The upper temperature sensor is a dual - probe sensor. The upper temperature sensor includes an outer probe, an inner probe, a main connection piece, and a sheet - shaped processor. The main connection piece is arranged vertically. The outer probe and the inner probe are respectively connected to the outside and the inside of the main connection piece. A sheet - shaped processor is arranged inside the main connection piece. The outer probe and the inner probe respectively pass through the main connection piece and are connected to the sheet - shaped processor. The sheet - shaped processor is electrically connected to the controller.
[0010] As a preferred solution: The height of the heating sleeve is less than the height of the main valve body, and the heating sleeve is located between the hose connection and the drain valve in the main valve body.
[0011] An active emergency self - anti - freezing fire hydrant for cold regions, the active self - anti - freezing fire hydrant is a detachable active self - anti - freezing fire hydrant. The detachable active self - anti - freezing fire hydrant includes a fire hydrant body, an inner core heating element and a lining sleeve. The fire hydrant body includes an upper valve body and a lower valve body, the upper valve body and the lower valve body are coaxially connected in sequence from top to bottom, the lower end of the upper valve body is detachably connected to the upper end of the lower valve body. A lining sleeve is coaxially arranged inside the lower valve body, and an annular outer convex rib is integrally connected to the outer wall of the bottom end of the lining sleeve. The lining sleeve is connected to the inner wall of the bottom end of the lower valve body through the annular outer convex rib. An annular clamping gap is formed between the inner wall of the lower valve body and the outer wall of the lining sleeve, and an inner core heating element is arranged in the annular clamping gap. The inner core heating element is tightly attached to the inner wall of the lower valve body and the outer wall of the lining sleeve respectively.
[0012] As a preferred solution: The inner core heating element includes a heating sleeve, and the heating sleeve is equipped with a control component. The control component includes an upper temperature sensor, a lower temperature sensor, a controller and a power connection terminal. The upper temperature sensor and the lower temperature sensor are respectively connected to the power connection terminal through the controller. The upper temperature sensor is arranged in the radial direction of the lower valve body between the lower valve body and the heating sleeve, and the lower temperature sensor is arranged in the radial direction of the lower valve body between the lower valve body and the heating sleeve. The power connection terminal passes through the lower valve body and is connected to the heating sleeve.
[0013] The beneficial effects of the present utility model are as follows:
[0014] The present utility model is an outdoor fire hydrant that can start heating and anti - freezing as needed by itself. While ensuring the basic use performance of the outdoor fire hydrant, through the mutual cooperation between the fire hydrant body and the inner core heating element, it can realize the processes of starting heating, heat storage and heat preservation inside the fire hydrant body as needed, heat and keep warm the inside of the fire hydrant body. The anti - freezing method is direct and directly acts on the inside of the fire hydrant body. In addition, the positional relationship between the fire hydrant body and the inner core heating element can also achieve the effect that the fire hydrant body provides circumferential protection for the inner core heating element and does not expose it. The non - exposed setting form of the inner core heating element not only facilitates the penetration of the heat generated by it into the fire hydrant body, but also can store heat by itself, ensuring the continuous penetration of heat after power failure, delaying the heat preservation time, avoiding the occurrence of freezing and cracking, and prolonging the development cycle of anti - freezing inside the fire hydrant body. The present utility model does not occupy the surrounding space position of the fire hydrant body, nor does it require external wrapping for temporary protection of the fire hydrant body, reducing the complexity of anti - freezing operations, and can also start maintenance regularly or as needed, saving energy.
[0015] The present utility model can be used for the rapid thawing process in emergency situations, facilitating the acceleration of thawing, improving the emergency response speed, enhancing the emergency performance of the fire hydrant in low - temperature environments, and can also be used for regular daily maintenance heating, facilitating the avoidance of freezing and cracking.
[0016] The utility model has two structural forms. One is an integrated active self-anti-freezing fire hydrant, and the other is a detachable active self-anti-freezing fire hydrant. The integrated active self-anti-freezing fire hydrant can be used in areas with relatively low temperatures, and the detachable active self-anti-freezing fire hydrant can be used in cold regions or other ultra-low temperature regions. Brief Description of the Drawings
[0017] Figure 1 It is the first front view structural schematic diagram of the integrated active self-anti-freezing fire hydrant;
[0018] Figure 2 It is the rear view structural schematic diagram of the integrated active self-anti-freezing fire hydrant;
[0019] Figure 3 It is the second front view structural schematic diagram of the integrated active self-anti-freezing fire hydrant, in which a part of the straight body in the main valve body is in a cut-open state;
[0020] Figure 4 It is the three-dimensional structural schematic diagram of the heating sleeve;
[0021] Figure 5 For Figure 4 The enlarged structural schematic diagram at position A in;
[0022] Figure 6 It is the three-dimensional structural schematic diagram of the upper temperature sensor;
[0023] Figure 7 It is the front view structural schematic diagram of the detachable active self-anti-freezing fire hydrant;
[0024] Figure 8 It is the front view structural schematic diagram of the connection relationship between the upper valve body and the lower valve body;
[0025] Figure 9 For Figure 8 The sectional structural schematic diagram of B-B in;
[0026] Figure 10 For Figure 3 The enlarged structural schematic diagram at position C in.
[0027] In the figure: 1 - Fire hydrant body; 1-1 - Main valve body; 1-2 - Hose interface; 1-3 - Drain valve; 1-4 - Upper valve body; 1-5 - Lower valve body; 1-6 - Valve stem; 2 - Inner core heating element; 2-1 - Heating sleeve; 2-1-1 - Outer sleeve; 2-1-2 - Heat storage capsule sheet; 3 - Upper temperature sensor; 3-1 - Outer probe; 3-2 - Inner probe; 3-3 - Main connecting piece; 3-4 - Sheet processor; 4 - Lower temperature sensor; 6 - Power connection end; 7 - Inner lining sleeve; 8 - Ring-shaped outer convex rib; 9 - Ring-shaped clamping gap; 10 - Upper flange; 11 - Lower flange; 13 - First isolation sleeve; 16 - Outer protective cover. Detailed implementation mode
[0028] The following uses specific specific examples to illustrate the implementation mode of the present utility model. Those skilled in the art can easily understand other advantages and effects of the present utility model from the content disclosed in this specification. The present utility model can also be implemented or applied through other different specific implementation modes, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present utility model.
[0029] Detailed implementation mode one: Combined with Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 10 to illustrate this implementation mode. In this implementation mode, the integrated active self - antifreeze fire hydrant includes a fire hydrant body 1 and an inner core heating element 2. An inner core heating element 2 is arranged on the inner wall of the main valve body 1 - 1 of the fire hydrant body 1. The inner core heating element 2 includes a heating sleeve 2 - 1. The heating sleeve 2 - 1 is coaxially arranged in the main valve body 1 - 1. The installation position of the inner core heating element 2 is in the middle and lower part of the fire hydrant body 1 where freezing and cracking are most likely to occur. The outer circumferential wall of the heating sleeve 2 - 1 is closely attached to the inner circumferential wall of the main valve body 1 - 1. The inner core heating element 2 is cooperatively provided with a control component. The control component includes an upper temperature sensor 3, a lower temperature sensor 4, a controller, and a power connection terminal 6. The upper temperature sensor 3 and the lower temperature sensor 4 are respectively connected to the power connection terminal 6 through the controller. The upper temperature sensor 3 is arranged between the main valve body 1 - 1 and the heating sleeve 2 - 1. The lower temperature sensor 4 is arranged between the main valve body 1 - 1 and the heating sleeve 2 - 1. The upper temperature sensor 3 is used to obtain the temperature of the inner and outer walls of the main valve body 1 - 1, the temperature of the inner core heating element 2, and the temperature around the valve stem 1 - 6 in the main valve body 1 - 1 from the top position of the main valve body 1 - 1. The lower temperature sensor 4 is used to obtain the temperature of the inner and outer walls of the main valve body 1 - 1, the temperature of the inner core heating element 2, and the temperature around the valve stem 1 - 6 in the main valve body 1 - 1 from the bottom position of the main valve body 1 - 1. The power connection terminal 6 passes through the main valve body 1 - 1 and is connected to the heating sleeve 2 - 1.
[0030] In this implementation mode, the power connection terminal 6 provides a power connection position for an external power source. The power connection terminal 6 can be an outward - protruding terminal or an internal - built terminal. When the power connection terminal 6 is an outward - protruding terminal, it is flush with the outer wall of the main valve body 1 - 1. When the power connection terminal 6 is an internal - built terminal, it is flush with the outer wall of the heating sleeve 2 - 1, and it cooperates with the outer wall of the main valve body 1 - 1 to form an inner - concave structure, which is beneficial to concealing the power connection position.
[0031] The electrical control principle among the upper temperature sensor 3, the lower temperature sensor 4, the controller and the power connection terminal 6 is the same as the working principle among the existing temperature sensor, controller and power supply terminal. The controller can also be equipped with an alarm. The upper temperature sensor 3 and the lower temperature sensor 4 collect stable signals and transmit them to the controller. The controller energizes the heating sleeve 2-1 through the power connection terminal 6. When the temperature reaches the set value or after the set temperature value lasts for a predetermined period, the upper temperature sensor 3 and the lower temperature sensor 4 collect stable signals again and transmit them to the controller. The controller controls the power connection terminal 6 or notifies the operator to cut off the power through the existing alarm.
[0032] The power connection terminal 6 is arranged on the outer wall of the main valve body 1-1. The power connection terminal 6 is connected to the heating sleeve 2-1 through internal lines. An outer protective cover 16 for covering the power connection terminal 6 is also arranged on the outer wall of the main valve body 1-1. When the power connection terminal 6 is in use, just remove it to expose the power connection terminal 6. When the power connection terminal 6 is not in use, it is buckled on the power connection terminal 6 for shielding and protection.
[0033] In this embodiment, the control component composed of the controller and the alarm can be arranged inside the main valve body 1-1 or externally arranged, and is used when connected to the upper temperature sensor 3, the lower temperature sensor 4 and the power connection terminal 6 together with the external power supply.
[0034] In this embodiment, the upper temperature sensor 3 and the lower temperature sensor 4 obtain temperature information from different positions and are used as reference data for subsequent related heating operations.
[0035] In this embodiment, the inner core heating element 2 in the integrated active self-anti-freezing fire hydrant is not detachable and can be directly attached and fixed during the casting of the fire hydrant body 1. It is not detachable during later use, which is beneficial to improving the heating efficiency of the inner core heating element 2 for attached heating, and the emergency heating and anti-freezing effect is obvious. It can be used in areas with a low temperature environment of 0 to -10 degrees.
[0036] Specific Embodiment 2: This embodiment is a further limitation of Specific Embodiment 1. In this embodiment, the upper temperature sensor 3 and the lower temperature sensor 4 can also obtain temperature data in an isolated manner. Specifically, the upper temperature sensor 3 is arranged between the main valve body 1-1 and the heating sleeve 2-1 through the first isolation sleeve 13. The first isolation sleeve 13 is a circular sleeve, which is used to isolate the upper temperature sensor 3 when it is arranged in the heating sleeve 2-1 to avoid the temperature of the heating sleeve 2-1 interfering with the detected temperature of the upper temperature sensor 3. The upper temperature sensor 3 is mainly used to detect the ambient temperature at the bottom outer wall of the fire hydrant body 1 and the internal temperature at the bottom of the fire hydrant body 1. The lower temperature sensor 4 is mainly used to detect the ambient temperature at the top outer wall of the fire hydrant body 1 and the internal temperature at the top of the fire hydrant body 1. The first isolation sleeve 13 is used to isolate the upper temperature sensor 3 from the heating sleeve 2-1. Similarly, the lower temperature sensor 4 is arranged between the main valve body 1-1 and the heating sleeve 2-1 through the second isolation sleeve. The structural form of the second isolation sleeve is the same as that of the first isolation sleeve 13, and the functions are the same. Other relevant heat insulation measures can also be replaced.
[0037] Specific Embodiment 3: This embodiment is a further limitation of Specific Embodiment 1 or 2. The heating sleeve 2-1 is a heating sleeve formed by using metal wires as resistors, which is formed by enclosing an existing resistance wire heating net. Its working principle is the same as that of the existing resistance wire heating net.
[0038] Specific Embodiment 4: This embodiment is a further limitation of Specific Embodiment 1 or 2. In this embodiment, the heating sleeve 2-1 includes an outer sleeve 2-1-1 and a heat storage capsule sheet 2-1-2, and the heat storage capsule sheet 2-1-2 is arranged inside the outer sleeve 2-1-1.
[0039] Furthermore, the heat storage capsule sheet 2-1-2 is a flexible sheet filled with a phase change material, which plays a role in heating up, heat storage and heat preservation, and realizes gradual heat conduction and heat preservation inside the fire hydrant body 1. Even in the case of power failure, it can maintain a continuous heat preservation state, which is beneficial for the fire hydrant body 1 to start preheating emergently or as needed. It can also be started regularly at intervals in a low-temperature environment to maintain an antifreeze state.
[0040] Specific Embodiment 5: This embodiment is a further limitation of Specific Embodiment 1, 2, 3 or 4. In this embodiment, a lining sleeve 7 is arranged in the main valve body 1-1 in a matching manner. An annular groove is machined on the inner wall of the main valve body 1-1 along its circumferential direction. The inner core heating element 2 is arranged in the annular groove. The lining sleeve 7 is coaxially arranged on the inner circumferential wall of the inner core heating element 2, and both ends of the lining sleeve 7 are respectively connected to the inner walls on both sides of the annular groove.
[0041] Embodiment Six: This embodiment is a further limitation of Embodiment Four. The upper temperature sensor 3 is arranged near the upper end of the heating sleeve 2-1, and the lower temperature sensor 4 is arranged near the lower end of the heating sleeve 2-1. Both the upper temperature sensor 3 and the lower temperature sensor 4 are rod-shaped probe sensors, and the included angle between their axial directions is 90 degrees, so as to realize the acquisition process of temperature data in a scattered and high-low layout relationship.
[0042] Furthermore, both the upper temperature sensor 3 and the lower temperature sensor 4 are arranged near the valve stem 1-6 in the main valve body 1-1, that is, the thickness of the corresponding inner lining sleeve 7 is less than the thickness of the main valve body 1-1.
[0043] Embodiment Seven: This embodiment is a further limitation of Embodiment One, Two, Three, Four, Five or Six. The upper temperature sensor 3 and the lower temperature sensor 4 have the same structure. The upper temperature sensor 3 is a dual-probe temperature sensor. The dual-probe sensor is an existing dual-probe temperature sensor, and its working principle is the same as that of the existing temperature sensor. The upper temperature sensor 3 includes an outer probe 3-1, an inner probe 3-2, a main connecting piece 3-3 and a sheet-shaped processor 3-4. The main connecting piece 3-3 is arranged vertically. The outer side and the inner side of the main connecting piece 3-3 are respectively connected with the outer probe 3-1 and the inner probe 3-2. A sheet-shaped processor 3-4 is arranged in the main connecting piece 3-3. The main connecting piece 3-3 is a sheet body for supporting. The outer probe 3-1 and the inner probe 3-2 respectively pass through the main connecting piece 3-3 and are connected with the sheet-shaped processor 3-4. The sheet-shaped processor 3-4 is electrically connected with the controller. The sheet-shaped processor 3-4 is a sheet-shaped data processor, which is an essential component of the temperature sensor. The working principle of the cooperation between the outer probe 3-1, the inner probe 3-2, the main connecting piece 3-3 and the sheet-shaped processor 3-4 is the same as that of the existing temperature sensor. Other essential components of the temperature sensor not mentioned are the same as those in the prior art.
[0044] In this embodiment, both the outer probe 3-1 and the inner probe 3-2 are cylindrical probes. The outer end of the outer probe 3-1 is flush with the outer wall of the main valve body 1-1, and the inner end of the inner probe 3-2 is flush with the inner wall of the heating sleeve 2-1.
[0045] When an inner lining sleeve 7 is arranged in the main valve body 1-1, the outer end of the outer probe 3-1 is flush with the outer wall of the main valve body 1-1, and the inner end of the inner probe 3-2 is flush with the inner wall of the inner lining sleeve 7.
[0046] Embodiment Eight: This embodiment is a further limitation of Embodiment One. The height of the heating sleeve 2-1 is less than the height of the main valve body 1-1. The heating sleeve 2-1 is located between the water belt interface 1-2 and the drain valve 1-3 in the main valve body 1-1. This position area is for the position in the main valve body 1-1 where freezing and cracking are likely to occur.
[0047] Embodiment Nine: In combination with Figures 4 to 9 This embodiment will be described. In this embodiment, the active self-freezing fire hydrant is a detachable active self-freezing fire hydrant. The detachable active self-freezing fire hydrant includes a fire hydrant body 1, an inner core heating element 2, and a lining sleeve 7. The fire hydrant body 1 includes an upper valve body 1-4 and a lower valve body 1-5. The upper valve body 1-4 and the lower valve body 1-5 are detachably formed into a main valve body 1. The upper valve body 1-4 and the lower valve body 1-5 are coaxially connected in sequence from top to bottom. The lower end of the upper valve body 1-4 is detachably connected to the upper end of the lower valve body 1-5. A lining sleeve 7 is coaxially arranged inside the lower valve body 1-5. An annular outer convex rib 8 is integrally connected to the outer wall of the bottom end of the lining sleeve 7. The annular outer convex rib 8 is provided to support the heating sleeve 2-1. The lining sleeve 7 is welded or bonded to the inner wall of the bottom end of the lower valve body 1-5 through the annular outer convex rib 8. When maintenance is required, the annular outer convex rib 8 and the lower valve body 1-5 can be detached, so that the heating sleeve 2-1 is exposed for maintenance. After maintenance, it is welded or bonded again. An annular clamping gap 9 is formed between the inner wall of the lower valve body 1-5 and the outer wall of the lining sleeve 7. An inner core heating element 2 is arranged in the annular clamping gap 9. The inner core heating element 2 is tightly attached to the inner wall of the lower valve body 1-5 and the outer wall of the lining sleeve 7 respectively.
[0048] The inner core heating element 2 includes a heating sleeve 2-1. The heating sleeve 2-1 is provided with a control component. The control component includes an upper temperature sensor 3, a lower temperature sensor 4, a controller, and an electrical connection terminal 6. The upper temperature sensor 3 and the lower temperature sensor 4 are respectively connected to the electrical connection terminal 6 through the controller. The upper temperature sensor 3 is arranged in the radial direction of the lower valve body 1-5 between the lower valve body 1-5 and the heating sleeve 2-1. The lower temperature sensor 4 is arranged in the radial direction of the lower valve body 1-5 between the lower valve body 1-5 and the heating sleeve 2-1. The electrical connection terminal 6 passes through the lower valve body 1-5 and is connected to the heating sleeve 2-1.
[0049] In this embodiment, the electrical connection terminal 6 provides an electrical connection position for an external power supply. The electrical control principle among the upper temperature sensor 3, the lower temperature sensor 4, the controller, and the electrical connection terminal 6 is the same as the working principle among the existing temperature sensor, controller, and power supply terminal. The controller can also be provided with an alarm. The upper temperature sensor 3 and the lower temperature sensor 4 collect stable signals and transmit them to the controller. The controller energizes the heating sleeve 2-1 through the electrical connection terminal 6. When the temperature reaches the set value or after the set value lasts for a predetermined period of time, the upper temperature sensor 3 and the lower temperature sensor 4 collect stable signals again and transmit them to the controller. The controller controls the electrical connection terminal 6 or notifies the operator to cut off the power through an existing alarm.
[0050] In this embodiment, the control component composed of the controller and the alarm can be arranged inside the main valve body 1-1 or externally arranged, and is used together with the external power supply when connected to the upper temperature sensor 3, the lower temperature sensor 4, and the electrical connection terminal 6.
[0051] In this embodiment, an upper flange 10 is provided at the lower end of the upper valve body 1-4, and a lower flange 11 is provided at the upper end of the lower valve body 1-5. The upper flange 10 and the lower flange 11 are detachably connected.
[0052] In this embodiment, the inner core heating element 2 in the detachable active self-freezing fire hydrant is detachable, which is convenient for maintenance and can be used in areas with a cold region low-temperature environment where the temperature is below -20 degrees Celsius for a long time.
[0053] In this embodiment, the upper temperature sensor 3 and the lower temperature sensor 4 have the same structure. The upper temperature sensor 3 is a dual-probe sensor. The upper temperature sensor 3 includes an outer probe 3-1, an inner probe 3-2, a main connecting piece 3-3, and a sheet processor 3-4. The main connecting piece 3-3 is arranged vertically. The outer probe 3-1 and the inner probe 3-2 are respectively connected to the outside and the inside of the main connecting piece 3-3. A sheet processor 3-4 is arranged inside the main connecting piece 3-3. The outer probe 3-1 and the inner probe 3-2 respectively pass through the main connecting piece 3-3 and are connected to the sheet processor 3-4. The sheet processor 3-4 is electrically connected to the controller.
[0054] In this embodiment, both the outer probe 3-1 and the inner probe 3-2 are cylindrical probes. The outer end of the outer probe 3-1 is flush with the outer wall of the lower valve body 1-5, and the inner end of the inner probe 3-2 is flush with the inner wall of the heating sleeve 2-1.
[0055] When a lining sleeve 7 is fitted inside the lower valve body 1-5, the outer end of the outer probe 3-1 is flush with the outer wall of the lower valve body 1-5, and the inner end of the inner probe 3-2 is flush with the inner wall of the lining sleeve 7.
[0056] Furthermore, the height of the heating sleeve 2-1 is less than the height of the lower valve body 1-5. The heating sleeve 2-1 is located between the water hose interface 1-2 and the drain valve 1-3 of the lower valve body 1-5.
[0057] The structures and connection relationships not mentioned in this embodiment are the same as those in the first, second, third, fourth, fifth, sixth, seventh, or eighth specific embodiments.
[0058] When the utility model is in use, according to the preset requirements or temporary emergency needs, the inner core heating element 2 and the control component are started, the power connection terminal 6 is energized, and the heating time of the heating sleeve 2-1 is correspondingly implemented through the upper temperature sensor 3 and the lower temperature sensor 4 until the temperature inside the fire hydrant body 1 reaches the predetermined requirements and then the heating stops. At the same time, after the heating of the heating sleeve 2-1 is completed, it can also maintain the continuity of heat preservation and anti-freezing of the fire hydrant body 1 through its own heat storage performance.
Claims
1. An active emergency self - anti - freezing fire hydrant for cold regions, characterized in that: The active self-freezing prevention fire hydrant is an integrated active self-freezing prevention fire hydrant. The integrated active self-freezing prevention fire hydrant includes a fire hydrant body (1) and an inner core heating element (2). An inner core heating element (2) is arranged on the inner wall of the main valve body (1-1) of the fire hydrant body (1). The inner core heating element (2) includes a heating sleeve (2-1). The heating sleeve (2-1) is coaxially arranged in the main valve body (1-1), and the outer circumferential wall of the heating sleeve (2-1) is closely attached to the inner circumferential wall of the main valve body (1-1). The inner core heating element (2) is cooperatively provided with a control assembly. The control assembly includes an upper temperature sensor (3), a lower temperature sensor (4), a controller, and a power connection terminal (6). The upper temperature sensor (3) and the lower temperature sensor (4) are respectively connected to the power connection terminal (6) through the controller. The upper temperature sensor (3) is arranged in the radial direction of the main valve body (1-1) between the main valve body (1-1) and the heating sleeve (2-1). The lower temperature sensor (4) is arranged in the radial direction of the main valve body (1-1) between the main valve body (1-1) and the heating sleeve (2-1). The power connection terminal (6) passes through the main valve body (1-1) and is connected to the heating sleeve (2-1).
2. The active emergency self - anti - freezing fire hydrant for cold regions according to claim 1, characterized in that: The heating sleeve (2-1) includes an outer sleeve (2-1-1) and a heat storage capsule sheet (2-1-2). The heat storage capsule sheet (2-1-2) is arranged inside the outer sleeve (2-1-1).
3. The active emergency self - anti - freezing fire hydrant for cold regions according to claim 2, characterized in that: The heat storage capsule sheet (2-1-2) is a phase change material chip.
4. An active emergency self - anti - freezing fire hydrant for cold regions according to claim 1, 2 or 3, characterized in that: A lining sleeve (7) is cooperatively arranged in the main valve body (1-1). An annular groove is machined on the inner wall of the main valve body (1-1) along its circumferential direction. The inner core heating element (2) is arranged in the annular groove. The lining sleeve (7) is coaxially arranged on the inner circumferential wall of the inner core heating element (2). The two ends of the lining sleeve (7) are respectively connected to the inner walls on both sides of the annular groove.
5. The active emergency self - anti - freezing fire hydrant for cold regions according to claim 1, wherein: The upper temperature sensor (3) is arranged close to the upper end of the heating sleeve (2-1), and the lower temperature sensor (4) is arranged close to the lower end of the heating sleeve (2-1).
6. The active emergency self - anti - freezing fire hydrant for cold regions according to claim 1 or 5, characterized in that: The upper temperature sensor (3) and the lower temperature sensor (4) have the same structure. The upper temperature sensor (3) is a dual-probe sensor. The upper temperature sensor (3) includes an outer probe (3-1), an inner probe (3-2), a main connection piece (3-3), and a sheet-shaped processor (3-4). The main connection piece (3-3) is arranged vertically. The outer probe (3-1) and the inner probe (3-2) are respectively connected to the outer side and the inner side of the main connection piece (3-3). A sheet-shaped processor (3-4) is arranged inside the main connection piece (3-3). The outer probe (3-1) and the inner probe (3-2) respectively pass through the main connection piece (3-3) and are connected to the sheet-shaped processor (3-4). The sheet-shaped processor (3-4) is electrically connected to the controller.
7. The active emergency self - anti - freezing fire hydrant for cold regions according to claim 1, characterized in that: The height of the heating sleeve (2-1) is less than the height of the main valve body (1-1). The heating sleeve (2-1) is located between the water belt interface (1-2) and the drain valve (1-3) in the main valve body (1-1).
8. An active emergency self - anti - freeze fire hydrant for cold regions, characterized in that: The active self-anti-freezing fire hydrant is a detachable active self-anti-freezing fire hydrant. The detachable active self-anti-freezing fire hydrant includes a fire hydrant body (1), an inner core heating element (2), and a lining sleeve (7). The fire hydrant body (1) includes an upper valve body (1-4) and a lower valve body (1-5). The upper valve body (1-4) and the lower valve body (1-5) are coaxially connected in sequence from top to bottom. The lower end of the upper valve body (1-4) is detachably connected to the upper end of the lower valve body (1-5). A lining sleeve (7) is coaxially arranged inside the lower valve body (1-5). An annular outer convex rib (8) is integrally connected to the outer wall of the bottom end of the lining sleeve (7). The lining sleeve (7) is connected to the inner wall of the bottom end of the lower valve body (1-5) through the annular outer convex rib (8). An annular clamping gap (9) is formed between the inner wall of the lower valve body (1-5) and the outer wall of the lining sleeve (7). An inner core heating element (2) is arranged in the annular clamping gap (9). The inner core heating element (2) is tightly attached to the inner wall of the lower valve body (1-5) and the outer wall of the lining sleeve (7) respectively.
9. The active emergency self - anti - freezing fire hydrant for cold regions according to claim 8, wherein: The inner core heating element (2) includes a heating sleeve (2-1). The heating sleeve (2-1) is provided with a control component. The control component includes an upper temperature sensor (3), a lower temperature sensor (4), a controller, and a power connection terminal (6). The upper temperature sensor (3) and the lower temperature sensor (4) are respectively connected to the power connection terminal (6) through the controller. The upper temperature sensor (3) is arranged in the radial direction of the lower valve body (1-5) and penetrates between the lower valve body (1-5) and the heating sleeve (2-1). The lower temperature sensor (4) is arranged in the radial direction of the lower valve body (1-5) and penetrates between the lower valve body (1-5) and the heating sleeve (2-1). The power connection terminal (6) passes through the lower valve body (1-5) and is connected to the heating sleeve (2-1).