Induced draft fan single-point multi-branch temperature measurement interlocking protection device

Abstract

The utility model discloses a single-point multi-branch temperature measurement interlocking protection device for an induced draft fan, which belongs to the technical field of temperature measurement protection and comprises a male socket, a base and a temperature sensing component, the bottom of the male socket is connected with the base through a connecting sleeve, the temperature sensing component is mounted at the bottom of the base, and the temperature sensing component comprises a temperature sensing element, a temperature sensing sleeve and a heat conduction head. The temperature sensing element is arranged in the temperature sensing sleeve, and the bottom of the temperature sensing sleeve is provided with a heat conduction head tightly connected with the bottom of the temperature sensing element. The beneficial effects of the utility model are that through the temperature sensing assembly on the base, the temperature sensing element can be protected through the temperature sensing sleeve, so that the temperature sensing element is not in direct contact with a temperature-measured medium, and the temperature sensing sleeve and the temperature sensing element are installed in a split manner, so that the function of daily maintenance at any time is realized; a plurality of temperature measuring elements at a single measuring point can be adopted on the male socket to measure the temperature and realize interlocking protection, so that the safety, reliability and stability of draught fan equipment of the induced draft fan can be well improved.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature measurement protection, in particular to a single-point multi-branch temperature measurement interlocking protection device for an induced draft fan. Background Art

[0002] In the automated production process of alumina industry, the temperature of the induced draft fan motor is one of the important parameters that need to be controlled and measured. In the process of fan temperature measurement, single or double thermal resistors are more common in practical applications. They have many advantages, such as simple structure, convenient manufacturing, wide measurement range, high accuracy, and convenient output signal transmission to achieve interlocking protection of DCS host computer. The temperature measuring element needs to insert the temperature measuring sleeve directly into the temperature measurement part of the motor fan and fix it by using threads.

[0003] In the prior art, the installation method of the temperature measuring sleeve is usually fixed by welding, threading, and clamping. When a simple threaded fixing method is used, it is not convenient to disassemble during daily maintenance; when a clamping method is used for fixing, a single-point multi-branch temperature measurement method cannot be realized. In addition, when a temperature measuring element is used to measure the temperature of the motor fan, the temperature measuring element is damaged due to the long-term vibration of the equipment, and it is difficult to remove it during maintenance. In this way, it can only be replaced when the equipment is shut down, which affects the production capacity and increases the equipment investment and daily maintenance costs. At the same time, a utility model patent with a publication number of CN205449328U discloses a fan main shaft temperature monitoring device, including: a bearing seat, a temperature sensor, a data collector, a controller and a monitoring system, the temperature sensor is connected to the monitoring system through the data collector and the controller in turn, the bearing seat is provided with a temperature measuring hole, the depth of the temperature measuring hole is less than the thickness of the bearing seat wall at that location, and the temperature sensor is inserted in the temperature measuring hole. It cannot avoid the problem of damage to the single temperature measuring element during the temperature measurement of the motor fan, and the protection needs to be improved. Utility Model Content

[0004] In order to overcome the problem that a single temperature measuring element is damaged during the temperature measurement of a motor fan and other problems that cannot be avoided in the prior art, the utility model provides a single-point multi-branch temperature measurement interlocking protection device for an induced draft fan, comprising a male socket, a base and a temperature sensing component, the bottom of the male socket is connected to the base via a connecting sleeve, the bottom of the base is mounted with the temperature sensing component, the temperature sensing component comprises a temperature sensing element, a temperature sensing sleeve and a heat conducting head, the temperature sensing element is arranged inside the temperature sensing sleeve, and the bottom of the temperature sensing sleeve is provided with a heat conducting head tightly connected to the bottom of the temperature sensing element.

[0005] The device is installed and fixed on the induced draft fan motor. The signal line connection plug and the male socket can be connected to an external control system for control. Through the temperature sensing component on the base, the temperature sensing element can be protected by the temperature sensing sleeve, so that the temperature sensing element is not in direct contact with the temperature measured medium and does not affect the detection of the temperature sensing element. At the same time, the temperature sensing sleeve and the temperature sensing element are installed in a split manner to realize the function of daily maintenance at any time. On the male socket, a single measuring point and multiple temperature measuring elements can be used for temperature measurement and interlocking protection can be realized, which can greatly improve the safety, reliability and stability of the induced draft fan equipment.

[0006] Preferably, a connection groove connected to an external control system is formed on the top of the male socket, and a limiting protrusion is arranged inside the connection groove.

[0007] Preferably, the bottom of the base is fixedly connected to the top of the temperature sensing element, an external thread is formed on the outer circumference of the top of the temperature sensing element, and the external thread is threadedly connected to the temperature sensing sleeve.

[0008] Preferably, the bottom of the male socket is connected to the connecting sleeve via a connecting thread, a central channel is formed in the middle of the connecting sleeve, and a temperature measurement signal line connecting the temperature sensing element and the male socket is arranged in the central channel.

[0009] Preferably, a plurality of pin holes are formed on the surface of the connecting groove, and pure copper silver-plated pins for connecting the temperature measurement signal line are arranged in the pin holes.

[0010] By setting the connecting thread and the external thread, the temperature sensing element and the temperature sensing sleeve can be quickly disassembled and assembled, so that the temperature sensing element can be inspected and maintained at any time. By setting the pure copper silver-plated pins in the pin holes, the three temperature measurement signal lines can be connected to the male socket by welding, so as to facilitate the connection of the temperature sensing element with the external signal line.

[0011] Preferably, a connecting plug is inserted into the connecting groove, a plug signal line is connected inside the connecting plug, a sealing head is provided at the connection between the plug signal line and the connecting plug, and a flexible connecting spring is provided on the surface of the plug signal line.

[0012] Preferably, the exterior of the temperature sensing sleeve is provided with a high temperature resistant coating, and the interior of the temperature sensing sleeve is provided with a reinforced inner tube.

[0013] By setting a reinforced inner tube inside the temperature sensing sleeve, the strength of the temperature sensing sleeve can be improved to make it less prone to damage. By setting a high-temperature resistant coating outside the temperature sensing sleeve, the high-temperature resistance of the temperature sensing sleeve can be improved, thereby improving its durability and strengthening the protection of the temperature sensing element.

[0014] Preferably, a pin hole is formed in the middle of the connecting groove.

[0015] Preferably, the temperature sensing sleeve is made of stainless steel shock-resistant material.

[0016] Preferably, a plurality of vertically penetrating mounting holes are provided on the outer surface of the male socket.

[0017] The installation hole can be used to facilitate installation of the device on the induced draft fan motor equipment, thereby facilitating stable use of the temperature sensing element.

[0018] Beneficial effects:

[0019] The beneficial effects produced by adopting the technical solution of the utility model are as follows:

[0020] (1) The device is installed and fixed on the induced draft fan motor. The signal line connection plug and the male socket can be connected to the external control system for control. The temperature sensing component on the base can be protected by the temperature sensing sleeve, so that the temperature sensing element is not in direct contact with the temperature measured medium and does not affect the detection of the temperature sensing element. At the same time, the temperature sensing sleeve and the temperature sensing element are installed in a split manner to realize the function of daily maintenance at any time. On the male socket, a single measuring point and multiple temperature measuring elements can be used for temperature measurement and interlocking protection can be realized, which can greatly improve the safety, reliability and stability of the induced draft fan equipment.

[0021] (2) Through the setting of the connecting thread and the external thread, the temperature sensing element and the temperature sensing sleeve can be quickly disassembled and assembled, so that the temperature sensing element can be inspected and maintained at any time. Through the setting of the pure copper silver-plated pin in the pin hole, the three temperature measurement signal lines can be connected to the male socket by welding, so as to facilitate the connection of the temperature sensing element with the external signal line.

[0022] (3) By providing a reinforced inner tube inside the thermowell, the strength of the thermowell can be improved, making it less susceptible to damage. By providing a high-temperature resistant coating outside the thermowell, the high-temperature resistance of the thermowell can be improved, thereby improving its durability and strengthening the protection of the temperature sensing element. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall connection structure of the utility model single-point multi-branch temperature measurement interlocking protection device for induced draft fans;

[0025] Figure 2 This is a schematic diagram of the internal structure of the utility model single-point multi-branch temperature measurement interlocking protection device for induced draft fans;

[0026] Figure 3 It is a three-dimensional diagram of the utility model single-point multi-branch temperature measurement interlocking protection device for induced draft fans;

[0027] Figure 4 It is a top view of the male socket on the single-point multi-branch temperature measurement interlock protection device of the utility model for induced draft fans;

[0028] Figure 5 It is an internal structural diagram of a high-temperature sleeve on a single-point multi-branch temperature measurement interlocking protection device for an induced draft fan of the utility model.

[0029] In the figure: 1. Male socket; 2. Base; 3. Temperature sensing component; 4. Connecting plug; 5. Flexible connecting spring; 6. Plug signal line; 7. Sealing head; 8. Connecting sleeve; 9. Connecting groove; 10. Center channel; 11. Mounting hole; 12. Temperature sensing element; 13. External thread; 14. Temperature sensing sleeve; 15. Connecting thread; 16. Limiting protrusion; 17. Pin hole; 18. Pin hole; 19. Thermal head; 20. High temperature resistant coating; 21. Strengthen the inner tube. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] In this embodiment, the device is installed and fixed on the induced draft fan motor. The signal line connection plug and the male socket can be connected to an external control system for control. Through the temperature sensing component on the base, the temperature sensing element can be protected by the temperature sensing sleeve, so that the temperature sensing element is not in direct contact with the temperature measured medium, and will not affect the detection of the temperature sensing element. At the same time, the temperature sensing sleeve and the temperature sensing element are installed in a split manner to achieve the function of daily maintenance at any time. On the male socket, a single measuring point and multiple temperature measuring elements can be used for temperature measurement and interlocking protection can be achieved, which can greatly improve the safety, reliability and stability of the induced draft fan equipment. The specific implementation method is as follows:

[0032] like Figures 1 to 5As shown, a single-point multi-branch temperature measurement interlock protection device for an induced draft fan includes a male socket 1, a base 2 and a temperature sensing component 3. The bottom of the male socket 1 is connected to the base 2 through a connecting sleeve 8. The bottom of the base 2 is installed with the temperature sensing component 3. The temperature sensing component 3 includes a temperature sensing element 12, a temperature sensing sleeve 14 and a heat-conducting head 19. The temperature sensing element 12 is arranged inside the temperature sensing sleeve 14. The bottom of the temperature sensing sleeve 14 is provided with a heat-conducting head 19 that is closely connected to the bottom of the temperature sensing element 12. The device is installed and fixed on the induced draft fan motor, and can be connected to an external control system for control through the connection between the signal line connecting plug 4 and the male socket 1. Through the temperature sensing component 3 on the base 2, the temperature sensing element 12 can be protected by the temperature sensing sleeve 14, so that the temperature sensing element 12 is not in direct contact with the temperature measured medium, and the detection of the temperature sensing element 12 is not affected. At the same time, the temperature sensing sleeve 14 and the temperature sensing element 12 are installed in a split manner to realize the function of daily maintenance at any time. On the male socket 1, a single measuring point and multiple temperature measuring elements can be used to measure temperature and realize interlocking protection, which can greatly improve the safety, reliability and stability of the induced draft fan equipment.

[0033] The thermal conductive head 19 directly contacts the internal temperature of the motor to sense the temperature and transfer it to the temperature sensing element 12. It is preferably made of stainless steel. The thermal conductive head 19 is connected to at least three temperature measuring elements. The three temperature measuring elements are simultaneously uploaded to the DCS host computer to realize three-out-of-two interlocking protection. The three temperature measuring elements are combined to form the temperature sensing element 12.

[0034] A connection groove 9 connected to an external control system is formed on the top of the male socket 1. A limiting protrusion 16 is arranged inside the connection groove 9. The limiting protrusion 16 can cooperate with the connection groove 9 to facilitate the insertion of the connection plug 4.

[0035] The bottom of the base 2 is fixedly connected to the top of the temperature sensing element 12. An external thread 13 is formed on the outer circumference of the top of the temperature sensing element 12. The external thread 13 is threadedly connected to the temperature sensing sleeve 14. By setting the connecting thread 15 and the external thread 13, the temperature sensing element 12 and the temperature sensing sleeve 14 can be quickly disassembled and assembled, so that the temperature sensing element 12 can be inspected and maintained at any time.

[0036] The bottom of the male socket 1 is connected to the connecting sleeve 8 via a connecting thread 15. A central channel 10 is formed in the middle of the connecting sleeve 8. A temperature measurement signal line connecting the temperature sensing element 12 and the male socket 1 is arranged in the central channel 10. Three temperature measurement signal lines are arranged in the central channel 10, which are respectively connected to three temperature measuring elements.

[0037] A plurality of pin holes 17 are formed on the surface of the connecting groove 9, and pure copper silver-plated pins for connecting the temperature measurement signal lines are arranged in the pin holes 17. Through the arrangement of the pure copper silver-plated pins in the pin holes 17, the three temperature measurement signal lines can be mainly connected to the male socket 1 by welding, thereby facilitating the connection of the temperature sensing element 12 with the external signal line.

[0038] A connecting plug 4 is inserted into the connecting groove 9, and a plug signal line 6 is connected to the interior of the connecting plug 4. A sealing head 7 is provided at the connection between the plug signal line 6 and the connecting plug 4. A flexible connecting spring 5 is provided on the surface of the plug signal line 6. The sealing head 7 can be used to tighten and seal the signal line to prevent water from entering. The flexible connecting spring 5 can protect the signal line from being damaged by long-term bending.

[0039] The temperature sensing sleeve 14 is provided with a high temperature resistant coating 20 on the outside, and a reinforced inner tube 21 on the inside. The reinforced inner tube 21 provided inside the temperature sensing sleeve 14 can improve the strength of the temperature sensing sleeve 14 and make it less prone to damage. The high temperature resistant coating 20 provided outside the temperature sensing sleeve 14 can improve the high temperature resistance of the temperature sensing sleeve 14, thereby improving its durability and strengthening the protection of the temperature sensing element 12.

[0040] A pin hole 18 is formed in the middle of the connection groove 9, through which the connection plug 4 can be further plugged and fixed.

[0041] The material of the temperature sensing sleeve 14 is a shock-resistant stainless steel material, which mainly plays a shock-resistant role to prevent the temperature sensing element 12 from being damaged when the equipment body vibrates for a long time.

[0042] A plurality of vertically penetrating mounting holes 11 are provided on the outer surface of the male socket 1. Through the mounting holes 11, the device can be easily installed on the induced draft fan motor equipment, so that the temperature sensing element 12 can be used stably.

[0043] Working principle: The device can be installed and fixed on the induced draft fan motor through the mounting hole set on the edge of the male socket, and the internal temperature sensing component can be extended into the motor for temperature sensing. The connection between the signal line connecting the plug and the male socket can be connected to the external control system for control. Through the temperature sensing component on the base, the temperature sensing element can be protected by the temperature sensing sleeve, so that the temperature sensing element and the temperature measured medium are not in direct contact, and will not affect the detection of the temperature sensing element. At the same time, the temperature sensing sleeve and the temperature sensing element are installed in a split manner to realize the function of daily maintenance at any time. On the male socket, a single measuring point and multiple temperature measuring elements can be used for temperature measurement and interlocking protection can be realized. It can well improve the safety, reliability and stability of the induced draft fan equipment. Through the setting of the connecting thread and the external thread, the temperature sensing element and the temperature sensing sleeve can be quickly disassembled and assembled, so that the temperature sensing element can be inspected and maintained at any time. Through the setting of the pure copper silver-plated pin in the pin hole, the three temperature measurement signal lines can be mainly connected to the male socket by welding, so as to facilitate the connection of the temperature sensing element with the external signal line. Through the reinforced inner tube set inside the temperature sensing sleeve, the strength of the temperature sensing sleeve can be improved to make it not easy to be damaged. Through the high-temperature resistant coating set outside the temperature sensing sleeve, the high-temperature resistance of the temperature sensing sleeve can be improved, thereby improving its durability and strengthening the protection of the temperature sensing element.

[0044] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A single-point multi-branch temperature measurement interlock protection device for induced draft fans, characterized in that: The invention comprises a male socket (1), a base (2) and a temperature sensing component (3); the bottom of the male socket (1) is connected to the base (2) via a connecting sleeve (8); the bottom of the base (2) is provided with the temperature sensing component (3); the temperature sensing component (3) comprises a temperature sensing element (12), a temperature sensing sleeve (14) and a heat conducting head (19); the temperature sensing element (12) is arranged inside the temperature sensing sleeve (14); the bottom of the temperature sensing sleeve (14) is provided with a heat conducting head (19) which is closely connected to the bottom of the temperature sensing element (12).

2. The single-point multi-branch temperature measurement interlock protection device for induced draft fans according to claim 1 is characterized in that: A connection groove (9) connected to an external control system is formed on the top of the male socket (1), and a limiting protrusion (16) is arranged inside the connection groove (9).

3. The single-point multi-branch temperature measurement interlock protection device for induced draft fans according to claim 1 is characterized in that: The bottom of the base (2) is fixedly connected to the top of the temperature sensing element (12); an external thread (13) is formed on the outer circumference of the top of the temperature sensing element (12); and the external thread (13) is threadedly connected to the temperature sensing sleeve (14).

4. The single-point multi-branch temperature measurement interlock protection device for induced draft fans according to claim 2 is characterized in that: The bottom of the male socket (1) is connected to the connecting sleeve (8) via a connecting thread (15); a central channel (10) is formed in the middle of the connecting sleeve (8); and a temperature measurement signal line connecting a temperature sensing element (12) and the male socket (1) is arranged in the central channel (10).

5. The single-point multi-branch temperature measurement interlock protection device for induced draft fans according to claim 4 is characterized in that: A plurality of pin holes (17) are formed on the surface of the connection groove (9), and pure copper silver-plated pins for connecting the temperature measurement signal line are arranged in the pin holes (17).

6. The single-point multi-branch temperature measurement interlock protection device for induced draft fans according to claim 2 is characterized in that: A connecting plug (4) is inserted into the connecting groove (9), a plug signal line (6) is connected to the interior of the connecting plug (4), a sealing head (7) is provided at the connection between the plug signal line (6) and the connecting plug (4), and a flexible connecting spring (5) is provided on the surface of the plug signal line (6).

7. The single-point multi-branch temperature measurement interlock protection device for induced draft fans according to claim 1 is characterized in that: The exterior of the temperature sensing sleeve (14) is provided with a high temperature resistant coating (20), and the interior of the temperature sensing sleeve (14) is provided with a reinforced inner tube (21).

8. The single-point multi-branch temperature measurement interlock protection device for induced draft fans according to claim 5 is characterized in that: A pin hole (18) is formed in the middle of the connecting groove (9).

9. The single-point multi-branch temperature measurement interlock protection device for induced draft fans according to claim 1 is characterized in that: The material of the temperature sensing sleeve (14) is stainless steel shock-resistant material.

10. The single-point multi-branch temperature measurement interlock protection device for induced draft fans according to claim 1, characterized in that: The outer surface of the male socket (1) is provided with a plurality of mounting holes (11) penetrating vertically.

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