Fire damper torque detection adapter and fire damper torque detection device

Abstract

The utility model discloses a kind of adapter for fire damper torque detection and fire damper torque detection device, the adapter includes: adapter main body, with the first end and second end being oppositely arranged along its axial direction;With the power connection part of external driving tool connection, integrally formed in the first end;Wherein, the second end is provided with: the hole of avoidance, along axial extension and penetrate the second end, the aperture of the hole of avoidance is configured to be greater than the outer contour dimension of the actuator body of the fire damper to be measured, to be placed into by the actuator body;With the handle top silk head portion exposed outside actuator body is engaged at least two top silk engagement parts, each top silk engagement part is associated with the hole of avoidance in the radial direction of adapter main body, and configured to limit adapter main body and actuator relative circumferential rotation when handle top silk head portion is engaged into. The utility model realizes the torque adapter to valve body under the premise of not removing actuator, facilitate detection, greatly improve detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant safety equipment testing technology, and in particular to an adapter and a device for testing the torque of a fire damper. Background Technology

[0002] According to industry requirements, when designing and arranging safety-critical structures, systems, and components in nuclear power plants, in addition to meeting other safety requirements, it is essential to minimize the likelihood and consequences of fires and explosions caused by external or internal events. Fire prevention primarily relies on passive fire protection measures, such as civil engineering design or redundant equipment placement, to prevent the unavailability of redundant equipment performing the same safety function due to a single fire. To this end, nuclear power plants divide each building into several fire compartments. Fire dampers maintain normal ventilation between each fire compartment, and in the event of a fire, the fire compartments can be closed actively or passively to ensure the integrity of the fire compartment during a fire.

[0003] During regular closing tests of fire dampers at a nuclear power plant, the failure of fire dampers to close was repeatedly observed, severely impacting the integrity of fire compartments. To address this issue, the analysis needed to determine if the valve body exhibited excessive friction or jamming, as common tools were insufficient for measuring parameters such as friction within the valve body.

[0004] In the existing technology, there is a lack of a special tool that can quickly and accurately measure the operating torque of a fire damper without disassembling the actuator, which makes it impossible to detect the hidden danger of increased friction in the valve body in advance. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an adapter for testing the torque of a fire damper and a device for testing the torque of a fire damper.

[0006] The technical solution adopted by this utility model to solve its technical problem is: to construct an adapter for detecting the torque of a fire damper, comprising: The adapter body has a first end and a second end that are disposed opposite to each other along its axial direction; The power connection part, which connects to an external driving tool, is integrally formed at the first end; The second end is provided with: An obstacle clearance hole extends axially and penetrates the second end. The diameter of the obstacle clearance hole is configured to be larger than the outer dimensions of the actuator body of the fire damper under test, so that the actuator body can be inserted. At least two set screw engagement portions engage with a handle set screw head exposed outside the actuator body, each set screw engagement portion being associated with the clearance hole in the radial direction of the adapter body and configured to restrict relative circumferential rotation between the adapter body and the actuator when the handle set screw head is engaged.

[0007] Furthermore, the adapter body is a sleeve structure.

[0008] Furthermore, the set screw engagement portion is a stop groove formed on the second end face.

[0009] Furthermore, the stop groove has a radial opening.

[0010] Furthermore, the stop groove extends axially along the adapter body, and its depth is greater than the axial height of the handle set screw head; the width of the stop groove is greater than the diameter of the handle set screw head, and its sidewall is configured to fit against the side of the handle set screw head to transmit torque.

[0011] Furthermore, the number of stop grooves is four, which are evenly distributed along the circumference of the adapter body.

[0012] Furthermore, the diameter of the clearance hole is smaller than the diameter of the maximum envelope circle formed by the outer contour of the actuator body and the exposed handle set screw head.

[0013] Furthermore, the axial depth of the clearance hole is greater than the axial height of the actuator insertion portion.

[0014] Furthermore, the power connection part is provided with an internal connection hole, the cross-sectional shape of which is square, hexagonal or polygonal.

[0015] This utility model also constructs a fire damper torque detection device, including an external driving tool and an adapter for fire damper torque detection as described in any of the above. The output end of the external driving tool is detachably connected to the power connection part, driving the adapter to rotate, and then applying the detection torque to the actuator of the fire damper through the engaged handle set screw.

[0016] By implementing this utility model, the following beneficial effects can be achieved: The adapter for testing the torque of a fire damper of this utility model utilizes the original handle set screw of the actuator for fixation, realizing torque transfer of the valve body without removing the actuator, which facilitates testing and greatly improves testing efficiency.

[0017] The fire damper torque detection device of this utility model has a rigid connection between the adapter and the actuator through a set screw, and the torque transmission path is clear. It can accurately measure the operating torque of the fire damper, detect potential defects such as increased friction in time, and prevent the fire damper from failing in a fire. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings: Figure 1 This is a cross-sectional view of an adapter for detecting the torque of a fire damper according to an embodiment of this utility model; Figure 2 yes Figure 1 A bottom view of the adapter for testing the torque of a fire damper; Figure 3 This is a radial cross-sectional view of the fire damper actuator in the prior art; Figure 4 yes Figure 3 Axial sectional view of the fire damper actuator in the diagram; Figure 5 yes Figure 1 Fire damper torque testing adapter and Figure 4 A schematic diagram of the installation of the fire damper actuator; Figure 6 yes Figure 5 The radial sectional view of the overall mounting structure at the handle set screw position. Detailed Implementation

[0019] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0021] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a chemical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] See Figures 1 to 6 One embodiment of this utility model discloses a fire damper torque detection device, including an external driving tool and an adapter for fire damper torque detection. The external driving tool can be a torque wrench, etc., which is prior art and is not shown in the figure.

[0024] like Figure 1 and Figure 2 As shown, the adapter for testing the torque of a fire damper includes an adapter body 1 and a power connection part 2. The adapter body 1 has a first end 11 and a second end 12 arranged opposite each other along its axial direction. The power connection part 2 connects to an external driving tool and is integrally formed on the first end 11 of the adapter body 1. The adapter body 1 has a sleeve structure. The power connection part is provided with an internal connection hole 21, the cross-sectional shape of which is square, hexagonal, or polygonal, for connecting to external driving tools such as torque wrenches.

[0025] like Figure 3 and Figure 4 As shown, the structure of the actuator of the fire damper is illustrated. The actuator includes an actuator body 10 and a handle set screw. The handle set screw is inserted into the actuator body 10 and partially protrudes from the outside of the actuator body 10. This protruding part is called the handle set screw head 20.

[0026] See you together Figure 5 and Figure 6 The second end 12 of the adapter body 1 is provided with a clearance hole 13 and at least two set screw engagement portions 14. The clearance hole 13 extends axially along the adapter body 1 and penetrates the second end 12. The diameter of the clearance hole 13 is configured to be larger than the outer dimensions of the actuator body 10 of the fire damper under test, so as to allow the actuator body 10 to be inserted. At least two set screw engagement portions 14 engage with the handle set screw head 20 exposed outside the actuator body 10. Each set screw engagement portion 14 is associated with the clearance hole 13 in the radial direction of the adapter body 1 and is configured to restrict relative circumferential rotation between the adapter body 1 and the actuator when the handle set screw head 20 is engaged.

[0027] The output end of the external drive tool is detachably connected to the power connection part 2, driving the adapter to rotate, and then applying the detection torque to the actuator of the fire damper through the engaged handle set screw.

[0028] Furthermore, in some embodiments, the diameter of the clearance hole 13 is smaller than the diameter of the maximum envelope circle formed by the outer contour of the actuator body 10 and the exposed handle set screw head 20. The clearance hole 13 may be located in the center, and its diameter may be 25 mm, which is larger than the outer contour size of a typical fire damper actuator body 10, usually 22 mm-24 mm. The axial depth of the clearance hole 13 is greater than the axial height of the actuator insertion portion, thus achieving axial clearance of the actuator.

[0029] Further, in some embodiments, the set screw engagement portion 14 is a stop groove formed on the end face of the second end 12, that is, the stop groove is provided through the end face of the second end 12, so that the stop groove can be axially fitted into the handle set screw head 20 from the end face of the second end 12 to achieve circumferential limiting. The stop groove extends axially along the adapter body 1, and its depth is greater than the axial height of the handle set screw head 20. The width of the stop groove is greater than the diameter of the handle set screw head 20, and its sidewall is constructed to fit against the side of the head to transmit torque. The length direction of the stop groove is consistent with the axial direction of the handle set screw, and its length is greater than the axial height of the handle set screw head 20, so as to achieve axial avoidance of the handle set screw head 20. The stop groove may have a radial opening, that is, the stop groove directly penetrates the sidewall thickness of the adapter body 1, completely avoiding the handle set screw head 20. The number of stop grooves may be four, evenly distributed along the circumference of the adapter body 1, that is, spaced 90° apart circumferentially. The entire installation can be completed by aligning only one stop groove with the handle set screw head 20. There is no need to align both handle set screw heads 20 at the same time, which can save alignment time and improve testing efficiency.

[0030] The torque detection method of the fire damper torque detection device of this utility model is as follows: Holding the adapter, align its second end 12 (the end with the stop groove and clearance hole 13) with the actuator. Then, roughly fit the clearance hole 13 of the adapter onto the actuator body 10 to achieve initial alignment. Next, while slowly fitting it in axially, gently rotate the adapter, using touch or visual observation to align the stop groove on the adapter end face with the handle set screw head 20. Stop rotating when you feel or observe at least one handle set screw head 20 beginning to slide into the radial opening of the corresponding stop groove. Further, maintaining this angle, continue to smoothly push the adapter axially until the actuator body 10 is fully inserted into the clearance hole 13. During this process, all the handle set screw heads 20 will slide in along the radial opening of the stop groove. At this point, the adapter achieves circumferential constraint with the side of the handle set screw head 20 through the side wall of its stop groove, preventing relative rotation in the circumferential direction; simultaneously, the actuator body 10 is accommodated by the clearance hole 13 in the axial direction, achieving axial positioning. Finally, insert and securely connect the output end (such as a square tenon) of the torque wrench or other external drive tool to the power connection portion 2 of the first end 11 of the adapter. Depending on the testing requirements, typically checking the closing torque, apply the torque slowly and smoothly in the desired direction, usually the closing direction. The rotational force generated by the drive tool is transmitted through the adapter to the side wall of the stop groove, and then through the side wall of the stop groove to the side of the handle set screw head 20, transmitting the torque to the handle set screw, thereby driving the entire actuator and the connected fire damper valve shaft to rotate. Subsequent data recording or analysis can be performed simultaneously.

[0031] By implementing this utility model, the following beneficial effects can be achieved: The adapter for testing the torque of a fire damper of this utility model utilizes the original handle set screw of the actuator for fixation, enabling torque testing of the valve body without removing the actuator, thus greatly improving testing efficiency.

[0032] The fire damper torque detection device of this utility model has a rigid connection between the adapter and the actuator through a set screw, and the torque transmission path is clear. It can accurately measure the operating torque of the fire damper, detect potential defects such as increased friction in time, and prevent the fire damper from failing in a fire.

[0033] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, without departing from the concept of the present utility model, the above embodiments or technical features can be freely combined, and several modifications and improvements can be made. These all fall within the protection scope of the present utility model, that is, the embodiments described "in some embodiments" can be freely combined with any of the embodiments above and below. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. An adapter for testing the torque of a fire damper, characterized in that, include: The adapter body (1) has a first end (11) and a second end (12) disposed opposite to each other along its axial direction. The power connection part (2) connected to the external driving tool is integrally formed on the first end (11). The second end (12) is provided with: A clearance hole (13) extends axially and penetrates the second end (12). The diameter of the clearance hole (13) is configured to be larger than the outer dimensions of the actuator body (10) of the fire damper to be tested, so that the actuator body (10) can be inserted. At least two set screw engagement portions (14) engage with the handle set screw head (20) exposed outside the actuator body (10), each of the set screw engagement portions (14) being associated with the clearance hole (13) in the radial direction of the adapter body (1) and configured to restrict relative circumferential rotation between the adapter body (1) and the actuator when the handle set screw head (20) is engaged.

2. The adapter for testing the torque of a fire damper according to claim 1, characterized in that, The adapter body (1) is a sleeve structure.

3. The adapter for testing the torque of a fire damper according to claim 1 or 2, characterized in that, The top screw engagement part (14) is a stop groove formed on the end face of the second end (12).

4. The adapter for testing the torque of a fire damper according to claim 3, characterized in that, The stop groove has a radial opening.

5. The adapter for testing the torque of a fire damper according to claim 3, characterized in that, The stop groove extends along the axial direction of the adapter body (1) and its depth is greater than the axial height of the handle set screw head (20); the width of the stop groove is greater than the diameter of the handle set screw head (20), and its sidewall is configured to fit against the side of the handle set screw head (20) to transmit torque.

6. The adapter for testing the torque of a fire damper according to claim 3, characterized in that, The number of stop grooves is four, and they are evenly distributed along the circumference of the adapter body (1).

7. The adapter for testing the torque of a fire damper according to claim 1, characterized in that, The aperture size of the clearance hole (13) is smaller than the diameter of the maximum envelope circle formed by the outer contour of the actuator body (10) and the exposed handle set screw head (20).

8. The adapter for testing the torque of a fire damper according to claim 1, characterized in that, The axial depth of the clearance hole (13) is greater than the axial height of the actuator insertion portion.

9. The adapter for testing the torque of a fire damper according to claim 1, characterized in that, The power connection part (2) is provided with an internal connection hole (21), and the cross-sectional shape of the internal connection hole (21) is polygonal.

10. A fire damper torque detection device, characterized in that, Includes an external driving tool and an adapter for detecting the torque of a fire damper as described in any one of claims 1-9. The output end of the external driving tool is detachably connected to the power connection part (2), driving the adapter to rotate, and then applying the detection torque to the actuator of the fire damper through the engaged handle set screw.

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