A cleaning device for the sampling aperture of an air sampling fire detector

Abstract

The utility model provides a kind of for air sampling fire alarm detector sampling hole cleaning device, including dust hood and telescopic cleaning mechanism, dust hood is used to cover in air sampling fire alarm detector, one end of telescopic cleaning mechanism is placed in the outside of dust hood, one end is inserted into the inside of dust hood, telescopic cleaning mechanism can be telescopic in dust hood, to make telescopic cleaning mechanism insert into the sampling hole of air sampling fire alarm detector, to realize the cleaning of sampling hole.The device not only can effectively avoid dust falling into cabinet when cleaning the sampling hole of air sampling fire alarm detector, but also can reduce the difficulty of operation, avoid the phenomenon of equipment downtime, signal interruption and other phenomena caused by accidental touch of operator, so as to effectively ensure the operation safety of power plant electric instrument system.

Description

Technical Field

[0001] This utility model belongs to the field of fire protection technology, and specifically relates to a cleaning device for the sampling hole of an air sampling fire detector. Background Technology

[0002] Air sampling fire detection systems, also known as very early fire detection systems, can accurately detect and promptly alarm and trigger fires in their early stages. According to fire protection regulations, the air intake of the sampling tube of the air sampling system must be cleaned periodically.

[0003] In power plant instrumentation cabinets, air sampling systems typically have sampling tubes installed inside the cabinet at the top, with several sampling holes for drawing in air. To ensure the accuracy and reliability of the system's detection, national fire safety regulations mandate regular cleaning and maintenance of the sampling tubes and air intake holes to prevent dust accumulation that could cause blockages or false alarms. Currently, the industry standard for cleaning sampling holes involves maintenance personnel manually clearing them using tools such as thin wires, steel needles, or specialized cleaning rods inserted directly into the downward-facing sampling holes to remove accumulated dust and lint. However, this traditional cleaning method has significant technical flaws and safety hazards:

[0004] 1) High risk of dust accumulation: Since most sampling ports inside the electrical control cabinet are installed downwards, during the unblocking process, dust dislodged by gravity will fall directly downwards. Although operators may try to use dust collection trays, the complex internal structure and extremely cramped space of the cabinet, with its densely packed cables, terminal blocks, and precision circuit boards, make it difficult for the dust collection trays to completely cover all the equipment. This results in a large amount of dust inevitably falling and accumulating on the expensive electrical equipment below (such as PLCs, relays, and power modules). The accumulation of dust can lead to poor heat dissipation, decreased insulation performance, and even serious malfunctions such as short circuits and malfunctions, directly threatening the safe and stable operation of power production.

[0005] 2) High operational risks: The introduction of dust collection trays to solve the dust problem, or the cleaning operation in a confined space, greatly increases the difficulty of the operation. The arms and tools of maintenance personnel are very likely to accidentally touch the surrounding cables and components, which poses a high risk of equipment shutdown, signal interruption or even human damage.

[0006] Therefore, how to solve the problems of dust falling into the cabinet and accidental contact with equipment in traditional operations, and ensure the operational safety of the power plant's electrical and instrumentation systems, is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0007] In view of this, the purpose of this utility model is to provide a cleaning device for the sampling port of an air sampling fire alarm detector. This device can not only effectively prevent dust from falling into the cabinet when cleaning the sampling port of the air sampling fire alarm detector, but also reduce the difficulty of operation and prevent equipment shutdown, signal interruption and other phenomena caused by operators accidentally touching the equipment, thereby effectively ensuring the operational safety of the power plant's electrical instrumentation system.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A cleaning device for the sampling hole of an air sampling fire detector includes a dust collection hood and a telescopic cleaning mechanism. The dust collection hood is used to cover the air sampling fire detector. One end of the telescopic cleaning mechanism is placed outside the dust collection hood, and the other end extends into the dust collection hood. The telescopic cleaning mechanism can extend and retract within the dust collection hood so that it can extend into the sampling hole of the air sampling fire detector to clean the sampling hole.

[0010] Optionally, the dust collection hood includes a dust collection sleeve, a first end cap, and a second end cap, wherein the first end cap and the second end cap are detachably connected to both ends of the dust collection sleeve.

[0011] Optionally, the dust collection sleeve is provided with a first thread and a second thread at both ends, a third thread on the first end cover, and a fourth thread on the second end cover. The first thread and the third thread are engaged, and the second thread and the fourth thread are engaged.

[0012] Optionally, the first thread and the second thread have the same structure.

[0013] Optionally, the lengths of the first thread and the second thread are equal.

[0014] Optionally, the dust collection sleeve, the first end cap, and the second end cap are all made of transparent material.

[0015] Optionally, the first end cap or the second end cap is further provided with a first through hole for the telescopic cleaning mechanism to extend into.

[0016] The diameter of the first through hole is 3mm-6mm, and the fully extended length of the telescopic cleaning mechanism is 100mm-130mm.

[0017] Optionally, the telescopic cleaning mechanism includes a tube, a needle, and a spring. The spring is disposed inside the tube and sleeved on the needle. The needle can extend and retract within the tube under the action of the spring.

[0018] Optionally, the tube body includes a tube body, a first end face, and a second end face. The first end face and the second end face are respectively disposed at both ends of the tube body. A second through hole for the extension and retraction of the needle body is provided on the first end face.

[0019] The tube body has a through groove and a slot. The through groove is arranged along the axial direction of the tube body, and the slot is arranged along the circumferential direction of the tube body and communicates with the through groove.

[0020] The needle body is also provided with a handle, which can slide along the through groove and can be engaged in the slot.

[0021] Optionally, the tube body is bonded to the first end cap or the second end cap.

[0022] As can be seen from the above technical solution, when it is necessary to clean the sampling hole of the air sampling fire alarm detector, firstly, the dust collection hood is placed on the air sampling fire alarm detector, and then the telescopic cleaning mechanism is operated so that the telescopic cleaning mechanism is inserted into the sampling hole of the air sampling fire alarm detector, which can poke out the dust accumulated in the sampling hole. The poke-out dust falls into the dust collection hood, thus achieving the collection of dust.

[0023] Compared with the prior art, the cleaning device for the sampling hole of the air sampling fire detector disclosed in this utility model embodiment has the following technical advantages:

[0024] 1) The telescopic cleaning mechanism can be directly inserted into the sampling hole to specifically remove dust, deposits or blockages, ensuring that the sampling hole is unobstructed and ensuring the sensitivity and accuracy of the detector in collecting air samples;

[0025] 2) The dust collection hood covers the detector during the cleaning process, which can collect the dust and impurities that are cleaned, preventing them from spreading to the surrounding environment or other components inside the detector, effectively preventing dust from falling into the cabinet and reducing the cleaning work after maintenance.

[0026] 3) One end of the telescopic cleaning mechanism is located outside the dust collection hood, allowing operators to complete cleaning without disassembling the detector or going deep into the equipment, reducing the difficulty of operation and avoiding equipment shutdown, signal interruption, and other phenomena caused by operators accidentally touching the equipment;

[0027] 4) External operation and isolated cleaning can reduce mechanical damage to the detector housing, internal circuits and sampling channels, extend the service life of the equipment and protect the operational safety of the power plant's electrical instrumentation system. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the air sampling fire detector sampling hole cleaning device disclosed in the embodiment of this utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the dust collection hood disclosed in the embodiments of this utility model;

[0031] Figure 3 This is a schematic diagram of the telescopic cleaning mechanism disclosed in the embodiments of this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100 - Dust collection hood, 101 - Dust collection sleeve, 102 - First end cap, 103 - Second end cap

[0034] 200. Telescopic cleaning mechanism; 201. Tube body; 202. Needle body; 203. Through groove; 204. Handle. Detailed Implementation

[0035] In view of this, the core of this utility model is to provide a cleaning device for the sampling hole of an air sampling fire alarm detector. This device can not only effectively prevent dust from falling into the cabinet when cleaning the sampling hole of the air sampling fire alarm detector, but also reduce the difficulty of operation and prevent equipment shutdown, signal interruption and other phenomena caused by operators accidentally touching the equipment, thereby effectively ensuring the operational safety of the power plant's electrical instrumentation system.

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Please refer to... Figures 1 to 3 .

[0037] Please refer to Figure 1The cleaning device for the sampling hole of an air sampling fire detector disclosed in this embodiment of the present invention includes a dust collection cover 100 and a telescopic cleaning mechanism 200. The dust collection cover 100 is used to cover the air sampling fire detector. One end of the telescopic cleaning mechanism 200 is placed outside the dust collection cover 100, and the other end extends into the dust collection cover 100. The telescopic cleaning mechanism 200 can extend and retract within the dust collection cover 100 so that the telescopic cleaning mechanism 200 extends into the sampling hole of the air sampling fire detector to clean the sampling hole.

[0038] When it is necessary to clean the sampling hole of the air sampling fire alarm detector, first place the dust collection cover 100 on the air sampling fire alarm detector, and then operate the telescopic cleaning mechanism 200 so that the telescopic cleaning mechanism 200 is inserted into the sampling hole of the air sampling fire alarm detector, which can poke out the dust accumulated in the sampling hole. The poke-out dust falls into the dust collection cover 100, thus achieving the collection of dust.

[0039] Compared with the prior art, the cleaning device for the sampling hole of the air sampling fire detector disclosed in this utility model embodiment has the following technical advantages:

[0040] 1) The telescopic cleaning mechanism 200 can be directly inserted into the sampling hole to specifically remove dust, deposits or blockages, ensuring that the sampling hole is unobstructed and ensuring the sensitivity and accuracy of the detector in collecting air samples;

[0041] 2) The dust collection hood 100 covers the detector during the cleaning process, which can collect the dust and impurities that are cleaned, preventing them from spreading to the surrounding environment or other components inside the detector, effectively preventing dust from falling into the cabinet and reducing the cleaning work after maintenance.

[0042] 3) One end of the telescopic cleaning mechanism 200 is located outside the dust collection hood 100, allowing operators to complete cleaning without disassembling the detector or going deep into the equipment, reducing the difficulty of operation and avoiding equipment shutdown, signal interruption, and other phenomena caused by operators accidentally touching the equipment.

[0043] 4) External operation and isolated cleaning can reduce mechanical damage to the detector housing, internal circuits and sampling channels, extend the service life of the equipment and protect the operational safety of the power plant's electrical instrumentation system.

[0044] This utility model embodiment does not limit the specific structure of the dust collection hood 100. Any structure that meets the usage requirements of this utility model is within the protection scope of this utility model.

[0045] As one embodiment of the present utility model, the dust collection hood 100 disclosed in this embodiment of the present utility model can be a hood structure with one end open.

[0046] In another embodiment of this utility model, the dust collection hood 100 disclosed in this embodiment includes a dust collection sleeve 101, a first end cap 102, and a second end cap 103, wherein the first end cap 102 and the second end cap 103 are detachably connected to both ends of the dust collection sleeve 101. This arrangement facilitates the self-cleaning and component replacement of the dust collection hood 100. When any component of the dust collection sleeve 101, the first end cap 102, or the second end cap 103 is damaged, it can be replaced individually rather than as a whole, thereby reducing consumable consumption.

[0047] As a specific embodiment of the present utility model, the dust collection sleeve 101 disclosed in the present utility model embodiment is provided with a first thread and a second thread at both ends, a third thread on the first end cover 102, and a fourth thread on the second end cover 103. The first thread and the third thread cooperate with each other, and the second thread and the fourth thread cooperate with each other.

[0048] This utility model embodiment does not specifically limit the structure of the first thread and the second thread. Any structure that meets the usage requirements of this utility model is within the protection scope of this utility model.

[0049] The first and second threads can have the same or different structures, such as thread thickness and pitch.

[0050] In order to enable the interchangeability of the first end cap 102 and the second end cap 103, the first thread and the second thread disclosed in the present invention preferably adopt the same structure. With this arrangement, the interchangeability of the first end cap 102 and the second end cap 103 can be achieved.

[0051] As a further embodiment, the first thread and the second thread disclosed in this utility model embodiment have equal lengths. This arrangement further improves the ease of interchangeability between the first end cap 102 and the second end cap 103. This arrangement also facilitates the production of threaded structures using the same set of molds or processing techniques, reducing the manufacturing difficulty and production cost of the parts.

[0052] As a further embodiment, in the air sampling fire detector sampling hole cleaning device disclosed in this utility model embodiment, the dust collection sleeve 101, the first end cap 102, and the second end cap 103 are all made of transparent material. With this configuration, the amount of dust accumulated inside can be directly observed through the transparent components without disassembling the dust collection cover 100, allowing for a determination of whether the dust collection cover 100 itself needs cleaning. Furthermore, the transparent material allows the operator to observe in real time the alignment of the telescopic cleaning mechanism 200 with the sampling hole, as well as the dynamic process of internal dust removal and collection.

[0053] As a further embodiment, in the air sampling fire detector sampling hole cleaning device disclosed in this utility model embodiment, the first end cap 102 or the second end cap 103 is respectively provided with a first through hole for the telescopic cleaning mechanism 200 to extend into. With this configuration, the telescopic cleaning mechanism 200 can extend into the dust collection hood 100 through the first through hole.

[0054] The diameter of the first through hole is 3mm-6mm, and the fully extended length of the telescopic cleaning mechanism 200 is 100mm-130mm.

[0055] It should be noted that the first through hole can be set on the first end cover 102, and the telescopic cleaning mechanism 200 is inserted into the dust collection cover 100 through the first end cover 102. The first through hole can also be set on the second end cover 103, and the telescopic cleaning mechanism 200 is inserted into the dust collection cover 100 through the second end cover 103.

[0056] As a specific embodiment of the present utility model, the first through hole disclosed in the embodiment of the present utility model is provided on the first end cap 102, as shown in the figure.

[0057] This utility model embodiment does not limit the specific structure of the telescopic cleaning mechanism 200. Any structure that meets the usage requirements of this utility model is within the protection scope of this utility model.

[0058] As one embodiment, please refer to Figure 3 The telescopic cleaning mechanism 200 disclosed in this embodiment of the present invention includes a tube 201, a needle 202 and a spring, wherein the spring is disposed inside the tube 201 and sleeved on the needle 202, and the needle 202 can extend and retract inside the tube 201 under the action of the spring.

[0059] As a further embodiment, the tube 201 disclosed in this utility model embodiment includes a tube body, a first end face and a second end face, the first end face and the second end face are respectively disposed at both ends of the tube body, and a second through hole for the extension and retraction of the needle body 202 is provided on the first end face.

[0060] The pipe body has a through groove 203 and a slot. The through groove 203 is arranged along the axial direction of the pipe body, and the slot is arranged along the circumferential direction of the pipe body 201 and is connected to the through groove 203.

[0061] The needle body 202 is also provided with a handle 204, which can slide along the through groove 203 and can be engaged in the slot.

[0062] One end of the spring abuts against the handle 204, and the other end abuts against the first end face.

[0063] When cleaning the sampling hole of the air sampling fire detector, first unscrew the first end cap 102 (the telescopic cleaning mechanism 200 extends into the dust collection hood 100 through the first end cap 102) or the second end cap 103 (the telescopic cleaning mechanism 200 extends into the dust collection hood 100 through the second end cap 103). Then, place the dust collection sleeve 101 over the sampling fire detector, push the handle 204 to compress the spring, until the handle 204 is pushed to the slot, so that the needle 202 extends out of the tube body and inserts into the sampling hole of the air sampling fire detector. In this way, the dust accumulated in the sampling hole can be pushed out, and the pushed-out dust falls into the dust collection hood 100, which collects the dust. When the cleaning work is completed, push the handle 204 out of the slot and return it to the initial position.

[0064] The tube body 201 is bonded to the first end cap 102 or the second end cap 103 to ensure the firmness of the connection between the tube body 201 and the first end cap 102 or the second end cap 103.

[0065] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the term "comprising" or any other variation thereof is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0066] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0067] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for cleaning the sampling port of an air sampling fire detector, characterized in that, The device includes a dust collection hood and a telescopic cleaning mechanism. The dust collection hood is used to cover the air sampling fire detector. One end of the telescopic cleaning mechanism is placed outside the dust collection hood, and the other end extends into the dust collection hood. The telescopic cleaning mechanism can extend and retract within the dust collection hood so that it can extend into the sampling hole of the air sampling fire detector to clean the sampling hole.

2. The cleaning device for the sampling hole of an air sampling fire detector according to claim 1, characterized in that, The dust collection hood includes a dust collection sleeve, a first end cap, and a second end cap, wherein the first end cap and the second end cap are detachably connected to both ends of the dust collection sleeve.

3. The cleaning device for the sampling hole of an air sampling fire detector according to claim 2, characterized in that, The dust collection sleeve has a first thread and a second thread at both ends, a third thread on the first end cap, and a fourth thread on the second end cap. The first thread and the third thread are engaged, and the second thread and the fourth thread are engaged.

4. The cleaning device for the sampling hole of an air sampling fire detector according to claim 3, characterized in that, The first thread and the second thread have the same structure.

5. The cleaning device for the sampling hole of an air sampling fire detector according to claim 3, characterized in that, The lengths of the first thread and the second thread are equal.

6. The cleaning device for the sampling hole of an air sampling fire detector according to claim 2, characterized in that, The dust collection sleeve, the first end cap, and the second end cap are all made of transparent material.

7. The cleaning device for the sampling hole of an air sampling fire detector according to claim 2, characterized in that, The first end cap or the second end cap is also provided with a first through hole for the telescopic cleaning mechanism to extend into; The diameter of the first through hole is 3mm-6mm, and the fully extended length of the telescopic cleaning mechanism is 100mm-130mm.

8. The cleaning device for the sampling hole of an air sampling fire detector according to claim 2, characterized in that, The telescopic cleaning mechanism includes a tube, a needle, and a spring. The spring is disposed inside the tube and sleeved on the needle. The needle can extend and retract within the tube under the action of the spring.

9. The cleaning device for the sampling hole of an air sampling fire detector according to claim 8, characterized in that, The tube body includes a tube body, a first end face and a second end face, the first end face and the second end face are respectively disposed at both ends of the tube body, and a second through hole for the extension and retraction of the needle body is provided on the first end face; The tube body has a through groove and a slot. The through groove is arranged along the axial direction of the tube body, and the slot is arranged along the circumference of the tube body and communicates with the through groove. The needle body is also provided with a handle, which can slide along the through groove and can be engaged in the slot.

10. The cleaning device for the sampling port of an air sampling fire detector according to claim 8, characterized in that, The tube body is bonded to the first end cap or the second end cap.

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