SF6 gas leak detector with probe protection structure

Abstract

An SF6 gas leak detector with a probe protection structure comprises a leak detector body, the leak detector body is connected with a flexible feeler lever, the flexible feeler lever is provided with a probe, and the SF6 gas leak detector further comprises a probe protection assembly and a probe cleaning assembly. A protective cover is movably mounted on the outer edge of the probe; the probe protection assembly comprises a slot and a fixed bulge, and a first space taking the slot as an inner layer and a second space taking the protective cover as an outer layer are formed; the probe cleaning assembly comprises a high-pressure air pump, an air pipe and an air valve switch, the upper side of the slot is provided with a through air injection interface, and the lower side of the slot is provided with an air hole. A probe protection assembly and a probe cleaning assembly are arranged, a protective cover on the outer edge of a probe can shield airflow, the situation that the SF6 gas leakage detection result is affected by overlarge airflow is avoided, and meanwhile, due to dual protection of the protective cover and a slot, the situation that the probe is damaged by external dust and grease is better avoided; the high-pressure air pump injects compressed air into the insertion groove from the air injection connector in the upper side, air blowing cleaning is conducted on the probe, and dust is blown out from the air holes in the lower side of the insertion groove.

Description

TECHNICAL FIELD

[0001] The utility model provides a SF6 gas leak detector with probe protection structure. BACKGROUND

[0002] The gas quantitative leak detector adopts negative ion capture principle, and has high sensitivity, good stability, fast response speed, simple operation, large moving range, can rapidly and accurately quantitatively detect the leakage point and annual leakage rate of SF6 circuit breaker and GIS.

[0003] The sealing kit can wrap and protect the probe when the probe is not used, so that dust and other foreign matters are prevented from entering the probe hole, and the probe is effectively protected, but the following problems still exist in actual application:

[0004] 1. When SF6 gas leak detection is carried out in a windy area, the detection may have errors, there is a lack of a probe protective cover that can block airflow, and the structure for protecting the probe is relatively simple and lacks double protection.

[0005] 2. When the probe is not used, there is a lack of a cleaning structure for the probe, and the dust on the probe cannot be cleaned. CONTENT OF THE UTILITY MODEL

[0006] In view of the above, the utility model provides a SF6 gas leak detector with probe protection structure to solve the problems in the background art.

[0007] The utility model discloses a technical scheme that solves its technical problem is provided with SF6 gas leak detector with probe protection structure, including leak detector body, leak detector body connects flexible probe rod, be provided with probe on the flexible probe rod, still include probe protection subassembly, probe cleaning subassembly, the probe can be inserted in probe protection subassembly, probe cleaning subassembly can clean the probe inserted in probe protection subassembly, the outer edge of probe is movably installed with the protective cover, and the opening side wall of protective cover is opened with fixed recess, probe protection subassembly includes the slot that can cooperate with the probe and insert, and the fixed protrusion that can cooperate with fixed recess and install, the inner wall of slot is provided with a plurality of can pinch the probe elastic sheet, the outermost end of slot is provided with sealing element, the slot sets up on the outer wall of leak detector body, and the fixed protrusion sets up on leak detector body outer wall around the slot, and the protective cover installs on leak detector body outer wall through fixed recess and fixed protrusion cooperation, makes the probe through sealing element and insert in the slot, forms the first space with the slot as the inner layer and the second space with the protective cover as the outer layer, probe cleaning subassembly includes high pressure gas pump, gas pipe, the gas valve switch of the control high pressure gas pump opening and closing, and high pressure gas pump and gas valve switch all set up on leak detector body outer wall, and one end of gas pipe is connected with high pressure gas pump, the upper side of slot is provided with the gas injection interface of through, and the lower side of slot is opened with a plurality of gas holes, and the other end of gas pipe is provided with the gas injection end of movable connection with gas injection interface, and high pressure gas pump injects compressed air into the slot, and carries out blowing cleaning to the probe inserted in the slot.

[0008] Preferably, a plurality of keys and a display screen are arranged on the leak detector body, and an output end of the probe is connected to an input end of the display screen.

[0009] Preferably, the sealing element comprises a sealing ring, and a plurality of sealing fins are uniformly distributed on an inner ring of the sealing ring.

[0010] Preferably, the elastic sheet is a metal elastic sheet, and a soft rubber sleeve is wrapped around the metal elastic sheet.

[0011] Preferably, an alarm light pipe is arranged on the leak detector body.

[0012] Preferably, the probe and the flexible probe rod are connected through threads.

[0013] The SF6 gas leak detector has the probe protection subassembly and the probe cleaning subassembly, the protective cover of the probe outer edge can shield airflow, avoids that excessive airflow influences the SF6 gas leak detection result, simultaneously, the double protection of the protective cover and the slot better avoids that external dust and grease damage the probe.

[0014] When the probe is not used, the probe is plugged into the slot, the high-pressure air pump injects compressed air from the upper air injection port into the slot, blows the probe to clean, blows the dust from the air hole at the lower side of the slot, and then covers the protective cover to avoid dust adhering to the probe. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic diagram of the utility model.

[0016] Figure 2 is Figure 1 is a partial enlarged view of part A in the middle.

[0017] Figure 3 is a plane actual view of the probe protection assembly and the probe cleaning assembly.

[0018] Figure 4 is a structural schematic diagram of the slot and the sealing piece.

[0019] In the figure, 1, leak detector body; 2, button; 3, display screen; 4, alarm light pipe; 5, flexible probe rod; 6, air valve switch; 7, high-pressure air pump; 8, air pipe; 9, probe; 10, protective cover; 11, slot; 12, fixed protrusion; 13, air hole; 14, air injection port; 15, sealing fin; 16, metal elastic sheet; 17, fixed groove; 18, sealing ring. DETAILED DESCRIPTION

[0020] The utility model will be further explained in connection with the drawings and some implementation manners.

[0021] In Figures 1-4 In the middle, an SF6 gas leak detector with probe protection structure is provided, including leak detector body 1, the leak detector body 1 is connected flexible probe rod 5, be provided with probe 9 on the flexible probe rod 5, still include probe protection assembly, probe cleaning assembly, the probe 9 can be plugged into the probe protection assembly, the probe cleaning assembly can clean the probe 9 plugged into the probe protection assembly, the outer edge of the probe 9 is provided with protective cover 10, and the opening side wall of protective cover 10 is provided with fixed groove 17, when using leak detector body 1 to carry out SF6 gas leak detection work, the protective cover 10 of probe 9 outer edge can shield airflow, avoid excessive airflow to influence SF6 gas leak detection result, guarantee the smooth operation of leak detection work.

[0022] In the embodiment, the probe protection assembly comprises a slot 11 into which the probe 9 is inserted, and a fixing protrusion 12 which is installed in the fixing groove 17. The inner wall of the slot 11 is provided with a plurality of elastic sheets which can clamp the probe 9. The outermost end of the slot 11 is provided with a sealing member. The slot 11 is arranged on the outer wall of the leak detector body 1. The fixing protrusion 12 is arranged around the slot 11 on the outer wall of the leak detector body 1. When the probe 9 is not used, the protective cover 10 is installed on the outer wall of the leak detector body 1 through the fixing groove 17 and the fixing protrusion 12. The probe 9 is inserted into the slot 11 through the sealing member. The protective cover 10 and the slot 11 provide double protection for the probe 9, so that the probe 9 is better protected from external dust.

[0023] In the embodiment, the probe cleaning assembly comprises a high-pressure air pump 7, an air pipe 8, and an air valve switch 6 which controls the opening and closing of the high-pressure air pump 7. The high-pressure air pump 7 and the air valve switch 6 are arranged on the outer wall of the leak detector body 1. One end of the air pipe 8 is connected to the high-pressure air pump 7. The upper side of the slot 11 is provided with a gas injection port 14. The lower side of the slot 11 is provided with a plurality of air holes 13. The other end of the air pipe 8 is provided with a gas injection end which is movably connected to the gas injection port 14. First, the protective cover 10 is sleeved on the flexible probe rod 5. The probe 9 is inserted into the slot 11. The gas injection end of the air pipe 8 is tightly connected to the gas injection port 14. The air valve switch 6 is opened. The high-pressure air pump 7 injects compressed air into the slot 11 through the upper gas injection port 14. The probe 9 is cleaned by air blowing. Dust is blown out of the air holes 13 on the lower side of the slot 11. Then, the gas injection end of the air pipe 8 is pulled out. The protective cover 10 is closed. The probe 9 is prevented from being attached with dust.

[0024] In the embodiment, the sealing member comprises a sealing ring 18. A plurality of sealing fins 15 are uniformly distributed on the inner ring of the sealing ring 18. The probe 9 is inserted into the slot 11. The sealing ring 18 and the sealing fins 15 play a sealing role. External dust and oil are better prevented from damaging the probe 9.

[0025] In the embodiment, the elastic sheet is a metal elastic sheet 16. The metal elastic sheet 16 is wrapped with a soft rubber sleeve. The metal elastic sheet 16 elastically fixes the probe 9 which is inserted into the slot 11. The probe 9 is prevented from falling out of the slot 11.

[0026] In the embodiment, the leak detector body 1 is provided with an alarm light pipe 4. When the leaked gas is found, the alarm light pipe 4 emits light and flashes.

[0027] In the embodiment, the probe 9 and the flexible probe rod 5 are connected through threads. When the probe 9 needs to be replaced, the old probe 9 is counterclockwise rotated and removed. A spare probe 9 provided in a packaging box is clockwise rotated and installed.

[0028] In the embodiment, the control circuit is a common circuit in the field of circuit, the leak detector body 1 is provided with a storage battery to provide electric energy for the device, and a person skilled in the art can realize it without further description.

[0029] In the embodiment, the SF6 gas leak detector is a common SF6 gas leak detector device, such as an XP-1A type SF6 gas leak detector, a COP35 type SF6 gas leak detector, etc.

[0030] In the embodiment, the high-pressure air pump 7 is a common miniature high-pressure air pump, such as an AC1008045A100 alternating current miniature piston air pump, etc.

[0031] In the embodiment, when the leak detector body 1 is used for SF6 gas leak detection, the protective cover 10 on the outer edge of the probe 9 can block the airflow, and when the leaked gas is found, the alarm light pipe 4 emits light and flashes; in the case that the probe 9 is not used, the protective cover 10 is installed on the outer wall of the leak detector body 1 through the fixed groove 17 and the fixed protrusion 12, the probe 9 is inserted into the insertion slot 11, the sealing ring 18 and the sealing fin 19 play a sealing role, the metal elastic sheet 20 elastically fixes the probe 9 inserted into the insertion slot 11, the double protection of the protective cover 10 and the insertion slot 11 can better avoid damage to the probe 9 caused by external dust and grease; when the probe 9 needs to be cleaned, the gas injection end of the air pipe 8 is tightly connected with the gas injection interface 14, the protective cover 10 is sleeved on the flexible probe rod 5, the probe 9 is inserted into the insertion slot 11, the gas injection end of the air pipe 8 is tightly connected with the gas injection interface 14, the air valve switch 6 is opened, the high-pressure air pump 7 injects compressed air from the upper gas injection interface 14 into the insertion slot 11, and the probe 9 is cleaned by air blowing, and then the gas injection end of the air pipe 8 is pulled out, the protective cover 10 is covered, and dust adhered to the probe 9 is avoided.

[0032] It is worth mentioning that: in the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited. In the utility model, unless otherwise specifically provided and limited, the terms "installation", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, and for ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0033] It is apparent for a person skilled in the art that the utility model patent is not limited to the details of the exemplary embodiments described above, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the utility model patent. Therefore, the embodiments should be considered in all respects as illustrative and not restrictive, the scope of the utility model patent being defined by the appended claims rather than the above description, and it is therefore intended to embrace all changes and modifications that fall within the meaning and scope of the equivalences of the claims. Any reference signs in the claims should not be considered as limiting the claims concerned.

Claims

1. A SF6 gas leak detector with a probe protection structure, comprising a leak detector body, the leak detector body is connected with a flexible probe rod, and a probe is arranged on the flexible probe rod, characterized in that: The probe protection assembly and the probe cleaning assembly are also included, the probe can be plugged into the probe protection assembly, and the probe cleaning assembly can clean the probe plugged into the probe protection assembly; The outer edge of the probe is movably mounted with a protective cover, and a fixing groove is formed in the open side wall of the protective cover; The probe protection assembly includes a slot into which the probe is plugged and a fixing protrusion which is mounted with the fixing groove, the inner wall of the slot is provided with a plurality of elastic sheets capable of clamping the probe, the outermost end of the slot is provided with a sealing element, the slot is arranged on the outer wall of the leak detector body, the fixing protrusion is arranged around the slot on the outer wall of the leak detector body, the protective cover is mounted on the outer wall of the leak detector body through the fixing groove and the fixing protrusion, the probe is plugged into the slot through the sealing element, a first space with the slot as an inner layer and a second space with the protective cover as an outer layer are formed; The probe cleaning assembly includes a high-pressure air pump, an air pipe, and an air valve switch for controlling the opening and closing of the high-pressure air pump, the high-pressure air pump and the air valve switch are arranged on the outer wall of the leak detector body, one end of the air pipe is connected with the high-pressure air pump, the slot is provided with a gas injection port penetrating the upper side of the slot, a plurality of air holes are formed in the lower side of the slot, the other end of the air pipe is provided with a gas injection end which is movably connected with the gas injection port, the high-pressure air pump injects compressed air into the slot to blow dust and clean the probe plugged into the slot.

2. The SF6 gas leak detector with a probe protection structure according to claim 1, characterized in that: A plurality of keys and a display screen are arranged on the leak detector body, and the output end of the probe is connected with the input end of the display screen.

3. The SF6 gas leak detector with probe protection structure according to claim 1, characterized in that: The sealing element includes a sealing ring, and a plurality of sealing fins are uniformly distributed on the inner ring of the sealing ring.

4. The SF6 gas leak detector with probe protection structure according to claim 1, characterized in that: The elastic sheet is a metal elastic sheet, and a soft rubber sleeve is wrapped around the metal elastic sheet.

5. The SF6 gas leak detector with probe protection structure according to claim 1, characterized in that: An alarm light pipe is arranged on the leak detector body.

6. The SF6 gas leak detector with probe protection structure according to claim 1, characterized in that: The probe and the flexible probe rod are connected through threads.

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