Hydrogen sensor

Abstract

A hydrogen sensor provided by the present invention comprises an outer fixed shell and a sensing detection module, the lower end of the inner side of the outer fixed shell is provided with a group of lower shells for sealing the lower end of the outer fixed shell, the top shell and the lower shells are connected and fixed through bolts, and the right side of the rear end of the lower shell is provided with a group of gas distribution seats for introducing to-be-detected gas. A group of flow guide cavities used for guiding flow of air pumped into the power transformation equipment are formed in the left side of the interior of the air distribution seat, and a group of sensing detection modules used for detecting the content of hydrogen in the air pumped into the power transformation equipment are arranged on the right side of the flow guide cavities. Compared with the prior art, the device has the following beneficial effects that the content of internal hydrogen in air sucked into the power transformation equipment is detected by using the sensing detection module, dust in the air in the power transformation equipment is filtered by using the dust blocking cover, the detection precision is improved, and the air in the power transformation equipment is divided by using the air dividing channel.

Description

Technical Field

[0001] The invention belongs to the technical field of gas detection for power transformation equipment and relates to a hydrogen sensor. Background Art

[0002] Existing hydrogen sensors have several shortcomings in efficiently detecting hydrogen content in substation equipment. The environment inside the substation equipment is complex, and various substances in the gas and electromagnetic interference can affect the detection effect, which will affect the accuracy and stability of the sensor.

[0003] Conventional countermeasures include regular calibration and maintenance of sensors to ensure their accuracy and the use of multi-sensor fusion technology to improve the reliability of the overall detection system. However, these methods also have disadvantages. Regular calibration and maintenance increase operating costs. Although multi-sensor fusion technology can improve the robustness of the system, it increases the complexity of the system and the difficulty of data processing. Its equipment maintenance and procurement costs are high. Therefore, a hydrogen sensor is urgently needed to solve the above problems. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide a hydrogen sensor to solve the problems raised in the above background technology.

[0005] The present invention is implemented by the following technical solutions: A hydrogen sensor comprises: an outer fixed shell and a sensor detection module, wherein a group of lower shells are provided at the inner lower end of the outer fixed shell to seal the lower end thereof, and the top shell and the lower shell are connected and fixed by bolts; A group of gas distributors for introducing the gas to be detected is provided on the right side of the rear end of the lower shell, a group of guide cavities for guiding the air drawn into the substation equipment is provided on the left side of the gas distributor, and a group of sensor detection modules for detecting the internal hydrogen content in the air drawn into the substation equipment is provided on the right side of the guide cavity; The sensing detection module includes a dust cover and a negative electrode. A group of air guide channels for filtering and guiding the air inside the substation to be detected is provided on the right side of the dust cover. The cross-section of the dust cover when viewed from above is a semicircular structure. A plurality of air holes for guiding air are provided inside the surface of the dust cover. The sensing detection module can be used to detect the internal hydrogen content in the air drawn into the substation. The dust cover can be used to filter the dust in the air inside the substation and improve the detection accuracy.

[0006] As a preferred embodiment, a group of air cavities for air conduction are provided on the inner side of the dust cover, and a group of air diversion channels for diverting the air inside the substation equipment in small portions are provided on the upper end of the air diversion channel. The interior of the air diversion channels is interconnected with the interior of the air cavities, so that the air inside the substation equipment can be diverted by using the air diversion channels.

[0007] As a preferred embodiment, a group of sensing electrodes for detecting the hydrogen content in the air inside the substation is provided on the right side of the gas distribution duct, a group of negative electrodes for transmitting the sensing electrode signals to the external application equipment is provided on the right side of the sensing electrode, and a pin for interconnecting with the inside of the external sleeve is provided on the right side of the negative electrode. The sensing electrode and the negative electrode constitute a 4HYT hydrogen sensor module. When the gas diffuses into the sensor, an oxidation or reduction reaction occurs on the surface of the sensing electrode, and a reverse reaction occurs at the other electrode to form an electric current in the external circuit. Since the speed at which the gas enters the gas distribution duct and the air guide channel is controlled by the turbine guide fan, the generated current is proportional to the hydrogen concentration of the gas outside the sensor, so that the hydrogen content in the current gas can be directly measured.

[0008] As a preferred embodiment, a group of exhaust ducts for discharging excess gas to be detected are provided on the front side of the right end of the air guide channel, and a group of diffusers for expanding the gas outlet range are provided on the front side of the exhaust duct, and the diffuser is a trapezoidal structure in cross-section when viewed from above.

[0009] As a preferred embodiment, the diffuser is arranged in the middle position inside the exhaust pipe, a group of external sleeves are provided on the right side of the air distribution seat, and an external data reading device is sealed and connected to the right side of the external sleeve. A group of exhaust pipes for discharging excess air inside the substation are provided on the front side of the air distribution seat. Excess air inside the substation can be discharged by using the diffuser and the exhaust pipes.

[0010] As a preferred embodiment, a group of outer sealing sleeves for sealing connection with an external pipeline are provided on the front side of the exhaust pipe, a group of turbine guide fans for introducing the gas to be detected are provided on the upper end of the inner side of the outer fixed shell, a group of suction chambers are provided on the outer side of the turbine guide fan, and a group of top shells for sealing the upper end of the turbine guide fan are provided on the upper end of the turbine guide fan, so that the flow speed of the gas to be detected can be controlled by using the turbine guide fan.

[0011] As a preferred embodiment, a group of sealing gaskets for preventing the internal gas from leaking out are provided between the top shell and the lower shell, and a group of air intake pipes for sucking in the internal air of the substation to be tested are provided in the middle position of the lower end of the lower shell, and the interior of the air intake pipes is communicated with the interior of the extraction cavity.

[0012] After adopting the above technical scheme, the beneficial effects of the present invention are: by using the sensing detection module to detect the internal hydrogen content in the air drawn into the substation equipment, using the dust cover to filter the dust in the air inside the substation equipment and improve the detection accuracy, by using the gas branch duct to divert the air inside the substation equipment, when the gas diffuses into the sensor, an oxidation or reduction reaction occurs on the surface of the sensing electrode, and a reverse reaction occurs at the other electrode to form an electric current in the external circuit. Since the speed at which the gas enters the gas branch duct and the air guide channel is controlled by the turbine guide fan, the generated current is proportional to the hydrogen concentration of the gas outside the sensor, so that the hydrogen content in the current gas can be directly measured. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 This is a schematic diagram of a right front oblique top view of a hydrogen sensor of the present invention; Figure 2 It is a schematic diagram of the structure of the lower shell and the intake pipe of a hydrogen sensor of the present invention, viewed from the left oblique front side; Figure 3 This is a schematic diagram of the top view of the interior of a gas separator in a hydrogen sensor of the present invention; Figure 4 A schematic diagram of a top view of the internal structure of a sensing detection device in a hydrogen sensor of the present invention; In the figure: 100 - external fixed shell, 110 - top shell, 120 - lower shell, 130 - air distributor, 140 - exhaust pipe, 150 - external sealing sleeve, 160 - external sleeve, 170 - air intake pipe, 180 - flow guide cavity, 190 - sensor detection module; 19a-dust-proof cover, 19b-air guide channel, 19c-air distribution channel, 19d-sensing electrode, 19e-exhaust channel, 19f-diffuser cover, 19g-negative electrode. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] See also Figure 1-Figure 4 A hydrogen sensor includes: an outer fixed shell 100, a flow guide cavity 180 and a sensor detection module 190, a lower shell 120 is provided at the inner lower end of the outer fixed shell 100 to seal the lower end thereof, and a top shell 110 and the lower shell 120 are fixed by bolts; A group of gas distributors 130 for introducing the gas to be detected is provided on the right side of the rear end of the lower shell 120, a group of guide cavities 180 for guiding the air drawn into the substation equipment is provided on the left side of the gas distributor 130, and a group of sensor detection modules 190 for detecting the internal hydrogen content of the air drawn into the substation equipment is provided on the right side of the guide cavity 180; The sensing detection module 190 includes a dust cover 19a, an air distribution channel 19c, a sensing electrode 19d and a negative electrode 19g. A group of air guide channels 19b for filtering and guiding out the internal air of the substation to be detected is provided on the right side of the dust cover 19a. The cross-section of the dust cover 19a viewed from above is a semicircular structure. A plurality of air holes for guiding air are provided inside the surface of the dust cover 19a. The sensing detection module 190 can be used to detect the internal hydrogen content in the air drawn into the substation. The dust cover 19a can be used to filter the dust in the internal air of the substation and improve the detection accuracy.

[0017] A group of air cavities for air conduction are provided on the inner side of the dustproof cover 19a, and a group of air distribution channels 19c for diverting the air inside the substation equipment into small streams are provided on the upper end of the air distribution channel 19b. The interior of the air distribution channels 19c is interconnected with the interior of the air cavities, so that the air inside the substation equipment can be diverted by using the air distribution channels 19c.

[0018] A group of sensing electrodes 19d for detecting the hydrogen content in the air inside the substation is provided on the right side of the gas distribution channel 19c, a group of negative electrodes 19g for transmitting the sensing electrode 19d signal to the external application equipment is provided on the right side of the sensing electrode 19d, and pins for interconnecting with the inside of the external sleeve 160 are provided on the right side of the negative electrode 19g. The sensing electrode 19d and the negative electrode 19g constitute a 4HYT hydrogen sensor module.

[0019] A group of exhaust ducts 19e for discharging excess gas to be detected are provided on the front side of the right end of the air guide channel 19b, and a group of diffuser covers 19f for expanding the gas outlet range are provided on the front side of the exhaust duct 19e. The cross-section of the diffuser cover 19f viewed from above is a trapezoidal structure.

[0020] The diffuser 19f is arranged in the middle position inside the exhaust pipe 140, a group of external sleeves 160 are arranged on the right side of the air distribution seat 130, and an external data reading device is sealed and connected to the right side of the external sleeve 160. A group of exhaust pipes 140 for discharging excess air inside the substation equipment are arranged on the front side of the air distribution seat 130. The excess air inside the substation equipment can be discharged by using the diffuser 19f and the exhaust pipe 140.

[0021] A group of outer sealing sleeves 150 for sealing connection with an external pipeline are provided on the front side of the exhaust pipe 140, a group of turbine guide fans for introducing the gas to be detected are provided on the upper inner end of the outer fixed shell 100, a group of suction chambers are provided on the outer side of the turbine guide fan, and a group of top shells 110 for sealing the upper end of the turbine guide fan are provided on the upper end of the turbine guide fan. The flow speed of the gas to be detected can be controlled by using the turbine guide fan.

[0022] A group of sealing gaskets are provided between the top shell 110 and the lower shell 120 for preventing the internal gas from leaking out. A group of air intake pipes 170 for sucking in the internal air of the substation to be tested are provided in the middle position of the lower end of the lower shell 120. The interior of the air intake pipe 170 is communicated with the interior of the extraction cavity. A group of outer sealing sleeves 150 for sealingly connecting with external pipelines are provided on the front side of the exhaust pipe 140.

[0023] See also Figure 1-Figure 4 As the first embodiment of the present invention: when the staff needs to detect the air in the relevant substation equipment, the air is connected to the inside of the air intake pipe 170 through an external pipe or other means, and then the staff starts the turbine guide fan, which can transmit the air inside the substation equipment to the inside of the suction chamber through the air intake pipe 170, and discharge the air from the suction chamber to the guide chamber 180 inside the air distribution seat 130, and through the directional guidance of the guide chamber 180, the air inside the substation equipment enters the sensor detection module 190. When the gas enters, the dust cover 19a can first retain the relevant substances in the gas. , and reduce the error generated in gas detection. Then the air enters the gas distribution channel 19c through the gas guide channel 19b. When the gas diffuses into the gas distribution channel 19c, an oxidation or reduction reaction occurs on the surface of the sensing electrode 19d, and a corresponding reverse reaction occurs at the negative electrode 19g, forming an electric current in the external circuit. (Based on the detection principle of the ‌4HYT hydrogen sensor) Since the speed at which the gas enters the gas distribution channel 19c and the gas guide channel 19b is controlled by the turbine guide fan, the current generated is proportional to the hydrogen concentration of the gas outside the sensor, so that the hydrogen content in the current gas can be directly measured and the detection accuracy can be improved.

[0024] See also Figure 1-Figure 4 As the second embodiment of the present invention: Based on the description in the above embodiment, further, since a group of turbine guide fans for introducing the gas to be detected is provided at the upper inner end of the outer fixed shell 100, a group of suction chambers are provided on the outer side of the turbine guide fan, and a group of top shells 110 for sealing the upper end of the turbine guide fan are provided at the upper end of the turbine guide fan, when the staff performs gas content detection according to the method described in the first embodiment, the flow speed of the gas to be detected is controlled by using the turbine guide fan, thereby controlling the air intake amount through the turbine guide fan, and the staff calculates and determines the hydrogen concentration according to the air intake amount and the current.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydrogen sensor, comprising: An external fixed shell (100), a flow guide cavity (180) and a sensor detection module (190), characterized in that: a group of lower shells (120) are provided at the lower end of the inner side of the external fixed shell (100) to seal the lower end thereof, and the top shell (110) and the lower shell (120) are connected and fixed by bolts; A group of gas distribution seats (130) for introducing the gas to be detected is provided on the right side of the rear end of the lower shell (120); a group of flow guide cavities (180) for guiding the air drawn into the substation equipment is provided on the left side inside the gas distribution seat (130); and a group of sensor detection modules (190) for detecting the internal hydrogen content of the air drawn into the substation equipment is provided on the right side of the flow guide cavity (180); The sensing detection module (190) comprises a dust cover (19a), a sensing electrode (19d) and a negative electrode (19g); a group of air guide channels (19b) for filtering and guiding out the air inside the substation to be detected are provided on the right side of the dust cover (19a); the cross section of the dust cover (19a) is a semicircular structure when viewed from above; and a plurality of groups of air holes for guiding air are provided inside the surface of the dust cover (19a).

2. A hydrogen sensor according to claim 1, characterized in that: A group of air cavities for guiding air are provided on the inner side of the dustproof cover (19a), and a group of air distribution channels (19c) for dividing the air inside the power transformer equipment into small streams are provided on the upper end of the air distribution channel (19b), and the interior of the air distribution channels (19c) is communicated with the interior of the air cavity.

3. A hydrogen sensor according to claim 2, characterized in that: A group of sensing electrodes (19d) for detecting the hydrogen content in the air inside the transformer equipment is provided on the right side of the gas distribution channel (19c), a group of negative electrodes (19g) for transmitting the sensing electrode (19d) signal to an external application device is provided on the right side of the sensing electrode (19d), and a pin for interconnecting with the inside of the external sleeve (160) is provided on the right side of the negative electrode (19g).

4. A hydrogen sensor according to claim 3, characterized in that: A group of exhaust ducts (19e) for discharging excess gas to be detected are provided on the front side of the right end of the gas guide channel (19b), and a group of diffuser covers (19f) for expanding the gas outlet range are provided on the front side of the exhaust duct (19e); the diffuser covers (19f) are of a trapezoidal structure in cross-section when viewed from above.

5. A hydrogen sensor according to claim 4, characterized in that: The diffuser cover (19f) is arranged at a middle position inside the exhaust pipe (140), a group of external sleeves (160) are arranged on the right side of the air distribution seat (130), an external data reading device is sealed on the right side of the external sleeve (160), and a group of exhaust pipes (140) for discharging excess air inside the substation equipment are arranged on the front side of the air distribution seat (130).

6. A hydrogen sensor according to claim 5, characterized in that: The front side of the exhaust pipe (140) is provided with a group of outer sealing sleeves (150) for sealingly connecting with an external pipeline, the upper end of the inner side of the outer fixed shell (100) is provided with a group of turbine guide fans for introducing the gas to be detected, the outer side of the turbine guide fan is provided with a group of suction cavities, and the upper end of the turbine guide fan is provided with a group of top shells (110) for sealing the upper end thereof.

7. A hydrogen sensor according to claim 6, characterized in that: A group of sealing pads for preventing the leakage of internal gas is provided between the top shell (110) and the bottom shell (120), and a group of air intake pipes (170) for sucking in the internal air of the substation to be tested is provided at the middle position of the lower end of the bottom shell (120), and the interior of the air intake pipes (170) is communicated with the interior of the extraction cavity.

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