Combustible gas detector detection equipment

Abstract

The utility model provides combustible gas detector detection equipment, and belongs to the field of instrument detection. According to the technical scheme, the device comprises air source equipment and a long rod mechanism; a transparent cover is arranged at one end of the long rod mechanism and is of a trapezoidal structure with an inner cavity, the wide bottom face of the trapezoidal structure faces upwards and is provided with an opening communicated with the inner cavity, a pipeline is arranged on the side face of one side of the cover and connected to air source equipment, and a backflow pipeline is arranged on the side face of the other side of the cover. The device has the beneficial effects that the device is simple in structure and convenient to operate, realizes long-distance detection of the combustible gas detector mounted at a high position, also realizes the convenience of detection by adopting various standard gases, and improves the working efficiency.

Description

Technical Field

[0001] The utility model relates to the field of instrument detection, in particular to a combustible gas detector detection device. Background Art

[0002] A combustible gas detector is an instrument used to detect the concentration of combustible gas in the environment. It is mainly used to protect personnel and equipment from the dangers of fire and explosion caused by combustible gas leakage.

[0003] The working principle of combustible gas detectors for detecting combustible gas is generally based on two methods: one is through electrochemical sensors, and the other is through infrared sensors. Electrochemical sensors are based on the chemical reaction between combustible gas and electrochemical elements. When the combustible gas comes into contact with the electrodes in the sensor, the chemical reaction causes a change in the current. By measuring the change in current, the detector can determine the gas concentration; infrared sensors use the absorption characteristics of gas molecules to infrared radiation. Different gases absorb different wavelengths of infrared light. When the combustible gas passes through the infrared sensor, it absorbs infrared light of a specific wavelength. By measuring the amount of infrared light absorbed, the detector can determine the concentration of the gas.

[0004] Regardless of the type of sensor used, combustible gas detectors usually determine whether the gas concentration has reached a dangerous level based on a pre-set alarm threshold. Once a dangerous gas concentration is detected, the detector will emit a sound, light or other alarm signal to remind personnel to take appropriate safety measures.

[0005] Combustible gas detectors can detect a variety of combustible gases, such as methane, ethane, propane, butane, ethanol, etc. The specific needs are determined according to the configuration and sensor of the combustible gas detector.

[0006] The combustible gas detectors installed on the oil production platform need to be functionally tested with standard gases every year (depending on actual needs, it is often necessary to use multiple standard gases for testing) to ensure their normal operation. However, the combustible gas detectors are generally installed at a relatively high position, which is not easy for staff to reach, and it is difficult to transport the standard gas to the combustible gas detector. For this reason, this article provides a combustible gas detector detection device. Utility Model Content

[0007] The utility model aims to provide a combustible gas detector detection device which is simple to operate and can realize long-distance detection.

[0008] The utility model is achieved through the following measures:

[0009] A combustible gas detector detection device, characterized in that it includes a gas source device and a long rod mechanism;

[0010] A transparent cover is provided at one end of the long rod mechanism. The cover is transparent in order to facilitate observation of the alarm signal of the combustible gas detector. The cover is a trapezoidal structure provided with an inner cavity. The wider bottom surface of the trapezoidal structure faces upward and is provided with an opening connected to the inner cavity. A pipeline is provided on one side of the cover to connect to the gas source device. A return pipeline is provided on the other side of the cover. The free end of the return pipeline is connected to the outside atmosphere or a gas collection box. The gas source device stores high-pressure standard combustible gas, and the combustible gas is transported to the cover through a pipeline.

[0011] When in use, the staff delivers the cover to the combustible gas detector through the long rod mechanism and covers the combustible gas detector, and then transports the combustible gas into the cover to detect the combustible gas detector. The cover prevents the combustible gas from diffusing, so that less combustible gas can be used to complete the detection, thereby improving the detection efficiency and preventing the combustible gas from diffusing to the dangerous area to prevent danger.

[0012] The specific features of the utility model also include:

[0013] The air source device comprises a bottom plate and a handle mechanism arranged on one side of the bottom plate;

[0014] A compressed air storage cylinder is arranged in the middle of the bottom plate, and a plurality of combustible gas cylinders storing different combustible gases are arranged on the bottom plate outside the compressed air storage cylinder. Each of the combustible gas cylinders stores corresponding high-pressure standard combustible gases, such as methane gas cylinders, ethane gas cylinders, propane gas cylinders, etc. The upper ends of the compressed air storage cylinder and the plurality of the combustible gas cylinders are provided with corresponding pipelines connected to the cover body.

[0015] A control valve mechanism is arranged on the bottom plate through a bracket, and the control valve mechanism includes a shell body which is arranged hollow inside, a valve body is arranged in the shell, an air outlet and an air inlet corresponding to the compressed air storage cylinder are respectively arranged in the middle of the upper side surface and the middle of the lower side surface of the valve body, and a plurality of air outlets and air inlets corresponding to the flammable gas storage cylinder are arranged in the areas of the upper side surface and the lower side surface of the valve body away from the middle part, the compressed air storage cylinder is connected to the air inlet through pipeline 1, and a plurality of flammable gas storage cylinders are connected to the corresponding air inlet through pipeline 2, the air outlet is connected to a main pipeline, and a plurality of the air outlets are connected to branch pipelines, and the free ends of the plurality of branch pipelines are all connected to the main pipeline, and the free end of the main pipeline is connected to the cover body, and the shell is specifically provided with pipe holes corresponding to the air outlet, air inlet, air outlet and air inlet to facilitate the connection of the pipelines.

[0016] The valve body comprises a circular shaft, an upper circular plate is arranged at the upper end of the circular shaft, the upper side surface of the upper circular plate is arranged on the upper side surface inside the shell, a lower circular plate is arranged at the lower end of the circular shaft, the lower side surface of the lower circular plate is arranged on the lower side surface inside the shell, specifically, the shell is divided into upper and lower parts, the upper and lower parts of the shell are connected into a whole by bolts, the upper and lower parts of the shell are respectively connected to the upper circular plate and the lower circular plate by bolts, the shell plays the role of supporting the valve body and sealing, and a middle circular plate which is slidably matched with the upper circular plate and the lower circular plate is rotatably arranged on the periphery of the circular shaft;

[0017] The upper circular plate is provided with a plurality of through-going air outlets along the circumference, an upper annular cavity allowing air circulation is provided inside the upper circular plate, the upper annular cavity is provided around the circular axis, a plurality of upper extension cavities are provided on the outer side surface of the inner side of the upper annular cavity, a plurality of the upper extension cavities are evenly distributed along the upper annular cavity, a single upper extension cavity is provided between the air outlets on two adjacent sides, a plurality of upper circular holes penetrating to the corresponding upper extension cavities are provided on the lower side surface of the upper circular plate, a plurality of the upper circular holes are distributed on the same circumference as the plurality of the air outlets and a single upper circular hole is distributed between the air outlets on two adjacent sides, and a plurality of the air outlets penetrating to the annular cavity are provided on the upper side surface of the upper circular plate;

[0018] The lower circular plate is symmetrical in structure with the upper circular plate, that is, it is provided with a corresponding number of air inlets, a lower annular cavity, a number of lower extension cavities, a number of lower circular holes and a number of air inlets;

[0019] The main pipe is arranged around the periphery of a plurality of the air outlets, that is, the plurality of the air outlets are arranged inside the main pipe, and the pipe 1 is arranged around the periphery of a plurality of the air inlets, that is, the plurality of the air inlets are arranged inside the pipe 1;

[0020] The middle circular plate is provided with a through middle hole, and the middle hole has the same circumference as the air outlet or the air inlet. When the middle circular plate rotates, when the middle hole is connected with the air outlet and the air inlet, the corresponding standard combustible gas in the combustible gas storage cylinder will flow into the main pipeline through the pipeline 2, the valve body and the branch pipeline, and then flow into the cover body. At this time, the air inlet and the air outlet are closed by the middle circular plate. When the middle circular plate rotates, the air inlet and the air outlet are connected. At this time, the air outlet and the air inlet are closed, and the high-pressure air in the compressed air storage cylinder will flow into the cover body through the pipeline 1, the valve body and the main pipeline.

[0021] A gear 1 is arranged on the periphery of the middle circular plate, and a rotating shaft 1 is arranged in the corresponding shell. A gear 2 meshing with the gear 1 is arranged on the periphery of the rotating shaft 1. A handle 2 is arranged on the upper end of the rotating shaft 1 after passing through the shell. By rotating the handle 2, the gear 2 is driven to rotate, and then the gear 1 is driven to rotate, and then the middle circular plate is driven to rotate.

[0022] The long rod mechanism includes a round long rod, a T-shaped slide groove is arranged on the side of the round long rod, the T-shaped slide groove is close to the top of the round long rod where the cover body is arranged, a matching T-shaped slider is arranged in the T-shaped slide groove, a matching rod is hinged on the upper side of the T-shaped slider, the free end of the rod is hinged on one side of the cover body, and the other side of the cover body is hinged on the top of the round long rod.

[0023] The cam is provided with a first end surface of the T-shaped slide groove, the first end surface of the T-shaped slide groove is provided with a second end surface of the T-shaped slide groove, and the second end surface of the T-shaped slide groove is provided with a second end surface of the T-shaped slide groove.

[0024] The handle mechanism comprises a pair of support rods obliquely arranged on one side of the bottom plate, and a cross bar is arranged between the support rods on both sides;

[0025] A second rotating shaft is arranged on the cross bar through a pair of bracket plates, a second T-shaped slider is arranged in the middle of the side surface of the second rotating shaft, a second T-shaped slide groove cooperating with the second T-shaped slider is arranged on the side surface of the long round rod away from the cover body, the second T-shaped slide groove is close to the lower end of the long round rod and passes through the lower end surface of the long round rod, and the second T-shaped slider is slidably arranged in the second T-shaped slide groove.

[0026] The cam is provided with a plurality of teeth on the inner side of the two guide wheels, and a plurality of teeth on the inner side of the two guide wheels are provided on the outer side of the two guide wheels, and a plurality of teeth on the inner side of the two guide wheels are provided on the outer side of the two guide wheels, and a plurality of teeth on the inner side of the two guide wheels are provided on the outer side of the two guide wheels, and a plurality of teeth on the inner side of the two guide wheels are provided on the outer side of the two guide wheels, and a plurality of teeth on the inner side of the two guide wheels are provided on the outer side of the two guide wheels, and a plurality of teeth on the inner side of the two guide wheels are provided on the outer side of the two guide wheels, and a plurality of teeth on the inner side of the two guide wheels are provided.

[0027] A clamping plate is slidably provided on the outer periphery of the second rotating shaft, and the clamping plate is arranged on a side away from the ratchet. A threaded rod 2 is rotatably provided on the side of the clamping plate away from the ratchet. A handle 4 is provided after the free end of the threaded rod 2 passes through the bracket plate on the corresponding side. The threaded rod 2 is threadedly matched with the corresponding bracket plate. The position of the clamping plate can be adjusted by rotating the handle 4, so that the clamping plate can fix the round long rod.

[0028] Working principle: First, the long rod mechanism is installed on the gas source equipment through the cooperation of the T-shaped slider 2 and the T-shaped slot 2, and then the position of the cover body is adjusted by rotating the long rod mechanism upward and the angle of the cover body is adjusted through the handle 1, so that the cover body covers the periphery of the combustible gas detector to be tested, and then the handle 4 is rotated so that the clamping plate fixes the round long rod. In addition, according to specific needs, in the process of adjusting the height of the long rod mechanism, the pawl can be released from the ratchet by pulling up the handle 3, so as to adjust the long rod mechanism downward;

[0029] After the cover body is covered on the combustible gas detector to be tested, the handle 2 is rotated to rotate the middle circular plate, so that the middle hole is connected with one group of the gas outlet and the gas inlet, and then the corresponding standard combustible gas is filled into the cover body to detect the combustible gas detector. After the detection is completed, the handle 2 is rotated to connect the air inlet and the air outlet. At this time, all the gas outlets and the gas inlet are closed, and the high-pressure air in the compressed air storage cylinder will flow into the cover body through the pipeline 1, the valve body and the main pipeline, and the combustible gas in the cover body is compressed into the return pipeline, and the combustible gas is discharged to the outside atmosphere or the gas collection box through the return pipeline for subsequent processing. At the same time, the purity of the cover body can be guaranteed, that is, the previous standard combustible gas is excluded to avoid affecting another combustible gas behind, thereby affecting the accuracy of the detection. Then, the handle 2 is rotated again to connect another group of the gas outlet and the gas inlet, and another standard combustible gas is used to detect the combustible gas detector;

[0030] The above embodiment only exemplifies the detection situation of a single combustible gas detector that can detect multiple combustible gases. Obviously, the present device can also detect two combustible gas detectors at different positions according to the above similar method.

[0031] The beneficial effects of the utility model are as follows: the device has a simple structure and is easy to operate, and can realize long-distance detection of combustible gas detectors installed at high places. At the same time, the device also realizes the convenience of using a variety of standard gases for detection, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model.

[0033] Figure 2 It is the overall structural front view of the embodiment of the utility model.

[0034] Figure 3 It is a schematic diagram of the structure of the gas source equipment in the embodiment of the utility model.

[0035] Figure 4 for Figure 1 A is an enlarged view of the middle image.

[0036] Figure 5 It is a schematic diagram of the internal structure of the shell part of the control valve mechanism in the embodiment of the utility model after sectioning.

[0037] Figure 6 It is a schematic diagram of the valve body structure in an embodiment of the utility model.

[0038] Figure 7 It is a schematic diagram of the cross-sectional structure of the upper circular plate in the embodiment of the utility model.

[0039] Figure 8 It is a structural schematic diagram of the long rod mechanism in the embodiment of the utility model.

[0040] The accompanying drawings are marked as follows: 1, gas source equipment; 2, long rod mechanism; 3, cover body; 4, bottom plate; 5, combustible gas cylinder; 6, air gas cylinder; 7, pipeline 2; 8, pipeline 1; 9, branch pipeline; 10, main pipeline; 11, control valve mechanism; 12, handle 2; 13, handle mechanism; 14, handle 3; 15, spring; 16, pawl; 17, ratchet; 18, clamp; 19, threaded rod 2; 20, rotating shaft 2; 21, handle 4; 22, Shell; 23, gear 2; 24, upper circular plate; 25, gear 1; 26, lower circular plate; 27, air outlet; 28, air outlet; 30, middle circular plate; 31, middle hole; 33, air inlet; 34, lower circular hole; 35, upper circular hole; 36, upper extension cavity; 37, upper annular cavity; 39, return line; 40, rod 1; 42, T-shaped slide groove 1; 43, rod 2; 44, long round rod; 45, slide groove 2; 46, handle 1; 47, T-shaped slide groove 2. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0042] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0044] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0045] Example 1

[0046] 10. Reference Figure 1 , a combustible gas detector detection device, comprising a gas source device 1 and a long rod mechanism 2;

[0047] A transparent cover body 3 is provided at one end of the long rod mechanism 2. The cover body 3 is transparent in order to facilitate observation of the alarm signal of the combustible gas detector. The cover body 3 is a trapezoidal structure provided with an inner cavity. The wider bottom surface of the trapezoidal structure faces upward and is provided with an opening connected to the inner cavity. A pipeline is provided on one side of the cover body 3 to connect to the gas source device 1. A return pipeline 39 is provided on the other side of the cover body 3. The free end of the return pipeline 39 is connected to the outside atmosphere or the gas collection box. The gas source device 1 stores high-pressure standard combustible gas, and the combustible gas is transported to the cover body 3 through the pipeline.

[0048] When in use, the staff delivers the cover body 3 to the combustible gas detector through the long rod mechanism 2 and covers the combustible gas detector, and then transports the combustible gas into the cover body 3 to detect the combustible gas detector. The cover body 3 prevents the combustible gas from diffusing, so that less combustible gas can be used to complete the detection, improve the detection efficiency, and prevent the combustible gas from diffusing to the dangerous area to prevent danger.

[0049] Example 2

[0050] See also Figure 1-4 , a combustible gas detector detection device, comprising a gas source device 1 and a long rod mechanism 2;

[0051] A transparent cover body 3 is provided at one end of the long rod mechanism 2. The cover body 3 is transparent in order to facilitate observation of the alarm signal of the combustible gas detector. The cover body 3 is a trapezoidal structure provided with an inner cavity. The wider bottom surface of the trapezoidal structure faces upward and is provided with an opening connected to the inner cavity. A pipeline is provided on one side of the cover body 3 to connect to the gas source device 1. A return pipeline 39 is provided on the other side of the cover body 3. The free end of the return pipeline 39 is connected to the outside atmosphere or the gas collection box. The gas source device 1 stores high-pressure standard combustible gas, and the combustible gas is transported to the cover body 3 through the pipeline.

[0052] When in use, the staff delivers the cover body 3 to the combustible gas detector through the long rod mechanism 2 and covers the combustible gas detector, and then transports the combustible gas into the cover body 3 to detect the combustible gas detector. The cover body 3 prevents the combustible gas from diffusing, so that less combustible gas can be used to complete the detection, improve the detection efficiency, and prevent the combustible gas from diffusing to the dangerous area to prevent danger.

[0053] The gas source device 1 includes a base plate 4 and a handle mechanism 13 arranged on one side of the base plate 4;

[0054] A compressed air storage cylinder 6 is arranged in the middle of the bottom plate 4, and a plurality of combustible gas cylinders 5 storing different combustible gases are arranged on the bottom plate 4 outside the compressed air storage cylinder 6. Each combustible gas cylinder 5 stores corresponding high-pressure standard combustible gases, such as methane gas cylinders, ethane gas cylinders, propane gas cylinders, etc. The upper ends of the compressed air storage cylinder 6 and the plurality of combustible gas cylinders 5 are provided with corresponding pipelines connected to the cover body 3.

[0055] A control valve mechanism 11 is arranged on the bottom plate 4 through a bracket. The control valve mechanism 11 includes a shell body 22 which is arranged hollow inside. A valve body is arranged in the shell body 22. An air outlet 27 and an air inlet corresponding to the compressed air storage cylinder 6 are arranged in the middle of the upper side and the middle of the lower side of the valve body respectively. A plurality of gas outlets 28 and gas inlets 33 corresponding to the flammable gas storage cylinder 5 are arranged in the area of ​​the upper side and the lower side of the valve body away from the middle. The compressed air storage cylinder 6 is connected to the air inlet through a pipeline 1 8, and a plurality of flammable gas storage cylinders 5 are connected to the corresponding gas inlets 33 through a pipeline 2 7. The air outlet 27 is connected to the main pipeline 10, and a plurality of gas outlets 28 are connected to branch pipelines 9. The free ends of the plurality of branch pipelines 9 are all connected to the main pipeline 10. The free end of the main pipeline 10 is connected to the cover body 3. The specific shell body 22 is provided with pipe holes corresponding to the air outlet 27, the air inlet, the gas outlet 28 and the gas inlet 33 to facilitate the connection of the pipelines.

[0056] Example 3

[0057] See also Figure 1-7 , a combustible gas detector detection device, comprising a gas source device 1 and a long rod mechanism 2;

[0058] A transparent cover body 3 is provided at one end of the long rod mechanism 2. The cover body 3 is transparent in order to facilitate observation of the alarm signal of the combustible gas detector. The cover body 3 is a trapezoidal structure provided with an inner cavity. The wider bottom surface of the trapezoidal structure faces upward and is provided with an opening connected to the inner cavity. A pipeline is provided on one side of the cover body 3 to connect to the gas source device 1. A return pipeline 39 is provided on the other side of the cover body 3. The free end of the return pipeline 39 is connected to the outside atmosphere or the gas collection box. The gas source device 1 stores high-pressure standard combustible gas, and the combustible gas is transported to the cover body 3 through the pipeline.

[0059] When in use, the staff delivers the cover body 3 to the combustible gas detector through the long rod mechanism 2 and covers the combustible gas detector, and then transports the combustible gas into the cover body 3 to detect the combustible gas detector. The cover body 3 prevents the combustible gas from diffusing, so that less combustible gas can be used to complete the detection, improve the detection efficiency, and prevent the combustible gas from diffusing to the dangerous area to prevent danger.

[0060] The gas source device 1 includes a base plate 4 and a handle mechanism 13 arranged on one side of the base plate 4;

[0061] A compressed air storage cylinder 6 is arranged in the middle of the bottom plate 4, and a plurality of combustible gas cylinders 5 storing different combustible gases are arranged on the bottom plate 4 outside the compressed air storage cylinder 6. Each combustible gas cylinder 5 stores corresponding high-pressure standard combustible gases, such as methane gas cylinders, ethane gas cylinders, propane gas cylinders, etc. The upper ends of the compressed air storage cylinder 6 and the plurality of combustible gas cylinders 5 are provided with corresponding pipelines connected to the cover body 3.

[0062] A control valve mechanism 11 is arranged on the bottom plate 4 through a bracket. The control valve mechanism 11 includes a shell body 22 which is arranged hollow inside. A valve body is arranged in the shell body 22. An air outlet 27 and an air inlet corresponding to the compressed air storage cylinder 6 are arranged in the middle of the upper side and the middle of the lower side of the valve body respectively. A plurality of gas outlets 28 and gas inlets 33 corresponding to the flammable gas storage cylinder 5 are arranged in the area of ​​the upper side and the lower side of the valve body away from the middle. The compressed air storage cylinder 6 is connected to the air inlet through a pipeline 1 8, and a plurality of flammable gas storage cylinders 5 are connected to the corresponding gas inlets 33 through a pipeline 2 7. The air outlet 27 is connected to the main pipeline 10, and a plurality of gas outlets 28 are connected to branch pipelines 9. The free ends of the plurality of branch pipelines 9 are all connected to the main pipeline 10. The free end of the main pipeline 10 is connected to the cover body 3. The specific shell body 22 is provided with pipe holes corresponding to the air outlet 27, the air inlet, the gas outlet 28 and the gas inlet 33 to facilitate the connection of the pipelines.

[0063] The valve body includes a circular shaft, an upper circular plate 24 is arranged at the upper end of the circular shaft, and the upper side surface of the upper circular plate 24 is arranged on the upper side surface inside the shell 22, and a lower circular plate 26 is arranged at the lower end of the circular shaft, and the lower side surface of the lower circular plate 26 is arranged on the lower side surface inside the shell 22. Specifically, the shell 22 is divided into an upper and lower part, and the upper and lower parts of the shell 22 are connected to form a whole by bolts. The upper and lower parts of the shell 22 are respectively connected to the upper circular plate 24 and the lower circular plate 26 by bolts. The shell 22 plays a role in supporting the valve body and sealing. A middle circular plate 30 that is slidably matched with the upper circular plate 24 and the lower circular plate 26 is rotatably arranged on the periphery of the circular shaft;

[0064] A plurality of through air outlets 28 are arranged along the circumference of the upper circular plate 24, an upper annular cavity 37 for allowing air circulation is arranged inside the upper circular plate 24, the upper annular cavity 37 is arranged around the circular axis, a plurality of upper extension cavities 36 are arranged on the outer side surface of the inner part of the upper annular cavity 37, the plurality of upper extension cavities 36 are evenly arranged along the upper annular cavity 37, a single upper extension cavity 36 is arranged between the adjacent two side air outlets 28, a plurality of upper circular holes 35 penetrating to the corresponding upper extension cavities 36 are arranged on the lower side surface of the upper circular plate 24, the plurality of upper circular holes 35 are distributed on the same circumference as the plurality of air outlets 28, and the single upper circular hole 35 is distributed between the adjacent two side air outlets 28, and a plurality of air outlets 27 penetrating to the annular cavity are arranged on the upper side surface of the upper circular plate 24;

[0065] The lower circular plate 26 is symmetrical in structure with the upper circular plate 24, that is, it is provided with a corresponding number of air inlets 33, a lower annular cavity, a number of lower extension cavities, a number of lower circular holes 34 and a number of air inlets;

[0066] A main pipe 10 is arranged around the air outlets 27, that is, the air outlets 27 are arranged inside the main pipe 10, and a pipe 8 is arranged around the air inlet, that is, the air inlet is arranged inside the pipe 8;

[0067] A through middle hole 31 is provided on the middle circular plate 30. The middle hole 31 has the same circumference as the air outlet 28 or the air inlet 33. When the middle circular plate 30 rotates, when the middle hole 31 is connected with the air outlet 28 and the air inlet 33, the standard combustible gas in the corresponding combustible gas storage cylinder 5 will flow into the main line 10 through the pipeline 2 7, the valve body and the branch pipeline 9, and then flow into the cover body 3. At this time, the air inlet and the air outlet 27 are closed by the middle circular plate 30. When the middle circular plate 30 rotates, the air inlet and the air outlet 27 are connected. At this time, the air outlet 28 and the air inlet 33 are closed, and the high-pressure air in the compressed air storage cylinder 6 will flow into the cover body 3 through the pipeline 1 8, the valve body and the main line 10.

[0068] A gear 25 is arranged on the periphery of the middle circular plate 30, and a rotating shaft 1 is arranged in the corresponding shell 22. A gear 2 23 meshing with the gear 25 is arranged on the periphery of the rotating shaft 1. A handle 2 12 is arranged on the upper end of the rotating shaft 1 after passing through the shell 22. By rotating the handle 2 12, the gear 2 23 is driven to rotate, and then the gear 1 25 is driven to rotate, and then the middle circular plate 30 is driven to rotate.

[0069] Example 4

[0070] See also Figure 1-8 , a combustible gas detector detection device, comprising a gas source device 1 and a long rod mechanism 2;

[0071] A transparent cover body 3 is provided at one end of the long rod mechanism 2. The cover body 3 is transparent in order to facilitate observation of the alarm signal of the combustible gas detector. The cover body 3 is a trapezoidal structure provided with an inner cavity. The wider bottom surface of the trapezoidal structure faces upward and is provided with an opening connected to the inner cavity. A pipeline is provided on one side of the cover body 3 to connect to the gas source device 1. A return pipeline 39 is provided on the other side of the cover body 3. The free end of the return pipeline 39 is connected to the outside atmosphere or the gas collection box. The gas source device 1 stores high-pressure standard combustible gas, and the combustible gas is transported to the cover body 3 through the pipeline.

[0072] When in use, the staff delivers the cover body 3 to the combustible gas detector through the long rod mechanism 2 and covers the combustible gas detector, and then transports the combustible gas into the cover body 3 to detect the combustible gas detector. The cover body 3 prevents the combustible gas from diffusing, so that less combustible gas can be used to complete the detection, improve the detection efficiency, and prevent the combustible gas from diffusing to the dangerous area to prevent danger.

[0073] The gas source device 1 includes a base plate 4 and a handle mechanism 13 arranged on one side of the base plate 4;

[0074] A compressed air storage cylinder 6 is arranged in the middle of the bottom plate 4, and a plurality of combustible gas cylinders 5 storing different combustible gases are arranged on the bottom plate 4 outside the compressed air storage cylinder 6. Each combustible gas cylinder 5 stores corresponding high-pressure standard combustible gases, such as methane gas cylinders, ethane gas cylinders, propane gas cylinders, etc. The upper ends of the compressed air storage cylinder 6 and the plurality of combustible gas cylinders 5 are provided with corresponding pipelines connected to the cover body 3.

[0075] A control valve mechanism 11 is arranged on the bottom plate 4 through a bracket. The control valve mechanism 11 includes a shell body 22 which is arranged hollow inside. A valve body is arranged in the shell body 22. An air outlet 27 and an air inlet corresponding to the compressed air storage cylinder 6 are arranged in the middle of the upper side and the middle of the lower side of the valve body respectively. A plurality of gas outlets 28 and gas inlets 33 corresponding to the flammable gas storage cylinder 5 are arranged in the area of ​​the upper side and the lower side of the valve body away from the middle. The compressed air storage cylinder 6 is connected to the air inlet through a pipeline 1 8, and a plurality of flammable gas storage cylinders 5 are connected to the corresponding gas inlets 33 through a pipeline 2 7. The air outlet 27 is connected to the main pipeline 10, and a plurality of gas outlets 28 are connected to branch pipelines 9. The free ends of the plurality of branch pipelines 9 are all connected to the main pipeline 10. The free end of the main pipeline 10 is connected to the cover body 3. The specific shell body 22 is provided with pipe holes corresponding to the air outlet 27, the air inlet, the gas outlet 28 and the gas inlet 33 to facilitate the connection of the pipelines.

[0076] The valve body includes a circular shaft, an upper circular plate 24 is arranged at the upper end of the circular shaft, and the upper side surface of the upper circular plate 24 is arranged on the upper side surface inside the shell 22, and a lower circular plate 26 is arranged at the lower end of the circular shaft, and the lower side surface of the lower circular plate 26 is arranged on the lower side surface inside the shell 22. Specifically, the shell 22 is divided into an upper and lower part, and the upper and lower parts of the shell 22 are connected to form a whole by bolts. The upper and lower parts of the shell 22 are respectively connected to the upper circular plate 24 and the lower circular plate 26 by bolts. The shell 22 plays a role in supporting the valve body and sealing. A middle circular plate 30 that is slidably matched with the upper circular plate 24 and the lower circular plate 26 is rotatably arranged on the periphery of the circular shaft;

[0077] A plurality of through air outlets 28 are arranged along the circumference of the upper circular plate 24, an upper annular cavity 37 for allowing air circulation is arranged inside the upper circular plate 24, the upper annular cavity 37 is arranged around the circular axis, a plurality of upper extension cavities 36 are arranged on the outer side surface of the inner part of the upper annular cavity 37, the plurality of upper extension cavities 36 are evenly arranged along the upper annular cavity 37, a single upper extension cavity 36 is arranged between the adjacent two side air outlets 28, a plurality of upper circular holes 35 penetrating to the corresponding upper extension cavities 36 are arranged on the lower side surface of the upper circular plate 24, the plurality of upper circular holes 35 are distributed on the same circumference as the plurality of air outlets 28, and the single upper circular hole 35 is distributed between the adjacent two side air outlets 28, and a plurality of air outlets 27 penetrating to the annular cavity are arranged on the upper side surface of the upper circular plate 24;

[0078] The lower circular plate 26 is symmetrical in structure with the upper circular plate 24, that is, it is provided with a corresponding number of air inlets 33, a lower annular cavity, a number of lower extension cavities, a number of lower circular holes 34 and a number of air inlets;

[0079] A main pipe 10 is arranged around the air outlets 27, that is, the air outlets 27 are arranged inside the main pipe 10, and a pipe 8 is arranged around the air inlet, that is, the air inlet is arranged inside the pipe 8;

[0080] A through middle hole 31 is provided on the middle circular plate 30. The middle hole 31 has the same circumference as the air outlet 28 or the air inlet 33. When the middle circular plate 30 rotates, when the middle hole 31 is connected with the air outlet 28 and the air inlet 33, the standard combustible gas in the corresponding combustible gas storage cylinder 5 will flow into the main line 10 through the pipeline 2 7, the valve body and the branch pipeline 9, and then flow into the cover body 3. At this time, the air inlet and the air outlet 27 are closed by the middle circular plate 30. When the middle circular plate 30 rotates, the air inlet and the air outlet 27 are connected. At this time, the air outlet 28 and the air inlet 33 are closed, and the high-pressure air in the compressed air storage cylinder 6 will flow into the cover body 3 through the pipeline 1 8, the valve body and the main line 10.

[0081] A gear 25 is arranged on the periphery of the middle circular plate 30, and a rotating shaft 1 is arranged in the corresponding shell 22. A gear 2 23 meshing with the gear 25 is arranged on the periphery of the rotating shaft 1. A handle 2 12 is arranged on the upper end of the rotating shaft 1 after passing through the shell 22. By rotating the handle 2 12, the gear 2 23 is driven to rotate, and then the gear 1 25 is driven to rotate, and then the middle circular plate 30 is driven to rotate.

[0082] The long rod mechanism 2 includes a round long rod 44, a T-shaped slide groove 42 is arranged on the side of the round long rod 44, the T-shaped slide groove 42 is close to the top of the round long rod 44 where the cover body 3 is arranged, a matching T-shaped slider 1 is arranged in the T-shaped slide groove 42, and a matching rod 40 is hinged on the upper side of the T-shaped slider 1, the free end of the rod 40 is hinged on one side of the cover body 3, and the other side of the corresponding cover body 3 is hinged on the top of the round long rod 44.

[0083] A slide groove 1 is provided on the end surface of the T-shaped slide groove 1 42 away from the cover body 3, and the slide groove 1 extends to the lower end near the round long rod 44. A rod 2 43 that slides with the slide groove 1 is provided on the corresponding side surface of the T-shaped slider 1. A slide groove 2 45 that penetrates the slide groove 1 is provided on the side surface near the lower end of the round long rod 44. A threaded rod 1 is provided on the upper side surface of the lower end of the rod 2 43 away from the T-shaped slider 1. The threaded rod 1 is screwed with the rod 2 43 and penetrates the rod 2 43. The upper end of the threaded rod 1 passes through the slide groove 2 45 A handle 46 is provided at the rear. When in use, the handle 46 is used to push the rod 43 upward, and the rod 43 pushes the rod 40 upward through the T-shaped slider, and then the rod 40 pushes the cover body 3 to rotate along the hinge point with the round long rod 44, so that the angle of the cover body 3 can be adjusted, which is convenient for matching with the combustible gas detector installed at a high place. After the position is adjusted, the handle 46 can be rotated so that the lower end of the threaded rod is pressed against the bottom surface of the slide groove 1, so as to fix the rod 43 and finally fix the cover body 3.

[0084] The handle mechanism 13 includes a pair of support rods obliquely arranged on one side of the bottom plate 4, and a cross bar is arranged between the support rods on both sides;

[0085] A rotating shaft 20 is arranged on the cross bar through a pair of bracket plates, a T-shaped slider 2 is arranged in the middle of the side of the rotating shaft 20, and a T-shaped slide groove 27 matched with the T-shaped slide groove 27 is arranged on the side of the round long rod 44 away from the cover body 3. The T-shaped slide groove 27 is close to the lower end of the round long rod 44 and passes through the lower end surface of the round long rod 44. The T-shaped slide groove 27 is slidably arranged in the T-shaped slide groove 27.

[0086] A slide groove three is provided on the inner side surface of one side bracket plate facing the T-shaped slider two, and a matching slide groove three is provided in the slide groove three, and a pawl 16 is provided on the side surface of the slide groove, and a ratchet 17 matching with the pawl 16 is provided on the corresponding outer periphery of the rotating shaft two 20, and a round rod is provided on the upper side surface of the slider, and a handle three 14 is provided after the upper end of the round rod slides out of the bracket plate, and the round rod and the bracket plate are slidably matched, and a spring 15 is provided on the outer periphery of the round rod between the slider and the inner upper end surface of the slide groove three, one end of the spring 15 is provided on the slider, and the other end of the spring 15 is provided on the upper end surface in the slide groove three, and the spring 15 can ensure the cooperation between the pawl 16 and the ratchet 17, and the handle three 14 can be pulled up to release the cooperation between the pawl 16 and the ratchet 17, and the long round rod 44 is rotated, thereby driving the rotating shaft two 20 to rotate, and the ratchet 17 and the pawl 16 are limited, so as to realize the adjustment of the angle of the long round rod 44, which is convenient for detection.

[0087] A splint 18 is slidably provided on the periphery of the rotating shaft 20. The splint 18 is arranged on a side away from the ratchet 17. A threaded rod 2 19 is rotatably provided on the side of the splint 18 away from the ratchet 17. A handle 4 21 is provided after the free end of the threaded rod 19 passes through the bracket plate on the corresponding side. The threaded rod 2 19 is threadably matched with the corresponding bracket plate. The position of the splint 18 can be adjusted by rotating the handle 4 21, so that the splint 18 can fix the round long rod 44.

[0088] Working principle: first, the long rod mechanism 2 is installed on the gas source device 1 through the cooperation of the T-shaped slider 2 and the T-shaped slide groove 2 47, and then the position of the cover body 3 is adjusted by turning the long rod mechanism 2 upward and the angle of the cover body 3 is adjusted through the handle 1 46, so that the cover body 3 covers the periphery of the combustible gas detector to be tested, and then the handle 4 21 is turned to make the clamping plate 18 fix the round long rod 44. In addition, according to specific needs, in the process of adjusting the height of the long rod mechanism 2, the pawl 16 can be released from the ratchet 17 by pulling up the handle 3 14, so as to adjust the long rod mechanism 2 downward;

[0089] When the cover body 3 is covered on the combustible gas detector to be tested, the handle 2 12 is turned to rotate the middle circular plate 30, so that the middle hole 31 is connected with one group of the gas outlet 28 and the gas inlet 33, and then the corresponding standard combustible gas is filled into the cover body 3 to detect the combustible gas detector. After the detection is completed, the handle 2 12 is turned to connect the air inlet and the air outlet 27. At this time, all the gas outlets 28 and the gas inlet 33 are closed, and the high-pressure air in the compressed air storage cylinder 6 will pass through the pipeline 1 8, the valve body and The main pipeline 10 flows into the cover body 3, and compresses the combustible gas in the cover body 3 into the return pipeline 39, and discharges the combustible gas into the outside atmosphere or into the gas collection box through the return pipeline 39 for subsequent treatment. At the same time, the purity of the cover body can be ensured, that is, the previous standard combustible gas is excluded to avoid affecting the subsequent another combustible gas, thereby affecting the accuracy of the detection. Then, the handle 12 is turned to make another set of gas outlets 28 and the gas inlet 33 connected, and another standard combustible gas is used to detect the combustible gas detector;

[0090] The above embodiment only exemplifies the detection situation of a single combustible gas detector that can detect multiple combustible gases. Obviously, the present device can also detect two combustible gas detectors at different positions according to the above similar method.

[0091] Technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be elaborated here. Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A combustible gas detector detection device, characterized in that: It comprises an air source device (1) and a long rod mechanism (2); A cover body (3) is provided at one end of the long rod mechanism (2); a pipeline connected to the gas source device (1) is provided on one side of the cover body (3); and a return pipeline (39) is provided on the other side of the cover body (3); The cover body (3) is a transparent trapezoidal structure provided with an inner cavity, the wider bottom surface of the trapezoidal structure faces upward and is provided with an opening connected to the inner cavity; The air source device (1) comprises a base plate (4) and a handle mechanism (13) arranged on one side of the base plate (4); A compressed air storage cylinder (6) is arranged in the middle of the bottom plate (4), and a plurality of flammable gas storage cylinders (5) storing different flammable gases are arranged on the bottom plate (4) outside the compressed air storage cylinder (6). The upper ends of the compressed air storage cylinder (6) and the plurality of flammable gas storage cylinders (5) are both provided with corresponding pipelines connected to the cover body (3).

2. The combustible gas detector detection equipment according to claim 1, characterized in that: The long rod mechanism (2) comprises a round long rod (44), a T-shaped slide groove (42) is arranged on the side of the round long rod (44), the T-shaped slide groove (42) is close to the top of the round long rod (44) where the cover body (3) is arranged, a matching T-shaped slider (42) is arranged in the T-shaped slide groove (42), a matching rod (40) is hinged on the upper side of the T-shaped slider, the free end of the rod (40) is hinged on one side of the cover body (3), and the other side of the cover body (3) is hinged on the top of the round long rod (44).

3. The combustible gas detector detection equipment according to claim 2, characterized in that: A slide groove 1 is provided on the end surface of the T-shaped slide groove 1 (42) away from the cover body (3), and the slide groove 1 extends to the lower end close to the round long rod (44). A rod 2 (43) slidably matched with the slide groove 1 is provided on the corresponding side surface of the T-shaped slider 1. A slide groove 2 (45) penetrating into the slide groove 1 is provided on the side surface close to the lower end of the round long rod (44). A threaded rod 1 is provided on the upper side surface of the lower end of the rod 2 (43) away from the T-shaped slider 1. The threaded rod 1 is screwed with the rod 2 (43) and penetrates the rod 2 (43). A handle 1 (46) is provided on the upper end of the threaded rod 1 after passing through the slide groove 2 (45).

4. The combustible gas detector detection equipment according to claim 3, characterized in that: The handle mechanism (13) comprises a pair of support rods obliquely arranged on one side of the bottom plate (4), and a cross bar is arranged between the support rods on both sides; A second rotating shaft (20) is arranged on the cross bar through a pair of bracket plates, and a second T-shaped slider is arranged in the middle of the side of the second rotating shaft (20). A second T-shaped slide groove (47) cooperating with the second T-shaped slider is arranged on the side of the long round rod (44) away from the cover body (3), and the second T-shaped slide groove (47) is close to the lower end of the long round rod (44) and passes through the lower end surface of the long round rod (44), and the second T-shaped slider is slidably arranged in the second T-shaped slide groove (47).

5. The combustible gas detector detection equipment according to claim 4, characterized in that: A slide groove three is provided on the inner side surface of the bracket plate on one side facing the T-shaped slider two, a matching slider is provided in the slide groove three, a pawl (16) is provided on the side surface of the slider, and a ratchet (17) matching with the pawl (16) is provided on the outer periphery of the corresponding rotating shaft two (20), a round rod is provided on the upper side surface of the slider, and a handle three (14) is provided on the upper end of the round rod after the round rod slides out of the bracket plate, a spring (15) is provided on the outer periphery of the round rod between the slider and the inner upper end surface of the slide groove three, one end of the spring (15) is provided on the slider, and the other end of the spring (15) is provided on the upper end surface in the slide groove three.

6. The combustible gas detector detection equipment according to claim 1, characterized in that: A control valve mechanism (11) is arranged on the bottom plate (4) via a bracket, the control valve mechanism (11) comprising a shell (22) whose interior is arranged to be hollow, a valve body being arranged in the shell (22), an air outlet (27) and an air inlet corresponding to the compressed air storage cylinder (6) being arranged in the middle of the upper side surface and the middle of the lower side surface of the valve body respectively, and a plurality of air outlets (28) and air inlets corresponding to the flammable gas storage cylinder (5) being arranged in the areas away from the middle of the upper side surface and the lower side surface of the valve body (33), the compressed air storage cylinder (6) is connected to the air inlet through pipeline 1 (8), a plurality of the flammable gas storage cylinders (5) are connected to the corresponding air inlet (33) through pipeline 2 (7), the air outlet (27) is connected to the main pipeline (10), a plurality of the air outlets (28) are connected to branch pipelines (9), the free ends of the plurality of branch pipelines (9) are connected to the main pipeline (10), and the free ends of the main pipeline (10) are connected to the cover body (3).

7. The combustible gas detector detection equipment according to claim 6, characterized in that: The valve body comprises a circular shaft, an upper circular plate (24) is arranged at the upper end of the circular shaft, a lower circular plate (26) is arranged at the lower end of the circular shaft, and a middle circular plate (30) is rotatably arranged on the periphery of the circular shaft and is slidably matched with the upper circular plate (24) and the lower circular plate (26); A plurality of through-going air outlets (28) are arranged along the circumference of the upper circular plate (24); an upper annular cavity (37) for allowing air circulation is arranged inside the upper circular plate (24); the upper annular cavity (37) is arranged around the circular axis; a plurality of upper extension cavities (36) are arranged on the inner and outer sides of the upper annular cavity (37) in communication; the plurality of upper extension cavities (36) are evenly arranged along the upper annular cavity (37); a single upper extension cavity (36) is arranged between the air outlets (28) on two adjacent sides; a plurality of upper circular holes (35) penetrating to the corresponding upper extension cavities (36) are arranged on the lower side surface of the upper circular plate (24); the plurality of upper circular holes (35) and the plurality of air outlets (28) are distributed on the same circumference and the single upper circular hole (35) is distributed between the air outlets (28) on two adjacent sides; and a plurality of air outlets (27) penetrating to the annular cavity are arranged on the upper side surface of the upper circular plate (24); The lower circular plate (26) is symmetrical in structure with the upper circular plate (24), that is, it is provided with a corresponding plurality of air inlets (33), a lower annular cavity, a plurality of lower extension cavities, a plurality of lower circular holes (34) and a plurality of air inlets; The main pipe (10) is disposed on the periphery of a plurality of the air outlets (27), and the pipe one (8) is disposed on the periphery of a plurality of the air inlets; The middle circular plate (30) is provided with a through middle hole (31), and the middle hole (31) is cocircular with the air outlet (28) or the air inlet (33).

8. The combustible gas detector detection equipment according to claim 7, characterized in that: A gear 1 (25) is disposed on the periphery of the middle circular plate (30), and a rotating shaft 1 is correspondingly disposed in the housing (22). A gear 2 (23) meshing with the gear 1 (25) is disposed on the periphery of the rotating shaft 1, and a handle 2 (12) is disposed at the upper end of the rotating shaft 1 after passing through the housing (22).

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