Detection device of combustible gas detector

Abstract

The utility model discloses a detection device of a combustible gas detector, which comprises a gas cylinder, a detection adapter and a second gas pipe, the side surface of the top of the gas cylinder is connected with a first gas pipe, the first gas pipe is provided with a stop valve, the first gas pipe is connected with the detection adapter through the second gas pipe, and the detection adapter is provided with a deflation pipe. A gas hood assembly is installed on the outer side of the gas discharging pipe, the detection adapter is connected with the combustible gas detector through the gas hood assembly, the detection adapter is provided with a gas discharging control element, and the gas discharging control element is used for controlling opening and closing of the gas discharging pipe. The detection adapter can be adaptively connected to the to-be-detected combustible gas detector, the detection adapter is provided with a gas discharge control element, inching type release of combustible gas can be realized through the gas discharge control element, and the to-be-detected combustible gas detector completes detection operation by sensing released rarefied combustible gas. According to the utility model, the requirements of convenient operation and safety detection can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the detection instrument technical field of fire safety equipment, more particularly to a combustible gas detector's detection device. BACKGROUND

[0002] A combustible gas detector is a point type gas detection device installed in an explosive hazardous environment, which can detect the combustible gas concentration on site and convert it into an electrical signal to transmit to the monitoring device located in the safe area to achieve the purpose of monitoring the combustible gas concentration on site. As a kind of fire safety control equipment, combustible gas detector needs to be detected regularly, mainly to detect the sensitivity and reaction time of the detector to ensure its reliability.

[0003] The individual detection operation of the combustible gas detector is very time-consuming and laborious, and it is an urgent need of the detection unit to design a detection device that is convenient and safe to operate. UTILITY MODEL CONTENT

[0004] The utility model discloses a combustible gas detector's detection device, which can meet the needs of convenient operation and safe detection.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A combustible gas detector's detection device, comprising a gas cylinder, a detection adapter and a second gas pipe, the top side of the gas cylinder is connected with a first gas pipe, a stop valve is installed on the first gas pipe, the first gas pipe and the detection adapter are connected through the second gas pipe, a gas release pipe is arranged on the detection adapter, a gas cover assembly is installed outside the gas release pipe, the detection adapter is connected with the combustible gas detector through the gas cover assembly, the detection adapter is installed with a gas release control element, and the gas release control element is used to control the opening and closing of the gas release pipe.

[0007] Further, the first gas pipe is made of metal pipe, a pressure gauge is installed on the first gas pipe, and the pressure gauge is arranged at the front end of the stop valve.

[0008] Further, the detection adapter comprises a body, the air exhaust pipe is vertically connected to the top of the body, an air inlet pipe is vertically connected to the bottom of the body, the air exhaust pipe and the air inlet pipe are arranged in a corresponding up-down mode, a gas passage is formed in the body and penetrates the air exhaust pipe and the air inlet pipe, a piston passage is formed in the body and crosses the gas passage, the air exhaust control element is installed in the piston passage and is used for controlling the communication relationship between the piston passage and the gas passage at the intersection.

[0009] Further, the air exhaust control element comprises a piston, a control rod and a spring, the piston is matchedly installed in the piston passage and can move along the length direction of the piston passage, the control rod is inserted into the body, one end of the control rod extends into the piston passage and is fixedly connected with the piston, the other end of the control rod extends to the outside of the body and is connected with a finger pressing disc, the spring is installed in the piston passage and is sleeved on the outside of the control rod, one end of the spring is connected with the piston and the other end of the spring is connected with the end of the piston passage, and a communication hole is formed in the piston.

[0010] Further, one side of the piston passage is open, a cover is sealingly installed at the open end of the piston passage, a limiting protrusion is connected to the cover and is inserted into the piston passage, the limiting protrusion blocks the moving route of the piston, and the piston can make the communication hole communicate with the gas passage when the piston abuts against the limiting protrusion.

[0011] Further, a first quick connector is installed at the outer end of the first air pipe, a second quick connector is installed on the air inlet pipe of the detection adapter, the second air pipe is a hose, and the two ends of the second air pipe are respectively connected with the first quick connector and the second quick connector.

[0012] Further, the gas cover assembly comprises a first gas cover and a second gas cover, the lower end of the first gas cover is fixedly connected to the outer wall of the air exhaust pipe of the detection adapter, the outer wall of the first gas cover is provided with external threads, the second gas cover is threadedly connected to the first gas cover, and a sealing ring is installed on the inner wall of the top of the second gas cover.

[0013] Further, the detection adapter further comprises a finger pressing controller, the finger pressing controller adopts an L-shaped seat body, the finger pressing controller is screw-fixed to the outer wall of the body, and the finger pressing controller comprises a horizontal side, which can be vertically embedded between the finger pressing disc and the outer wall of the body.

[0014] The detection adapter has the following beneficial effects:

[0015] 1. The gas cylinder of the utility model is used for containing combustible gas for detection, the detection adapter can be connected to the combustible gas detector to be detected, the detection adapter is provided with a gas release control element, the combustible gas can be released in a jog mode through the gas release control element, and the combustible gas detector to be detected can complete the detection operation by sensing the released thin combustible gas.

[0016] 2. The utility model discloses simple structure, and it is very convenient to operate, only need to operate the gas release control element during detection, the utility model discloses a jog mode gas release mode, and the gas release amount is controllable, under the premise of meeting the detection demand, does not cause the security risk, has safe and reliable advantage. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the connecting pipe schematic drawing of the detection device of a combustible gas detector in the embodiment;

[0018] Figure 2 It is the internal structure schematic drawing of the detection adapter in the embodiment;

[0019] Figure 3 It is the front view appearance drawing of the combustible gas detector.

[0020] The drawing comprises a gas cylinder 1, a first gas pipe 11, a first quick connector 111, a stop valve 12, a pressure gauge 13, a detection adapter 2, a gas release pipe 21, a gas cover assembly 22, a first gas cover 221, a second gas cover 222, a sealing ring 223, a body 23, a gas passage 231, a piston passage 232, a cover 233, a limiting protrusion 234, an air inlet pipe 24, a second quick connector 241, a second gas pipe 3, a gas release control element 4, a piston 41, a communication hole 411, a control rod 42, a finger pressing disc 421, a spring 43, a finger pressing controller 44 and a horizontal edge 441. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0022] For example, Figure 1 And Figure 2The detection device of the combustible gas detector shown comprises a gas cylinder 1, a detection adapter 2 and a second gas pipe 3, the gas cylinder 1 contains combustible gas (such as methane, acetylene, etc., which is selected according to the combustible gas type that is likely to occur according to the use occasion) for detection and use, the top side of the gas cylinder 1 is connected with a first gas pipe 11, the first gas pipe 11 is a metal pipe, which is directly connected to the gas cylinder 1 and used for outputting the gas in the gas cylinder 1 for use, a stop valve 12 is installed on the first gas pipe 11, the stop valve 12 is used for controlling the opening and closing of the first gas pipe 11, during the detection operation, the stop valve 12 is opened, and the stop valve 12 needs to be closed at other times to prevent the combustible gas in the gas cylinder 1 from escaping to cause a safety hazard, such as Figure 3 The combustible gas detector shown comprises a cylindrical detection head at the bottom, which is used for sensing the concentration of combustible gas in the external environment, the detection adapter 2 of the utility model is used for butting the detection head of the combustible gas detector, and the combustible gas output by the gas cylinder 1 is guided to the detection head for sensing, so that the performance of the combustible gas detector can be detected, the first gas pipe 11 and the detection adapter 2 are connected through the second gas pipe 3, the second gas pipe 3 plays the role of extending the detection adapter 2, so that the detection adapter 2 can butt the detection head, the second gas pipe 3 is a hose, and the second gas pipe 3 can guide the combustible gas released from the gas cylinder 1 to the detection adapter 2, the detection adapter 2 is provided with a gas discharge pipe 21, a gas cover assembly 22 is installed outside the gas discharge pipe 21, the detection adapter 2 is connected with the combustible gas detector through the gas cover assembly 22, the gas cover assembly 22 is covered outside the detection head of the combustible gas detector to form a closed gas discharge environment, the detection adapter 2 is provided with a gas discharge control element 4, which is used for controlling the opening and closing of the gas discharge pipe 21, during the detection operation, the worker holds the detection adapter 2 to butt the combustible gas detector, therefore, the detection adapter 2 is most convenient and suitable for operation when the gas discharge control element 4 is installed, the gas discharge pipe 21 can form the release of combustible gas in the gas cover assembly 22 after being opened, the released gas is completely directed to the detection head of the combustible gas detector, which is convenient for sensing and analysis, because the detection of the combustible gas detector mainly focuses on sensitivity and reaction time, therefore, the release amount of combustible gas should not be too large, and the gas discharge control element 4 of the utility model adopts a point control design.

[0023] As Figure 2As shown, the detection adapter 2 comprises a body 23, the gas discharge pipe 21 is vertically connected to the top of the body 23, and the gas inlet pipe 24 is vertically connected to the bottom of the body 23. The gas discharge pipe 21 and the gas inlet pipe 24 are arranged in a corresponding manner. The gas discharge pipe 21 is used for the final release of combustible gas, and the gas inlet pipe 24 is used for connecting the second gas pipe 3. The utility model discloses a second quick connector 241 installed on the gas inlet pipe 24 of the detection adapter 2, a first quick connector 111 installed on the outer end of the first gas pipe 11, and the two ends of the second gas pipe 3 connected with the first quick connector 111 and the second quick connector 241 respectively. The first quick connector 111 and the second quick connector 241 play the role of quick connection of the second gas pipe 3. The quick connector is a kind of pneumatic element that can be purchased in the market, and will not be described here. In the utility model, the gas inlet pipe 24 introduces combustible gas into the detection adapter 2, and the gas discharge pipe 21 is used for releasing combustible gas. A gas passage 231 is formed in the body 23 of the utility model. The gas passage 231 is vertically formed. The gas passage 231 penetrates the gas discharge pipe 21 and the gas inlet pipe 24, which is a combustible gas conveying passage. A piston passage 232 is formed in the body 23. The piston passage 232 and the gas passage 231 are arranged in a cross shape. The gas discharge control element 4 is installed in the piston passage 232. The gas discharge control element 4 is used to control the communication relationship between the piston passage 232 and the gas passage 231 at the intersection. In the case that the intersection of the piston passage 232 and the gas passage 231 is cut off, the gas passage 231 will be closed. In this way, the position of the gas discharge pipe 21 cannot realize the release of combustible gas. Through the operation of the gas discharge control element 4, the intersection of the piston passage 232 and the gas passage 231 can be opened. At this time, the gas passage 231 will be opened to achieve the purpose of releasing combustible gas. In the utility model, the gas discharge control element 4 comprises a piston 41, a control rod 42 and a spring 43. The piston 41 is matchedly installed in the piston passage 232. The piston 41 can move along the length direction of the piston passage 232. The movement of the piston 41 can act on the intersection of the piston passage 232 and the gas passage 231, so as to achieve the effect of opening and closing switching. The control rod 42 is inserted into the body 23. One end of the control rod 42 extends into the piston passage 232 and is fixedly connected with the piston 41. The other end of the control rod 42 extends to the outside of the body 23 and is connected with a finger pressing disc 421. The finger pressing disc 421 is used for the pressing of fingers when workers operate. The linkage effect of the control rod 42 and the piston 41 can be formed by pressing the finger pressing disc 421. The spring 43 is installed in the piston passage 232. The spring 43 is sleeved outside the control rod 42. One end of the spring 43 is connected with the piston 41, and the other end is connected with the end of the piston passage 232. The spring 43 plays the role of returning the piston 41 to the initial position. When only the spring 43 is subjected to the force, the piston 41 is in the initial position. The plug body of the piston 41 is located at the intersection of the piston passage 232 and the gas passage 231. The plug body of the piston 41 can cut off the gas passage 231. A communication hole 411 is formed in the piston 41. The communication hole 411 is vertically formed,With the movement of the piston 41, the communication hole 411 can coincide with the gas passage 231, at this time, the effect of opening the gas passage 231 can be formed, the movement of the piston 41 needs to be realized by the force control rod 42, the worker exerts force on the finger pressing disc 421 to push the control rod 42, so that the piston 41 moves, at this time, the spring 43 will be gradually stretched, in order to ensure that the communication hole 411 can coincide with the gas passage 231 accurately, the utility model designs the piston passage 232 as single side opening, the open end of the piston passage 232 is closedly installed with the cover 233, the cover 233 is connected with the limiting protrusion 234, the limiting protrusion 234 is inserted into the piston passage 232, the limiting protrusion 234 blocks the moving route of the piston 41, the limiting protrusion 234 determines the maximum stroke position of the piston 41 moving to the cover 233 side, in the case that the piston 41 abuts against the limiting protrusion 234, the communication hole 411 can accurately connect the gas passage 231, that is to say, as long as the worker exerts force and presses to the control rod 42 cannot continue to advance each time, the connection of the gas passage 231 can be ensured, the combustible gas can be released from the gas release pipe 21, due to the existence of the spring 43 elasticity, only when the worker exerts force and presses, the gas passage 231 can be connected, after the disappearance of the force, under the action of the spring 43 elasticity, the piston 41 will reset immediately, the gas passage 231 will be cut off immediately, therefore, the connection mode of the gas passage 231 is intermittent, the combustible gas release amount is determined according to the pressing holding time and the effective pressing (pressing to the bottom is effective pressing) frequency of the worker, the worker is easy to control the release amount of the combustible gas (not need to control the amount accurately, but want to ensure that the release amount is not large), the cover 233 design of the utility model is also convenient for the installation and connection of the piston 41, the control rod 42, the spring 43 and other components, although the gas cylinder 1 of the utility model can directly release the combustible gas through the stop valve 12, but this release mode is relatively rough, after the stop valve 12 is opened, the gas will be released all the time, the problem of excessive gas release is prone to occur, it is not as convenient and safe as the intermittent gas release control element 4 operation, and when detecting, the worker needs to hold the detection adapter 2, the detection adapter 2 is away from the gas cylinder 1, the worker uses the hand to operate the stop valve 12, which is also relatively inconvenient, but the gas release control element 4 is directly designed on the detection adapter 2, which is very convenient to operate, but before the detection operation, the stop valve 12 on the gas cylinder 1 needs to be opened, so as to ensure that the combustible gas enters the detection adapter 2.

[0024] As Figure 1 Indicated, the first gas pipe 11 is provided with the pressure gauge 13, the pressure gauge 13 is arranged at the front end of the stop valve 12, that is, the pressure gauge 13 is arranged between the stop valve 12 and the bottle head of the gas cylinder 1, the pressure gauge 13 can reflect the gas pressure in the gas cylinder 1, which is convenient for the worker to observe and select, the side wall of the gas cylinder 1 is connected with the inclined handle, the worker can carry by hand.

[0025] AsFigure 1 and Figure 2 As shown, the gas cover assembly 22 includes a first gas cover 221 and a second gas cover 222. The first gas cover 221 has a fixed diameter and its lower end is fixedly connected to the outer wall of the vent pipe 21 of the detection adapter 2. The second gas cover 222 needs to be adapted to the diameter of the probe head of the combustible gas detector. Therefore, the outer wall of the first gas cover 221 is provided with external threads, and the second gas cover 222 is threadedly connected to the first gas cover 221. The second gas cover 222 is detachable and can be selected according to different combustible gas detector models. The large inner hole at the top of the second gas cover 222 is adapted to the diameter of the probe head of the combustible gas detector. The second gas cover 222 is fitted and connected to the outside of the probe head. A sealing ring 223 is installed on the inner wall at the top of the second gas cover 222. The sealing ring 223 has a sealing effect at the connection. To prevent the detection adapter 2 from falling off, the detection adapter 2 needs to be held and supported during detection.

[0026] like Figure 2 As shown, when the venting control element 4 is in a non-pressed state, the gas channel 231 in the detection adapter 2 is in a cut-off state. The detection adapter 2 needs to maintain this cut-off state daily for safe use. To prevent accidental pressing, the detection adapter 2 is also designed with an acupressure controller 44. The acupressure controller 44 adopts an L-shaped base and is bolted to the outer wall of the device body 23. The acupressure controller 44 includes a horizontal edge 441. After the mounting bolt is loosened, the acupressure controller 44 can rotate. The horizontal edge 441 of the acupressure controller 44 can hang down and embed into the position between the acupressure plate 421 and the outer wall of the device body 23. The horizontal edge 441 blocks the pressing movement direction of the acupressure plate 421, making it impossible to press the acupressure plate 421. Thus, the detection adapter 2 maintains the cut-off state of the gas channel 231 daily. When the venting control element 4 needs to be used, the acupressure controller 44 can be rotated so that the horizontal edge 441 moves away from the acupressure plate 421.

[0027] The operating steps of this utility model are as follows: First, open the shut-off valve 12 on the gas cylinder 1; then, hold the detection adapter 2 to connect to the probe of the combustible gas detector; next, release the lock of the finger pressure controller 44 on the gas release control element 4; then, press the finger pressure plate 421 to control the release of combustible gas; observe the changes in the display of the combustible gas detector (e.g., ...). Figure 3As shown, the combustible gas detector has a display screen, which can display the change of combustible gas concentration, generally, the release control element 4 is pressed to open 3-4 times, after the first time of pressing, the first reading change reaction time of the combustible gas detector display screen is observed, so as to judge whether the combustible gas detector is rapid, when the subsequent pressing is multiple times, the release amount of combustible gas can be gradually increased, the sensitivity of the combustible gas detector is judged according to the reading change reaction time of the combustible gas detector display screen, after the detection is finished, the shut-off valve 12 on the gas cylinder 1 is closed, then the release control element 4 is locked by operating the finger controller 44, so as to prevent the situation of accidental pressing, the gas cylinder 1 and the detection adapter 2 are carried to the next detection station.

[0028] The utility model discloses simple structure, convenient operation, detect gas adopts the release mode of point -by -point, and the release amount of gas is controllable, will not cause the security risk under the premise of satisfying the detection demand, has safe and reliable advantage, the utility model discloses be suitable for promotion and application.

[0029] The above is only the preferred embodiment of the utility model, the protection scope of the utility model is not only limited to the above -mentioned embodiment, all technical schemes under the idea of the utility model of the utility model belong to the protection scope of the utility model. It should be noted that for ordinary skilled person in the art, without departing from the principle of the utility model, some improvements and decorations are also considered as the protection scope of the utility model.

Claims

1. A detection device for a combustible gas detector, characterized in that, The device includes a gas cylinder (1), a detection adapter (2), and a second gas pipe (3). The top side of the gas cylinder (1) is connected to a first gas pipe (11), and a shut-off valve (12) is installed on the first gas pipe (11). The first gas pipe (11) and the detection adapter (2) are connected through the second gas pipe (3). The detection adapter (2) is provided with a vent pipe (21), and a gas cover assembly (22) is installed on the outside of the vent pipe (21). The detection adapter (2) is connected to a combustible gas detector through the gas cover assembly (22). The detection adapter (2) is equipped with a vent control element (4), which is used to control the opening and closing of the vent pipe (21).

2. The detection device for a combustible gas detector according to claim 1, characterized in that, The first air pipe (11) is made of metal and a pressure gauge (13) is installed on the first air pipe (11). The pressure gauge (13) is located at the front end of the shut-off valve (12).

3. The detection device for a combustible gas detector according to claim 1, characterized in that, The detection adapter (2) includes a body (23), a vent pipe (21) is vertically connected to the top of the body (23), and an inlet pipe (24) is vertically connected to the bottom of the body (23). The vent pipe (21) and the inlet pipe (24) are arranged vertically and vertically. A gas channel (231) is opened inside the body (23), and the gas channel (231) passes through the vent pipe (21) and the inlet pipe (24). A piston channel (232) is opened inside the body (23), and the piston channel (232) and the gas channel (231) are arranged in a cross shape. The vent control element (4) is installed in the piston channel (232), and the vent control element (4) is used to control the connection relationship between the piston channel (232) and the gas channel (231) at the intersection.

4. The detection device for a combustible gas detector according to claim 3, characterized in that, The venting control element (4) includes a piston (41), a control rod (42), and a spring (43). The piston (41) is fitted into the piston channel (232) and can move along the length of the piston channel (232). The control rod (42) is inserted into the body (23). One end of the control rod (42) extends into the piston channel (232) and is fixedly connected to the piston (41). The other end of the control rod (42) extends to the outside of the body (23) and is connected to a pressure plate (421). The spring (43) is installed in the piston channel (232) and is fitted onto the outside of the control rod (42). One end of the spring (43) is connected to the piston (41), and the other end is connected to the end of the piston channel (232). A connecting hole (411) is provided on the piston (41).

5. The detection device for a combustible gas detector according to claim 4, characterized in that, The piston channel (232) is open on one side, and a cover (233) is installed at the open end of the piston channel (232). A limiting protrusion (234) is connected to the cover (233). The limiting protrusion (234) is inserted into the piston channel (232). The limiting protrusion (234) blocks the movement path of the piston (41). When the piston (41) abuts against the limiting protrusion (234), the connecting hole (411) can connect to the gas channel (231).

6. The detection device for a combustible gas detector according to claim 3, characterized in that, A first quick connector (111) is installed at the outer end of the first air tube (11), and a second quick connector (241) is installed on the air inlet pipe (24) of the detection adapter (2). The second air tube (3) is made of a flexible tube, and the two ends of the second air tube (3) are respectively connected to the first quick connector (111) and the second quick connector (241).

7. The detection device for a combustible gas detector according to claim 1, characterized in that, The air hood assembly (22) includes a first air hood (221) and a second air hood (222). The lower end of the first air hood (221) is fixedly connected to the outer wall of the vent pipe (21) of the detection adapter (2). The outer wall of the first air hood (221) is provided with an external thread. The second air hood (222) is threadedly connected to the first air hood (221). A sealing ring (223) is installed on the top inner wall of the second air hood (222).

8. The detection device for a combustible gas detector according to claim 4, characterized in that, The detection adapter (2) also includes acupressure controller (44), which adopts an L-shaped base and is bolted to the outer wall of the device body (23). The acupressure controller (44) includes a horizontal edge (441) which can be inserted into the position between the acupressure plate (421) and the outer wall of the device body (23).

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