Gas concentration detection device for chemical production safety evaluation

Abstract

The utility model provides a gas concentration detection device for chemical production safety evaluation, and belongs to the technical field of gas concentration detection. Comprising a bottom plate, a square box and an oil tank are fixed to the bottom plate, hydraulic oil is stored in the oil tank, a positioning cylinder is fixed to the square box, a positioning rod is slidably connected into the positioning cylinder, a detector is fixed to the positioning rod, a square block is fixed to the bottom of the positioning rod, and a guide wheel is rotatably connected to the side face of the square block; the inner wall of the guide groove is movably connected with the surface of the guide wheel. Through the arrangement of the flexible film pressure sensor, the oil pump, the piston and the round rod, after the detector rises, the guide wheel extrudes the flexible film pressure sensor, then the oil pump is started to enable hydraulic oil to extrude the piston, and the piston drives the round rod to extend to increase the supporting area for the detector; and after the detector is lifted, the detector can still be stably supported, so that the supporting stability of the detector is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas concentration detection, in particular to a gas concentration detection device for chemical production safety evaluation. Background Art

[0002] In the safety assessment of chemical production, the concentration of gases generated in chemical production activities is often tested. During the test, the gas concentration and type are tested by a gas concentration detector, and the safety of chemical production is evaluated based on the detected values.

[0003] A search revealed a Chinese patent application with authorization publication number CN214585257U, which discloses a gas concentration detection device for chemical production safety assessment. This device, applied in the field of gas concentration detection technology, includes a detector for detecting gas concentration and a movable base for mounting the detector. The movable base is equipped with a lifting mechanism for raising and lowering the detector. The movable base and lifting mechanism allow for free movement of the detector, expanding its detection range and facilitating multi-directional gas detection, thereby improving the accuracy of the detection data.

[0004] The above patent uses a movable seat and a lifting mechanism to realize the movement of the detector. However, after the detector is raised, the center of gravity of the entire equipment will gradually increase. During the movement of the raised detector, it is difficult to achieve stable support for the detector through the smaller movable seat, thereby affecting the support stability of the detector. Therefore, the present application provides a gas concentration detection device for chemical production safety evaluation to meet the needs. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a gas concentration detection device for chemical production safety evaluation to solve the technical problem of low support stability of the detector.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] The cam is connected with the oil pump of oil pumping station, and the cam is connected with the oil pump of oil pumping station by the push-pull mechanism, and the cam is connected with the oil pump of oil pumping station by the push-pull mechanism.

[0008] Preferably, a connecting seat is fixed to the side of the block, and the guide wheel is rotatably connected in the connecting seat.

[0009] Preferably, the number of the guide wheels is four, and the four guide wheels are distributed in a circular array with the axis passing through the block as the array center.

[0010] Preferably, the central axis of the round rod coincides with the central axis of the piston.

[0011] Preferably, a guide block is fixed to the bottom of the inner wall of the cavity.

[0012] Preferably, the top of the guide block is an upward curved surface.

[0013] Preferably, a triangular block is fixed on the top of the cross rod, and the triangular block is fixed on the side of the bottom plate.

[0014] Preferably, the number of the universal wheels is four, and the four universal wheels are distributed in a circular array with the axis passing through the cross rod as the array center.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] In the above scheme, through the arrangement of the flexible film pressure sensor, oil pump, piston and round rod, after the detector is raised, the guide wheel squeezes the flexible film pressure sensor, and then the oil pump is started to squeeze the hydraulic oil into the piston, and the piston drives the round rod to extend to increase the support area of ​​the detector. After the detector is raised, stable support for the detector can still be achieved, thereby improving the support stability of the detector.

[0017] Through the setting of the guide block, after the hydraulic oil enters the cavity, the hydraulic oil enters the piston smoothly under the guiding effect of the guide block. The design of the guide block makes the flow of the hydraulic oil smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable one skilled in the relevant art to make and use the present disclosure.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the cross rod of the present invention;

[0021] Figure 3 This is a front cross-sectional view of the round rod of the utility model;

[0022] Figure 4 This is a top cross-sectional view of the guide wheel of the present invention.

[0023] 1. Base plate; 2. Positioning cylinder; 3. Positioning rod; 4. Detector; 5. Universal wheel; 6. Box; 7. Oil pump; 8. Oil tank; 9. Cross rod; 10. Piston; 11. Circular cavity; 12. Spring; 13. Round rod; 14. Movable block; 15. Cavity; 16. Guide block; 17. Guide wheel; 18. Flexible film pressure sensor; 19. Box.

[0024] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0025] The following describes in detail a gas concentration detection device for chemical production safety assessment provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0026] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0027] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0028] like Figures 1-4As shown, the embodiment of the present invention provides a gas concentration detection device for chemical production safety evaluation, including a base plate 1, a square box 6 and an oil tank 8 are fixed on the base plate 1 respectively, the oil tank 8 stores hydraulic oil, a positioning cylinder 2 is fixed on the square box 6, a positioning rod 3 is slidably connected in the positioning cylinder 2, a winch is fixed on the base plate 1, the end of the wire rope on the winch is connected to the positioning rod 3, the winch can drive the positioning rod 3 to move upward along the inner wall of the positioning cylinder 2 by winding the wire rope, and the winch can drive the positioning rod 3 to descend by unwinding the wire rope, thereby realizing the adjustment of the height of the detector 4, the positioning rod 3 is fixed with a detector 4, a block 19 is fixed at the bottom of the positioning rod 3, and the side of the block 19 is rotatably connected to the guide wheel 17, a guide groove is provided on the side of the inner wall of the positioning cylinder 2, and the inner wall of the guide groove is movably connected to the surface of the guide wheel 17, and a flexible film pressure sensor 18 is fixed on the inner wall of the guide groove. An oil pump 7 is fixed in the square box 6, and the flexible film pressure sensor 18 is electrically connected to the oil pump 7. The oil pump 7 is connected to the oil tank 8 through a pipeline. A cross rod 9 is fixed at the bottom of the bottom plate 1, and a cavity 15 is provided at the top of the cross rod 9. A circular cavity 11 is provided inside the cross rod 9, and the circular cavity 11 and the cavity 1 5 is connected, the cavity 15 is connected with the oil outlet of the oil pump 7, a piston 10 is slidably connected in the circular cavity 11, a spring 12 and a round rod 13 are fixed to the side of the piston 10, the end of the spring 12 is fixedly connected to the side of the inner wall of the circular cavity 11, the end of the round rod 13 away from the piston 10 is movable through the cross rod 9 and fixed with a movable block 14, a universal wheel 5 is fixed at the bottom of the movable block 14, the winch on the bottom plate 1 is used to drive the positioning rod 3 to move upward along the inner wall of the positioning cylinder 2 to achieve the rise of the detector 4, and the positioning cylinder 2 drives the guide wheel 17 to move upward along the inner wall of the guide groove through the block 19. The guide wheel 17 moves upward and squeezes the flexible film pressure sensor 18. After detecting the pressure, the flexible film pressure sensor 18 sends a signal to the information processing unit. The information processing unit controls the oil pump 7 to start through the control unit, so that the hydraulic oil in the oil tank 8 enters the cavity 15 and the circular cavity 11 in turn. Then the hydraulic oil squeezes the piston 10, so that the piston 10 drives the round rod 13 to extend. The support area of ​​the detector 4 is increased through the cooperation of the round rod 13 and the universal wheel 5. After the detector 4 is raised, the round rod 13 is extended synchronously to achieve stable support for the detector 4, thereby improving the support stability of the detector 4.

[0029] like Figure 4 As shown, in this embodiment, a connecting seat is fixed on the side of the block 19, and the guide wheel 17 is rotatably connected in the connecting seat. A rotating shaft is fixed in the connecting seat. When the guide wheel 17 rotates, it rotates around the rotating shaft. The rotational connection between the guide wheel 17 and the block 19 is achieved through the cooperation between the connecting seat and the rotating shaft.

[0030] like Figure 4As shown, in this embodiment, there are four guide wheels 17, and the four guide wheels 17 are distributed in a circular array with the axis passing through the block 19 as the array center. The four guide wheels 17 jointly guide the positioning rod 3 to improve the stability of the positioning rod 3 during vertical movement.

[0031] like Figure 3 As shown, in this embodiment, the central axis of the round rod 13 coincides with the central axis of the piston 10, so that the round rod 13 can be smoothly driven to move when the piston 10 moves.

[0032] like Figure 3 As shown, in this embodiment, a guide block 16 is fixed to the bottom of the inner wall of the cavity 15. The guide block 16 is used to guide the passing hydraulic oil so that the hydraulic oil flows smoothly into the circular cavity 11 under the action of the guide block 16, effectively preventing the hydraulic oil from accumulating at the bottom of the inner wall of the cavity 15.

[0033] like Figure 3 As shown, in this embodiment, the top of the guide block 16 is an upward curved surface, which guides the passing hydraulic oil so that the hydraulic oil flows more smoothly toward the piston 10.

[0034] like Figure 3 As shown, in this embodiment, a triangular block is fixed on the top of the cross rod 9, and the triangular block is fixed on the side of the base plate 1. The triangular block improves the connection strength between the cross rod 9 and the base plate 1 and prevents cracking at the connection position between the cross rod 9 and the base plate 1.

[0035] like Figure 2 As shown, in this embodiment, there are four universal wheels 5, and the four universal wheels 5 are distributed in a circular array with the axis passing through the cross rod 9 as the array center. The four universal wheels 5 jointly support the detector 4 to improve the support stability of the detector 4.

[0036] Working principle: The winch is used to drive the positioning rod 3 to move upward along the inner wall of the positioning cylinder 2 to achieve the lifting of the detector 4. The positioning cylinder 2 drives the guide wheel 17 to move upward along the inner wall of the guide groove through the block 19 and the connecting seat. The guide wheel 17 moves upward and squeezes the flexible film pressure sensor 18. After the flexible film pressure sensor 18 senses the pressure, the oil pump 7 is started to transport the hydraulic oil in the oil tank 8 to the cavity 15 and smoothly enters the circular cavity 11 under the diversion action of the guide block 16. The hydraulic oil squeezes the piston 10, so that the piston 10 drives the round rod 13 to extend. The cooperation between the round rod 13 and the universal wheel 5 increases the support area of ​​the detector 4. After the detector 4 is lifted, the round rod 13 is extended synchronously to achieve stable support for the detector 4, thereby improving the support stability of the detector 4.

[0037] After the height of the detector 4 is lowered, the guide wheel 17 is separated from the flexible film pressure sensor 18. After separation, the oil pump 7 stops running, and the piston 10 moves in the opposite direction under the elastic force of the spring 12 to squeeze the hydraulic oil, so that the hydraulic oil enters the oil tank 8. At the same time, the piston 10 drives the universal wheel 5 to move in the opposite direction through the round rod 13, reducing the occupied area of ​​the bottom plate 1, reducing the occupied space of the entire device, and facilitating the storage of the entire device.

[0038] The present invention encompasses any substitutions, modifications, equivalent methods, and solutions that are not within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail in the preferred embodiments of the present invention above, but those skilled in the art can fully understand the present invention without these detailed descriptions.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A gas concentration detection device for chemical production safety evaluation, comprising a bottom plate (1), characterized in that: A square box (6) and an oil tank (8) are fixed on the bottom plate (1), and hydraulic oil is stored in the oil tank (8). A positioning cylinder (2) is fixed on the square box (6), and a positioning rod (3) is slidably connected in the positioning cylinder (2). A detector (4) is fixed on the positioning rod (3). A square block (19) is fixed on the bottom of the positioning rod (3), and the side of the square block (19) is rotatably connected to a guide wheel (17). A guide groove is provided on the side of the inner wall of the positioning cylinder (2), and the inner wall of the guide groove is movably connected to the surface of the guide wheel (17). A flexible film pressure sensor (18) is fixed on the inner wall of the guide groove. An oil pump (7) is fixed in the square box (6), and the flexible film pressure sensor (18) is electrically connected to the oil pump (7). The oil pump (7) is connected to the oil pump (7) through The pipeline is connected to the oil tank (8), a cross rod (9) is fixed at the bottom of the bottom plate (1), a cavity (15) is opened at the top of the cross rod (9), a circular cavity (11) is opened inside the cross rod (9), the circular cavity (11) and the cavity (15) are connected, the cavity (15) is connected to the oil outlet of the oil pump (7), a piston (10) is slidably connected in the circular cavity (11), a spring (12) and a round rod (13) are respectively fixed on the side of the piston (10), the end of the spring (12) is fixedly connected to the side of the inner wall of the circular cavity (11), the end of the round rod (13) away from the piston (10) movably passes through the cross rod (9) and is fixed with a movable block (14), and a universal wheel (5) is fixed at the bottom of the movable block (14).

2. The gas concentration detection device for chemical production safety evaluation according to claim 1, characterized in that: A connecting seat is fixed to the side of the block (19), and the guide wheel (17) is rotatably connected in the connecting seat.

3. The gas concentration detection device for chemical production safety evaluation according to claim 1, characterized in that: The number of the guide wheels (17) is four, and the four guide wheels (17) are distributed in a ring array with the axis passing through the block (19) as the array center.

4. The gas concentration detection device for chemical production safety evaluation according to claim 1, characterized in that: The central axis of the round rod (13) coincides with the central axis of the piston (10).

5. The gas concentration detection device for chemical production safety evaluation according to claim 1, characterized in that: A guide block (16) is fixed to the bottom of the inner wall of the cavity (15).

6. The gas concentration detection device for chemical production safety evaluation according to claim 5, characterized in that: The top of the guide block (16) is an upward curved surface.

7. The gas concentration detection device for chemical production safety evaluation according to claim 1, characterized in that: A triangular block is fixed on the top of the cross rod (9), and the triangular block is fixed on the side of the bottom plate (1).

8. The gas concentration detection device for chemical production safety evaluation according to claim 1, characterized in that: The number of the universal wheels (5) is four, and the four universal wheels (5) are distributed in a ring array with the axis passing through the cross rod (9) as the array center.

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