Protective equipment for SIS system control instrument

Abstract

The utility model relates to the technical field of SIS system control instruments, and discloses a protective device for an SIS system control instrument, which comprises an SIS system control instrument. A protection box body; a guide plate; wherein a mounting channel convenient for mounting the SIS system control instrument is formed among the four guide plates, and the SIS system control instrument can be inserted and mounted in the mounting channel; a limiting plate; after the SIS system control instrument is installed in the installation channel in an inserted mode, the bottom and the top of the rear side of the SIS system control instrument abut against the two limiting plates respectively. A transparent cover plate; and an adsorption structure. According to the utility model, after the SIS system control instrument is installed in the installation channel and covered with the transparent cover plate, under the combined action of the protection box body and the transparent cover plate, the SIS system control instrument body can be protected, and the SIS system control instrument is prevented from being impacted by the outside; and the function keys of the operation panel of the SIS system control instrument can be prevented from being easily touched by non-staff.

Description

Technical Field

[0001] The utility model relates to the technical field of SIS system control instruments, in particular to a protective device for SIS system control instruments. Background Art

[0002] The SIS system (Safety Instrumented System) belongs to the category of enterprise production process automation. It is a system used to ensure safe production. Its safety level is higher than that of the DCS automation control system. When an abnormality occurs in the automated production system, the SIS will intervene to reduce the possibility of accidents.

[0003] SIS system control instruments can be used in the field of oil and gas. SIS system control instruments are crucial in the production and manufacturing of oil and gas.

[0004] Patent document CN 211959752 U discloses a protection device for a SIS system control instrument, comprising a SIS system control instrument, wherein the protection device is provided on the right side of the SIS system control instrument;

[0005] The protection device comprises a first shell, a cover, a first bracket, a support, an inclined rod, a slider, a slide groove and an inclined plate;

[0006] The left side of the first shell is fixedly connected to the right side of the SIS system control instrument, a cover body is provided on the upper right side of the first shell, the bottom left end of the cover body is rotatably connected to the first bracket through a pin shaft, the end of the first bracket is fixedly connected to the right side of the first shell, a support is fixedly connected to the right side of the first bracket, the top of the support is fitted with the bottom of the cover body, a slider is fixedly connected to the upper right side of the first shell, an outer wall of the slider is slidably clamped with an inclined rod, a slide groove is opened at the lower side of the first shell, and the inner wall gap of the slide groove is matched with an inclined plate.

[0007] The above patent document states in its technical problem as follows: "When in use, the SIS system control instrument in the prior art is generally placed or installed in a designated location and is not equipped with a protective device. Therefore, once non-operating personnel touch it, especially when the function keys are touched, it is easy to cause the entire SiS system to be disordered or even paralyzed, seriously affecting the normal operation of the SiS system. In addition, other parts of the SIS system control instrument are not protected, and external impacts may also cause damage to its internal electronic components, making it impossible to operate the SiS system, affecting the operation."

[0008] It can be clearly known from the evidence of the above-mentioned patent documents in their technical issues that the SIS system control instrument in the prior art does not have any protection or safeguard device when in use. Therefore, when the SIS system control instrument is placed in a designated location, the function buttons of its operation panel are easily affected by non-operating personnel when touched, which may affect the normal operation of the SIS system control instrument. In addition, when the SIS system control instrument encounters external impact, it may also cause damage to the internal electronic components of the SIS system control instrument.

[0009] Based on this, a protective device for SIS system control instruments is proposed. Summary of the invention

[0010] 1. Technical issues to be resolved

[0011] In view of the deficiencies of the prior art, the utility model provides a protective device for a SIS system control instrument to solve the following problems raised in the background technology:

[0012] The SIS system control instrument in the prior art does not have any protection or safeguard device when in use. Therefore, when the SIS system control instrument is placed at a designated location, the function buttons on its operation panel may be easily affected by being touched by non-operating personnel, which may also affect the normal operation of the SIS system control instrument. In addition, when the SIS system control instrument encounters external impact, the internal electronic components of the SIS system control instrument may be damaged.

[0013] (II) Technical solution

[0014] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0015] A protective device for SIS system control instrument, comprising:

[0016] SIS system control instrument;

[0017] A protective box, both opposite sides of which are open, a box rear baffle is fixedly installed at one opening, and the SIS system control instrument is installed in the inner cavity of the protective box;

[0018] There are four guide plates, two of which are fixedly mounted on both sides of the bottom of the inner cavity of the protective box, and the other two guide plates are fixedly mounted on both sides of the top of the inner cavity of the protective box;

[0019] Among them, an installation channel is formed between the four guide plates to facilitate the installation of the SIS system control instrument, and the SIS system control instrument can be plugged and installed in the installation channel;

[0020] Two limit plates are provided, and the two limit plates are respectively fixedly mounted on the inner ends of the two guide plates at the bottom of the inner cavity of the protection box body and the inner ends of the two guide plates at the bottom of the inner cavity of the protection box body;

[0021] Wherein, after the SIS system control instrument is plugged and installed in the installation channel, the bottom and top of the rear side of the SIS system control instrument are respectively abutted against two limit plates;

[0022] A transparent cover plate is mounted on the opening of the protective box body and away from the rear baffle of the box body, and the transparent cover plate can be flipped vertically to open and close at the opening of the protective box body; and

[0023] The adsorption structure is installed between the transparent cover plate and the protective box body. When the transparent cover plate is closed, the adsorption structure can adsorb and fix the transparent cover plate and the protective box body.

[0024] Preferably, the adsorption structure includes an iron plate embedded on the bottom of the opening of the protective box, and a bar magnet embedded on the bottom of the transparent cover;

[0025] Wherein, the positions of the iron plate and the bar magnet correspond to each other;

[0026] When the transparent cover is closed, the bar magnet can adsorb the iron plate.

[0027] Preferably, a plurality of hinges are fixedly installed between the transparent cover plate and the protective box body, and the transparent cover plate can be flipped open and closed vertically at the opening of the protective box body through the plurality of hinges.

[0028] Preferably, the side walls on both sides of the protective box body are provided with a plurality of slots, and the plurality of slots are evenly distributed from top to bottom on the side walls of the protective box body;

[0029] A plurality of guide plug-in frames are fixedly mounted on opposite side walls of the protection box, and the plurality of guide plug-in frames are evenly distributed from top to bottom on the side walls of the protection box;

[0030] The position of each guide plug-in frame corresponds to a slot one by one;

[0031] A heat conducting plate is inserted and installed in each of the guide plug-in frames, and one inner end of each of the heat conducting plates abuts against a side wall of the SIS system control instrument.

[0032] Preferably, after the transparent cover is closed, a heat dissipation channel is formed on the rear side and both sides of the inner cavity of the protective box.

[0033] Preferably, a plurality of heat dissipation through holes are provided on the top of the protective box body at one side of the rear baffle of the box body, and each of the heat dissipation through holes is interconnected with the heat dissipation channel.

[0034] Preferably, a motor is fixedly mounted on the central portion of the outer side wall of the rear baffle of the box body, the output shaft of the motor passes inwardly and extends into the heat dissipation channel, and fan blades are fixedly mounted on the output shaft of the motor.

[0035] Preferably, a handle is fixedly mounted on the lower portion of the outer side wall of the transparent cover.

[0036] (III) Beneficial effects

[0037] The utility model provides a protective device for SIS system control instruments, which has the following beneficial effects:

[0038] 1. In the present invention, when the SIS system control instrument is installed in the installation channel and covered with a transparent cover, the protective box and the transparent cover can jointly protect the body of the SIS system control instrument to prevent external impact on the SIS system control instrument, and can also prevent the function buttons of the operation panel of the SIS system control instrument from being easily touched by non-staff.

[0039] Second, in the present invention, the adsorption structure can adsorb and fix the transparent cover plate to the protective box body. Conversely, the adsorption structure can also facilitate the transparent cover plate to be opened from the protective box body.

[0040] 3. In the utility model, the adsorption structure includes an iron plate embedded on the bottom of the opening of the protective box body, and a strip magnet embedded on the bottom of the transparent cover. When the transparent cover is closed, the strip magnet can adsorb the iron plate.

[0041] Fourth, in the utility model, the transparent cover can be conveniently opened by pulling the handle.

[0042] 5. In the utility model, a heat conducting plate is installed in each guide plug-in frame, the inner end of each heat conducting plate is in contact with the side wall of the SIS system control instrument, and the outer end of each heat conducting plate extends outward. With the action of multiple heat conducting plates, heat dissipation of the SIS system control instrument can be achieved.

[0043] 6. In the present invention, after the transparent cover is closed, a heat dissipation channel is formed on the rear side and both sides of the inner cavity of the protective box body, and the heat dissipation channel can be used for heat dissipation, and the heat in the heat dissipation channel can be conducted outward through the heat conduction plate.

[0044] 7. In the present invention, a plurality of heat dissipation holes are provided on the top of the protective box body at one side of the rear baffle of the box body, each heat dissipation hole is interconnected with the heat dissipation channel, and the plurality of heat dissipation holes can also facilitate the dissipation of heat in the heat dissipation channel.

[0045] 8. In the utility model, when the motor is working, it can drive the rotation of the fan blades through its output shaft. When the fan blades rotate, the wind generated fills the heat dissipation channel. Through multiple heat dissipation holes, internal and external heat exchange can be achieved, thereby realizing air cooling of the SIS system control instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0047] Figure 2 It is a three-dimensional schematic diagram of the transparent cover plate of the utility model after being covered;

[0048] Figure 3 It is a three-dimensional schematic diagram of a partial cross-section of the transparent cover plate of the utility model after being covered by the rear view;

[0049] Figure 4 It is a three-dimensional schematic diagram of the protective box of the utility model;

[0050] Figure 5 It is a three-dimensional schematic diagram of the motor and fan blades of the utility model;

[0051] Figure 6 It is a three-dimensional schematic diagram of the SIS system control instrument of the utility model.

[0052] In the figure: 10, SIS system control instrument; 20, protective box; 201, box rear baffle; 202, slot; 30, guide plug-in frame; 40, guide plate; 50, limit plate; 60, installation channel; 70, heat conduction plate; 80, transparent cover; 90, hinge; 100, iron plate; 110, strip magnet; 120, handle; 130, heat dissipation channel; 140, motor; 150, fan blade; 160, heat dissipation through hole. DETAILED DESCRIPTION

[0053] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0054] Embodiment 1

[0055] SIS system control instruments can be used in the field of oil and gas. SIS system control instruments are crucial in the production and manufacturing of oil and gas.

[0056] Patent document CN 211959752 U discloses a protection device for SIS system control instruments. According to the evidence in the technical issues of the above patent document, it can be clearly known that the SIS system control instruments in the prior art do not have protection or safeguard devices when in use. Therefore, when the SIS system control instrument is placed in a designated location, the function buttons of its operation panel are easily affected by non-operating personnel. The normal operation of the SIS system control instrument is also easily affected when the SIS system control instrument encounters external impact. In addition, the internal electronic components of the SIS system control instrument may be damaged.

[0057] Based on this, in order to solve the above technical problems, the inventors have adopted the following technical solutions, which are as follows:

[0058] like Figure 1-6 As shown, the utility model provides a technical solution:

[0059] A protective device for SIS system control instrument, comprising:

[0060] SIS system control instrument 10, which is used in the production and processing of oil and natural gas, performs full automation control on the production and processing of oil and natural gas, so as to improve the safety of oil and natural gas in the production and processing;

[0061] The protective box 20 has two opposite sides that are open, and a box back baffle 201 is fixedly installed at one opening, and the SIS system control instrument 10 is installed in the inner cavity of the protective box 20;

[0062] The protection box 20 is used to accommodate the SIS system control instrument 10 and protect the SIS system control instrument 10;

[0063] Four guide plates 40 are provided, wherein two guide plates 40 are respectively fixedly mounted on both sides of the bottom of the inner cavity of the protective box body 20, and the other two guide plates 40 are respectively fixedly mounted on both sides of the top of the inner cavity of the protective box body 20;

[0064] Among them, an installation channel 60 is formed between the four guide plates 40 to facilitate the installation of the SIS system control instrument 10, and the SIS system control instrument 10 can be plugged and installed in the installation channel 60;

[0065] When the SIS system control instrument 10 is plugged and installed in the installation channel 60, the front side of the SIS system control instrument 10 is flush with the end face of the opening of the protection box 20, the bottom and top of the side walls of the SIS system control instrument 10 are respectively abutted against the inner side walls of the four guide plates 40, the bottom of the SIS system control instrument 10 is abutted against the bottom of the inner cavity of the protection box 20, and the top of the SIS system control instrument 10 is abutted against the top of the inner cavity of the protection box 20;

[0066] The limiting plates 50 are provided with two, and the two limiting plates 50 are respectively fixedly mounted on the inner ends of the two guide plates 40 at the bottom of the inner cavity of the protection box body 20, and on the inner ends of the two guide plates 40 at the bottom of the inner cavity of the protection box body 20;

[0067] After the SIS system control instrument 10 is inserted and installed in the installation channel 60, the bottom and top of the rear side of the SIS system control instrument 10 are respectively in contact with the two limit plates 50;

[0068] A transparent cover plate 80 is installed on the opening of the protective box 20 and away from the rear baffle 201 of the box. The transparent cover plate 80 can be flipped vertically at the opening of the protective box 20 to protect the function keys of the operation panel of the SIS system control instrument 10 when closed; and

[0069] The adsorption structure is installed between the transparent cover plate 80 and the protective box body 20. When the transparent cover plate 80 is covered, the adsorption structure can adsorb and fix the transparent cover plate 80 and the protective box body 20.

[0070] In this embodiment, when the SIS system control instrument 10 is installed in the installation channel 60 and covered with a transparent cover 80, the protective box 20 and the transparent cover 80 work together to not only protect the body of the SIS system control instrument 10 from external impact, but also prevent the function buttons on the operation panel of the SIS system control instrument 10 from being easily touched by non-staff.

[0071] In this embodiment, the adsorption structure can adsorb and fix the transparent cover plate 80 and the protective box body 20 . Conversely, the adsorption structure can also facilitate the transparent cover plate 80 to be opened from the protective box body 20 .

[0072] Specifically, the SIS system control instrument 10 adopts the SPC TCS-900 safety instrument system.

[0073] Embodiment 2

[0074] like Figure 1-6 As shown, based on the first embodiment, the following improvements are made:

[0075] In order to optimize the specific structure of the adsorption structure, the inventor further, in this embodiment, the adsorption structure includes an iron plate 100 embedded on the bottom of the opening of the protective box 20, and a bar magnet 110 embedded on the bottom of the transparent cover 80;

[0076] The positions of the iron plate 100 and the bar magnet 110 correspond to each other;

[0077] When the transparent cover 80 is closed, the bar magnet 110 can attract the iron plate 100 .

[0078] In order to facilitate the staff to open the transparent cover 80, the inventor has further provided a handle 120 fixedly installed on the lower portion of the outer wall of the transparent cover 80 in this embodiment, and the transparent cover 80 can be conveniently opened by pulling the handle 120.

[0079] Embodiment 3

[0080] like Figure 1-6 As shown, based on the first embodiment, the following improvements are made:

[0081] In order to enable the transparent cover 80 to be flipped and opened in the vertical direction, the inventor further fixedly installed a plurality of hinges 90 between the transparent cover 80 and the protective box 20 in the present embodiment, and the transparent cover 80 can be flipped and opened vertically at the opening of the protective box 20 through the plurality of hinges 90.

[0082] Embodiment 4

[0083] like Figure 1-6 As shown, based on the first embodiment, the following improvements are made:

[0084] In order to solve the heat dissipation problem after the SIS system control instrument 10 is installed in the protection box 20, the inventor further provides a plurality of slots 202 on the opposite side walls of the protection box 20 in this embodiment, and the plurality of slots 202 are evenly distributed from top to bottom on the side walls of the protection box 20;

[0085] A plurality of guide plug-in frames 30 are fixedly mounted on opposite side walls of the protection box 20, and the plurality of guide plug-in frames 30 are evenly distributed from top to bottom on the side walls of the protection box 20;

[0086] The position of each guide plug-in frame 30 corresponds to the slot 202 one by one;

[0087] A heat conducting plate 70 is installed in each guide plug-in frame 30, and the inner end of each heat conducting plate 70 is in contact with the side wall of the SIS system control instrument 10, and the outer end of each heat conducting plate 70 extends outward. With the action of multiple heat conducting plates 70, heat dissipation of the SIS system control instrument 10 can be achieved.

[0088] Embodiment 5

[0089] like Figure 1-6 As shown, based on the first embodiment, the following improvements are made:

[0090] In order to better solve the heat dissipation problem after the SIS system control instrument 10 is installed in the protective box 20, in the present embodiment, further, after the transparent cover 80 is closed, a heat dissipation channel 130 is formed on the rear side and both sides of the inner cavity of the protective box 20. The heat dissipation channel 130 can be used for heat dissipation, and the heat in the heat dissipation channel 130 can be conducted outward through the heat conducting plate 70.

[0091] Furthermore, a plurality of heat dissipation holes 160 are provided on the top of the protective box 20 on one side of the box rear baffle 201 , and each heat dissipation hole 160 is interconnected with the heat dissipation channel 130 . The plurality of heat dissipation holes 160 can also facilitate the heat dissipation in the heat dissipation channel 130 .

[0092] Furthermore, a motor 140 is fixedly installed in the center of the outer wall of the rear baffle 201 of the box body, and the output shaft of the motor 140 passes through inward and extends into the heat dissipation channel 130. The fan blade 150 is fixedly installed on the output shaft of the motor 140. When the motor 140 is working, it can drive the rotation of the fan blade 150 through its output shaft. When the fan blade 150 rotates, the wind generated fills the heat dissipation channel 130, and internal and external heat exchange can be achieved through a plurality of heat dissipation holes 160, thereby realizing air-cooling of the SIS system control instrument 10.

[0093] In summary, the workflow of the utility model is:

[0094] like Figure 1-6 As shown, when the SIS system control instrument 10 is installed in the installation channel 60 and covered with a transparent cover 80, the protective box 20 and the transparent cover 80 work together to not only protect the body of the SIS system control instrument 10 from external impact, but also prevent the function buttons on the operation panel of the SIS system control instrument 10 from being easily touched by non-staff.

[0095] The adsorption structure can adsorb and fix the transparent cover plate 80 and the protective box body 20. Conversely, the adsorption structure can also conveniently open the transparent cover plate 80 from the protective box body 20.

[0096] By pulling the handle 120, the transparent cover 80 can be easily opened;

[0097] A heat conducting plate 70 is inserted and installed in each guide plug-in frame 30, and the inner end of each heat conducting plate 70 abuts against the side wall of the SIS system control instrument 10, and the outer end of each heat conducting plate 70 extends outward. Under the action of multiple heat conducting plates 70, heat dissipation of the SIS system control instrument 10 can be achieved;

[0098] After the transparent cover plate 80 is closed, a heat dissipation channel 130 is formed on the rear side and both sides of the inner cavity of the protective box body 20. The heat dissipation channel 130 can be used for heat dissipation, and the heat in the heat dissipation channel 130 can be conducted outward through the heat conducting plate 70;

[0099] The top of the protective box 20 is provided with a plurality of heat dissipation holes 160 on one side of the box rear baffle 201, each heat dissipation hole 160 is interconnected with the heat dissipation channel 130, and the plurality of heat dissipation holes 160 can also facilitate the heat dissipation in the heat dissipation channel 130;

[0100] A motor 140 is fixedly installed in the center of the outer wall of the rear baffle 201 of the box body. The output shaft of the motor 140 passes through inward and extends into the heat dissipation channel 130. The fan blade 150 is fixedly installed on the output shaft of the motor 140. When the motor 140 is working, it can drive the rotation of the fan blade 150 through its output shaft. When the fan blade 150 rotates, the wind generated fills the heat dissipation channel 130. Through a plurality of heat dissipation holes 160, internal and external heat exchange can be achieved, thereby realizing air-cooling of the SIS system control instrument 10.

[0101] The above different embodiments can be combined, replaced and used in conjunction with each other.

[0102] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0103] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective device for SIS system control instrument, characterized in that: include: SIS system control instruments (10); A protective box (20) having two opposite sides which are both open, a box rear baffle (201) being fixedly mounted at one opening, and the SIS system control instrument (10) being mounted in the inner cavity of the protective box (20); Four guide plates (40) are provided, wherein two of the guide plates (40) are respectively fixedly mounted on two sides of the bottom of the inner cavity of the protection box (20), and the other two guide plates (40) are respectively fixedly mounted on two sides of the top of the inner cavity of the protection box (20); Wherein, an installation channel (60) is formed between the four guide plates (40) for facilitating the installation of the SIS system control instrument (10), and the SIS system control instrument (10) can be plugged and installed in the installation channel (60); Two limit plates (50) are provided, and the two limit plates (50) are respectively fixedly mounted on one end of the inner side of two guide plates (40) at the bottom of the inner cavity of the protection box (20), and on one end of the inner side of two guide plates (40) at the bottom of the inner cavity of the protection box (20); Wherein, after the SIS system control instrument (10) is inserted and installed in the installation channel (60), the bottom and top of the rear side of the SIS system control instrument (10) are respectively in contact with two limit plates (50); A transparent cover plate (80) is mounted on the opening of the protective box (20) and away from the box rear baffle (201), and the transparent cover plate (80) can be flipped vertically to open and close at the opening of the protective box (20); and The adsorption structure is installed between the transparent cover plate (80) and the protective box body (20); when the transparent cover plate (80) is covered, the adsorption structure can adsorb and fix the transparent cover plate (80) and the protective box body (20).

2. The protective device for SIS system control instrument according to claim 1, characterized in that: The adsorption structure comprises an iron plate (100) embedded in the bottom of the opening of the protective box (20), and a bar magnet (110) embedded in the bottom of the transparent cover plate (80); Wherein, the positions of the iron plate (100) and the bar magnet (110) correspond to each other; When the transparent cover plate (80) is closed, the bar magnet (110) can adsorb the iron plate (100).

3. A protective device for SIS system control instrument according to claim 1 or 2, characterized in that: A plurality of hinges (90) are fixedly mounted between the transparent cover plate (80) and the protective box body (20), and the transparent cover plate (80) can be flipped open and closed vertically at the opening of the protective box body (20) via the plurality of hinges (90).

4. The protective device for SIS system control instrument according to claim 1, characterized in that: A plurality of slots (202) are provided on the two opposite side walls of the protection box (20), and the plurality of slots (202) are evenly spaced from top to bottom on the side walls of the protection box (20); A plurality of guide plug-in frames (30) are fixedly mounted on opposite side walls of the protection box (20), and the plurality of guide plug-in frames (30) are evenly distributed from top to bottom on the side walls of the protection box (20); The position of each guide plug-in frame (30) corresponds to the slot (202) one by one; A heat conducting plate (70) is inserted and installed in each of the guide plug-in frames (30), and an inner end of each of the heat conducting plates (70) abuts against a side wall of the SIS system control instrument (10).

5. The protective device for SIS system control instrument according to claim 1, characterized in that: After the transparent cover plate (80) is closed, a heat dissipation channel (130) is formed on the rear side and both sides of the inner cavity of the protective box body (20).

6. The protective device for SIS system control instrument according to claim 5, characterized in that: A plurality of heat dissipation through holes (160) are provided on the top of the protective box (20) at one side of the box rear baffle (201), and each of the heat dissipation through holes (160) is interconnected with the heat dissipation channel (130).

7. The protective device for SIS system control instrument according to claim 6, characterized in that: A motor (140) is fixedly mounted on the central portion of the outer wall of the rear baffle (201) of the box body, an output shaft of the motor (140) penetrates inwardly and extends into the heat dissipation channel (130), and a fan blade (150) is fixedly mounted on the output shaft of the motor (140).

8. The protective device for SIS system control instrument according to claim 2, characterized in that: A handle (120) is fixedly mounted on the lower portion of the outer side wall of the transparent cover plate (80).

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