Positive pressure type explosion-proof electrical control cabinet

Abstract

The utility model provides a kind of positive pressure type explosion-proof electrical control cabinet, including explosion-proof cabinet box and explosion-proof cabinet door, explosion-proof cabinet box is equipped with the inner chamber of cabinet for installing electrical equipment, explosion-proof cabinet door is detachably installed in explosion-proof cabinet box, and blocks the inner chamber of cabinet, first sealing structure is equipped between explosion-proof cabinet box and explosion-proof cabinet door;Positive pressure type explosion-proof electrical control cabinet further includes all the installation air inlet valve and exhaust valve on the outer surface of explosion-proof cabinet box, all the observation window and operation window being equipped on explosion-proof cabinet door, the industrial control screen embedded in observation window, the explosion-proof mouse embedded in operation window and explosion-proof transparent cover;Air inlet valve and exhaust valve are all communicated with the inner chamber of cabinet;Industrial control screen is connected with explosion-proof mouse, explosion-proof transparent cover is fixed on the outer surface of explosion-proof cabinet door, and second sealing structure is equipped between the two, and industrial control screen is covered in explosion-proof transparent cover.The application realizes visual operation by industrial control screen and explosion-proof mouse under the premise of explosion-proof.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof electrical cabinet technology, and in particular to a positive pressure type explosion-proof electrical control cabinet. Background Technology

[0002] An electrical control cabinet is a device used for centralized control of electrical equipment, widely used in industrial automation, power systems, machinery manufacturing, construction, and other fields. In some industrial sites, such as coal mines, oil fields, chemical plants, and natural gas plants, flammable and explosive gases or dust may be present in the environment; and electrical equipment may generate electrical sparks, arcs, or high temperatures during operation, all of which could become ignition sources, leading to explosions. Therefore, electrical control cabinets used in these locations must have explosion-proof capabilities to ensure safe operation in flammable and explosive environments and prevent explosions.

[0003] Currently, explosion-proof electrical control cabinets are mainly classified into four types: flameproof, pressurized, increased safety, and intrinsically safe. Among them, pressurized explosion-proof electrical control cabinets have excellent explosion-proof performance and are widely used. However, existing pressurized explosion-proof electrical control cabinets can only be started and stopped via buttons on the cabinet door, which cannot meet the needs of industrial automation development. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the technical problem to be solved by this utility model is to provide a positive pressure explosion-proof electrical control cabinet that has both good explosion-proof performance and visual operation capability.

[0005] To achieve the above objectives, this utility model provides a positive pressure explosion-proof electrical control cabinet, including an explosion-proof cabinet body and an explosion-proof cabinet door. The explosion-proof cabinet body has an inner cavity for installing electrical equipment. The explosion-proof cabinet door is detachably installed on the explosion-proof cabinet body and seals the inner cavity. A first sealing structure is provided between the explosion-proof cabinet body and the explosion-proof cabinet door. The positive pressure explosion-proof electrical control cabinet also includes an inlet valve and an exhaust valve, both installed on the outer surface of the explosion-proof cabinet body; an observation window and an operation window, both located on the explosion-proof cabinet door; an industrial control screen embedded in the observation window; an explosion-proof mouse embedded in the operation window; and an explosion-proof transparent cover. The inlet valve and the exhaust valve are both connected to the inner cavity of the cabinet, making the pressure inside the cabinet cavity higher than the external pressure. The industrial control screen is connected to the explosion-proof mouse. The explosion-proof transparent cover is fixed to the outer surface of the explosion-proof cabinet door, and a second sealing structure is provided between the two. The industrial control screen is covered inside the explosion-proof transparent cover.

[0006] Furthermore, the positive pressure explosion-proof electrical control cabinet also includes an air inlet pipe fixedly connected to the explosion-proof cabinet body, and an air source triplet installed on the air inlet pipe. One end of the air inlet pipe is an air inlet hole, and the other end is connected to the inner cavity of the cabinet. The air inlet valve is installed on the air inlet pipe, and the air source triplet and the air inlet valve are distributed sequentially along the air inlet direction.

[0007] Furthermore, the intake valve is a manual valve.

[0008] Furthermore, the positive pressure explosion-proof electrical control cabinet also includes a floor base and a rainproof cap. The explosion-proof cabinet body is fixed on the top of the floor base, and the rainproof cap is fixed on the top of the explosion-proof cabinet body and can cover the top surface of the explosion-proof cabinet body.

[0009] Furthermore, the top of the rain cap is fixed with several lugs.

[0010] Furthermore, the positive pressure explosion-proof electrical control cabinet also includes a cabinet air conditioner, which is fixed on the outer surface of the explosion-proof cabinet body.

[0011] Furthermore, the positive pressure explosion-proof electrical control cabinet also includes an operating handle switch installed on the explosion-proof cabinet door and a power execution switch installed in the cabinet cavity of the explosion-proof cabinet body, wherein the operating handle switch is connected to the power execution switch.

[0012] Furthermore, the explosion-proof cabinet door is installed on the explosion-proof cabinet body via hinges, and a handle is fixed on the side of the explosion-proof cabinet door away from the hinges. The explosion-proof cabinet body and the explosion-proof cabinet door are tightened together by several bolts.

[0013] The first sealing structure includes a first annular sealing groove on the inner surface of the explosion-proof cabinet door and a first sealing strip fixed in the first annular sealing groove, wherein the first sealing strip abuts against the explosion-proof cabinet body and the explosion-proof cabinet door.

[0014] The second sealing structure includes a second annular sealing groove on the outer surface of the explosion-proof cabinet door and a second sealing strip fixed in the second annular sealing groove. The second annular sealing groove is located around the observation window, and the second sealing strip abuts between the explosion-proof cabinet door and the explosion-proof transparent cover.

[0015] Furthermore, the explosion-proof transparent cover is an acrylic cover, and the industrial control screen is a touch industrial control screen.

[0016] As described above, the positive pressure explosion-proof electrical control cabinet of this utility model has the following beneficial effects:

[0017] This application utilizes the cooperation of an inlet valve and an exhaust valve to introduce air into the cabinet cavity. This air forms a protective gas, making the pressure inside the cabinet (i.e., inside the positive pressure explosion-proof electrical control cabinet) higher than the external pressure. This prevents flammable and explosive gases from entering the cabinet cavity. Combined with the first and second sealing structures, this effectively improves the overall explosion-proof performance. In particular, while achieving explosion-proof protection, this application embeds a connected industrial control panel and an explosion-proof mouse on the explosion-proof cabinet door. Operators can set parameters using the explosion-proof mouse, and the industrial control panel controls the operation of various electrical devices inside the explosion-proof cabinet, thus enabling visual operation of the positive pressure explosion-proof electrical control cabinet and improving operational convenience. The explosion-proof transparent cover protects the industrial control panel from leakage of electrical sparks, arcs, or high temperatures within the cabinet cavity, thus providing explosion protection. Attached Figure Description

[0018] Figure 1 This is the front view of the positive pressure explosion-proof electrical control cabinet of this utility model.

[0019] Figure 2 for Figure 1 The right view.

[0020] Figure 3 for Figure 1 The left view.

[0021] Component designation explanation

[0022] 10 Explosion-proof cabinet enclosure

[0023] 20 Explosion-proof cabinet doors

[0024] 21 Observation Window

[0025] 22 Operation Window

[0026] 23 handles

[0027] 31 First sealing structure

[0028] 32 Second sealing structure

[0029] 40 Intake valve

[0030] 50 Exhaust valve

[0031] 60 Industrial Control Panels

[0032] 70 Explosion-proof Mouse

[0033] 80 Explosion-proof transparent cover

[0034] 90 intake pipe

[0035] 91 Air intake port

[0036] 110 Gas Source Triple Unit

[0037] 120 floor base

[0038] 130 Rain Hat

[0039] 131 Hanging lugs

[0040] 140 rack air conditioner

[0041] 150 bolts

[0042] 160 Operating handle switch

[0043] 170 Positive Pressure Control System

[0044] 181 Explosion-proof indicator light

[0045] 182 Explosion-proof button

[0046] 183 Explosion-proof Emergency Stop

[0047] 184 Explosion-proof knob

[0048] 185 Three-color sound and light alarm

[0049] 186 Antenna Holes Detailed Implementation

[0050] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0051] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0052] It should also be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or may be connected to an intermediary component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component through an intermediary component.

[0053] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0054] This utility model provides a positive pressure explosion-proof electrical control cabinet. For example... Figures 1 to 3 As shown, the positive pressure type explosion-proof electrical control cabinet includes a detachably connected explosion-proof cabinet body 10 and an explosion-proof cabinet door 20. The explosion-proof cabinet body 10 has an inner cavity for installing electrical equipment. The explosion-proof cabinet body 10 has a front single-door structure. The explosion-proof cabinet door 20 is fixedly installed on the front side of the explosion-proof cabinet body 10 and seals the inner cavity. Furthermore, a first sealing structure 31 is provided between the explosion-proof cabinet body 10 and the explosion-proof cabinet door 20.

[0055] like Figures 1 to 3 As shown, the positive pressure explosion-proof electrical control cabinet also includes an inlet valve 40 and an exhaust valve 50. The inlet valve 40 is installed on the right side of the explosion-proof cabinet body 10, and the exhaust valve 50 is installed on the left side of the explosion-proof cabinet body 10. Both the inlet valve 40 and the exhaust valve 50 are connected to the inner cavity of the cabinet. The inlet valve 40 is used to introduce air into the inner cavity of the cabinet. In this embodiment, the introduced gas is air, which constitutes a protective gas. The exhaust valve 50 is used to periodically exhaust the air in the inner cavity of the cabinet. After exhaust, air is introduced into the inner cavity of the cabinet again through the inlet valve 40. In this way, through the cooperation of the inlet valve 40 and the exhaust valve 50, the pressure inside the inner cavity of the cabinet (i.e., inside the positive pressure explosion-proof electrical control cabinet) is made higher than the external pressure, preventing flammable and explosive gases from outside the positive pressure explosion-proof electrical control cabinet from entering the inner cavity of the cabinet, thus playing an explosion-proof role. Furthermore, the exhaust valve 50 periodically exhausts the air in the inner cavity of the cabinet, and after exhaust, the inlet valve 40 promptly introduces air again, thereby ensuring the cleanliness of the air in the inner cavity of the cabinet and improving the explosion-proof performance.

[0056] In particular, such as Figures 1 to 3As shown, the positive pressure explosion-proof electrical control cabinet also includes an observation window 21 and an operation window 22, both located on the explosion-proof cabinet door 20; an industrial control screen 60 embedded in the observation window 21; an explosion-proof mouse 70 embedded in the operation window 22; and an explosion-proof transparent cover 80. The industrial control screen 60 and the explosion-proof mouse 70 are connected by a cable, which is located on the rear surface of the explosion-proof cabinet door 20 facing the inner cavity of the cabinet. The explosion-proof transparent cover 80 is fixed to the outer surface of the explosion-proof cabinet door 20, and a second sealing structure 32 is provided between the two. The industrial control screen 60 is covered inside the explosion-proof transparent cover 80. This application, while achieving explosion protection, embeds the connected industrial control screen 60 and explosion-proof mouse 70 on the explosion-proof cabinet door 20. Operators can set parameters using the explosion-proof mouse 70, and then control the operation of various electrical devices inside the explosion-proof cabinet 10 using the industrial control screen 60, thereby realizing visual operation of the positive pressure explosion-proof electrical control cabinet and improving operational convenience. Meanwhile, the explosion-proof transparent cover 80 covers the industrial control screen 60. A first sealing structure 31 is provided between the explosion-proof cabinet body 10 and the explosion-proof cabinet door 20, and a second sealing structure 32 is provided between the explosion-proof cabinet door 20 and the explosion-proof transparent cover 80. The explosion-proof transparent cover 80, the first sealing structure 31 and the second sealing structure 32 can effectively prevent the leakage of electric sparks, electric arcs or high temperatures inside the cabinet cavity, play a good explosion-proof role, ensure the safe operation of the positive pressure explosion-proof electrical control cabinet in flammable and explosive environments, and prevent the occurrence of explosion accidents.

[0057] Furthermore, such as Figure 1 As shown, a positive pressure control system 170 is fixedly installed on the explosion-proof cabinet door 20. The air inlet valve 40 and the exhaust valve 50 are connected to the positive pressure control system 170 via cables. The cables are located on the rear surface of the explosion-proof cabinet door 20 facing the inner cavity of the cabinet, and the positive pressure explosion-proof control is performed by the positive pressure control system 170.

[0058] Furthermore, such as Figure 1 As shown, the explosion-proof cabinet door 20 is hinged to the explosion-proof cabinet body 10. A handle 23 is fixed on the side of the explosion-proof cabinet door 20 away from the hinge, allowing the explosion-proof cabinet door 20 to be detachably installed on the front side of the explosion-proof cabinet body 10 for convenient opening and closing. Furthermore, the explosion-proof cabinet body 10 and the explosion-proof cabinet door 20 are secured together by several bolts 150, which are M6 stainless steel bolts to ensure the protection level. The explosion-proof cabinet door 20 is made of steel plate with welded reinforcing ribs. The explosion-proof cabinet body 10 is also integrally welded from bent steel plate. The steel plate is 2mm thick Q235A steel plate, and its surface is powder-coated. The explosion-proof transparent cover 80 is an acrylic cover with high structural strength and good transparency. The industrial control screen 60 is a touch screen industrial control screen.

[0059] Preferably, both the first sealing structure 31 and the second sealing structure 32 employ sealing strip structures. Specifically, the first sealing structure 31 includes a first annular sealing groove on the inner surface of the explosion-proof cabinet door 20 and a first sealing strip fixed within the first annular sealing groove. The first sealing strip abuts against the explosion-proof cabinet body 10 and the explosion-proof cabinet door 20, thereby achieving an explosion-proof seal between the explosion-proof cabinet body 10 and the explosion-proof cabinet door 20. The second sealing structure 32 includes a second annular sealing groove on the outer surface of the explosion-proof cabinet door 20 and a second sealing strip fixed within the second annular sealing groove. The second annular sealing groove is located around the observation window 21, and the second sealing strip abuts against the explosion-proof cabinet door 20 and the explosion-proof transparent cover 80, thereby achieving an explosion-proof seal between the explosion-proof cabinet door 20 and the explosion-proof transparent cover 80. Both the first and second sealing strips are foam sealing strips.

[0060] Furthermore, such as Figure 1 and Figure 2 As shown, the positive pressure explosion-proof electrical control cabinet also includes an air inlet pipe 90 and an air source triplet 110. The air inlet pipe 90 is fixed to the right surface of the explosion-proof cabinet body 10. One end of the air inlet pipe 90 is an air inlet hole 91, and the other end is connected to the inner cavity of the cabinet. The air source triplet 110 and the air inlet valve 40 are both installed on the air inlet pipe 90, and the air source triplet 110 and the air inlet valve 40 are distributed sequentially along the air intake direction. When air is introduced into the inner cavity of the cabinet, the air enters the air inlet pipe 90 through the air inlet hole 91, passes through the air source triplet 110 first, then through the air inlet valve 40, and then enters the inner cavity of the cabinet. The air source triplet 110 integrates an air filter, a pressure reducing valve, and an oil mist lubricator to treat the air entering the inner cavity of the cabinet and ensure cleanliness. Preferably, the air inlet valve 40 is a manual valve, which can be manually controlled to control whether air is introduced.

[0061] Furthermore, the positive-pressure explosion-proof electrical control cabinet is floor-mounted and used outdoors. Based on this, such as Figures 1 to 3 As shown, the positive pressure explosion-proof electrical control cabinet also includes a floor base 120 and a rain cap 130. The explosion-proof cabinet body 10 is fixed to the top of the floor base 120, and the rain cap 130 is fixed to the top of the explosion-proof cabinet body 10 and can cover the top surface of the explosion-proof cabinet body 10. The height of the floor base 120 is determined according to actual needs. Several lifting lugs 131 are fixed to the top of the rain cap 130 to facilitate the hoisting and transportation of the positive pressure explosion-proof electrical control cabinet.

[0062] Furthermore, such as Figure 1 and Figure 3As shown, the positive pressure explosion-proof electrical control cabinet also includes a cabinet air conditioner 140, which is fixed to the left side of the explosion-proof cabinet body 10. The cabinet air conditioner 140 is an explosion-proof air conditioning device used to dissipate heat from the power components, transformers, and other high-power equipment inside the positive pressure explosion-proof electrical control cabinet, ensuring airtightness and overall performance, and ensuring the stable operation of the positive pressure explosion-proof electrical control cabinet.

[0063] Furthermore, such as Figure 1 As shown, the positive pressure explosion-proof electrical control cabinet also includes an operating handle switch 160 installed on the explosion-proof cabinet door 20, and a power execution switch installed in the cabinet cavity of the explosion-proof cabinet body 10. The operating handle switch 160 is connected to the power execution switch. In this embodiment, the power execution switch is a circuit breaker, and the operating handle switch 160 is connected to the circuit breaker's circuit breaker operating mechanism. When the user rotates the operating handle switch 160, they can directly perform the power on / off operation, improving operational convenience. Furthermore, as... Figure 1 and Figure 2 As shown, the positive pressure type explosion-proof electrical control cabinet also includes explosion-proof indicator lights 181, explosion-proof buttons 182, explosion-proof emergency stop 183, and explosion-proof knobs 184, all installed on the explosion-proof cabinet door 20, as well as a three-color audible and visual alarm 185 installed on the upper right surface of the explosion-proof cabinet body 10. The explosion-proof indicator lights 181, explosion-proof buttons 182, explosion-proof emergency stop 183, explosion-proof knobs 184, and three-color audible and visual alarm 185 are all connected to the industrial control screen 60 and are all distributed on the left side of the explosion-proof mouse 70.

[0064] Furthermore, such as Figure 2 As shown, the positive pressure explosion-proof electrical control cabinet also has a remote module and an antenna hole 186. The remote module is installed in the cabinet cavity to realize remote control; combined with the antenna hole 186, the remote debugging signal is good.

[0065] In summary, the positive pressure explosion-proof electrical control cabinet of this utility model has the advantages of excellent explosion-proof performance, suitability for outdoor conditions, good heat dissipation, visual operation, and remote debugging; it is equipped with a cabinet air conditioner 140, which can use the internal power frequency converter for heat dissipation; and it is equipped with an antenna hole 186, which provides good signal for remote debugging.

[0066] In summary, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0067] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A positive pressure type explosion-proof electrical control cabinet, comprising an explosion-proof cabinet body (10) and an explosion-proof cabinet door (20), wherein the explosion-proof cabinet body (10) is provided with an inner cavity for installing electrical equipment, the explosion-proof cabinet door (20) is detachably installed on the explosion-proof cabinet body (10) and seals the inner cavity, and a first sealing structure (31) is provided between the explosion-proof cabinet body (10) and the explosion-proof cabinet door (20), characterized in that: It also includes an air inlet valve (40) and an exhaust valve (50) installed on the outer surface of the explosion-proof cabinet body (10), an observation window (21) and an operation window (22) installed on the explosion-proof cabinet door (20), an industrial control screen (60) embedded in the observation window (21), an explosion-proof mouse (70) embedded in the operation window (22), and an explosion-proof transparent cover (80); the air inlet valve (40) and the exhaust valve (50) are connected to the inner cavity of the cabinet, so that the pressure in the inner cavity of the cabinet is higher than the external pressure; the industrial control screen (60) is connected to the explosion-proof mouse (70), the explosion-proof transparent cover (80) is fixed on the outer surface of the explosion-proof cabinet door (20), and a second sealing structure (32) is provided between the two, and the industrial control screen (60) is covered inside the explosion-proof transparent cover (80).

2. The positive pressure explosion-proof electrical control cabinet according to claim 1, characterized in that: It also includes an air inlet pipe (90) fixedly connected to the explosion-proof cabinet body (10), and an air source triplet (110) installed on the air inlet pipe (90). One end of the air inlet pipe (90) is an air inlet hole (91), and the other end is connected to the inner cavity of the cabinet. The air inlet valve (40) is installed on the air inlet pipe (90). The air source triplet (110) and the air inlet valve (40) are distributed sequentially along the air inlet direction.

3. The positive pressure explosion-proof electrical control cabinet according to claim 1 or 2, characterized in that: The intake valve (40) is a manual valve.

4. The positive pressure explosion-proof electrical control cabinet according to claim 1, characterized in that: It also includes a floor base (120) and a rain cap (130). The explosion-proof cabinet body (10) is fixed on the top of the floor base (120), and the rain cap (130) is fixed on the top of the explosion-proof cabinet body (10) and can cover the top surface of the explosion-proof cabinet body (10).

5. The positive pressure explosion-proof electrical control cabinet according to claim 4, characterized in that: The top of the rain cap (130) is fixed with several lugs (131).

6. The positive pressure explosion-proof electrical control cabinet according to claim 1, characterized in that: It also includes a cabinet air conditioner (140), which is fixed on the outer surface of the explosion-proof cabinet body (10).

7. The positive pressure explosion-proof electrical control cabinet according to claim 1, characterized in that: It also includes an operating handle switch (160) installed on the explosion-proof cabinet door (20) and a power execution switch installed in the cabinet cavity of the explosion-proof cabinet body (10), wherein the operating handle switch (160) is connected to the power execution switch.

8. The positive pressure explosion-proof electrical control cabinet according to claim 1, characterized in that: The explosion-proof cabinet door (20) is installed on the explosion-proof cabinet body (10) by a hinge. A handle (23) is fixed on the side of the explosion-proof cabinet door (20) away from the hinge. The explosion-proof cabinet body (10) and the explosion-proof cabinet door (20) are pressed together by several bolts (150). The first sealing structure (31) includes a first annular sealing groove provided on the inner surface of the explosion-proof cabinet door (20) and a first sealing strip fixed in the first annular sealing groove. The first sealing strip abuts between the explosion-proof cabinet body (10) and the explosion-proof cabinet door (20). The second sealing structure (32) includes a second annular sealing groove on the outer surface of the explosion-proof cabinet door (20) and a second sealing strip fixed in the second annular sealing groove. The second annular sealing groove is located around the observation window (21), and the second sealing strip abuts between the explosion-proof cabinet door (20) and the explosion-proof transparent cover (80).

9. The positive pressure explosion-proof electrical control cabinet according to claim 1, characterized in that: The explosion-proof transparent cover (80) is an acrylic cover, and the industrial control screen (60) is a touch industrial control screen.

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