Pipeline electromagnetic equipment protection box

Abstract

The utility model discloses a pipeline electromagnetic equipment protection box which comprises a shell body, an access cover is arranged at the upper end of the shell body, an upper fixing plate and a lower fixing plate are arranged at the lower ends of the two sides of the access cover and located between the access cover and the shell body respectively, and the upper fixing plate and the lower fixing plate are symmetrically arranged up and down. The access cover, the fixed plate upper part and the fixed plate lower part are vertically connected with the shell main body in an inserting manner; limiting insertion rods are vertically and fixedly connected to the lower ends of the side faces of the access cover correspondingly and are in insertion connection with the upper portion and the lower portion of the fixing plate and the shell body correspondingly. According to the pipeline electromagnetic equipment protection box, through the matching design of multiple structures, the device can protect an electromagnetic valve, the service life of the electromagnetic valve is ensured, and through the connecting structure design of the access cover, the upper fixing plate and the lower fixing plate, the electromagnetic valve can be protected; the maintenance cover, the upper fixing plate and the lower fixing plate are convenient and fast to mount or dismount, so that the electromagnetic valve is convenient to maintain or replace.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to a pipeline electromagnetic equipment protection box, which is specifically suitable for an automatic purge device for thermal power generation. Background Art

[0002] The solenoid valve is controlled and is a basic automation component used to control fluids. It is an actuator and is not limited to hydraulic and pneumatic. It is used to adjust the direction of the medium in industrial control systems. In order to improve the protection performance of the solenoid valve and avoid damage to the solenoid valve due to the influence of the external environment, a protective cover will be installed on the solenoid valve.

[0003] For example, the Chinese utility model patent (CN202120999528.X) discloses a solenoid valve installation device with a protective function, which records: "It includes a right protective shell and a left protective shell, a shock absorbing device is arranged at the connection between the right protective shell and the left protective shell, a solenoid valve body is arranged inside the right protective shell and the left protective shell, a base is arranged on the solenoid valve body, a bolt is arranged on the base, and a slide groove is arranged inside the frames on both sides of the right protective shell and the left protective shell, and a slider is arranged inside the slide groove. By adding left and right protective shells, the phenomenon of the solenoid valve being placed outside for a long time is prevented, and the solenoid valve body is prevented from being corroded by the sun and rain, and the service life of the solenoid valve is shortened, and the service life is increased. By arranging a shock absorbing spring device at the connection between the right protective shell and the left protective shell, the solenoid valve is prevented from being hit by external objects and affecting the operation of the solenoid valve.

[0004] Most of the sampling media in the thermal control sampling pipelines of thermal power plants are coal powder, dust, slurry, and water. After a period of use, the elbows and horizontal parts of the pipelines are prone to blockage or water accumulation, which can easily cause parameter jumps and inaccurate measurements, affecting the judgment of the operating personnel. When the pipelines are blocked or water accumulates, maintenance personnel need to use external air source pipelines for purge. When some sampling pipelines are blocked, the sampling devices can only be removed for cleaning, which cannot be handled when the unit is running, resulting in the inability of the operating personnel to monitor. Long-term blockage will cause unidirectional pressure on the instrument, damaging the instrument. The instrument sampling tube is blocked and the instrument sampling tube needs to be replaced, which is a large workload.

[0005] In summary, although the solenoid valve can be protected by a protective shell in the prior art, this method has the following technical problems: it is inconvenient to disassemble and assemble the protective shell, which is inconvenient to maintain or replace the solenoid valve. At the same time, the sampling pipeline of the existing thermal power plant equipment has no purge device, and the purge device is generally installed near the corner of the wall. Accidental collisions with rainwater and handling equipment seriously affect the service life of the solenoid valve and pipeline, especially the service life of the installed solenoid valve is greatly reduced by wind, rain, and sun exposure. In addition, electromagnetic components are very prone to failure in the summer under the power generation environment of thermal power plants, further reducing their service life. The present application proposes a pipeline electromagnetic equipment protection box to provide a new technical solution to solve the technical problems mentioned above. Utility Model Content

[0006] Based on this, it is necessary to provide a pipeline electromagnetic equipment protection box to address the above-mentioned technical problems. Through the coordinated design of multiple structures, the device can protect the solenoid valve and ensure the service life of the battery valve. Moreover, through the connection structure design of the inspection cover, the fixed plate, and the bottom of the fixed plate, the installation or disassembly of the inspection cover, the fixed plate, and the bottom of the fixed plate is more convenient and quick, thereby making it more convenient to maintain or replace the solenoid valve.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A pipeline electromagnetic equipment protection box is used for electromagnetic valve protection.

[0009] The pipeline electromagnetic equipment protection box specifically includes: a shell body, an inspection cover is arranged at the upper end of the shell body, and fixed plates and fixed plates are respectively arranged at the lower ends of both sides of the inspection cover and between the inspection cover and the shell body, and the fixed plates and fixed plates are symmetrically arranged up and down, and the inspection cover, the fixed plate and the fixed plate are all vertically plug-in connected with the shell body; a limiting plug rod is vertically fixedly connected at the lower end position of the side surface of the inspection cover, and the limiting plug rod is plug-in connected to the fixing plate, the fixing plate and the shell body respectively, and the connection between the limiting plug rod and the shell body is detachable and fixed by a fixing bolt; a rubber pad is fixedly connected to the inner bottom of the shell body, and a positioning groove is opened at the upper end of the rubber pad.

[0010] Furthermore, semicircular holes are opened on the fixing plate and on the bottom of the fixing plate, the semicircular holes on the fixing plate and on the bottom of the fixing plate are spliced ​​to form pipe holes, pipes are installed in the pipe holes, and the pipes are connected to an automatic purge device, which is used to purge the pipeline to prevent the pipeline from being blocked.

[0011] The automatic purge device specifically comprises:

[0012] A valve body, wherein a first pipeline connection seat, a second pipeline connection seat, and a third pipeline connection seat are respectively arranged on the outer side of the valve body, the first pipeline connection seat and the second pipeline connection seat are located on the same side of the valve body, the first pipeline connection seat and the second pipeline connection seat are arranged in parallel up and down, the third pipeline connection seat is located on the other side of the valve body, and the third pipeline connection seat is located at a height position between the first pipeline connection seat and the second pipeline connection seat. An active cavity is opened inside the valve body, the first pipeline connection seat, the second pipeline connection seat, and the third pipeline connection seat are all connected to the inside of the active cavity, and an electromagnetic active rod is vertically slidably connected to the inside of the active cavity, and a sealing plug is fixedly connected to the electromagnetic active rod, and when the electromagnetic active rod moves upward, the sealing plug blocks the passage between the first pipeline connection seat and the third pipeline connection seat; when the electromagnetic active rod moves downward, the passage between the second pipeline connection seat and the third pipeline connection seat is blocked.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The pipeline electromagnetic equipment protection box provided by the utility model, through the coordinated design of multiple structures, enables the device to protect the electromagnetic valve and ensure the service life of the battery valve, and through the connection structure design of the inspection cover, the fixing plate, and the fixing plate, the installation or removal of the inspection cover, the fixing plate, and the fixing plate are relatively convenient and quick, so that the electromagnetic valve is more convenient to maintain or replace. The pipeline electromagnetic equipment protection box provided by the utility model, through the structural coordination design of the heat dissipation groove and the heat dissipation through hole, enables the device to have a heat dissipation effect and can reduce the intrusion of rainwater.

[0015] 2. An automatic purge device is installed on the protection box of the pipeline electromagnetic equipment. The automatic purge device provided by the utility model can utilize the displacement function of the electromagnetic valve in the prior art through the coordinated design of multiple structures, and can realize the up and down movement of the electromagnetic movable rod. The opening and closing control of the passage between the first pipeline connection seat and the third pipeline connection seat, and the second pipeline connection seat and the third pipeline connection seat can be realized through the sealing plug. When the passage between the first pipeline connection seat and the third pipeline connection seat is opened, the third pipeline connection seat can be purged through an external purge gas source, thereby avoiding the accumulation of sampling media in the pipeline. In combination with the time relay, regular purge can be achieved every day to ensure the smooth flow of instrument pipelines, improve measurement accuracy, and reduce the work intensity of operators. The automatic purge device provided by the utility model can protect the valve body through the protective shell, improve the service life of the valve body, and can realize air circulation inside the protective shell in combination with the heat dissipation groove, protective cover, and air intake groove to avoid heat accumulation during the operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a schematic diagram of the overall structure of the pipeline electromagnetic equipment protection box provided by the utility model;

[0018] Figure 2 This is a schematic diagram of the structure after the inspection cover, upper fixing plate and lower fixing plate of the pipeline electromagnetic equipment protection box provided by the utility model are removed;

[0019] Figure 3 A schematic diagram of the structure of the inspection cover, the upper fixing plate, the lower fixing plate and the limit rod of the pipeline electromagnetic equipment protection box provided by the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the pipeline electromagnetic equipment protection box provided by the utility model after the limit plug rod is removed;

[0021] Figure 5 A schematic diagram of the connection structure on and under the fixing plate of the pipeline electromagnetic equipment protection box provided by the utility model;

[0022] Figure 6 A schematic diagram of the structure of the heat dissipation through hole, dust screen, fixing frame and air guide fan of the pipeline electromagnetic equipment protection box provided by the utility model;

[0023] Figure 7 A schematic diagram of the structure of the protection box and protection grille of the pipeline electromagnetic equipment provided by the utility model;

[0024] Figure 8 This is a schematic diagram of the overall structure of the automatic purge device provided by the utility model;

[0025] Fig. 9 A cross-sectional view of the internal structure of the valve body of the automatic purge device provided by the utility model;

[0026] Fig.10 A schematic diagram of the structure of the protective housing of the automatic purge device provided by the utility model;

[0027] Fig.11 An exploded view of the structure of the protective housing of the automatic purge device provided by the utility model;

[0028] Fig.12 A schematic diagram of the structure of the heat dissipation slot, protective cover and air intake slot of the automatic purge device provided by the utility model;

[0029] Fig.13 A schematic diagram of the structure of the protective cover of the automatic purge device provided by the utility model;

[0030] Fig.14 A structural sectional view of the housing of the automatic purge device provided by the utility model;

[0031] Fig.15 This is a structural schematic diagram of the buckling strip of the automatic purge device provided by the utility model.

[0032] The markings in the figure are as follows:

[0033] 1. Shell body; 2. Inspection cover; 3. On the fixing plate; 4. Under the fixing plate; 5. Limiting rod; 6. Fixing bolt; 7. Rubber pad; 8. Buckle seat; 9. Buckle block; 10. Connecting frame; 11. Fixing screw; 12. Heat dissipation slot I; 13. Heat dissipation hole; 14. Dustproof net; 15. Fixing frame; 16. Air guide fan I; 17. Protective cover; 18. Protective grille; 19. Rain guide plate; 20. End plate; 201. Valve body; 202. First pipeline Connecting seat; 203, second pipe connecting seat; 204, third pipe connecting seat; 205, movable cavity; 206, electromagnetic movable rod; 207, sealing plug; 208, outer shell; 209, heat dissipation groove II; 2010, protective cover; 2011, air intake groove; 2012, semicircular threaded seat; 2013, nut; 2014, ring; 2015, protective net; 2016, buckle strip; 2017, buckle groove; 2018, air guide fan II. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0035] As in the background art, it is inconvenient to disassemble and assemble the protective shell, which is inconvenient when maintaining or replacing the solenoid valve.

[0036] In order to solve this technical problem, the utility model provides a pipeline electromagnetic equipment protection box, which is applied to the protection of solenoid valves.

[0037] Specifically, please refer to Figure 1-Figure 4 , pipeline electromagnetic equipment protection box specifically includes:

[0038] Shell body 1, the upper end of the shell body 1 is provided with an inspection cover 2, the lower ends of both sides of the inspection cover 2 and located between the inspection cover 2 and the shell body 1 are respectively provided with a fixing plate 3 and a fixing plate bottom 4, the fixing plate 3 and the fixing plate bottom 4 are symmetrically arranged up and down, and the inspection cover 2, the fixing plate 3, and the fixing plate bottom 4 are all vertically plug-connected with the shell body 1;

[0039] The lower end of the side of the inspection cover 2 is vertically fixedly connected with a limit rod 5, and the limit rod 5 is plug-connected to the fixing plate 3, the fixing plate bottom 4, and the shell body 1 respectively, and the connection between the limit rod 5 and the shell body 1 is detachably fixed by a fixing bolt 6;

[0040] A rubber pad 7 is fixedly connected to the inner bottom of the shell body 1 , and a positioning groove is formed at the upper end of the rubber pad 7 .

[0041] The pipeline electromagnetic equipment protection box provided by the utility model, through the coordinated design of multiple structures, enables the device to protect the electromagnetic valve and ensure the service life of the battery valve, and through the connection structure design of the inspection cover 2, the fixing plate 3, and the fixing plate 4, the installation or disassembly of the inspection cover 2, the fixing plate 3, and the fixing plate 4 is relatively convenient and quick, so that it is more convenient to maintain or replace the electromagnetic valve.

[0042] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0043] Embodiment 1:

[0044] Please refer to Figure 1-Figure 6 , a pipeline electromagnetic equipment protection box, comprising:

[0045] Shell body 1, the upper end of the shell body 1 is provided with an inspection cover 2, the lower ends of both sides of the inspection cover 2 and located between the inspection cover 2 and the shell body 1 are respectively provided with a fixing plate 3 and a fixing plate bottom 4, the fixing plate 3 and the fixing plate bottom 4 are symmetrically arranged up and down, and the inspection cover 2, the fixing plate 3, and the fixing plate bottom 4 are all vertically plug-connected with the shell body 1;

[0046] The lower end of the side of the inspection cover 2 is vertically fixedly connected with a limited plug rod 5, which is plug-connected to the fixed plate 3, the lower part of the fixed plate 4, and the shell body 1. The connection between the limited plug rod 5 and the shell body 1 is detachably fixed by a fixing bolt 6; it can be known that the top of the shell body 1 can be closed by the inspection cover 2, so that the solenoid valve can be protected by the shell body 1 and the inspection cover 2, and the pipeline can be fixed by the fixed plate 3 and the lower part of the fixed plate 4; the limited plug rod 5 at the lower end of the inspection cover 2 is plugged into the fixed plate 3 and the lower part of the fixed plate 4, and the lower end of the limited plug rod 5 is fixed to the shell body 1 with the fixing bolt 6, so that the fixed plate 3 and the lower part of the fixed plate 4 can be clamped and fixed by the inspection cover 2 and the shell body 1. ;

[0047] Furthermore, buckle seats 8, buckle blocks 9 and connecting frames 10 are respectively provided on the outer sides of the fixing plate 3 and the fixing plate 4. The buckle seats 8 are fixedly connected to the lower outer side of the fixing plate 3, the buckle blocks 9 are fixedly connected to the upper outer side of the fixing plate 4, the buckle seats 8 are buckled and connected with the buckle blocks 9, and the connecting frame 10 is arranged at the lower outer side of the fixing plate 4. Four fixing screws 11 are provided at the ends of the connecting frame 10. The two fixing screws 11 at the upper end of the connecting frame 10 are threadedly connected to the fixing plate 4, and the two fixing screws 11 at the lower end of the connecting frame 10 are threadedly connected to the shell body 1. After the inspection cover 2 is removed, it is only necessary to pull the fixing plate 3 upwards until the buckle seat 8 and the buckle block 9 are separated, so that the fixing plate 3 can be removed, thereby releasing the fixation of the pipeline. The fixing plate 3 is reset to fix the fixing plate 3 and the fixing plate below 4 through the engagement of the buckle seat 8 and the buckle block 9, and the fixing plate below 4 is fixed to the shell body 1 through the cooperation of the connecting frame 10 and the fixing screws 11; the fixing plate below 4 can be removed by removing the fixing screws 11, so that the fixing plate 3 and the fixing plate below 4 corresponding to the pipeline can be replaced according to usage requirements.

[0048] Further, both ends of the shell body 1 are provided with a heat dissipation groove Ⅰ12 and a heat dissipation through hole 13, the heat dissipation groove Ⅰ12 is located at the upper part of the shell body 1, and a protective grille 18 is provided on the inner side of the shell body 1 and at a position corresponding to the heat dissipation groove Ⅰ12. The heat dissipation through hole 13 and the heat dissipation groove Ⅰ12 realize ventilation and heat dissipation of the device. The protective grille 18 can prevent rainwater from entering the inside of the device through the heat dissipation groove Ⅰ12. An air guide fan Ⅰ16 is fixedly connected to the inner side of the shell body 1 and at a position corresponding to the heat dissipation through hole 13. By starting the air guide fan Ⅰ16, the air circulation effect inside and outside the device can be improved. A protective component is provided on the outer side of the shell body 1 and at a position corresponding to the heat dissipation through hole 13. The protective component can prevent rainwater or foreign matter from entering the inside of the device through the heat dissipation through hole 13;

[0049] A rubber pad 7 is fixedly connected to the inner bottom of the shell body 1, and a positioning groove is formed at the upper end of the rubber pad 7 for positioning and supporting the solenoid valve.

[0050] Embodiment 2:

[0051] The pipeline electromagnetic equipment protection box provided in Example 1 is further optimized, specifically, as follows: Figure 7 Specifically, the protective grille 18 includes a rain deflector 19, which is arranged obliquely. The lower end of the rain deflector 19 is fixedly connected to the shell body 1 and located at the lower end of the heat dissipation groove Ⅰ12. The number of the rain deflectors 19 is the same as the number of the heat dissipation groove Ⅰ12. The end of the rain deflector 19 is vertically fixedly connected with an end plate 20, and the end plate 20 is fixedly connected to the shell body 1. Through the above structural design, when rainwater enters the interior of the device through the heat dissipation groove Ⅰ12, it is blocked by the rain deflector 19, and the oblique arrangement of the rain deflector 19 can guide the rainwater outward, and the gap between the end of the rain deflector 19 and the shell body 1 can be blocked by the end plate 20.

[0052] Embodiment 3:

[0053] The pipeline electromagnetic equipment protection box provided in Example 1 is further optimized, specifically, as follows: Figure 6 As shown, the protective component includes a dustproof net 14 and a fixing frame 15. The dustproof net 14 is located between the heat dissipation through hole 13 and the fixing frame 15. The end corners of the fixing frame 15 are detachably fixed to the shell body 1 by screws. Furthermore, the protective component also includes a protective cover 17. The protective cover 17 corresponds to the position of the heat dissipation through hole 13. The dustproof net 14 and the fixing frame 15 are both located on the inner side of the protective cover 17. The interior of the protective cover 17 is connected to the interior of the shell body 1 through the heat dissipation through hole 13. An air intake slot is provided at the lower end of the protective cover 17. Through the above structural design, the dustproof net 14 can reduce the dust from entering the device through the heat dissipation through hole 13, the fixing frame 15 can realize the fixation of the dustproof net 14, and the protective cover 17 can realize the protection of the dustproof net 14 and the fixing frame 15.

[0054] On the basis of the above-mentioned embodiments 1 to 3, an automatic purge device is added, which is used to purge the pipeline to prevent the pipeline from being blocked. Semicircular holes are provided on the fixing plate 3 and the fixing plate 4, and the semicircular holes on the fixing plate 3 and the fixing plate 4 are spliced ​​to form a pipe hole, and the pipe hole is installed in the pipe hole, and the pipe is connected to the automatic purge device, and the automatic purge device is located in the shell body cavity, wherein the semicircular holes on the fixing plate 3 and the fixing plate 4, and the upper end of the rubber pad 7 are provided with positioning grooves, and the number and position of the openings are increased, decreased and adjusted according to the number and position of the protective pipelines, which is a conventional technology in the field and will not be repeated here.

[0055] Specifically, please refer to Figure 8-Figure 9 , the automatic purge device specifically includes:

[0056] The valve body 201 is provided with a first pipe connection seat 202, a second pipe connection seat 203, and a third pipe connection seat 204 on the outside of the valve body 201. The first pipe connection seat 202 and the second pipe connection seat 203 are located on the same side of the valve body 201. The first pipe connection seat 202 and the second pipe connection seat 203 are arranged in parallel up and down. The third pipe connection seat 204 is located on the other side of the valve body 201. The third pipe connection seat 204 is located at a height position between the first pipe connection seat 202 and the second pipe connection seat 203. The interior of the valve body 201 is provided with a There is an active cavity 205, the first pipe connection seat 202, the second pipe connection seat 203, and the third pipe connection seat 204 are all connected to the inside of the active cavity 205, and the inside of the active cavity 205 is vertically slidably connected with an electromagnetic active rod 206, and a sealing plug 207 is fixedly connected to the electromagnetic active rod 206. When the electromagnetic active rod 206 moves up, the sealing plug 207 blocks the passage between the first pipe connection seat 202 and the third pipe connection seat 204; when the electromagnetic active rod 206 moves down, the passage between the second pipe connection seat 203 and the third pipe connection seat 204 is blocked.

[0057] The automatic purge device provided by the utility model, through the coordinated design of multiple structures, makes the device able to utilize the displacement function of the electromagnetic valve in the prior art, realize the up and down movement of the electromagnetic movable rod 206, and realize the opening and closing control of the passages between the first pipeline connection seat 202 and the third pipeline connection seat 204, and the second pipeline connection seat 203 and the third pipeline connection seat 204 through the sealing plug 207. When the passage between the first pipeline connection seat 202 and the third pipeline connection seat 204 is opened, the third pipeline connection seat 204 can be purged through an external purge gas source, thereby avoiding the accumulation of sampling medium in the pipeline. In combination with the time relay, regular purge can be realized every day to ensure the smooth flow of instrument pipelines, improve measurement accuracy, and reduce the workload of operators.

[0058] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0059] Embodiment 4:

[0060] Please refer to Figure 8-Figure 9 , an automatic purge device, comprising:

[0061] The valve body 201 is provided with a first pipe connection seat 202, a second pipe connection seat 203, and a third pipe connection seat 204 on the outside of the valve body 201. The first pipe connection seat 202 and the second pipe connection seat 203 are located on the same side of the valve body 201. The first pipe connection seat 202 and the second pipe connection seat 203 are arranged in parallel up and down. The third pipe connection seat 204 is located on the other side of the valve body 201. The third pipe connection seat 204 is located at a height position between the first pipe connection seat 202 and the second pipe connection seat 203. The interior of the valve body 201 is provided with a There is an active cavity 205, the first pipe connection seat 202, the second pipe connection seat 203, and the third pipe connection seat 204 are all connected to the inside of the active cavity 205, and the inside of the active cavity 205 is vertically slidably connected with an electromagnetic active rod 206, and a sealing plug 207 is fixedly connected to the electromagnetic active rod 206. When the electromagnetic active rod 206 moves up, the sealing plug 207 blocks the passage between the first pipe connection seat 202 and the third pipe connection seat 204; when the electromagnetic active rod 206 moves down, the passage between the second pipe connection seat 203 and the third pipe connection seat 204 is blocked.

[0062] It can be known that by utilizing the displacement function of the electromagnetic valve in the prior art, the electromagnetic movable rod 206 can be moved up and down. When in use, the first pipe connecting seat 202 is connected to the external purge gas source sampling tube, the second pipe connecting seat 203 is connected to the external transmitter sampling tube, and the third pipe connecting seat 204 is connected to the external sampling device sampling tube; when the device is powered off, the electromagnetic movable rod 206 is in the upper part and blocks the passage between the first pipe connecting seat 202 and the third pipe connecting seat 204 through the sealing plug 207, so as to maintain the normal connection state between the second pipe connecting seat 203 and the third pipe connecting seat 204, and the thermal control sampling pipeline of the thermal power plant is in a normal measurement state. When the device is powered on, the electromagnetic movable rod 206 moves through the sealing plug 207 to close the passage between the second pipe connection seat 203 and the third pipe connection seat 204, so that the passage between the first pipe connection seat 202 and the third pipe connection seat 204 is opened, and the third pipe connection seat 204 is purged through an external purge gas source, thereby avoiding the accumulation of the sampling medium in the pipeline; after the purge is completed, the power supply of the device is disconnected, and the electromagnetic movable rod 206 drives the sealing plug 207 to reset, and the passage between the first pipe connection seat 202 and the third pipe connection seat 204 is blocked again, so that the passage between the second pipe connection seat 203 and the third pipe connection seat 204 is connected again. The device can be used together with a time relay, so that the timed purge can be realized every day, ensuring the smooth flow of the instrument pipeline and improving the measurement accuracy.

[0063] Embodiment 5:

[0064] The automatic purge device provided in Example 4 is further optimized, specifically, as follows Figure 10-Figure 14As shown, a protective shell is also provided on the outer side of the valve body 201 for protecting the valve body 201 .

[0065] Specifically, the protective shell includes an outer shell 208, there are two outer shells 208, the two outer shells 208 are symmetrically arranged, the two outer shells 208 constitute a shell body, the valve body 201 is located on the inner side of the shell body, the tops of the two outer shells 208 are fixed with semicircular threaded seats 2012, a nut 2013 is arranged above the shell body, the nut 2013 is threadedly connected to the two semicircular threaded seats 2012, a ring 2014 is arranged below the shell body, the ring 2014 is threadedly connected to the lower ends of the two outer shells 208, and a protective net 2015 is fixedly connected to the inner bottom of the ring 2014.

[0066] Furthermore, a buckling strip 2016 is fixed to one side of one shell 208 close to the other shell 208, and a buckling groove 2017 is opened at a position of the other shell 208 corresponding to the buckling strip 2016. The two shells 208 are plugged and connected through the structural matching of the buckling strip 2016 and the buckling groove 2017.

[0067] Furthermore, heat dissipation grooves II 209 are provided on the outer sides of the two outer shells 208, and the heat dissipation grooves II 209 are connected to the inner sides of the outer shells 208. Protective covers 2010 are fixed on the outer sides of the two outer shells 208 and at positions corresponding to the heat dissipation grooves II 209. Exhaust grooves are provided inside the protective covers 2010, and the exhaust ends of the exhaust grooves face downward. Air inlet grooves 2011 are provided on the bottoms of the two outer shells 208.

[0068] Through the above structural design, it can be known that when in use, the two shells 208 are symmetrically fastened on the outside of the valve body 201 through the cooperation of the fastening strip 2016 and the fastening groove 2017. After the two shells 208 are fastened, the nut 2013 is connected to the semicircular threaded seat 2012, so as to fix the tops of the two shells 208, and then the ring 2014 is installed to the bottom of the two shells 208, so as to achieve the connection of the bottoms of the two shells 208; the installation of the protective shell is completed; when the device is in use, the heat generated by the device causes the air inside the protective shell to flow upward, and can be discharged outward through the heat dissipation groove II 209, and the external air with a lower temperature can be allowed to enter the protective shell through the air intake groove 2011, so as to realize the flow of air and achieve the heat dissipation effect, and the heat dissipation groove II 209 can be protected by the protective cover 2010 to prevent rainwater from entering the protective shell.

[0069] Embodiment 6:

[0070] The automatic purge device provided in Example 5 is further optimized, specifically, as follows Figure 8 As shown, an air guide fan II 2018 is also provided on the inner side of the ring 2014.

[0071] Through the above structural design, the buckle strip 2016 is connected to the external power supply, and the buckle strip 2016 can be activated to drive the external air to be transported to the inside of the shell body, and the heat inside the shell body is taken out through the heat dissipation groove II 209 and the protective cover 2010. Through embodiment 6, the shell body 1 and the valve body 201 can achieve two-stage heat dissipation, which can basically prevent the influence of high temperature of thermal power generation, high temperature in summer, and high temperature of ground radiation on electromagnetic components.

Claims

1. A pipeline electromagnetic equipment protection box, characterized in that: include: A shell body (1), wherein an inspection cover (2) is arranged at the upper end of the shell body (1), and a fixing plate (3) and a fixing plate (4) are respectively arranged at the lower ends of both sides of the inspection cover (2) and between the inspection cover (2) and the shell body (1), wherein the fixing plate (3) and the fixing plate (4) are symmetrically arranged up and down, and the inspection cover (2), the fixing plate (3) and the fixing plate (4) are all vertically plug-connected to the shell body (1); A limit rod (5) is vertically fixedly connected at the lower end of the side of the inspection cover (2); the limit rod (5) is plug-connected to the fixing plate (3), the bottom of the fixing plate (4), and the shell body (1), respectively; the connection between the limit rod (5) and the shell body (1) is detachably fixed by a fixing bolt (6); A rubber pad (7) is fixedly connected to the inner bottom of the shell body (1), and a positioning groove is formed at the upper end of the rubber pad (7).

2. The pipeline electromagnetic equipment protection box according to claim 1 is characterized in that: A buckle seat (8), a buckle block (9) and a connecting frame (10) are respectively arranged on the outer sides of the fixing plate (3) and the fixing plate bottom (4); the buckle seat (8) is fixedly connected to the outer lower part of the fixing plate (3); the buckle block (9) is fixedly connected to the outer upper part of the fixing plate bottom (4); the buckle seat (8) and the buckle block (9) are buckled and connected; the connecting frame (10) is arranged at the position of the outer lower part of the fixing plate bottom (4); four fixing screws (11) are arranged at the ends of the connecting frame (10); two fixing screws (11) at the upper ends of the connecting frame (10) are threadedly connected to the fixing plate bottom (4); and two fixing screws (11) at the lower ends of the connecting frame (10) are threadedly connected to the shell body (1).

3. The pipeline electromagnetic equipment protection box according to claim 1 is characterized in that: Both ends of the shell body (1) are provided with a heat dissipation groove I (12) and a heat dissipation hole (13); the heat dissipation groove I (12) I is located at the upper part of the shell body (1); a protective grille (18) is provided on the inner side of the shell body (1) at a position corresponding to the heat dissipation groove I (12); an air guide fan I (16) is fixedly connected to the inner side of the shell body (1) at a position corresponding to the heat dissipation hole (13); and a protective component is provided on the outer side of the shell body (1) at a position corresponding to the heat dissipation hole (13).

4. The pipeline electromagnetic equipment protection box according to claim 3 is characterized in that: The protective grille (18) comprises a rain guide plate (19), the rain guide plate (19) being arranged obliquely, the lower end of the rain guide plate (19) being fixedly connected to the shell body (1) and located at the lower end of the heat dissipation groove I (12), the number of the rain guide plates (19) being the same as the number of the heat dissipation groove I (12), the end of the rain guide plate (19) being vertically fixedly connected to an end plate (20), the end plate (20) being fixedly connected to the shell body (1).

5. The pipeline electromagnetic equipment protection box according to claim 3 is characterized in that: The protective assembly comprises a dustproof net (14) and a fixing frame (15); the dustproof net (14) is located between the heat dissipation through hole (13) and the fixing frame (15); the end corners of the fixing frame (15) are detachably fixed to the shell body (1) by screws.

6. The pipeline electromagnetic equipment protection box according to claim 5 is characterized in that: The protective component further comprises a protective cover (17), wherein the protective cover (17) corresponds to the position of the heat dissipation through hole (13), the dust screen (14) and the fixing frame (15) are both located on the inner side of the protective cover (17), the interior of the protective cover (17) is connected to the interior of the shell body (1) via the heat dissipation through hole (13), and an air intake groove is provided at the lower end of the protective cover (17).

7. The pipeline electromagnetic equipment protection box according to claim 1, characterized in that: Semicircular holes are provided on the fixing plate (3) and the fixing plate bottom (4), and the semicircular holes on the fixing plate (3) and the fixing plate bottom (4) are spliced ​​to form a pipe hole, a pipe is installed in the pipe hole, and the pipe is connected to an automatic purge device, and the automatic purge device comprises a valve body (201), and the outer side of the valve body (201) is respectively provided with a first pipe connection seat (202), a second pipe connection seat (203), and a third pipe connection seat (204), the first pipe connection seat (202) and the second pipe connection seat (203) are located on the same side of the valve body (201), the first pipe connection seat (202) and the second pipe connection seat (203) are arranged in parallel up and down, the third pipe connection seat (204) is located on the other side of the valve body (201), and the third pipe connection seat (204) is located at a height position between the first pipe connection seat (202) and the second pipe connection seat (203). The valve body (201) is provided with an active cavity (205) inside, the first pipe connection seat (202), the second pipe connection seat (203), and the third pipe connection seat (204) are all connected to the inside of the active cavity (205), the inside of the active cavity (205) is vertically slidably connected with an electromagnetic active rod (206), and the electromagnetic active rod (206) is fixedly connected with a sealing plug (207), when the electromagnetic active rod (206) moves upward, the sealing plug (207) blocks the passage between the first pipe connection seat (202) and the third pipe connection seat (204); when the electromagnetic active rod (206) moves downward, the sealing plug (207) blocks the passage between the second pipe connection seat (203) and the third pipe connection seat (204); the first pipe connection seat (202), the second pipe connection seat (203), and the third pipe connection seat (204) are connected to form a purge pipeline through a pipeline.

8. The pipeline electromagnetic equipment protection box according to claim 7, characterized in that: A protective shell is also provided on the outside of the valve body (201) for protecting the valve body (201); the protective shell comprises an outer shell (208); the number of the outer shells (208) is two, the two outer shells (208) are symmetrically arranged, and the two outer shells (208) constitute a shell body; the valve body (201) is located on the inner side of the shell body; the tops of the two outer shells (208) are fixed with semicircular threaded seats (2012); a nut (2013) is provided above the shell body, and the nut (2013) is threadedly connected to the two semicircular threaded seats (2012); a collar (2014) is provided below the shell body, and the collar (2014) is threadedly connected to the lower ends of the two outer shells (208); and a protective net (2015) is fixedly connected to the inner bottom of the collar (2014).

9. The pipeline electromagnetic equipment protection box according to claim 8, characterized in that: A buckling strip (2016) is fixed to a side of one of the shells (208) close to the other shell (208), and a buckling groove (217) is provided at a position of the other shell (208) corresponding to the buckling strip (2016), and the two shells (208) are plug-connected through the structural matching of the buckling strip (2016) and the buckling groove (2017).

10. The pipeline electromagnetic equipment protection box according to claim 9, characterized in that: The outer sides of the two outer shells (208) are provided with heat dissipation grooves II (209), the heat dissipation grooves II (209) are connected to the inner side of the outer shells (208), and protective covers (210) are fixed on the outer sides of the two outer shells (208) and at positions corresponding to the heat dissipation grooves II (209), and the interior of the protective covers (210) is provided with exhaust grooves, and the exhaust ends of the exhaust grooves face downwards, and the bottoms of the two outer shells (208) are provided with air inlet grooves (211), and the inner side of the collar (214) is also provided with an air guide fan II (218).

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