CN211601601U

CN211601601U - Pressure regulating device in furnace

Info

Publication number: CN211601601U
Application number: CN202020142759.4U
Authority: CN
Inventors: 查长清; 贺毅然; 胡怀志; 贺荣
Original assignee: Mountainpeak Technology Co ltd
Current assignee: Mountainpeak Technology Co ltd
Priority date: 2020-01-21
Filing date: 2020-01-21
Publication date: 2020-09-29
Anticipated expiration: 2030-01-21

Abstract

The utility model discloses a pressure adjusting device in a furnace, which relates to the technical field of pressure adjustment in the furnace, and comprises a furnace body, a draught fan, a pressure sensor, a first air nozzle, a coiled pipe and a mounting seat; the induced draft fan is communicated with the interior of the furnace body and used for adjusting the pressure in the furnace body; the mounting seat is arranged on the furnace body, a mounting hole for mounting the air pressure sensor is formed in the mounting seat, a sealing pipe thread is arranged in the mounting hole, a connecting hole communicated with the mounting hole is formed in the side wall of the mounting seat, one end of the coiled pipe is connected with the connecting hole, the other end of the coiled pipe is connected with the first air nozzle, and the first air nozzle penetrates through the furnace body and stretches into the interior of the furnace body. The utility model has the characteristics of avoid baroceptor to be in high temperature environment, improve baroceptor's life for the pressure detection data is more reliable in the stove.

Description

Pressure regulating device in furnace

Technical Field

The utility model relates to a pressure adjustment technical field in the stove, especially a pressure adjustment device in stove.

Background

In industrial production, various high-pressure furnaces are used, for example, in the field of ore processing and manufacturing, and a submerged arc furnace is often used, and the pressure in the submerged arc furnace is a prerequisite for ensuring safe production. With the continuous development of the industrial level and the continuous updating of industrial equipment, currently, the pressure in the furnace is adjusted by matching an induced draft fan with a pressure sensor in the industry.

However, because the temperature in the submerged arc furnace is high, the atmospheric pressure sensor belongs to a high-precision electronic component, and works in a high-temperature environment for a long time, parts are easily damaged, so that measured data is unreliable, and the atmospheric pressure sensor can be directly failed in a serious case, so that the pressure in the furnace cannot be well adjusted according to the measured data of the atmospheric pressure sensor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide one kind and avoid baroceptor to be in high temperature environment, improve baroceptor's life for the more reliable interior pressure adjustment of stove pressure detection data device.

The purpose of the utility model is realized through the following technical scheme:

a pressure adjusting device in a furnace comprises a furnace body, an induced draft fan, a pressure sensor, a first air nozzle, a coiled pipe and a mounting seat; the draught fan is communicated with the interior of the furnace body and used for adjusting the pressure in the furnace body.

The mounting seat is arranged on the furnace body, a mounting hole for mounting the air pressure sensor is formed in the mounting seat, a sealing pipe thread is arranged in the mounting hole, a connecting hole communicated with the mounting hole is formed in the side wall of the mounting seat, one end of the coiled pipe is connected with the connecting hole, the other end of the coiled pipe is connected with the first air nozzle, and the first air nozzle penetrates through the furnace body and stretches into the interior of the furnace body.

Preferably, a filtering device is arranged inside the furnace body and used for filtering gas entering the first air nozzle, the filtering device comprises a bottom box and a top cover, the top cover is fixedly connected with the inner wall of the furnace body, and the bottom box is detachably connected with the top cover.

The bottom box is characterized in that a circle of partition plate is arranged in the middle of the bottom box and divides the interior of the bottom box into a filtering chamber and a pressure measuring chamber, the filtering chamber is filled with filtering pieces, the first air nozzle is communicated with the pressure measuring chamber, and airflow holes are formed in the side wall of the bottom box and the partition plate.

Preferably, the filter element is a sponge.

Preferably, be equipped with on the furnace body can with draught fan combined action's automatic pressure regulating subassembly, the automatic pressure regulating subassembly include with furnace body fixed connection's a pressure regulating section of thick bamboo, a pressure regulating section of thick bamboo has one end open-ended pressure regulating chamber, pressure regulating section of thick bamboo lateral wall is equipped with the intercommunication the pressure release hole and the inlet port in pressure regulating chamber, the inlet port is connected the inside second air cock of furnace body.

The opening part fixedly connected with end cover in pressure regulating chamber, the pressure regulating intracavity is equipped with the piston, one side fixedly connected with of piston adjusts the pole, it keeps away from to adjust the pole the one end of piston with end cover sliding connection, the cover is equipped with the spring on adjusting the pole, the one end of spring with the end cover butt, the other end of spring with the piston butt, the piston is in the position in the pressure regulating intracavity is used for control opening or closing of pressure release hole.

Preferably, the end cover is provided with a limiting boss protruding towards the interior of the pressure regulating cavity.

Preferably, the furnace body, with second air cock contact department is equipped with first seal groove, be equipped with first sealed pad in the first seal groove.

Preferably, the furnace body is fixedly connected with a supporting block for supporting the coiled pipe.

Preferably, a second sealing groove is formed in the furnace body at the position where the furnace body is in contact with the first air nozzle, and a second sealing gasket is arranged in the second sealing groove; and a third sealing groove is arranged at the contact position of the connecting pipe of the draught fan, and a third sealing gasket is arranged in the third sealing groove.

The utility model has the advantages of it is following: the utility model discloses be provided with the coiled pipe, the one end of coiled pipe is connected with installation baroceptor's mount pad, the other end and the inside first air cock intercommunication of intercommunication furnace body of coiled pipe, make the high-temperature gas that awaits measuring get into the mount pad through the air cock after getting into the coiled pipe again and measure through baroceptor, because the coiled pipe route is tortuous, and the coiled pipe is in the furnace body outside, external temperature is far less than furnace temperature, the high-temperature gas that awaits measuring can be cooled off through the coiled pipe, temperature greatly reduced, baroceptor has been avoided being in high temperature environment, the life of baroceptor has been improved, make the interior pressure detection data of furnace more reliable simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a cross-sectional view of a furnace internal pressure regulating device provided by the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is a view from the direction B of FIG. 1;

FIG. 4 is a cross-sectional view of the mount;

FIG. 5 is a schematic structural view of the bottom case;

in the figure: 1-furnace body, 101-first sealing gasket, 102-second sealing gasket, 103-third sealing gasket, 2-induced draft fan, 3-air pressure sensor, 4-first air nozzle, 5-coiled pipe, 6-mounting seat, 601-mounting hole, 602-connecting hole, 7-filtering device, 701-bottom box, 702-top cover, 703-partition plate, 704-filtering chamber, 705-pressure measuring chamber, 706-filtering member, 707-air flow hole, 8-automatic pressure regulating component, 801-pressure regulating cylinder, 801 a-pressure regulating chamber, 801 b-pressure relief hole, 802-second air nozzle, 803-end cover, 803 a-limit boss, 804-piston, 805-regulating rod, 806-spring and 9-supporting block.

Detailed Description

The technical solution in the embodiments of the present application is described below with reference to the drawings in the embodiments of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

As shown in fig. 1-5, a device for regulating pressure in a furnace comprises a furnace body 1, an induced draft fan 2, an air pressure sensor 3, a first air nozzle 4, a coiled pipe 5 and a mounting seat 6.

In this embodiment, the mounting base 6 is arranged on the furnace body 1, the mounting hole 601 for mounting the air pressure sensor 3 is arranged in the mounting base 6, the mounting hole 601 is provided with a sealing pipe thread, and the air pressure sensor 3 and the mounting hole 601 are mounted through the sealing pipe thread, so that the air tightness is good, and air leakage is prevented. The lateral wall of the mounting seat 6 is provided with a connecting hole 602 communicated with the mounting hole 601, one end of the coiled pipe 5 is connected with the connecting hole 602, the other end of the coiled pipe 5 is connected with the first air nozzle 4, and the first air nozzle 4 penetrates through the furnace body 1 and extends into the furnace body 1. In this embodiment, the mounting seat 6 can be directly placed on the top of the furnace body 1, and can also be fixed to the furnace body 1 by means of screws, etc., the coiled pipe 5 can be connected to the connection hole 602 by means of a sealing pipe, and the coiled pipe 5 can be selectively welded to the first air nozzle 4.

It is worth explaining, so set up for the high temperature gas that awaits measuring gets into mount pad 6 again after coiled pipe 5 through the air cock and measures through baroceptor 3, because coiled pipe 5 route is tortuous, and coiled pipe 5 is in furnace body 1 outside moreover, and external temperature is far less than the stove internal temperature, and the high temperature gas that awaits measuring can be cooled off through coiled pipe 5, and temperature greatly reduced has avoided baroceptor 3 to be in high temperature environment, has improved baroceptor 3's life, makes the interior pressure detection data of stove more reliable simultaneously.

In this embodiment, the furnace body 1 is fixedly connected with the supporting block 9 for supporting the coiled pipe 5, so that the contact area of the bottom of the coiled pipe 5 is reduced, which is convenient for the coiled pipe 5 to radiate heat better, and preferably, the fixed connection mode can be welding or screw connection.

Since the gas inside the furnace body 1 has a high temperature and usually contains a large amount of smoke, in this embodiment, the inner wall of the furnace body 1 is further provided with a filtering device 7 for filtering the gas entering the first air nozzle 4. Specifically, the filtering device 7 comprises a bottom box 701 and a top cover 702, the top cover 702 is fixedly connected with the inner wall of the furnace body 1, the fixed connection mode can be welding or screw connection, and the bottom box 701 is detachably connected with the top cover 702.

It should be noted that in this embodiment, the bottom case 701 is in a cylindrical shape, the top cover 702 is in a cylindrical shape, and the bottom case 701 and the top cover 702 are connected by a screw thread. In other embodiments of the present invention, the bottom case 701 may also be a rectangular structure, the top cover 702 is a rectangular structure matched with the bottom case, and the top cover 702 and the bottom case 701 are connected by a side screw.

In this embodiment, a circle of partition plate 703 is disposed in the middle of the bottom case 701 to divide the inside of the bottom case 701 into a filter chamber 704 and a pressure measuring chamber 705, the filter chamber 704 is filled with a filter element 706, the first air nozzle 4 is communicated with the pressure measuring chamber 705, and airflow holes 707 are disposed on the side wall of the bottom case 701 and the partition plate 703, it should be noted that, during assembly, the top cover 702 is pressed against the top of the partition plate 703 to force the gas in the furnace to enter the filter chamber 704 from the airflow hole 707 on the side wall of the bottom case 701 first and to enter the pressure measuring chamber 705 from the airflow hole 707 on the partition plate 703 after passing through the filter element 706.

In this embodiment, in order to achieve good sealing, a first sealing groove is formed in the furnace body 1 at a contact position with the second air nozzle 802, and a first sealing gasket 101 is arranged in the first sealing groove; a second sealing groove is formed in the position where the first air nozzle 4 is contacted, and a second sealing gasket 102 is arranged in the second sealing groove; and a third sealing groove is formed in the contact position of the third sealing groove and the connecting pipe of the draught fan 2, and a third sealing gasket 103 is arranged in the third sealing groove.

In this embodiment, draught

fan

2 and 1 inside intercommunication of furnace body, when the sensor detected the stove internal pressure and was too high, can open draught fan 2 and step down in to the stove, reach the safe value then close draught fan 2.

In the embodiment, the furnace body 1 is provided with an automatic pressure regulating assembly 8 which can act together with the induced draft fan 2, the automatic pressure regulating assembly 8 comprises a pressure regulating cylinder 801 fixedly connected with the furnace body 1, and the fixed connection mode can be welding or screw connection; the pressure regulating cylinder 801 is provided with a pressure regulating cavity 801a with one end opened, the side wall of the pressure regulating cylinder 801 is provided with a pressure relief hole 801b and an air inlet hole which are communicated with the pressure regulating cavity 801a, and the air inlet hole is connected with a second air nozzle 802 connected with the interior of the furnace body 1.

An end cover 803 is fixedly connected to an opening of the pressure regulating cavity 801a, a piston 804 is arranged in the pressure regulating cavity 801a, and the position of the piston 804 in the pressure regulating cavity 801a is used for controlling the opening or closing of the pressure relief hole 801 b. An adjusting rod 805 is fixedly connected to one side of the piston 804, one end of the adjusting rod 805, which is far away from the piston 804, is slidably connected to the end cover 803, specifically, a sliding hole is formed in the end cover 803, and the adjusting rod 805 is inserted into the sliding hole. A spring 806 is fitted over the adjustment rod 805, one end of the spring 806 abutting the end cap 803, and the other end of the spring 806 abutting the piston 804.

In this embodiment, the end cap 803 is provided with a limit boss 803a protruding toward the interior of the pressure regulating cavity 801a to limit the position of the piston 804 and prevent the spring 806 from being compressed excessively and failing.

When the furnace body 1 is used, when the internal pressure of the furnace body 1 rises, the spring 806 is forced to be compressed by air pressure, so that the pressure relief hole 801b is opened, and the gas in the furnace is discharged through the pressure relief hole 801b, so that the pressure in the furnace is reduced; when the internal pressure of the furnace body 1 decreases, the spring 806 is restored to close the pressure release hole 801 b. Generally speaking, when automatic pressure regulating subassembly 8 can satisfy pressure regulation, can not use draught fan 2, detect the stove internal pressure too high when baroceptor 3, when automatic pressure regulating subassembly 8 can not satisfy the pressure release speed, can open draught fan 2 for the pressure release, guarantee safety in production.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A pressure adjusting device in a furnace is characterized in that: comprises a furnace body (1), an induced draft fan (2), an air pressure sensor (3), a first air nozzle (4), a coiled pipe (5) and a mounting seat (6); the induced draft fan (2) is communicated with the interior of the furnace body (1) and is used for adjusting the pressure in the furnace body (1);

mount pad (6) set up on furnace body (1), be equipped with in mount pad (6) and be used for the installation mounting hole (601) of baroceptor (3), mounting hole (601) are equipped with sealed pipe thread, mount pad (6) lateral wall is equipped with the intercommunication connecting hole (602) of mounting hole (601), the one end of coiled pipe (5) with connecting hole (602) are connected, the other end of coiled pipe (5) with first air cock (4) are connected, first air cock (4) are worn to locate just stretch into on furnace body (1) is inside.

2. The apparatus for adjusting pressure in a furnace according to claim 1, wherein: the furnace body (1) is internally provided with a filtering device (7) for filtering gas entering the first air nozzle (4), the filtering device (7) comprises a bottom box (701) and a top cover (702), the top cover (702) is fixedly connected with the inner wall of the furnace body (1), and the bottom box (701) is detachably connected with the top cover (702);

the middle part of the bottom box (701) is provided with a circle of partition plates (703) to divide the inside of the bottom box (701) into a filter chamber (704) and a pressure measuring chamber (705), the filter chamber (704) is filled with filter pieces (706), the first air nozzle (4) is communicated with the pressure measuring chamber (705), and the side wall of the bottom box (701) and the partition plates (703) are provided with air flow holes (707).

3. The apparatus for adjusting pressure in a furnace according to claim 2, wherein: the filter element (706) is a sponge.

4. The apparatus for adjusting pressure in a furnace according to claim 1, wherein: an automatic pressure regulating assembly (8) which can act together with the draught fan (2) is arranged on the furnace body (1), the automatic pressure regulating assembly (8) comprises a pressure regulating barrel (801) fixedly connected with the furnace body (1), the pressure regulating barrel (801) is provided with a pressure regulating cavity (801a) with one open end, a pressure relief hole (801b) and an air inlet hole which are communicated with the pressure regulating cavity (801a) are formed in the side wall of the pressure regulating barrel (801), and the air inlet hole is connected with a second air nozzle (802) connected with the inside of the furnace body (1);

the opening of pressure regulating chamber (801a) is fixedly connected with end cover (803), be equipped with piston (804) in pressure regulating chamber (801a), one side fixedly connected with regulation pole (805) of piston (804), the one end of adjusting pole (805) keeping away from piston (804) with end cover (803) sliding connection, the cover is equipped with spring (806) on adjusting pole (805), the one end of spring (806) with end cover (803) butt, the other end of spring (806) with piston (804) butt, piston (804) are in the position in pressure regulating chamber (801a) is used for controlling opening or closing of pressure release hole (801 b).

5. The apparatus for adjusting pressure in a furnace according to claim 4, wherein: and the end cover (803) is provided with a limiting boss (803a) protruding towards the interior of the pressure regulating cavity (801 a).

6. The apparatus for adjusting pressure in a furnace according to claim 4, wherein: on the furnace body (1), with second air cock (802) contact department is equipped with first seal groove, be equipped with first sealed pad (101) in the first seal groove.

7. The apparatus for adjusting pressure in a furnace according to claim 1, wherein: and the furnace body (1) is fixedly connected with a supporting block (9) for supporting the coiled pipe (5).

8. The apparatus for adjusting pressure in a furnace according to claim 1, wherein: a second sealing groove is formed in the furnace body (1) at the contact position of the furnace body and the first air nozzle (4), and a second sealing gasket (102) is arranged in the second sealing groove; and a third sealing groove is formed in the contact position of the connecting pipe of the draught fan (2), and a third sealing gasket (103) is arranged in the third sealing groove.