Dew point monitoring device for nitrogen heater

Abstract

The utility model relates to the technical field of nitrogen heaters, in particular to a dew point monitoring device for a nitrogen heater, which comprises a pipe body and a gas outlet pipe arranged at the top end of the pipe body, a gas conveying pipe is arranged at the top end of the gas outlet pipe, one end of the gas conveying pipe is communicated with a drying tower, and the top end of the drying tower is communicated with an exhaust pipe. Ball valves are arranged on the inner wall of the gas conveying pipe and the inner wall of the exhaust pipe, the inner wall of the exhaust pipe is communicated with a sampling pipe, an electromagnetic valve is arranged on the inner wall of the sampling pipe, a monitoring mechanism is arranged between the gas outlet pipe and the gas conveying pipe, and two pressure equalizing regulating valves are arranged on the inner wall of the gas conveying pipe. By arranging the sampling pipe and the electromagnetic valve, the device can be used for manually analyzing the dew point of outlet gas, online monitoring of the dew point of regenerated nitrogen can be achieved by arranging the monitoring mechanism, and by arranging the two pressure equalizing regulating valves, remote switching of the drying tower can be achieved, pressure fluctuation of a drying system during switching is avoided, and stable pressure transition is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to nitrogen heater technical field, concretely is a dew point monitoring device for nitrogen heater. BACKGROUND

[0002] The nitrogen heater is a kind of equipment specially used to heat nitrogen to the required temperature. It is widely used in various industrial fields, such as electronics, semiconductors, petrochemical industry, aerospace, etc., and the main purposes include removing moisture in materials, improving the efficiency of the process and providing high-temperature environment for specific applications. The nitrogen heater usually uses resistance heating elements or infrared heating elements to heat nitrogen. When electric current passes through these heating elements, heat is generated, which heats the surrounding nitrogen to the set temperature. The drying tower is a device used to remove water or other volatile substances from gas or liquid. The working principle of the drying tower is usually to use heat energy and air flow to evaporate and remove the moisture in the material, so as to achieve the purpose of drying.

[0003] The existing nitrogen heater outlet has no dew point monitor, which cannot detect whether there is nitrogen leakage at the outlet of the heater in real time. At the same time, during operation, the drying tower switching cannot be realized by remote control, and manual switching by using field hand valve is required. High-concentration hydrogen sulfide gas is easy to leak from the valve packing, and the on-site personnel have high risk and heavy workload. During the switching of the drying tower, the on-site personnel use hand valve to equalize pressure, which is easy to cause pressure fluctuation of the drying tower during equalization, resulting in fluctuation of hydrogen sulfide delivery amount, affecting the stability of mercaptan synthesis load, and there is no analysis sampling point at the outlet of the drying tower, which cannot judge the regeneration effect of the drying tower and the running state of the molecular sieve, and cannot collect the running data of the molecular sieve. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a dew point monitoring device for nitrogen heater to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a dew point monitoring device for nitrogen heater, comprising a pipe body, further comprising:

[0006] An air outlet pipe is arranged at the top end of the pipe body, the top end of the air outlet pipe is provided with a gas conveying pipe, one end of the gas conveying pipe is communicated with a drying tower, the top end of the drying tower is communicated with an exhaust pipe, the inner walls of the gas conveying pipe and the exhaust pipe are both provided with a ball valve, the inner wall of the exhaust pipe is communicated with a sampling pipe, the inner wall of the sampling pipe is provided with an electromagnetic valve, a monitoring mechanism for real-time detection of internal leakage is arranged between the air outlet pipe and the gas conveying pipe, and two pressure equalization regulating valves for realizing smooth pressure transition are arranged on the inner wall of the gas conveying pipe.

[0007] Preferably, the monitoring mechanism comprises a flange arranged between the gas outlet pipe and the gas conveying pipe, an inner wall of the flange is provided with a first assembly, and the inner wall of the flange is respectively provided with a sealing groove and a sealing ring.

[0008] Preferably, the outer side of the flange is sleeved with two symmetrical protective covers, the inner wall of each of the two protective covers is fixed with a monitor, and the inner wall of the protective cover is provided with a second assembly.

[0009] Preferably, one side of the pipe body is communicated with a gas inlet pipe, and the inner wall of the pipe body is fixed with a heat preservation pipe.

[0010] Preferably, the inner wall of the heat preservation pipe is fixed with six guide plates, and the inner wall of the guide plate is fixed with an electric heating pipe.

[0011] Preferably, one side of the pipe body is provided with a mounting plate, and one side of the mounting plate is provided with a fixing box.

[0012] Preferably, the bottom of the pipe body is fixed with two symmetrical supporting seats, and the inner wall of the supporting seat is provided with a through hole.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] The ball valve arranged in the gas conveying pipe and the gas outlet pipe can eliminate the leakage phenomenon of the on-off valve, completely improve the leakage of the on-off valve at the inlet and outlet of the drying tower, better ensure the regeneration effect, the sampling pipe and the electromagnetic valve arranged in the gas outlet pipe can be used for manually analyzing the outlet gas dew point, the present application changes the present situation that the outlet gas dew point of the drying tower cannot be detected, provides data support for analyzing and judging the regeneration effect and the running state of the molecular sieve, the monitoring mechanism can realize online monitoring of the regeneration nitrogen dew point, the two pressure equalizing valves arranged in the gas conveying pipe can realize remote switching of the drying tower, avoid pressure fluctuation of the drying system during switching, and realize stable pressure transition. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure schematic view of a preferred embodiment of the dew point monitoring device for the nitrogen heater provided by the present application;

[0016] Figure 2 A structure schematic view of the inside of the pipe body provided by the present application;

[0017] Figure 3 A structure schematic view of the monitoring mechanism provided by the present application;

[0018] Figure 4 A structure schematic view of the flange connection provided by the present application;

[0019] Figure 5 For Figure 1An enlarged structural schematic view at point A in the middle;

[0020] Figure 6 For Figure 1 An enlarged structural schematic view at point B in the middle.

[0021] In the figure: 1, pipe body; 2, gas outlet pipe; 3, gas conveying pipe; 4, drying tower; 5, exhaust pipe; 6, ball valve; 7, sampling pipe; 8, electromagnetic valve; 9, monitoring mechanism; 91, flange; 92, first assembly; 93, sealing groove; 94, sealing ring; 95, protective cover; 96, monitor; 97, second assembly; 10, pressure equalizing regulating valve; 11, gas inlet pipe; 12, heat preservation pipe; 13, flow guide plate; 14, electric heating pipe; 15, mounting plate; 16, fixing box; 17, support seat; 18, through hole. DETAILED DESCRIPTION

[0022] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific implementation, structure, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0023] Please refer to Figures 1-6 As shown in the figure, a dew point monitoring device for a nitrogen heater, comprising a pipe body 1, which can heat nitrogen by being provided; further comprising a gas outlet pipe 2 provided at the top end of the pipe body 1, which can facilitate the discharge of heated nitrogen by being provided; the top end of the gas outlet pipe 2 is provided with a gas conveying pipe 3, which can facilitate the conveying of nitrogen by being provided; one end of the gas conveying pipe 3 is communicated with a drying tower 4, which can facilitate the drying of materials by being provided; the top end of the drying tower 4 is communicated with an exhaust pipe 5, which can facilitate the discharge of exhaust gas by being provided; the inner walls of the gas conveying pipe 3 and the exhaust pipe 5 are both provided with ball valves 6, which can eliminate the phenomenon of internal leakage of on-off valves, completely improve the internal leakage of on-off valves at the inlet and outlet of the drying tower 4, and better ensure the regeneration effect; the inner wall of the exhaust pipe 5 is communicated with a sampling pipe 7, and the inner wall of the sampling pipe 7 is provided with an electromagnetic valve 8, which can be used for manual analysis of the outlet gas dew point, change the current situation that the outlet gas dew point of the drying tower 4 cannot be detected, and provide data support for analyzing and judging the regeneration effect and operating state of the molecular sieve; a monitoring mechanism 9 for real-time detection of internal leakage is arranged between the gas outlet pipe 2 and the gas conveying pipe 3, which can realize online monitoring of the regeneration nitrogen dew point by being provided; two pressure equalizing regulating valves 10 for realizing smooth transition of pressure are arranged on the inner wall of the gas conveying pipe 3, which can realize remote switching of the drying tower 4, avoid pressure fluctuation of the drying system during switching, and realize smooth transition of pressure.

[0024] Please refer to Figure 2 , Figure 3 and Figure 4As shown, the monitoring mechanism 9 comprises a flange 91 arranged between the gas outlet pipe 2 and the gas conveying pipe 3, the flange 91 is arranged to connect the gas outlet pipe 2 and the gas conveying pipe 3; the inner wall of the flange 91 is provided with a first assembly 92, the first assembly 92 is arranged to install and remove the flange 91; the inner part of the flange 91 is provided with a sealing groove 93 and a sealing ring 94, the sealing groove 93 and the sealing ring 94 are arranged to improve the sealing performance of the flange 91 when connected, preventing nitrogen leakage; the outer side of the flange 91 is sleeved with two symmetrical protective covers 95, the protective covers 95 are arranged to protect the connected flange 91, and the monitor 96 can be installed; the inner wall of the two protective covers 95 is fixed with the monitor 96, the monitor 96 is arranged to monitor the dew point of the regenerated nitrogen online; the inner wall of the protective cover 95 is provided with a second assembly 97, the second assembly 97 is arranged to facilitate the connection and fixation between the two protective covers 95, and facilitate disassembly.

[0025] Please refer to Figure 1 、 Figure 2 、 Figure 5 and Figure 6 As shown, the pipe body 1 is communicated with an air inlet pipe 11 on one side, the air inlet pipe 11 is arranged to facilitate the nitrogen entering the pipe body 1 for heating; the inner wall of the pipe body 1 is fixed with a heat preservation pipe 12, the heat preservation pipe 12 is arranged to improve the heating effect in the pipe body 1; the inner wall of the heat preservation pipe 12 is fixed with six flow guides 13, the flow guides 13 are arranged to facilitate the flow guide for nitrogen, improve the durability of the pipe body 1; the inner wall of the flow guide 13 is fixed with an electric heating pipe 14, the electric heating pipe 14 is arranged to heat the nitrogen; the pipe body 1 is provided with a mounting plate 15 on one side, the mounting plate 15 is provided with a fixed box 16 on one side, the mounting plate 15 and the fixed box 16 are arranged to facilitate the installation of the pipe body 1; the bottom of the pipe body 1 is fixed with two symmetrical support seats 17, the inner wall of the support seat 17 is provided with a through hole 18, the support seat 17 and the through hole 18 are arranged to facilitate the installation and fixation of the pipe body 1.

[0026] Working principle: the worker installs and fixes the pipe body 1 through the supporting seat 17 and the through hole 18, transports nitrogen into the pipe body 1 through the inlet pipe 11, heats and treats nitrogen through the electric heating pipe 14, discharges the heated nitrogen through the outlet pipe 2, the top of the outlet pipe 2 is connected with the gas conveying pipe 3 through the flange 91, the flange 91 is installed and fixed through the first assembly 92, the flange 91 is sleeved with the protective cover 95 outside, the protective cover 95 is installed and fixed through the second assembly 97, the first assembly 92 and the second assembly 97 are both composed of bolts and nuts, the monitor 96 is arranged in the protective cover 95 and can monitor the online dew point of the regenerated nitrogen, the heated nitrogen enters the drying tower 4 through the gas conveying pipe 3, dries the materials in the drying tower 4, finally the waste gas is discharged through the exhaust pipe 5, the inner walls of the gas conveying pipe 3 and the exhaust pipe 5 are both provided with the ball valve 6, which can eliminate the leakage phenomenon of the on-off valve, completely improve the leakage of the on-off valve at the inlet and outlet of the drying tower 4, better ensure the regeneration effect, the inner wall of the exhaust pipe 5 is communicated with the sampling pipe 7, the inner wall of the sampling pipe 7 is provided with the electromagnetic valve 8, the sampling pipe 7 and the electromagnetic valve 8 can be used for manual analysis of the outlet gas dew point, change the present situation that the outlet gas dew point of the drying tower 4 cannot be detected, provide data support for analyzing and judging the regeneration effect and the running state of the molecular sieve, the inner wall of the gas conveying pipe 3 is provided with two pressure equalizing regulating valves 10 for realizing pressure smooth transition, which can realize remote switching of the drying tower 4, avoid pressure fluctuation of the drying system when switching, realize pressure smooth transition.

[0027] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change and modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the present application.

Claims

1. A dew point monitoring device for a nitrogen heater comprising a tube body (1), characterized in that, Also include: The top end of the pipe body (1) is provided with a gas outlet pipe (2), the top end of the gas outlet pipe (2) is provided with a gas pipe (3), one end of the gas pipe (3) is communicated with a drying tower (4), the top end of the drying tower (4) is communicated with an exhaust pipe (5), the inner wall of the gas pipe (3) and the exhaust pipe (5) is provided with a ball valve (6), the inner wall of the exhaust pipe (5) is communicated with a sampling pipe (7), the inner wall of the sampling pipe (7) is provided with a solenoid valve (8), the gas outlet pipe (2) and the gas pipe (3) are provided with a monitoring mechanism (9) for detecting whether the internal leakage in real time, the inner wall of the gas pipe (3) is provided with two pressure equalizing valves (10) for realizing pressure smooth transition.

2. A dew point monitoring device for a nitrogen heater as claimed in claim 1, characterized in that: The monitoring mechanism (9) includes a flange (91) arranged between the gas outlet pipe (2) and the gas pipe (3), the inner wall of the flange (91) is provided with a first assembly (92), the inner wall of the flange (91) is respectively provided with a sealing groove (93) and a sealing ring (94).

3. A dew point monitoring device for a nitrogen heater as claimed in claim 2, characterized in that: The outer side of the flange (91) is sleeved with two symmetrical protective covers (95), the inner wall of the two protective covers (95) is fixed with a monitor (96), the inner wall of the protective cover (95) is provided with a second assembly (97).

4. A dew point monitoring device for a nitrogen heater as defined in claim 1, characterized in that: One side of the pipe body (1) is communicated with an air inlet pipe (11), the inner wall of the pipe body (1) is fixed with a heat preservation pipe (12).

5. A dew point monitoring device for a nitrogen heater as claimed in claim 4, characterized in that: The inner wall of the heat preservation pipe (12) is fixed with six guide plates (13), the inner wall of the guide plate (13) is fixed with an electric heating pipe (14).

6. A dew point monitoring device for a nitrogen heater as defined in claim 1, characterized in that: One side of the pipe body (1) is provided with a mounting plate (15), one side of the mounting plate (15) is provided with a fixed box (16).

7. A dew point monitoring device for a nitrogen heater as defined in claim 1, characterized in that: The bottom of the pipe body (1) is fixed with two symmetrical supporting seats (17), the inner wall of the supporting seat (17) is provided with a through hole (18).

Images