CN216820512U - Nitrogen explosion-proof electric heater with safety protection device - Google Patents
Nitrogen explosion-proof electric heater with safety protection device Download PDFInfo
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- CN216820512U CN216820512U CN202220532262.2U CN202220532262U CN216820512U CN 216820512 U CN216820512 U CN 216820512U CN 202220532262 U CN202220532262 U CN 202220532262U CN 216820512 U CN216820512 U CN 216820512U
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Abstract
The utility model relates to a nitrogen anti-explosion electric heater with a safety protection device, belongs to the technical field of electric heating, and solves the problems that when the temperature of an electric heating rod is abnormally increased in the existing electric heating technology, a light person causes the electric heater to be damaged, and a heavy person can have fire and explosion accidents; this scheme includes interior heating element and outer control element, interior heating element includes heating tube, be provided with connecting pipe and check valve on heating tube's the tube cap a, the outside of connecting pipe is provided with the solenoid valve, end-to-end connection has the nitrogen gas jar, the inlet end of check valve is connected with the air pump, exhaust end and heating tube intercommunication, be provided with the relief valve on heating tube's the tube cap b, outer control element includes the cover shell of screw assembly outside heating tube, the connecting hole has been seted up to the tip of cover shell, the drill way of connecting hole is provided with the shell of a tube, sliding sleeve has the slide in the shell of a tube, be provided with contact a at the bottom of the chamber of shell of a tube, the side of slide is provided with contact b.
Description
Technical Field
The utility model relates to the technical field of electric heating, in particular to a nitrogen explosion-proof electric heater with a safety protection device.
Background
In the existing electric heating technology, generally, a spiral sheet is arranged outside an electric heating rod, so that the contact area between air and the electric heating rod is increased, and heat is transferred to the air through heat exchange.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems mentioned in the background, the utility model provides a nitrogen explosion-proof electric heater with a safety protection device.
In order to achieve the technical purpose, the technical scheme adopted by the utility model is as follows.
The utility model provides a take explosion-proof electric heater of safety arrangement nitrogen gas, includes interior heating element and outer monitoring element, interior heating element is used for carrying out heating operation, and outer monitoring element is used for heating element's heating temperature in the real time monitoring to triggering when heating element takes place unusual intensification including, cooling and the processing of opening circuit to interior heating element.
As a further improvement of the utility model, the internal heating element comprises a heating pipeline, one pipe orifice of the heating pipeline is provided with a pipe cover a, the other pipe orifice of the heating pipeline is provided with a pipe cover b, the pipe cover a is provided with an air inlet, the pipe cover b is provided with an air outlet, the pipe wall of the heating pipeline is provided with a support, and the support is provided with an electric heating rod in a threaded manner.
As a further improvement of the utility model, a connecting pipe and a one-way valve which are communicated with the heating pipeline are arranged on the pipe cover a, an electromagnetic valve is arranged outside the connecting pipe, the tail end of the connecting pipe is connected with a nitrogen tank, the one-way valve is used for enabling air to flow into the heating pipeline from the outside in a one-way manner, the air inlet end of the one-way valve is connected with an air pump, and the air outlet end of the one-way valve is communicated with the heating pipeline;
and a pressure release valve is arranged on the pipe cover b.
As a further improvement of the utility model, the outer monitoring element comprises a casing, the casing is assembled on the outer part of the heating pipeline in a threaded mode, and the inner wall of the casing, the support and the pipe wall of the heating pipeline are all made of heat conducting materials.
As a further improvement of the utility model, the end part of the casing is provided with a connecting hole, the orifice of the connecting hole is provided with a cylinder shell, one end of the cylinder shell is opened and communicated with the connecting hole, the other end of the cylinder shell is closed and provided with an air hole, a sliding plate is sleeved in the cylinder shell in a sliding way, and a spring positioned between the cavity bottom and the sliding plate is also arranged in the cylinder shell.
As a further improvement of the utility model, the cavity bottom of the cylinder shell is provided with a contact piece a, and the side surface of the sliding plate facing the cylinder shell is provided with a contact piece b.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the scheme, the temperature of the electric heating rod in the inner heating element is monitored in real time through the outer monitoring element, when the temperature of the electric heating rod rises abnormally, the outer monitoring element is triggered to send a signal, on one hand, nitrogen enters the inner heating element to cool the electric heating rod, on the other hand, the signal is sent to the controller to break a circuit, and the nitrogen and the electric heating rod are matched to respond in time, so that the safety of the electric heater is greatly improved;
2. when the temperature of the external monitoring element induction electric heating rod rises abnormally, a signal is sent out to open the electromagnetic valve and the air pump: a. the air pump conveys air into the heating pipeline to form an air flow; b. the nitrogen tank conveys nitrogen into the heating pipeline through a connecting pipe and an electromagnetic valve, and the interior of the heating pipeline is cooled; the air flow in the step a drives the nitrogen in the step b to flow rapidly, so that the cooling process is accelerated, the cooling effect is improved, and meanwhile, the hot air in the heating pipeline is discharged through the pressure release valve;
3. in the time that the temperature of the electric heating rod is abnormally increased to the time that the trigger switch is closed to send a signal, the air in the heating pipeline is thermally expanded to increase the pressure intensity and exceed the threshold value of the pressure release valve, so that the pressure release valve is opened, part of hot air in the heating pipeline is discharged, and the extrusion of the hot air received by the heating pipeline is slowed down.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a first exploded view of the present invention;
FIG. 3 is a second exploded view of the present invention;
FIG. 4 is an exploded view of the inner heating element;
FIG. 5 is an exploded view of the outer monitoring element;
fig. 6 is a schematic view of the interior of the case when viewed in cross-section.
The reference numbers in the drawings are:
1. an inner heating element; 101. heating the pipeline; 102. a connecting pipe; 103. an electromagnetic valve; 104. a one-way valve; 105. a pressure relief valve; 106. a support; 107. an electric heating rod;
2. an external monitoring element; 201. a housing; 202. connecting holes; 203. a cartridge housing; 204. a slide plate; 205. a spring; 206. a contact piece a; 207. a contact piece b; 208. and (4) air holes.
Detailed Description
To further illustrate the technical means and effects of the present invention for achieving the intended purpose of the utility model, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1-6, an explosion-proof electric heater with a safety protection device for nitrogen comprises an inner heating element 1 and an outer monitoring element 2, wherein the inner heating element 1 is used for heating, and the outer monitoring element 2 is used for monitoring the heating temperature of the inner heating element 1 in real time and is triggered when the inner heating element 1 abnormally increases the temperature, so as to cool and break the inner heating element 1.
In the existing electric heating technology, generally, a spiral sheet is arranged outside an electric heating rod 107, the contact area between air and the electric heating rod 107 is increased, and heat is conducted to the air through heat exchange, however, when the problems of blockage and the like of an air inlet and an air outlet of an electric heater or other problems causing unsmooth air circulation occur, the temperature of the electric heating rod 107 in the electric heater can be rapidly increased, at the moment, a light person causes the electric heater to be damaged, and a heavy person causes an ignition explosion accident.
In this scheme, through the temperature of the electrical bar 107 in the interior heating element 1 of outer monitoring element 2 real time monitoring, when the temperature of electrical bar 107 took place unusually to rise, outer monitoring element 2 was triggered the signals, on the one hand, in making nitrogen gas enter into interior heating element 1, cooled down the processing to electrical bar 107, on the other hand, the signals made the circuit open circuit for the controller, both cooperations in time made the correspondence, improved electric heater's security greatly.
As shown in fig. 2-4, the inner heating element 1 includes a heating pipeline 101, a pipe cover a is disposed at one pipe opening of the heating pipeline 101, a pipe cover b is disposed at the other pipe opening, an air inlet is disposed on the pipe cover a, and an air outlet is disposed on the pipe cover b.
The pipe cover a is provided with a connecting pipe 102 and a check valve 104 which are communicated with the heating pipeline 101, wherein the outside of the connecting pipe 102 is provided with an electromagnetic valve 103, the tail end of the connecting pipe 102 is communicated with equipment for supplying nitrogen gas such as a nitrogen gas tank, the electromagnetic valve 103 can be realized by the prior art, the check valve 104 is used for enabling air to flow into the heating pipeline 101 from the outside in a one-way manner, the structure of the conventional check valve consisting of a valve pipe, a valve ball and a spring can be realized, the air inlet end of the check valve 104 is communicated with the equipment for supplying air such as an air pump, and the air outlet end is communicated with the heating pipeline 101.
The pipe cover b is provided with a pressure release valve 105, the pressure release valve 105 is used for being triggered when the pressure in the heating pipeline 101 reaches a preset value and performing pressure release processing on the heating pipeline 101, and the pressure release valve 105 can be realized by the conventional technical means.
The pipe wall of the heating pipe 101 is provided with a support 106, and an electric heating rod 107 is installed on the support 106 in a threaded mode.
When the temperature of the electric heating rod 107 is abnormally increased and is sensed by the external monitoring element 2, the air in the heating pipeline 101 is thermally expanded, so that the pressure is increased and exceeds the threshold value of the pressure release valve 105, the pressure release valve 105 is further opened, part of hot air in the heating pipeline 101 is discharged, and the extrusion of the hot air on the heating pipeline 101 is slowed down;
when the temperature of the induction electrothermal rod 107 abnormally rises, the external monitoring element 2 sends a signal to open the electromagnetic valve 103 and the air pump: 1. the air pump delivers air into the heating pipeline 101 to form an air flow; 2. the nitrogen tank conveys nitrogen into the heating pipeline 101 through a connecting pipe 102 and an electromagnetic valve 103, and the interior of the heating pipeline 101 is cooled; the air current in 1 drives the nitrogen gas in 2 and flows fast together for the cooling process improves the cooling effect, and simultaneously, the hot-air in the heating pipeline 101 passes through the relief valve 105 and discharges.
As shown in fig. 1, 5-6, the external monitoring element 2 includes a casing 201, the casing 201 is screwed on the outside of the heating pipeline 101, the inner wall of the casing 201, the bracket 106 and the pipe wall of the heating pipeline 101 are made of heat conducting materials, and the heat of the electric heating rod 107 is conducted to the casing 201 by using air as a medium and using the heat conducting materials as a medium, and in the preferred embodiment, the outer wall of the casing 201 is made of heat insulating materials to prevent the heat from being lost through the outer wall of the casing 201.
The end of the casing 201 is provided with a connecting hole 202, the orifice of the connecting hole 202 is provided with a cartridge case 203, one end of the cartridge case 203 is open and communicated with the connecting hole 202, and the other end is closed and provided with an air hole 208.
The bottom of the cavity of the cartridge 203 is provided with a contact a 206.
A sliding plate 204 is slidably sleeved in the cylinder shell 203, and a spring 205 positioned between the cavity bottom and the sliding plate 204 is further arranged in the cylinder shell 203.
The side of the slide plate 204 facing the cartridge case 203 is provided with a contact b 207.
The heat conduction exists between the casing 201 and the electric heating rod 107, so that when the temperature of the electric heating rod 107 rises abnormally, the casing 201 is also in a high-temperature environment, the air in the casing 201 is thermally expanded, the sliding plate 204 is driven to move by overcoming the elastic force of the spring 205, the contact piece a206 is contacted with the contact piece b207, and at the moment, the trigger switch formed by the contact piece a206 and the contact piece b207 is closed, and a signal is sent out.
The working principle of the utility model is as follows:
when the temperature of the electric heating rod 107 rises abnormally, the inside of the casing 201 is also in a high-temperature environment, so that the air in the casing 201 is thermally expanded, the elastic force of the spring 205 is overcome, the sliding plate 204 is driven to move, the contact piece a206 is contacted with the contact piece b207, at the moment, the trigger switch formed by the contact piece a206 and the contact piece b207 is closed, a signal is sent out, the circuit is broken, and the electromagnetic valve 103 and the air pump are opened: 1. the air pump delivers air into the heating pipeline 101 to form an air flow; 2. the nitrogen tank conveys nitrogen into the heating pipeline 101 through a connecting pipe 102 and an electromagnetic valve 103, and the interior of the heating pipeline 101 is cooled; the air flow in the heating pipeline 1 drives the nitrogen in the heating pipeline 2 to rapidly flow together, so that the cooling process is accelerated, the cooling effect is improved, and meanwhile, the hot air in the heating pipeline 101 is discharged through the pressure release valve 105;
and in the period that the temperature of the electric heating rod 107 is abnormally increased to the time that the trigger switch is closed to send a signal, the air in the heating pipeline 101 is thermally expanded, so that the pressure intensity is increased and exceeds the threshold value of the pressure release valve 105, the pressure release valve 105 is further opened, part of hot air in the heating pipeline 101 is discharged, and the extrusion of the hot air on the heating pipeline 101 is slowed down.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (6)
1. The utility model provides a take explosion-proof electric heater of safety arrangement nitrogen gas which characterized in that, it includes interior heating element (1) and outer monitoring element (2), and interior heating element (1) is used for carrying out heating operation, and outer monitoring element (2) are used for the heating temperature of real time monitoring interior heating element (1) to triggered when interior heating element (1) takes place unusual intensification, cool down and the processing of opening circuit internal heating element (1).
2. The nitrogen explosion-proof electric heater with the safety protection device is characterized in that the inner heating element (1) comprises a heating pipeline (101), one pipe orifice of the heating pipeline (101) is provided with a pipe cover a, the other pipe orifice is provided with a pipe cover b, the pipe cover a is provided with an air inlet, the pipe cover b is provided with an air outlet, the pipe wall of the heating pipeline (101) is provided with a support (106), and the support (106) is provided with an electric heating rod (107) in a threaded mode.
3. The nitrogen explosion-proof electric heater with the safety protection device according to claim 2, characterized in that a connecting pipe (102) and a one-way valve (104) which are communicated with the heating pipeline (101) are arranged on the pipe cover a, an electromagnetic valve (103) is arranged outside the connecting pipe (102), the tail end of the connecting pipe (102) is connected with a nitrogen tank, the one-way valve (104) is used for enabling air to flow into the heating pipeline (101) from the outside in a one-way manner, the air inlet end of the one-way valve (104) is connected with an air pump, and the air outlet end is communicated with the heating pipeline (101);
the tube cover b is provided with a pressure relief valve (105).
4. The electric heater with the safety protection device for nitrogen explosion protection as claimed in claim 3, wherein the outer monitoring element (2) comprises a casing (201), the casing (201) is screw-assembled on the outside of the heating pipeline (101), and the inner wall of the casing (201), the bracket (106) and the pipe wall of the heating pipeline (101) are all made of heat conducting materials.
5. The nitrogen explosion-proof electric heater with the safety protection device is characterized in that a connecting hole (202) is formed in the end portion of the casing (201), a cylinder shell (203) is arranged at the hole opening of the connecting hole (202), one end of the cylinder shell (203) is opened and communicated with the connecting hole (202), the other end of the cylinder shell (203) is closed and provided with an air hole (208), a sliding plate (204) is sleeved in the cylinder shell (203) in a sliding mode, and a spring (205) located between the cavity bottom and the sliding plate (204) is further arranged in the cylinder shell (203).
6. The nitrogen explosion-proof electric heater with the safety protection device as claimed in claim 5, characterized in that the cavity bottom of the cylinder shell (203) is provided with a contact piece a (206), and the side of the sliding plate (204) facing the cylinder shell (203) is provided with a contact piece b (207).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220532262.2U CN216820512U (en) | 2022-03-11 | 2022-03-11 | Nitrogen explosion-proof electric heater with safety protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220532262.2U CN216820512U (en) | 2022-03-11 | 2022-03-11 | Nitrogen explosion-proof electric heater with safety protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216820512U true CN216820512U (en) | 2022-06-24 |
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ID=82045822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220532262.2U Active CN216820512U (en) | 2022-03-11 | 2022-03-11 | Nitrogen explosion-proof electric heater with safety protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216820512U (en) |
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2022
- 2022-03-11 CN CN202220532262.2U patent/CN216820512U/en active Active
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