CN202149477U

CN202149477U - Electric automatic control device for heat transfer oil steam generator

Info

Publication number: CN202149477U
Application number: CN201120257214U
Authority: CN
Inventors: 龚锦丰
Original assignee: Changshu Xieshun Textiles & Gaments Co Ltd
Current assignee: Changshu Xieshun Textiles & Gaments Co Ltd
Priority date: 2011-07-20
Filing date: 2011-07-20
Publication date: 2012-02-22
Anticipated expiration: 2021-07-20

Abstract

An electric automatic control device for a heat transfer oil steam generator belongs to the field of electric appliance protection equipment, and comprises a water level sampling circuit, a water level control circuit, a water pump, a low water level protection circuit, a pressure sampling circuit, a pressure control circuit, a pneumatic valve, and a power supply circuit, wherein the power supply circuit supplies all the circuits; the water pump, the pneumatic valve, the water level sampling circuit, and the pressure sampling circuit are connected with the heat transfer oil steam generator; the water level sampling circuit and the pressure sampling circuit are connected with the water level control circuit and the pressure control circuit respectively; the water level control circuit is connected with the water pump and the low water level protection circuit; and the low water level protection circuit is connected with the pressure control circuit and the pneumatic valve. The utility model has the advantages that no professional personnel is needed for operation, the water level and the pressure can be automatically controlled, and the circuit is simple in structure and easy in maintenance; besides, manual cost is saved, the safety performance of the heat transfer oil steam generator is improved, and the service life of the heat transfer oil steam generator is prolonged.

Description

Conduction oil steam generator electrical automatic control equipment

Technical field

The utility model relates to a kind of electrical automatic control equipment, is specifically related to a kind of electrical automatic control equipment that is used for the conduction oil steam generator, belongs to the electric prospection apparatus field

Background technology

conduction oil is claimed heat-transfer oil again, and regular name is called heat medium oil, is also referred to as thermal conductance oil, the hot coal wet goods.Conduction oil is a kind of transmission medium of heat; Because it has homogeneous heating, temperature adjustment precise control, can under low-steam pressure, produce high temperature, heat-transfer effect is good, energy-conservation, conveying and characteristics such as easy to operate; Be widely used in various occasions in recent years, the conduction oil steam generator is exactly wherein application.

conduction oil steam generator is the high-efficiency heat exchanger equipment of new generation that uses at present, and it needs the electrical automatic control equipment of function admirable supporting with it.And traditional electrical control gear is owing to be Artificial Control; Efficient is relatively poor and security performance is low; Operating personnel need note conduction oil level in steam generator height and pressure size constantly; Overvoltage accidentally will occur and not have the situation of water level operation, particularly not have the water level operation considerable influence is arranged in safe in utilization and service life of conduction oil steam generator.

In view of above-mentioned prior art, be necessary to explore, for this reason, the applicant has done actively and good try, and the technical scheme that will introduce below produces under this background

Summary of the invention

The task of the utility model is to provide a kind of special messenger's of need not operation, can control water level, pressure automatically, and the simple conduction oil steam generator automaton for ease of maintenaince of circuit structure.It had both practiced thrift artificial expenditure, the security performance and the service life of having improved the conduction oil steam generator again simultaneously.

The task of the utility model is accomplished like this; A kind of conduction oil steam generator electrical automatic control equipment; Comprise water level sampling circuit, water-level control circuit, water pump, low water level holding circuit, pressure samples circuit, pressure control circuit, pneumatic operated valve and power circuit; Said power circuit is each circuit supply; Water pump, pneumatic operated valve, water level sampling circuit and pressure samples circuit are connected with the conduction oil steam generator; The water level sampling circuit is connected with pressure control circuit with water-level control circuit respectively again with the pressure samples circuit, and water-level control circuit is connected with the low water level holding circuit with water pump, and the low water level holding circuit is connected with pneumatic operated valve with pressure control circuit.

One end of the input of the described power circuit of the utility model and the phase line R that gets access to grid after fuse FU1 is connected, other end connecting to neutral line N, the positive terminal output DC source+24V of its output, negative pole end ground connection.

The described water level sampling circuit of the utility model is made up of water level meter W; The power interface of said water level meter W meets dc source+24V; One end of the coil of the relay J 1 in its low water level contact and the water-level control circuit is connected, and an end of the coil of the relay J 2 in its high water level contact and the water-level control circuit is connected.

described water-level control circuit of the utility model comprises relay J 1, J2, overheat protective relay FR, contactor KM1, low water level indicator lamp T1 and high water level indicator lamp T2; One end of the normally opened contact of relay J 1 is connected with an end of first normally opened contact of pressure control circuit repeat circuit J3; The other end of the normally opened contact of relay J 1 is connected with pneumatic operated valve; One end of first normally-closed contact of relay J 1 is connected with the end of low water level indicator lamp T1; One end of the normally opened contact of relay J 2 is connected with the end of high water level indicator lamp T2; After being connected, one end of one end of second normally-closed contact of relay J 1 and the normally opened contact of contactor KM1 succeeds an end of the normally-closed contact of electrical equipment J2; The other end of the normally-closed contact of relay J 2 is connected with an end of the coil of contactor KM1; The other end of the coil of contactor KM1 is connected with the end of overheat protective relay FR; The other end of overheat protective relay FR is connected with water pump; Another termination dc source+24V of the normally opened contact of relay J 2, the other end of the other end of the other end of first normally-closed contact of relay J 1, second normally-closed contact of relay J 1, the normally opened contact of contactor KM1 are connected the back and insert electrical network phase line R, the other end common ground of the other end of the coil of relay J 1, J2, high water level indicator lamp T2 and low water level indicator lamp T1 with fuse FU1.

The described low water level holding circuit of the utility model is made up of first normally-closed contact, normally opened contact and the pneumatic operated valve of the relay J in the water-level control circuit 1; The first normally-closed contact two ends of relay J 1 are connected with low water level indicator lamp T1 with power circuit respectively, the normally opened contact two ends respectively with pressure control circuit in the normally opened contact of relay J 3 be connected with pneumatic operated valve.

The described pressure samples circuit of the utility model is made up of electric contact steam pressure gauge G; Its movable contact meets dc source+24V; One end of the normally-closed contact of the relay J 4 in low-pressure contact and the pressure control circuit is connected, and an end of the coil of the relay J 4 in high-voltage contact and the pressure control circuit is connected.

The described pressure control circuit of the utility model comprises relay J 3, J4, low pressure indicator lamp T3 and HT pilot T4; One end of the 3rd normally opened contact of relay J 3 is connected with the end of low pressure indicator lamp T3; One end of second normally opened contact of relay J 3 and an end of succeeding the normally-closed contact of electrical equipment J4 after the low-pressure contact of electric contact steam pressure gauge G in the pressure samples circuit is connected; One end of the normally opened contact of relay J 4 is connected with the end of HT pilot T4; The other end of the normally-closed contact of relay J 4 is connected with an end of the coil of relay J 3; One end of first normally opened contact of relay J 3 is connected with an end of the normally opened contact of low water level holding circuit repeat circuit J1; The other end of first normally opened contact of relay J 3 is connected the back and inserts electrical network phase line R with fuse FU1; Another termination dc source+24V of the other end of the other end of the 3rd normally opened contact of relay J 3, second normally opened contact of relay J 3, the normally opened contact of relay J 4, the other end of the other end of the coil of the other end of the coil of relay J 3, relay J 4, low pressure indicator lamp T3 and the other end common ground of HT pilot T4.

The conduction oil steam generator electrical automatic control equipment of the utility model also comprises manual control circuit; Said manual control circuit comprises key switch SB1, SB2 and SB3; The other end of the normally-closed contact of contactor KM1, the end of key switch SB2, the end of key switch SB3 are connected in the other end of the end of key switch SB1 and first normally opened contact of pressure control circuit repeat circuit J3, the water-level control circuit; The other end of key switch SB1 is connected the back and inserts electrical network phase line R with fuse FU1; The other end of key switch SB2 and an end that connects pneumatic operated valve after the other end of the normally opened contact of relay J 1 is connected, the other end of key switch SB3 are connected the back and are connected with an end of the coil of contactor KM1 with an end of the normally-closed contact of relay J 2.

After the utility model adopted technique scheme, its advantage was: water-level control circuit, pressure control circuit can make water level, pressure realize control automatically, need not special messenger's operation.In addition, can when low water level, intake automatically, stop into water during high water level automatically; Can when low pressure, heat up automatically, stop automatically during high pressure heating up.The practical components and parts that use of the utility model are few, and cost is low, and circuit structure is simple.And when low water level, can not heat up, to the safety of conduction oil steam generator and good guarantee is provided service life.

Description of drawings

Fig. 1 is the theory diagram of the utility model.

Fig. 2 is the electrical schematic diagram of the electric automatic control circuit of the utility model.

The specific embodiment

Fig. 1 is asked for an interview in ; A kind of conduction oil steam generator electrical automatic control equipment comprises water level sampling circuit 1, water-level control circuit 2, water pump 3, low water level holding circuit 4, pressure samples circuit 5, pressure control circuit 6, pneumatic operated valve 7 and power circuit; Said power circuit converts dc source to after being inserted by electrical network; Be each circuit supply; The water level meter W of water pump 3, pneumatic operated valve 7, water level sampling circuit 1 and the electric contact steam pressure gauge G of pressure samples circuit 5 are connected with conduction oil steam generator 8 through pipeline; Water level sampling circuit 1 is connected with pressure control circuit 6 with water-level control circuit 2 respectively again with pressure samples circuit 5, and water-level control circuit 2 is connected with low water level holding circuit 4 with water pump 3, and low water level holding circuit 4 is connected with pneumatic operated valve 7 with pressure control circuit 6.Water level sampling circuit 1 is gathered the water level high-low signal through water level meter W, exports water-level control circuit 2 to, just controls water pump 3 runnings by water-level control circuit 2 according to the water level of reality.In addition, water-level control circuit 2 can also be controlled in certain working range level in steam generator and pressure through 7 runnings of low water level holding circuit 4 control pneumatic operated valves.Pressure samples circuit 5 is gathered the high-low pressure signal through electric contact steam pressure gauge G, exports pressure control circuit 6 to, just controls pneumatic operated valve 7 runnings by pressure control circuit 6 according to the pressure of reality.

Fig. 2 is asked for an interview in ; When in low water level, water level meter W low water level contact and high water level contact are all broken off, the coil blackout of relay J 1; First normally-closed contact of relay J 1 is closed; The low water level indicator lamp is bright reports to the police, and the normally opened contact of relay J 1 breaks off simultaneously, and pneumatic operated valve 7 breaks off and stops to heat up.At this moment, the normally-closed contact of relay J 2 is closed, and the coil of contactor KM1 is owing to the closure of second normally-closed contact of relay J 1 is switched on, the automatic adhesive of contactor KM1 normally opened contact, and water pump 3 turns round.When water level rises to high water level, the equal conducting in water level meter W low water level contact and high water level contact, the coil electricity of relay J 1, J2, the normally opened contact of relay J 2 is closed, and the high water level indicator lamp is bright.The normally-closed contact of relay J 2 breaks off, the coil blackout of contactor KM1, and its normally opened contact breaks off, and water pump shuts down, and water inlet stops.Simultaneously, the normally opened contact of relay J 1 is closed, and the pneumatic operated valve running begins to heat up.

Fig. 2 is still seen in ; When in low pressure, the electric contact steam pressure gauge G in the pressure samples circuit 5 connects low-pressure contact, the coil blackout of relay J 4; Its normally-closed contact is closed; The coil electricity of relay J 3, first normally opened contact of relay J 3 is closed, and pneumatic operated valve is connected and is begun to heat up.When pressure rose to high pressure, electric contact steam pressure gauge G connected high-voltage contact, relay J 4 coil electricities, and its normally-closed contact breaks off, relay J 3 coil blackouts, its first normally opened contact breaks off, and pneumatic operated valve breaks off, and stops to heat up.The normally opened contact of relay J 4 breaks off simultaneously, and HT pilot is bright.

in addition; The conduction oil steam generator electrical automatic control equipment of the utility model also comprises manual control circuit; When automaton breaks down or specific (special) requirements is arranged, can regulate level in steam generator and pressure through this manual control circuit.Key switch SB1 is normally closed, and when pushing button switch S B2, pneumatic operated valve is connected, and begins to heat up; When pushing button switch S B3, water pump is connected, and begins water inlet.

In sum, the technical scheme that the utility model provides has overcome the shortcoming in the prior art, has reached goal of the invention, has embodied the described technique effect of applicant

Claims

1. conduction oil steam generator electrical automatic control equipment; It is characterized in that comprising water level sampling circuit (1), water-level control circuit (2), water pump (3), low water level holding circuit (4), pressure samples circuit (5), pressure control circuit (6), pneumatic operated valve (7) and power circuit; Said power circuit is each circuit supply; Water pump (3), pneumatic operated valve (7), water level sampling circuit (1) and pressure samples circuit (5) are connected with conduction oil steam generator (8); Water level sampling circuit (1) is connected with pressure control circuit (6) with water-level control circuit (2) respectively again with pressure samples circuit (5); Water-level control circuit (2) is connected with low water level holding circuit (4) with water pump (3), and low water level holding circuit (4) is connected with pneumatic operated valve (7) with pressure control circuit (6).

2. conduction oil steam generator electrical automatic control equipment according to claim 1; The end and the phase line R that gets access to grid after fuse FU1 is connected that it is characterized in that the input of described power circuit; Other end connecting to neutral line N; The positive terminal output DC source+24V of its output, negative pole end ground connection.

3. conduction oil steam generator electrical automatic control equipment according to claim 1; It is characterized in that described water level sampling circuit (1) is made up of water level meter W; The power interface of said water level meter W meets dc source+24V; One end of the coil of the relay J 1 in its low water level contact and the water-level control circuit (2) is connected, and an end of the coil of the relay J 2 in its high water level contact and the water-level control circuit (2) is connected.

4. conduction oil steam generator electrical automatic control equipment according to claim 1; It is characterized in that described water-level control circuit (2) comprises relay J 1, J2, overheat protective relay FR, contactor KM1, low water level indicator lamp T1 and high water level indicator lamp T2; One end of the normally opened contact of relay J 1 is connected with an end of first normally opened contact of pressure control circuit (6) repeat circuit J3; The other end of the normally opened contact of relay J 1 is connected with pneumatic operated valve (7); One end of first normally-closed contact of relay J 1 is connected with the end of low water level indicator lamp T1; One end of the normally opened contact of relay J 2 is connected with the end of high water level indicator lamp T2; After being connected, one end of one end of second normally-closed contact of relay J 1 and the normally opened contact of contactor KM1 succeeds an end of the normally-closed contact of electrical equipment J2; The other end of the normally-closed contact of relay J 2 is connected with an end of the coil of contactor KM1; The other end of the coil of contactor KM1 is connected with the end of overheat protective relay FR, and the other end of overheat protective relay FR is connected with water pump (3), another termination dc source+24V of the normally opened contact of relay J 2; The other end of the other end of the other end of first normally-closed contact of relay J 1, second normally-closed contact of relay J 1, the normally opened contact of contactor KM1 is connected the back and inserts electrical network phase line R, the other end common ground of the other end of the coil of relay J 1, J2, high water level indicator lamp T2 and low water level indicator lamp T1 with fuse FU1.

5. conduction oil steam generator electrical automatic control equipment according to claim 1; It is characterized in that described low water level holding circuit (4) is made up of first normally-closed contact, normally opened contact and the pneumatic operated valve (7) of the relay J 1 in the water-level control circuit (2); The first normally-closed contact two ends of relay J 1 are connected with low water level indicator lamp T1 with power circuit respectively, the normally opened contact two ends respectively with pressure control circuit (6) in the normally opened contact of relay J 3 be connected with pneumatic operated valve (7).

6. conduction oil steam generator electrical automatic control equipment according to claim 1; It is characterized in that described pressure samples circuit (5) is made up of electric contact steam pressure gauge G; Its movable contact meets dc source+24V; One end of the normally-closed contact of the relay J 4 in low-pressure contact and the pressure control circuit (6) is connected, and an end of the coil of the relay J 4 in high-voltage contact and the pressure control circuit (6) is connected.

7. conduction oil steam generator electrical automatic control equipment according to claim 1; It is characterized in that described pressure control circuit (6) comprises relay J 3, J4, low pressure indicator lamp T3 and HT pilot T4; One end of the 3rd normally opened contact of relay J 3 is connected with the end of low pressure indicator lamp T3; Succeed an end of the normally-closed contact of electrical equipment J4 after the low-pressure contact of electric contact steam pressure gauge G is connected in one end of second normally opened contact of relay J 3 and the pressure samples circuit (5); One end of the normally opened contact of relay J 4 is connected with the end of HT pilot T4; The other end of the normally-closed contact of relay J 4 is connected with an end of the coil of relay J 3; One end of first normally opened contact of relay J 3 is connected with an end of the normally opened contact of low water level holding circuit (4) repeat circuit J1; The other end of first normally opened contact of relay J 3 is connected the back and inserts electrical network phase line R with fuse FU1; Another termination dc source+24V of the other end of the other end of the 3rd normally opened contact of relay J 3, second normally opened contact of relay J 3, the normally opened contact of relay J 4, the other end of the other end of the coil of the other end of the coil of relay J 3, relay J 4, low pressure indicator lamp T3 and the other end common ground of HT pilot T4.

8. conduction oil steam generator electrical automatic control equipment according to claim 1; It is characterized in that described conduction oil steam generator electrical automatic control equipment also comprises manual control circuit; Said manual control circuit comprises key switch SB1, SB2 and SB3; The other end of the normally-closed contact of contactor KM1, the end of key switch SB2, the end of key switch SB3 are connected in the other end of the end of key switch SB1 and first normally opened contact of pressure control circuit (6) repeat circuit J3, the water-level control circuit (2); The other end of key switch SB1 is connected the back and inserts electrical network phase line R with fuse FU1; The other end of key switch SB2 and an end that connects pneumatic operated valve (7) after the other end of the normally opened contact of relay J 1 is connected, the other end of key switch SB3 are connected the back and are connected with an end of the coil of contactor KM1 with an end of the normally-closed contact of relay J 2.