Heating or cooling medium control system of reaction kettle

Abstract

The utility model relates to the technical field of chemical engineering, and discloses a reaction kettle heating or cooling medium control system, which comprises a reaction kettle, a refrigerant water system, a heating medium water system and a switching valve, one end of the top of the valve body is provided with a first inlet and a second inlet which are respectively connected with water supply pipes of a refrigerant water system and a heating medium water system, the bottom of the valve body is provided with a first outlet connected with a water inlet of a coil pipe of a reaction kettle, and the other end of the top of the valve body is provided with a third inlet and a fourth inlet which are connected with a water outlet of the coil pipe; a second outlet connected with water return pipes of the refrigerant water system and the heating medium water system is formed in the bottom of the water tank; the valve rod is movably arranged in the valve cavity, and valve elements used for sealing the first inlet, the second inlet, the third inlet and the fourth inlet are arranged on the valve rod. And a first electric valve and a second electric valve are respectively arranged on water return pipes of the refrigerant water system and the heating medium water system. According to the utility model, the quick switching between the refrigerant water and the heating medium water is realized, and the logic control is relatively simple.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical industry technical field especially relates to a kind of reaction kettle heating or cooling medium control system. BACKGROUND

[0002] Reaction kettle can need to use refrigerant water (mainly cold water, glycerol, ethylene glycol etc.) and heat medium water (mainly hot water, heat conducting oil, steam etc.) alternately in the process of production to accurately control the temperature of reaction, ensure the smooth progress of reaction, so reaction system is usually equipped with refrigerant water system and heat medium water system, respectively using the water pump in refrigerant water to pump into the coil or jacket of reaction kettle to cool reaction kettle, refrigerant water backflow to refrigerant water system after coil or jacket, and heat medium water is the same.

[0003] At present, the switching of refrigerant water and heat medium water mainly relies on setting valve on pipeline, and the switching of refrigerant water and heat medium water is realized by opening or closing multiple valves. If the switching is manual, there are problems of troublesome operation and high labor intensity, and there can be the problem of misoperation. If it is controlled by control system, it needs to set relatively complicated logic control, has high technical requirement, and needs more electric valves, with high cost.

[0004] Based on this, the utility model provides a kind of reaction kettle heating or cooling medium control system, which is simple to switch, uses less electric valve, and has relatively simple logic control. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the technical problems existing in prior art. To this end, the utility model provides a kind of.

[0006] The technical scheme adopted by the utility model to solve its technical problems is:

[0007] A kind of reaction kettle heating or cooling medium control system is provided, comprising reaction kettle, refrigerant water system for cooling reaction kettle, heat medium water system for heating reaction kettle and switching valve for switching between refrigerant water and heat medium water of reaction kettle;The switching valve includes valve body and valve stem, the valve body is provided with valve cavity, the top of the valve body is provided with first inlet and second inlet respectively connected with water supply pipe of refrigerant water system and heat medium water system, the bottom of the valve body is provided with first outlet connected with water inlet of coil of reaction kettle between first inlet and second inlet, the other end of the top of the valve body is provided with third inlet and fourth inlet connected with water outlet of coil, and the bottom of the valve body is provided with second outlet connected with return water pipe of refrigerant water system and heat medium water system between third inlet and fourth inlet;The valve stem is movably arranged in the valve cavity, and the valve stem is provided with valve core for closing each inlet at first inlet, second inlet, third inlet and fourth inlet;First electric valve and second electric valve are respectively arranged on return water pipe of refrigerant water system and heat medium water system.

[0008] In some alternative embodiments, a linear actuator is fixedly installed on the switching valve, a top rod of the linear actuator is detachably connected with the valve rod, and the valve rod is controlled to move left and right in the valve cavity by the linear actuator.

[0009] In some alternative embodiments, the linear actuator is an electric cylinder.

[0010] In some alternative embodiments, the first electric valve and the second electric valve are interlocked.

[0011] In some alternative embodiments, a fifth inlet is further arranged at the top of the valve body between the first inlet and the second inlet, the fifth inlet is connected with an air compression pipe, a third electric valve is arranged on the air compression pipe, and the air compression pipe is connected with an air compressor unit.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] 1. The utility model realizes the quick switching of the coolant water and the heat medium water in the disc sleeve of the reaction kettle through the switching valve, only two electric valves need to be arranged on the return water pipes of the coolant water system and the heat medium water system, so that the number of required electric valves is small, compared with the traditional mode of using a large number of electric valves, the cost can be obviously reduced, the logic control of the control system can be simplified, and the technical difficulty is reduced.

[0014] 2. The design of the air compression pipe can discharge the excess coolant or heat medium in the disc pipe by using high-pressure air, and prevent the problem of mixing of the coolant and the heat medium after switching. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor, wherein:

[0016] Figure 1 It is the structural schematic diagram of the reaction kettle heating or cooling medium control system provided by the utility model;

[0017] Figure 2 It is the structural schematic diagram of the reaction kettle using heat medium to heat provided by the utility model;

[0018] Figure 3 It is the structural schematic diagram of the reaction kettle using coolant to cool provided by the utility model.

[0019] In the drawings, the components represented by each number are listed as follows:

[0020] 1 - reactor, 1.1 - coil, 2 - coolant water system, 3 - heating medium water system, 4 - switching valve, 4.1 - valve body, 4.1a - first inlet, 4.1b - second inlet, 4.1c - first outlet, 4.1d - third inlet, 4.1e - fourth inlet, 4.1f - second outlet, 4.1g - fifth inlet, 4.2 - valve stem, 4.2.1 - valve core, 5 - first electric valve, 6 - second electric valve, 7 - linear actuator, 8 - air compression pipe, 9 - third electric valve, 10 - air compressor unit. DETAILED DESCRIPTION

[0021] It should be understood that the specific embodiments described herein are merely exemplary and do not limit the present application.

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application; the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person skilled in the art can realize it, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0025] Embodiment one

[0026] As shown in the accompanying drawings Figure 1As shown, the present embodiment provides a reaction kettle heating or cooling medium control system, comprising a reaction kettle 1, a coolant water system 2, a heat medium water system 3 and a switching valve 4, wherein:

[0027] The reaction kettle 1 is provided with a coil 1.1 for connecting with the coolant water system 2 or the heat medium water system 3 to realize cooling of the reaction kettle by the coolant water or heating of the reaction kettle by the heat medium water.

[0028] The switching valve 4 is used for switching between the coolant water and the heat medium water of the reaction kettle 1. Preferably, the switching valve 4 comprises a valve body 4.1 and a valve rod 4.2, the valve body 4.1 is provided with a valve cavity, a first inlet 4.1a and a second inlet 4.1b are arranged at one end of the top of the valve body 4.1 and connected with the water supply pipes of the coolant water system 2 and the heat medium water system 3 respectively, a first outlet 4.1c is arranged at the bottom of the valve body 4.1 between the first inlet 4.1a and the second inlet 4.1b and connected with the water inlet of the coil 1.1, a third inlet 4.1d and a fourth inlet 4.1e are arranged at the other end of the top of the valve body 4.1 and connected with the water outlets of the coil 1.1, a second outlet 4.1f is arranged at the bottom of the valve body 4.1 between the third inlet 4.1d and the fourth inlet 4.1e and connected with the water return pipes of the coolant water system 2 and the heat medium water system 3; the valve rod 4.2 is movably arranged in the valve cavity, a valve core 4.2.1 is arranged at the first inlet 4.1a, the second inlet 4.1b, the third inlet 4.1d and the fourth inlet 4.1e of the valve rod 4.2 for closing the inlets; the water return pipes of the coolant water system 2 and the heat medium water system 3 are respectively provided with a first electric valve 5 and a second electric valve 6.

[0029] Working principle: when the reaction kettle 1 is heated by the heat medium water, the first electric valve 5 is closed, the second electric valve 6 is opened, the valve rod 4.2 is moved to the right, as shown in the attached Figure 2 figure, at this time the heat medium water system 3 is started, the water supply pipe of the heat medium water system 3 enters the valve cavity from the second inlet 4.1b, enters the water inlet of the coil 1.1 through the first outlet 4.1c, then enters the fourth inlet 4.1e of the switching valve 4 from the water outlet of the coil 1.1, enters the valve cavity and returns to the heat medium water system 3 through the second outlet 4.1f.

[0030] When the reaction kettle 1 needs to be cooled by the coolant water, the second electric valve 6 is closed, the first electric valve 5 is opened, the valve rod 4.2 is moved to the left, as shown in the attached Figure 3 figure, at this time the coolant water system 2 is started, the water supply pipe of the coolant water system 2 enters the valve cavity from the first inlet 4.1a, enters the water inlet of the coil 1.1 through the first outlet 4.1c, then enters the third inlet 4.1d of the switching valve 4 from the water outlet of the coil 1.1, enters the valve cavity and returns to the coolant water system 2 through the second outlet 4.1f.

[0031] Preferably, the first electric valve 5 and the second electric valve 6 of the embodiment are interlocked, that is, when the first electric valve is opened, the second electric valve is closed; and when the second electric valve is opened, the first electric valve is closed.

[0032] It is worth mentioning that the embodiment can be provided with a drain pipe (not shown in the figure) at the lowest position of the coil, and a valve is arranged on the drain pipe to discharge the excess refrigerant or heat medium in the coil by opening the valve. When steam is used as the heat medium, the condensed water can also be discharged through the drain pipe.

[0033] Embodiment two

[0034] On the basis of the embodiment one, the embodiment further has a linear actuator 7 fixedly installed on the switch valve 4, and a top rod of the linear actuator 7 is detachably connected with a valve rod, so that the valve rod is controlled by the linear actuator to move left and right in a valve cavity. Preferably, the linear actuator 7 of the embodiment uses an electric cylinder.

[0035] Embodiment three

[0036] On the basis of the embodiment one or the embodiment two, the embodiment further has a fifth inlet 4.1g arranged on the top of the valve body 4.1 between the first inlet 4.1a and the second inlet 4.1b, and the fifth inlet 4.1g is connected with an air compression pipe 8, the air compression pipe 8 is provided with a third electric valve 9, and the air compression pipe 8 is connected with an air compressor set 10.

[0037] The embodiment can use the high-pressure air generated by the air compressor set to discharge the excess refrigerant or heat medium in the coil. In specific implementation, when the refrigerant in the coil 1.1 is switched to the heat medium or the heat medium is switched to the refrigerant, before switching, the third electric valve 9 is opened, the high-pressure air enters the valve cavity through the fifth inlet 4.1g, and the refrigerant or heat medium in the coil 1.1 is pressed back to the refrigerant water system 3 or the heat medium water system 2 through the coil 1.1, so as to prevent the heat medium from mixing with the refrigerant or the refrigerant from mixing with the heat medium. After the refrigerant or heat medium in the coil is discharged, the third electric valve 9 is closed.

[0038] The above only describes the embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion according to the content of the utility model specification, or direct or indirect application in other related technical fields, are also included in the patent protection range of the utility model.

Claims

1. A control system for heating or cooling media in a reaction vessel, comprising a reaction vessel, a chilled water system, and a heated water system; characterized in that: It also includes a switching valve for switching between cold water and hot water in the reactor; The switching valve includes a valve body and a valve stem. The valve body has a valve cavity, and its top end has a first inlet and a second inlet connected to the water supply pipes of the chilled water system and the hot water system, respectively. The bottom of the valve body, between the first inlet and the second inlet, has a first outlet connected to the water inlet of the reactor coil. The other top end of the valve body has a third inlet and a fourth inlet connected to the water outlet of the coil. The bottom of the valve body, between the third inlet and the fourth inlet, has a second outlet connected to the return water pipes of the chilled water system and the hot water system. The valve stem is movably disposed within the valve cavity, and it has valve cores at the first inlet, second inlet, third inlet, and fourth inlet for closing each inlet. The return pipes of the chilled water system and the hot water system are respectively equipped with a first electric valve and a second electric valve.

2. The reactor heating or cooling medium control system according to claim 1, characterized in that: A linear actuator is fixedly installed on the switching valve. The push rod of the linear actuator is detachably connected to the valve stem, and the linear actuator controls the valve stem to move left and right in the valve cavity.

3. The reactor heating or cooling medium control system according to claim 2, characterized in that: The linear actuator is an electric cylinder.

4. The reactor heating or cooling medium control system according to claim 1, characterized in that: The first electric valve and the second electric valve are interlocked.

5. The reactor heating or cooling medium control system according to any one of claims 1 to 4, characterized in that: The valve body is provided with a fifth inlet at the top, between the first and second inlets. The fifth inlet is connected to an air compressor pipe, which is equipped with a third electric valve and is connected to an air compressor unit.

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