Pressure controller for steam pressure reducing valve

Abstract

The utility model discloses a pressure controller for a steam pressure reducing valve, which comprises a steam pressure reducing valve main body and a pressure controller main body, one end of the steam pressure reducing valve main body is provided with a flange plate, one end of the flange plate is fixedly provided with a fixing block, and one end of the fixing block is provided with a limiting groove; and fixing assemblies are arranged on the two sides of the fixing frame, the fixing assemblies are fixed to one end of the flange plate, and a positioning assembly is arranged on the fixing frame. The pressure controller is installed on the flange plate of the steam pressure reducing valve through the pressure controller body and used for controlling pressure fluctuation at the front end or unstable pressure caused by insufficient adjusting precision of the pressure reducing valve, meanwhile, the high-precision steam adjusting angle seat valve is matched, steam flow is controlled through feedback of the temperature sensor of the foaming device, and the foaming effect is improved. And through loosening of the positioning assembly, the positioning assembly fixes the fixing strip, and therefore the advantage that the pressure controller body can be conveniently installed on the flange plate of the steam pressure reducing valve body is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of steam pressure reducing valves, in particular to a pressure controller for a steam pressure reducing valve. Background Art

[0002] At present, the foaming process of volatile polystyrene (EPS) mainly uses saturated steam as the heating source. The quality of EPS foaming requires high precision in steam flow and temperature control. If the control is not in place, it is easy to cause an increase in product defective rate and steam waste. The steam regulation of EPS foaming equipment usually adopts the form of a pressure reducing valve plus a diaphragm regulating valve.

[0003] However, there are some problems with the prior art: At present, the steam regulation of the existing EPS foaming equipment usually adopts the form of a pressure reducing valve plus a film regulating valve. The pressure and flow are adjusted by the feedback value of the temperature sensor configured in the foaming device. However, there is a large deviation between the actual foaming temperature and the set temperature, and it is unstable, resulting in an increase in the product defective rate, a high water content of the foam particles, and steam waste. Therefore, we propose a pressure controller for a steam pressure reducing valve. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a pressure controller for a steam pressure reducing valve, which is installed on the flange of the steam pressure reducing valve through the pressure controller body to control the pressure fluctuation at the front end or the pressure instability caused by insufficient adjustment accuracy of the pressure reducing valve. At the same time, in conjunction with a high-precision steam regulating angle seat valve, the steam flow is controlled through feedback from the temperature sensor of the foaming device to achieve the purpose and advantage of precise temperature control.

[0005] The utility model is implemented as follows: a pressure controller for a steam pressure reducing valve comprises:

[0006] A steam pressure reducing valve body and a pressure controller body, wherein a flange is provided at one end of the steam pressure reducing valve body, a fixing strip is fixedly installed on the lower surface of the pressure controller body, a fixing block is fixedly installed at one end of the flange, a limiting groove is provided at one end of the fixing block, and the lower end of the fixing strip is inserted into the limiting groove;

[0007] A fixing frame, both sides of which are provided with fixing components, the fixing components are fixed to one end of the flange, and a positioning component is provided on the fixing frame, and the positioning component is used to fix the position of the fixing strip.

[0008] Optionally, two groups of threaded grooves are formed at one end of the flange, and two groups of first mounting holes are formed at one end of the fixing frame.

[0009] Optionally, the fixing assembly includes a fixing plate, a second mounting hole is opened at one end of the fixing plate, a threaded sleeve is fixedly installed in the second mounting hole, and one side of the fixing plate is fixedly installed on one side of the fixing frame.

[0010] Optionally, a threaded rod is threadedly connected to the threaded sleeve, a rotating rod is fixedly mounted on one end of the threaded rod, and the other end of the threaded rod is threadedly connected to a thread groove.

[0011] Optionally, the positioning assembly includes two groups of movable sleeves, the two groups of movable sleeves are fixedly installed in two groups of first mounting holes respectively, and positioning rods are slidably installed in the two groups of movable sleeves.

[0012] Optionally, a pull plate is fixedly mounted on one end of the positioning rod, and two groups of positioning grooves are opened on one side of the fixing strip.

[0013] Optionally, a mounting plate is fixedly mounted on the surface of the positioning rod, one end of the mounting plate is elastically connected to a return spring, one end of the return spring is fixedly mounted on one end of the movable sleeve, and the other end of the positioning rod is inserted into the positioning groove.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The pressure controller body is installed on the flange of the steam pressure reducing valve to control the front-end pressure fluctuation or the pressure instability caused by the insufficient adjustment accuracy of the pressure reducing valve. At the same time, in conjunction with the high-precision steam regulating angle seat valve, the steam flow is controlled through the feedback of the temperature sensor of the foaming device to achieve the purpose of precise temperature control. The staff operates the fixing assembly to fix the fixing assembly on the flange, thereby achieving the effect of installing the fixing frame on the flange of the steam pressure reducing valve body. When the pressure controller body needs to be installed on the flange of the steam pressure reducing valve body, the staff pulls the positioning assembly, and then inserts the lower end of the fixing strip of the flange into the limiting groove of the fixing block to prevent the displacement of the pressure controller body. When the insertion is completed, the positioning assembly is finally loosened so that the positioning assembly fixes the fixing strip, thereby achieving the effect of facilitating the installation of the pressure controller body on the flange of the steam pressure reducing valve body.

[0016] 2. The staff pulls the pull plate to drive the positioning rod to slide in the movable sleeve and the other end moves out of the limit groove. The sliding of the positioning rod drives the installation plate to move, and the movement of the installation plate drives the reset spring to compress. Then, the lower end of the fixing strip of the flange is inserted into the limit groove of the fixing block to prevent the main body of the pressure controller from moving. After the insertion is completed, the pull plate is finally released. Due to the action of the reset spring, the other end of the positioning rod is inserted into the positioning groove to fix the fixing strip.

[0017] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram provided by the utility model;

[0019] Figure 2 It is a schematic diagram of a fixing frame provided by the utility model;

[0020] Figure 3 It is a schematic diagram of the threaded rod provided by the utility model;

[0021] Figure 4 It is a schematic diagram of the positioning rod provided by the utility model;

[0022] Figure 5 It is a schematic diagram of the installation disk provided by the utility model.

[0023] In the figure: 1. flange; 2. pressure controller body; 3. fixing bar; 4. fixing block; 5. fixing frame; 6. fixing assembly; 7. positioning assembly; 601. fixing plate; 602. threaded sleeve; 603. threaded rod; 604. rotating rod; 701. movable sleeve; 702. positioning rod; 703. pull plate; 704. mounting plate; 705. reset spring; 8. steam pressure reducing valve body. DETAILED DESCRIPTION

[0024] In order to further understand the content, features and effects of the utility model, the following embodiments are given as examples and described in detail with reference to the accompanying drawings.

[0025] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0026] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present invention, its application, or uses.

[0027] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0028] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0029] The structure of the utility model is described in detail below in conjunction with the accompanying drawings.

[0030] like Figures 1 to 5 As shown, a pressure controller for a steam pressure reducing valve provided by an embodiment of the utility model comprises:

[0031] A steam pressure reducing valve body 8 and a pressure controller body 2, wherein a flange 1 is provided at one end of the steam pressure reducing valve body 8, a fixing strip 3 is fixedly installed on the lower surface of the pressure controller body 2, a fixing block 4 is fixedly installed at one end of the flange 1, a limiting groove is provided at one end of the fixing block 4, and the lower end of the fixing strip 3 is inserted into the limiting groove;

[0032] The pressure controller body 2 is installed on the flange 1 of the steam pressure reducing valve to control the pressure fluctuation at the front end or the pressure instability caused by the insufficient adjustment accuracy of the pressure reducing valve. At the same time, in conjunction with the high-precision steam adjustment angle seat valve, the steam flow is controlled through the feedback of the temperature sensor of the foaming device to achieve the purpose of precise temperature control. The existing pressure controller body 2 is connected to the flange 1 of the steam pressure reducing valve body 8 by threads. Since the threaded connection method requires the pressure controller body 2 to be continuously rotated, the process is relatively cumbersome. The staff operates the fixing component 6 to fix the fixing component 6 on the flange 1, thereby achieving the effect of installing the fixing frame 5 on the flange 1 of the steam pressure reducing valve body 8. When the pressure controller When the controller body 2 needs to be installed on the flange 1 of the steam pressure reducing valve body 8, the staff pulls the positioning assembly 7, and then inserts the lower end of the fixing strip 3 of the flange 1 into the limit groove of the fixing block 4, thereby preventing the displacement of the pressure controller body 2. After the insertion is completed, the positioning assembly 7 is finally loosened, so that the positioning assembly 7 fixes the fixing strip 3, thereby achieving the effect of facilitating the installation of the pressure controller body 2 on the flange 1 of the steam pressure reducing valve body 8. In the existing steam supply control, the pressure controller body 2 is installed at the rear end of the pressure reducing valve, and the control accuracy can reach ±0.05% FS; the high-precision steam regulating angle seat valve of ±0.1% FS is adopted, which can stably and accurately control the steam flow and pressure. It has been proved in practice that the above improvement can control the foaming temperature at SV: 104℃±0.5℃, and at this temperature, high-quality foaming particles with a gram weight error of 3% and a water content of less than 5% can be obtained. Due to the stable control of pressure and flow, the steam consumption is saved by about 15% compared with the conventional method.

[0033] The fixing frame 5 has fixing components 6 disposed on both sides thereof. The fixing component 6 is fixed to one end of the flange 1 . The fixing frame 5 has a positioning component 7 disposed thereon. The positioning component 7 is used to fix the position of the fixing strip 3 .

[0034] One end of the flange 1 is provided with two groups of threaded grooves, and one end of the fixing frame 5 is provided with two groups of first mounting holes.

[0035] Specifically, the fixing assembly 6 includes a fixing plate 601, a second mounting hole is opened at one end of the fixing plate 601, a threaded sleeve 602 is fixedly installed in the second mounting hole, and one side of the fixing plate 601 is fixedly installed on one side of the fixing frame 5; a threaded rod 603 is threadedly connected to the threaded sleeve 602, a rotating rod 604 is fixedly installed at one end of the threaded rod 603, and the other end of the threaded rod 603 is threadedly connected in the thread groove.

[0036] The staff rotates the rotating rod 604 to drive the threaded rod 603 to rotate in the threaded sleeve 602, and the other end of the threaded rod 603 is threadedly connected to the thread groove, so that the fixing frame 5 is installed on the flange 1.

[0037] Specifically, the positioning assembly 7 includes two groups of movable sleeves 701, and the two groups of movable sleeves 701 are respectively fixedly installed in the two groups of first mounting holes, and positioning rods 702 are slidably installed in the two groups of movable sleeves 701; a pull plate 703 is fixedly installed at one end of the positioning rod 702, and two groups of positioning grooves are opened on one side of the fixed bar 3; a mounting plate 704 is fixedly installed on the surface of the positioning rod 702, and a reset spring 705 is elastically connected to one end of the mounting plate 704, and one end of the reset spring 705 is fixedly installed at one end of the movable sleeve 701, and the other end of the positioning rod 702 is inserted into the positioning groove.

[0038] The staff pulls the pull plate 703 to drive the positioning rod 702 to slide in the movable sleeve 701 and the other end moves out of the limiting groove. The positioning rod 702 slides to drive the mounting plate 704 to move. The movement of the mounting plate 704 compresses the reset spring 705, and then the lower end of the fixing strip 3 of the flange 1 is inserted into the limiting groove of the fixing block 4 to prevent the pressure controller body 2 from moving. After the insertion is completed, the pull plate 703 is finally released. Due to the action of the reset spring 705, the other end of the positioning rod 702 is inserted into the positioning groove to fix the fixing strip 3.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure controller for a steam pressure reducing valve, characterized in that: include: A steam pressure reducing valve body (8) and a pressure controller body (2), wherein a flange (1) is provided at one end of the steam pressure reducing valve body (8), a fixing strip (3) is fixedly mounted on the lower surface of the pressure controller body (2), a fixing block (4) is fixedly mounted at one end of the flange (1), a limiting groove is provided at one end of the fixing block (4), and the lower end of the fixing strip (3) is inserted into the limiting groove; A fixing frame (5), wherein fixing components (6) are arranged on both sides of the fixing frame (5), wherein the fixing components (6) are fixed to one end of the flange (1), and a positioning component (7) is arranged on the fixing frame (5), wherein the positioning component (7) is used to fix the position of the fixing strip (3).

2. A pressure controller for a steam pressure reducing valve according to claim 1, characterized in that: Two groups of threaded grooves are formed at one end of the flange (1), and two groups of first mounting holes are formed at one end of the fixing frame (5).

3. A pressure controller for a steam pressure reducing valve according to claim 1, characterized in that: The fixing assembly (6) comprises a fixing plate (601), one end of the fixing plate (601) is provided with a second mounting hole, a threaded sleeve (602) is fixedly mounted in the second mounting hole, and one side of the fixing plate (601) is fixedly mounted on one side of the fixing frame (5).

4. A pressure controller for a steam pressure reducing valve according to claim 3, characterized in that: The threaded sleeve (602) is internally threadedly connected to a threaded rod (603), one end of the threaded rod (603) is fixedly mounted with a rotating rod (604), and the other end of the threaded rod (603) is threadedly connected to a thread groove.

5. A pressure controller for a steam pressure reducing valve according to claim 1, characterized in that: The positioning assembly (7) comprises two groups of movable sleeves (701), the two groups of movable sleeves (701) are fixedly installed in two groups of first installation holes respectively, and positioning rods (702) are slidably installed in the two groups of movable sleeves (701).

6. A pressure controller for a steam pressure reducing valve according to claim 5, characterized in that: A pull plate (703) is fixedly mounted on one end of the positioning rod (702), and two groups of positioning grooves are opened on one side of the fixing strip (3).

7. A pressure controller for a steam pressure reducing valve according to claim 5, characterized in that: The surface of the positioning rod (702) is fixedly sleeved with a mounting plate (704), one end of the mounting plate (704) is elastically connected to a return spring (705), one end of the return spring (705) is fixedly mounted on one end of the movable sleeve (701), and the other end of the positioning rod (702) is inserted into the positioning groove.

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