Water-cooling jacket type high-temperature plunger valve

Abstract

The utility model relates to a water-cooling jacket type high-temperature plunger valve which comprises a valve body, a valve seat and a packing gland are installed at the two ends of the valve body respectively, a plunger is arranged in the valve body, the valve seat and the packing gland in a sliding mode, a gas sealing structure is arranged between the packing gland and the plunger, a valve body centrally-arranged guide is arranged in one end of the valve body, and the plunger moves along the valve body centrally-arranged guide. The valve seat is close to the valve body middle guide; a stuffing box is arranged in the other end of the valve body, a guide sleeve and a stuffing set are arranged in the stuffing box, a gland hole and a vent hole which are communicated with each other are formed in the stuffing gland, a first sealing ring, a gas sealing cavity and a second sealing ring are sequentially arranged in the gland hole, the gas sealing cavity is communicated with the vent hole, and the vent hole and the gas sealing cavity form a gas sealing structure. The valve seat and the equipment flange are of a welded integrated flush joint structure, the plunger is designed to be short in stroke, and the requirement for installation in a compact space is met.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve technical field relates to water cooling jacket type high temperature plunger valve. BACKGROUND

[0002] Photovoltaic as a kind of renewable energy, is the main force of future energy. China is the world's most important photovoltaic production country. Polysilicon is the main raw material for manufacturing photovoltaic cells. At present, polysilicon production process mainly has two kinds: modified siemens method and silane fluidized bed method, wherein modified siemens method is the market mainstream route. The main medium of polysilicon blanking condition is silicon powder, and nitrogen is used to assist blanking, and the main components of medium are silicon carbide powder, activated carbon powder, nitrogen, hydrogen and other flammable gases. When the reaction kettle reacts, the temperature in the kettle reaches 600 DEG C, the valve switching frequency is large in the whole process, and the motion stability of valve is higher, so a discharge valve is needed to solve the on-site problem. SUMMARY

[0003] The utility model discloses a kind of water cooling jacket type high temperature plunger valves, can solve above-mentioned problem, and ensure the safety and reliability of valve operation.

[0004] According to the technical scheme provided by the utility model: a kind of water cooling jacket type high temperature plunger valve, including valve body, valve body two ends are installed valve seat and packing gland respectively, slidingly arranged plunger in valve body, valve seat, packing gland, gas sealing structure is arranged between packing gland and plunger, the valve body one end is equipped with valve body middle guide, plunger moves along valve body middle guide;Valve seat is close to valve body middle guide;The other end of valve body is equipped with packing gland, and packing gland is equipped with guide sleeve and packing group, packing gland is equipped with the vent hole and the gland hole that are connected, first sealing ring, gas sealing cavity, second sealing ring are sequentially arranged in the gland hole, gas sealing cavity and vent hole are connected, and vent hole and gas sealing cavity form gas sealing structure.

[0005] As a further improvement of the utility model, the packing gland is fastened on the valve body by studs and nuts.

[0006] As a further improvement of the utility model, the gas sealing cavity is filled with 6bar nitrogen.

[0007] As a further improvement of the utility model, a water cooling jacket is provided outside the valve body.

[0008] As a further improvement of the utility model, the water cooling jacket is located outside the packing group.

[0009] As a further improvement of the utility model, a gasket seal is provided between the valve body and the valve seat.

[0010] As a further improvement of the utility model, the valve body and the valve seat are connected and fastened by studs and nuts.

[0011] As a further improvement of the utility model, a lock washer is arranged between the nut and the valve body.

[0012] The positive progress effect of the application is that:

[0013] 1. The valve seat and the equipment flange are a welded integrated flat joint structure, the plunger has a short stroke design, and the compact space installation requirement is met.

[0014] 2. The valve body is designed with a centrally arranged guide, the plunger repeated motion accuracy is improved, and it is ensured that the valve meets the V-class sealing requirement for a long time.

[0015] 3. The valve body is locally provided with a water cooling jacket, the packing chamber area temperature is effectively reduced, the packing friction is reduced, the highest 600 DEG C high temperature and high frequency switching action (20 times / day) requirement is met, and the adverse effect of heat radiation on the actuator and control accessories is reduced.

[0016] 4. The valve body and the valve seat adopt a split type design, are connected and fastened by using studs and nuts, and are provided with lock washers to prevent loosening, the alternating working condition temperature application requirement of 300 DEG C to 600 DEG C is met, and the connection thread loosening is prevented.

[0017] 5. The integrated packing gland is designed, a nitrogen sealing protection structure is arranged, high-temperature active carbon powder leakage and ignition are prevented, and the safety and reliability of the valve operation are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a front view of the utility model.

[0019] Figure 2 It is a valve body sectional view of the utility model.

[0020] Figure 3 It is a packing gland sectional view of the utility model. DETAILED DESCRIPTION

[0021] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0022] In order for those skilled in the art to better understand the utility model scheme, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the utility model.

[0023] It should be noted that the terms "first", "second" and the like in the description and in the claims of the utility model and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein. In addition, "including" and "having" and similar terms mean that in addition to those listed in "including" and "having", "including" and "having" other not yet listed can also be included; For example, a process, method, system, product or device that can include a series of steps or units does not have to be limited to those steps or units that have been clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] Due to the angle of the drawing, some parts may not be drawn, but their positions and connection relationships can be understood according to the textual expression part.

[0025] As shown in Figure 1 The utility model discloses a water cooling jacket type high temperature plunger valve, including valve body 1, the both ends of valve body 1 are installed valve seat 2 and packing gland 10 respectively, plunger 7 is slidably arranged in valve body 1, valve seat 2, packing gland 10, gas sealing structure is arranged between packing gland 10 and plunger 7.

[0026] Valve body 1 one end portion is equipped with valve body middle guide 1.1, and plunger 7 moves along valve body middle guide 1.1. Valve seat 2 is close to valve body middle guide 1.1. Valve body 1 another end portion is equipped with packing gland 1.2, and packing gland 1.2 is equipped with guide sleeve 8 and packing group 9, and valve body middle guide 1.1 and guide sleeve 8 form double guide structure, which effectively improves the stability of valve action.

[0027] Packing gland 10 fixes guide sleeve 8 and packing group 9 in packing gland 1.2, and packing gland 10 is fastened on valve body 1 through stud 11 and nut 12. Packing gland 10 is equipped with gland hole and air hole 10.1 in communication, first sealing ring, gas sealing cavity 10.2 and second sealing ring are sequentially arranged in the gland hole, the gas sealing cavity 10.2 is in communication with the air hole 10.1, the protective gas enters the gas sealing cavity 10.2 through the air hole 10.1, the combustible and explosive gas and high-temperature activated carbon powder are prevented from leaking and igniting, and the safety and reliability of valve operation are ensured. The first sealing ring and the second sealing ring seal the gas sealing cavity 10.2. The gas sealing cavity 10.2 and the air hole 10.1 constitute the gas sealing structure.

[0028] In the embodiment, the protective gas is nitrogen, and the gas sealing cavity 10.2 is filled with 6bar nitrogen.

[0029] The valve body 1 is externally provided with a water cooling jacket 1.3 located at the outer periphery of the packing group 9, which can effectively reduce the temperature of the packing chamber area, reduce the friction of the packing, meet the requirements of high temperature of 600 DEG C and high frequency switching action (20 times / day), and reduce the adverse effects of heat radiation on the actuator and control accessories.

[0030] The valve body 1 and the valve seat 2 are sealed by the gasket 3. The valve body 1 and the valve seat 2 are connected and fastened by the stud 4 and the nut 5, and the nut 5 and the valve body 1 are provided with the lock washer 6 to prevent loosening. The valve body 1 and the valve seat 2 are designed in a split type, connected and fastened by the stud and the nut, and provided with the lock washer and the lock gasket to prevent loosening, which meets the application requirements of alternating temperature conditions of 300 DEG C to 600 DEG C, and prevents loosening of the connecting thread.

[0031] The valve seat 2 and the equipment flange are a welded integrated flat joint structure, and the valve is a short stroke plunger structure, which meets the requirements of compact space installation.

[0032] It can be understood that the above embodiments are only exemplary embodiments for illustrating the principles of the utility model, and the utility model is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the utility model, and these modifications and improvements are also regarded as the protection scope of the utility model.

Claims

1. A water-cooled jacketed high temperature plug valve comprising a valve body (1), characterized in that, Valve body (1) both ends are installed valve seat (2) and packing gland (10), valve body (1), valve seat (2), packing gland (10) in sliding is equipped with plunger (7), packing gland (10) and plunger (7) between gas seal structure is equipped, valve body (1) one end is equipped with valve body in the guide (1.1), plunger (7) along valve body in the guide (1.1) moves;Valve seat (2) is close to valve body in the guide (1.1);Valve body (1) other end is equipped with packing gland (10) in packing gland (10) and vent hole (10.1) that the hole is connected, packing gland hole is equipped with first sealing ring, gas seal cavity (10.2), second sealing ring in sequence, gas seal cavity (10.2) and vent hole (10.1) are connected, and vent hole (10.1) and gas seal cavity (10.2) form gas seal structure.

2. The water-cooled jacketed high temperature plug valve as set forth in claim 1, wherein, Packing gland (10) is fastened on valve body (1) through stud (11), nut (12).

3. The water-cooled jacketed high temperature plug valve as set forth in claim 1, wherein, Gas seal cavity (10.2) is filled with 6bar nitrogen.

4. The water-cooled jacketed high temperature plug valve as recited in claim 1, wherein, Valve body (1) is equipped with water cooling jacket (1.3) outside.

5. The water-cooled jacketed high temperature plug valve as set forth in claim 4, wherein, Water cooling jacket (1.3) is located in the outer periphery of packing group (9).

6. The water-cooled jacketed high temperature plug valve as set forth in claim 1, wherein, Valve body (1) and valve seat (2) are sealed between gasket (3).

7. The water-cooled jacketed high temperature plug valve as set forth in claim 1, wherein, Valve body (1) and valve seat (2) are connected and fastened through stud (4), nut (5).

8. The water-cooled jacketed high temperature plug valve as set forth in claim 7, wherein, Lock washer (6) is arranged between nut (5) and valve body (1).

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