Online adjustable dead steam recovery equipment

Abstract

The utility model discloses an on-line adjustable dead steam recovery device which comprises an injection pump, an auxiliary mechanism is arranged on the surface of the injection pump, a filtering mechanism is arranged at the connecting end of the injection pump, through the auxiliary mechanism arranged on the injection pump, rapid installation and accurate positioning are achieved, heat loss is effectively reduced, and the service life of the injection pump is prolonged. The sealing performance and the integrity of the heat preservation cover are enhanced, it is ensured that heat is effectively isolated in the heat preservation cover, the heat loss of a working medium in the transmission process is reduced, the dead steam recovery efficiency is remarkably improved, and it is ensured that equipment can stably and efficiently operate under various working conditions; the jet pump has the advantages that dead steam entering the jet pump can be filtered in a multi-stage manner and is prevented from entering the pump body to cause blockage, the dead steam entering the pump body is pure and free of impurities, and components in the jet pump are effectively protected, so that the reliability of equipment is improved, the service life of the equipment is prolonged, the equipment failure maintenance frequency caused by the impurities is reduced, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of waste steam recovery technology, specifically to an online adjustable waste steam recovery device. Background Technology

[0002] Online adjustable waste steam recovery equipment is a device used to improve energy utilization efficiency. It is mainly used to recover low-pressure steam (i.e., waste steam) generated during industrial production for reuse. This equipment is particularly suitable for industries that generate a large amount of waste heat and steam emissions, such as chemical, papermaking, and food processing.

[0003] However, the online adjustable waste steam recovery equipment has poor heat preservation during operation, which easily leads to a large heat loss of the working medium during transmission, making it difficult to maintain the optimal operating conditions and affecting the efficiency and effect of waste steam recovery. At the same time, the online adjustable waste steam recovery equipment lacks effective filtration measures in actual use, and impurities are easily mixed in, which can easily clog the online adjustable waste steam recovery equipment or damage internal components, reducing the reliability and service life of the equipment.

[0004] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0005] In view of the problems in the related technologies, this utility model proposes an online adjustable waste steam recovery device to overcome the above-mentioned technical problems existing in the existing related technologies.

[0006] Therefore, the specific technical solution adopted by this utility model is as follows:

[0007] An online adjustable exhaust steam recovery device includes a jet pump. An auxiliary mechanism is provided on the surface of the jet pump. The auxiliary mechanism includes a heat insulation cover one and a heat insulation cover two respectively provided on the surface of the jet pump. The joint of the heat insulation cover one is provided with equidistantly distributed snap-fit ​​grooves. The inner wall of the snap-fit ​​groove is snapped with a snap-fit ​​block. One end of the snap-fit ​​block is connected to the joint of the heat insulation cover two.

[0008] Furthermore, in order to better filter the exhaust steam entering the jet pump, a filter mechanism is provided at the connection end of the jet pump. The filter mechanism includes a filter cover at the connection end of the jet pump. The inner wall of the filter cover is provided with a filter bag and a filter plate. Multiple connecting screws are threaded on the filter cover, and one end of the connecting screw is threaded to the connection end of the jet pump.

[0009] Furthermore, to better improve the sealing performance of the filter cover, multiple sealing rings are provided at one end of the filter cover, and the surfaces of the multiple sealing rings are in contact with the inside of the connection end of the jet pump.

[0010] Furthermore, in order to better ensure the tightness between the first and second insulation covers, the first insulation cover has equidistantly distributed connecting holes on one side, and the inner wall of the connecting holes is threaded with connecting screws, one end of which is threaded to the second insulation cover.

[0011] Furthermore, in order to better regulate the flow rate of the exhaust steam, the inner wall of the injection pump is provided with an installation hole, the inner wall of the installation hole is provided with a spring, one end of the spring is provided with a sealing ring, the sealing ring is located inside the installation hole, and the inner wall of the sealing ring is provided with a spray needle.

[0012] Furthermore, to better assist the movement of the spray needle, a nozzle is provided at one end of the inner wall of the jet pump, and one end of the spray needle is located inside the nozzle.

[0013] Furthermore, in order to better guide the spray needle, a guide tube is in contact with the surface of the spray needle, and one end of the guide tube is connected to the inner wall of the jet pump.

[0014] Furthermore, in order to better control the desuperheating water, a desuperheating water valve is installed on the jet pump, and the surface of the desuperheating water valve is in contact with insulation cover one and insulation cover two.

[0015] The beneficial effects of this utility model are as follows: By setting an auxiliary mechanism on the jet pump, rapid installation and precise positioning are achieved, effectively reducing heat loss, enhancing the sealing and integrity of the insulation cover, ensuring that heat is effectively isolated inside, reducing heat loss of the working medium during transmission, maintaining its optimal operating conditions, significantly improving the waste steam recovery efficiency, and ensuring that the equipment can operate stably and efficiently under various working conditions. At the same time, the filtration mechanism set on the jet pump can perform multi-stage filtration on the waste steam entering the jet pump, preventing it from entering the pump body and causing blockage, ensuring that the waste steam entering the pump body is pure and free of impurities, effectively protecting the internal components of the jet pump, thereby improving the reliability and service life of the equipment, reducing the number of equipment failures and repairs caused by impurities, and lowering maintenance costs. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of an online adjustable waste steam recovery device according to an embodiment of the present utility model;

[0018] Figure 2This is a schematic diagram of the auxiliary mechanism structure of an online adjustable waste steam recovery device according to an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the filter mechanism structure of an online adjustable waste steam recovery device according to an embodiment of the present utility model;

[0020] Figure 4 yes Figure 1 An enlarged structural diagram of point a in the middle.

[0021] In the picture:

[0022] 1. Jet pump; 2. Auxiliary mechanism; 201. Insulation cover one; 202. Insulation cover two; 203. Snap-fit ​​groove; 204. Snap-fit ​​block; 3. Filtration mechanism; 301. Filter cover; 302. Filter bag; 303. Filter plate; 304. Connecting screw one; 4. Sealing ring; 5. Connecting screw two; 6. Spring; 7. Sealing ring; 8. Spray needle; 9. Nozzle; 10. Guide tube; 11. Desuperheating water valve. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example 1:

[0025] like Figures 1-4 As shown, an online adjustable waste steam recovery device according to an embodiment of the present utility model includes a jet pump 1. The jet pump 1 is composed of a pneumatic actuator, a steam chamber, and a mixing chamber from left to right. The pneumatic actuator, steam chamber, and mixing chamber are connected by bolts for online adjustment of waste steam. An auxiliary mechanism 2 is provided on the surface of the jet pump 1. The auxiliary mechanism 2 includes a heat insulation cover 201 and a heat insulation cover 202 respectively provided on the surface of the jet pump 1. It is used to reduce the heat loss of the working medium (such as driving steam and the drawn waste steam) during the transmission process and maintain its optimal operating conditions. The joint of the heat insulation cover 201 is provided with equidistantly distributed snap-fit ​​grooves 203 for snap-fitting snap-fit ​​blocks 204. The inner wall of the snap-fit ​​groove 203 is snapped with snap-fit ​​blocks 204 for snap-fitting and fixing the heat insulation cover 202. One end of the snap-fit ​​block 204 is connected to the joint of the heat insulation cover 202.

[0026] One side of the heat insulation cover 201 has equally spaced connection holes for installing the second connection screw 5. The inner wall of the connection hole is threaded with the second connection screw 5. One end of the second connection screw 5 is threaded to the heat insulation cover 202. The jet pump 1 is equipped with a desuperheating water valve 11. The surface of the desuperheating water valve 11 is in contact with the heat insulation cover 201 and the second heat insulation cover 202.

[0027] Example 2:

[0028] like Figures 1-3 , Figure 4 As shown, according to an embodiment of the present invention, an online adjustable exhaust steam recovery device is provided with a filter mechanism 3 at the connection end of the jet pump 1. The filter mechanism 3 includes a filter cover 301 at the connection end of the jet pump 1 for filtering impurities entering the jet pump 1. The inner wall of the filter cover 301 is provided with a filter bag 302 and a filter plate 303 for collecting the filtered impurities. Four connecting screws 304 are threaded on the filter cover 301 to improve the tightness of the connection end between the filter cover 301 and the jet pump 1. One end of the connecting screws 304 is threadedly connected to the connection end of the jet pump 1. Two sealing rings 4 are provided at one end of the filter cover 301 to improve the sealing performance of the filter cover 301. The surfaces of the two sealing rings 4 are in contact with the inside of the connection end of the jet pump 1.

[0029] The inner wall of the jet pump 1 has an installation hole, and a spring 6 is installed on the inner wall of the installation hole. A sealing ring 7 is installed at one end of the spring 6. Expanded graphite (existing technology, so it will not be described in detail) is installed at the junction of the sealing ring 7 and the pneumatic actuator and the steam chamber in actual use to improve the sealing performance. The sealing ring 7 is located inside the installation hole. A spray needle 8 is installed on the inner wall of the sealing ring 7. A nozzle 9 is installed at one end of the inner wall of the jet pump 1. One end of the spray needle 8 is located inside the nozzle 9. The surface of the spray needle 8 contacts a guide cylinder 10. One end of the guide cylinder 10 is connected to the inner wall of the jet pump 1.

[0030] Example 3:

[0031] like Figures 1-4 As shown, in a certain thermal power plant, the steam pressure fluctuates between 0.8 and 1.3 MPa, and the exhaust steam flow rate is between 8 and 12 m³ / s. 3 Within a certain timeframe, after the equipment is in operation, when the steam pressure increases by 1.2 MPa, the spring 6 stretches, the nozzle 8 moves forward, the exhaust steam velocity increases from the original 10 m / s to 15 m / s, and the exhaust steam recovery efficiency increases from the original 75% to 90%. At the same time, after testing, the leakage rate is controlled within 0.5%, which is far lower than the 5% leakage rate of traditional equipment.

[0032] In chemical plants, the pressure range of exhaust steam is 0.6-1.0 MPa, and the flow rate ranges from 6-10 m³ / h. 3 / h. During a change in operating conditions, the exhaust steam pressure suddenly dropped to 0.7MPa, the nozzle 8 moved backward, and the exhaust steam velocity decreased from 12m / s to 8m / s. The equipment stably recovered the exhaust steam. According to statistics, the exhaust steam leakage rate of the chemical plant decreased from 7% to 1%, reducing resource waste and environmental pollution. The overall operational stability of the equipment improved, and the number of production interruptions caused by equipment failures decreased from 3 times per month to less than 1 time per month.

[0033] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0034] In summary, with the help of the above-mentioned technical solution of this utility model, before the exhaust steam enters the jet pump 1, it first passes through the filter cover 301, and then passes through the filter bag 302 (coarse filter) and the filter plate 303 (fine filter) set inside the filter cover 301 in sequence to intercept particulate matter and impurities. The filter cover 301 is fixed to the connection end of the jet pump 1 by the connecting screw 304, and the sealing ring 4 enhances the sealing of the interface to prevent unfiltered gas leakage. The filtered exhaust steam is mixed with the driving steam in the heat preservation environment, and is sprayed at high speed through the nozzle 9 to form a negative pressure, continuously drawing in external exhaust steam to achieve efficient recovery.

[0035] When the system pressure increases, the spring 6 stretches, pushing the sealing ring 7 to move the nozzle 8 within the guide cylinder 10, which can reduce the cross-sectional area of ​​the nozzle 9 channel and increase the flow rate. When the pressure decreases, the spring 6 resets, causing the nozzle 8 to move and increase the channel area. The top of the jet pump 1 is equipped with a desuperheating water valve 11, which directly contacts the surfaces of the insulation cover 201 and the insulation cover 202. When the internal temperature is too high, the desuperheating water valve 11 adjusts the desuperheating water flow to cool down the components and prevent thermal deformation or damage. The pneumatic actuator drives the nozzle 8 by changing the internal air pressure, responding to changes in system pressure in real time to ensure stable flow under different working conditions.

[0036] Meanwhile, the surface of the jet pump 1 is provided with heat insulation cover 1 201 and heat insulation cover 202. The two are quickly snapped together and fixed by snap-fit ​​groove 203 and snap-fit ​​block 204, and locked by connecting screw 25 to form a closed cavity, reducing the heat loss of the working medium (exhaust steam and driving steam) and maintaining the optimal internal operating temperature.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An online adjustable waste steam recovery device, characterized in that, The device includes a jet pump (1), and an auxiliary mechanism (2) is provided on the surface of the jet pump (1). The auxiliary mechanism (2) includes a heat insulation cover one (201) and a heat insulation cover two (202) respectively provided on the surface of the jet pump (1). The joint of the heat insulation cover one (201) is provided with equally spaced snap-fit ​​grooves (203). The inner wall of the snap-fit ​​groove (203) is snapped with a snap-fit ​​block (204). One end of the snap-fit ​​block (204) is connected to the joint of the heat insulation cover two (202).

2. An online adjustable exhaust gas heat recovery device according to claim 1, characterized in that, The connection end of the jet pump (1) is provided with a filter mechanism (3). The filter mechanism (3) includes a filter cover (301) provided at the connection end of the jet pump (1). The inner wall of the filter cover (301) is provided with a filter bag (302) and a filter plate (303). Multiple connecting screws (304) are threadedly connected to the filter cover (301). One end of the connecting screw (304) is threadedly connected to the connection end of the jet pump (1).

3. An online adjustable exhaust gas heat recovery device according to claim 2, characterized in that, A plurality of sealing rings (4) are provided at one end of the filter cover (301), and the surface of the plurality of sealing rings (4) is in contact with the inside of the connection end of the jet pump (1).

4. An online adjustable exhaust gas heat recovery device according to claim 3, characterized in that, One side of the heat insulation cover (201) has equally spaced connecting holes, and the inner wall of the connecting holes is threaded with connecting screws (5). One end of the connecting screws (5) is threaded to the heat insulation cover (202).

5. An online adjustable exhaust gas heat recovery device according to claim 4, characterized in that, The inner wall of the jet pump (1) is provided with an installation hole, and a spring (6) is provided on the inner wall of the installation hole. A sealing ring (7) is provided on one end of the spring (6). The sealing ring (7) is located in the installation hole, and a spray needle (8) is provided on the inner wall of the sealing ring (7).

6. An online adjustable exhaust gas heat recovery device according to claim 5, characterized in that, A nozzle (9) is provided on one end of the inner wall of the jet pump (1), and one end of the spray needle (8) is located inside the nozzle (9).

7. An online adjustable exhaust gas heat recovery device according to claim 6, characterized in that, The surface of the nozzle (8) is in contact with the guide tube (10), and one end of the guide tube (10) is connected to the inner wall of the jet pump (1).

8. The online adjustable waste steam recovery device according to claim 7, characterized in that, The jet pump (1) is equipped with a desuperheating water valve (11), and the surface of the desuperheating water valve (11) is in contact with the first insulation cover (201) and the second insulation cover (202).

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